Change hard-coded references from blockstream.info to mempool.space

.gitattributes

@@ -1,3 +0,0 @@
-# ignore all differences in line endings
-package.json eol=crlf -crlf
-*/package.json eol=crlf -crlf

.github/CODEOWNERS

@@ -1 +0,0 @@
-backend/src/api/database-migration.ts	@wiz @softsimon

.github/ISSUE_TEMPLATE/00-bug-issue.md

@@ -1,43 +0,0 @@
----
-name: 🐛 Bug Report
-about: Report bugs (no support requests, please)
----
-
-<!--
-   SUPPORT REQUESTS:
-   This is for reporting bugs in Mempool, not for support requests. 
-   If you have a support request, please reach out on Matrix:
-   https://matrix.to/#/#mempool.support:bitcoin.kyoto
--->
-
-### Description
-
-<!-- brief description of the bug -->
-
-#### Version
-
-<!-- commit id or version number -->
-
-### Steps to reproduce
-
-<!-- if you can reliably reproduce the bug, list the steps here -->
-
-### Expected behaviour
-
-<!-- description of the expected behavior -->
-
-### Actual behaviour
-
-<!-- explain what happened instead of the expected behaviour -->
-
-### Screenshots
-
-<!-- Screenshots if gui related, drag and drop to add to the issue -->
-
-#### Device or machine
-
-<!-- device/machine used, operating system -->
-
-#### Additional info
-
-<!-- Additional information useful for debugging (e.g. logs) -->

.github/ISSUE_TEMPLATE/30-feature-request.md

@@ -1,27 +0,0 @@
----
-name: ✨ Feature Request
-about: Request a feature or suggest other enhancements
----
-
-<!--
-   SUPPORT REQUESTS:
-   This is for requesting features in Mempool, not for support requests. 
-   If you have a support request, please reach out on Matrix:
-   https://matrix.to/#/#mempool.support:bitcoin.kyoto
--->
-
-### Description
-
-<!-- brief description of the feature request -->
-
-### Problem to be solved
-
-<!-- description of the the problem you're having -->
-
-### Proposed solution
-
-<!-- explain how you think we should solve the problem -->
-
-#### Additional info
-
-<!-- Additional information useful for implementing (e.g. docs, links, etc.) -->

.github/ISSUE_TEMPLATE/config.yml

@@ -1,8 +0,0 @@
-blank_issues_enabled: false
-contact_links:
-  - name: 🙋 Need help? Chat with us on Matrix
-    url: https://matrix.to/#/#mempool.support:bitcoin.kyoto
-    about: For support requests or general questions
-  - name: 🌐 Want to help with translations? Use Transifex
-    url: https://www.transifex.com/mempool/mempool
-    about: All translations work is done on Transifex

.github/dependabot.yml

@@ -1,47 +0,0 @@
-version: 2
-updates:
-  - package-ecosystem: npm
-    directory: "/backend"
-    schedule:
-      interval: daily
-    open-pull-requests-limit: 10
-    ignore:
-      - dependency-name: "*"
-        update-types: ["version-update:semver-major"]
-    allow:
-      - dependency-type: "production"
-
-  - package-ecosystem: npm
-    directory: "/frontend"
-    schedule:
-      interval: daily
-    open-pull-requests-limit: 10
-    ignore:
-      - dependency-name: "*"
-        update-types: ["version-update:semver-major"]
-    allow:
-      - dependency-type: "production"
-
-  - package-ecosystem: docker
-    directory: "/docker/backend"
-    schedule:
-      interval: weekly
-    ignore:
-      - dependency-name: "*"
-        update-types: ["version-update:semver-major"]
-
-  - package-ecosystem: docker
-    directory: "/docker/frontend"
-    schedule:
-      interval: weekly
-    ignore:
-      - dependency-name: "*"
-        update-types: ["version-update:semver-major"]
-
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: weekly
-    ignore:
-      - dependency-name: "*"
-        update-types: ["version-update:semver-major"]

.github/pull_request_template.md

@@ -1,6 +0,0 @@
-<!--
-Please do not open pull requests for translations.
-
-All translations work is done on Transifex:
-https://www.transifex.com/mempool/mempool
--->

.github/workflows/ci.yml

@@ -1,96 +0,0 @@
-name: CI Pipeline for the Backend and Frontend
-
-on:
-  pull_request:
-    types: [opened, review_requested, synchronize]
-
-jobs:
-  backend:
-    if: "!contains(github.event.pull_request.labels.*.name, 'ops') && !contains(github.head_ref, 'ops/')"
-    strategy:
-      matrix:
-        node: ["16.16.0", "18.14.1"]
-        flavor: ["dev", "prod"]
-      fail-fast: false
-    runs-on: "ubuntu-latest"
-
-    name: Backend (${{ matrix.flavor }}) - node ${{ matrix.node }}
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-        with:
-          path: ${{ matrix.node }}/${{ matrix.flavor }}
-
-      - name: Setup Node
-        uses: actions/setup-node@v3
-        with:
-          node-version: ${{ matrix.node }}
-          registry-url: "https://registry.npmjs.org"
-
-      - name: Install
-        if: ${{ matrix.flavor == 'dev'}}
-        run: npm ci
-        working-directory: ${{ matrix.node }}/${{ matrix.flavor }}/backend
-
-      - name: Install (Prod dependencies only)
-        if: ${{ matrix.flavor == 'prod'}}
-        run: npm ci --omit=dev --omit=optional
-        working-directory: ${{ matrix.node }}/${{ matrix.flavor }}/backend
-
-      - name: Lint
-        if: ${{ matrix.flavor == 'dev'}}
-        run: npm run lint
-        working-directory: ${{ matrix.node }}/${{ matrix.flavor }}/backend
-
-      - name: Unit Tests
-        if: ${{ matrix.flavor == 'dev'}}
-        run: npm run test
-        working-directory: ${{ matrix.node }}/${{ matrix.flavor }}/backend
-
-      - name: Build
-        run: npm run build
-        working-directory: ${{ matrix.node }}/${{ matrix.flavor }}/backend
-
-  frontend:
-    if: "!contains(github.event.pull_request.labels.*.name, 'ops') && !contains(github.head_ref, 'ops/')"
-    strategy:
-      matrix:
-        node: ["16.16.0", "18.14.1"]
-        flavor: ["dev", "prod"]
-      fail-fast: false
-    runs-on: "ubuntu-latest"
-
-    name: Frontend (${{ matrix.flavor }}) - node ${{ matrix.node }}
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-        with:
-          path: ${{ matrix.node }}/${{ matrix.flavor }}
-
-      - name: Setup Node
-        uses: actions/setup-node@v3
-        with:
-          node-version: ${{ matrix.node }}
-          registry-url: "https://registry.npmjs.org"
-
-      - name: Install (Prod dependencies only)
-        run: npm ci --omit=dev --omit=optional
-        if: ${{ matrix.flavor == 'prod'}}
-        working-directory: ${{ matrix.node }}/${{ matrix.flavor }}/frontend
-
-      - name: Install
-        if: ${{ matrix.flavor == 'dev'}}
-        run: npm ci
-        working-directory: ${{ matrix.node }}/${{ matrix.flavor }}/frontend
-
-      - name: Lint
-        if: ${{ matrix.flavor == 'dev'}}
-        run: npm run lint
-        working-directory: ${{ matrix.node }}/${{ matrix.flavor }}/frontend
-
-      # - name: Test
-      #   run: npm run test
-
-      - name: Build
-        run: npm run build
-        working-directory: ${{ matrix.node }}/${{ matrix.flavor }}/frontend

.github/workflows/cypress.yml

@@ -1,64 +0,0 @@
-name: Cypress Tests
-
-on:
-  push:
-    branches: [master]
-  pull_request:
-    types: [opened, synchronize]
-
-jobs:
-  cypress:
-    if: "!contains(github.event.pull_request.labels.*.name, 'ops') && !contains(github.head_ref, 'ops/')"
-    runs-on: "ubuntu-latest"
-    strategy:
-      fail-fast: false
-      matrix:
-        module: ["mempool", "liquid", "bisq"]
-        include:
-          - module: "mempool"
-            spec: |
-              cypress/e2e/mainnet/*.spec.ts
-              cypress/e2e/signet/*.spec.ts
-              cypress/e2e/testnet/*.spec.ts
-          - module: "liquid"
-            spec: |
-              cypress/e2e/liquid/liquid.spec.ts
-              cypress/e2e/liquidtestnet/liquidtestnet.spec.ts
-          - module: "bisq"
-            spec: |
-              cypress/e2e/bisq/bisq.spec.ts
-
-    name: E2E tests for ${{ matrix.module }}
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-        with:
-          path: ${{ matrix.module }}
-
-      - name: Setup node
-        uses: actions/setup-node@v3
-        with:
-          node-version: 16.15.0
-          cache: "npm"
-          cache-dependency-path: ${{ matrix.module }}/frontend/package-lock.json
-
-      - name: Chrome browser tests (${{ matrix.module }})
-        uses: cypress-io/github-action@v5
-        with:
-          tag: ${{ github.event_name }}
-          working-directory: ${{ matrix.module }}/frontend
-          build: npm run config:defaults:${{ matrix.module }}
-          start: npm run start:local-staging
-          wait-on: "http://localhost:4200"
-          wait-on-timeout: 120
-          record: true
-          parallel: true
-          spec: ${{ matrix.spec }}
-          group: Tests on Chrome (${{ matrix.module }})
-          browser: "chrome"
-          ci-build-id: "${{ github.sha }}-${{ github.workflow }}-${{ github.event_name }}"
-        env:
-          COMMIT_INFO_MESSAGE: ${{ github.event.pull_request.title }}
-          CYPRESS_RECORD_KEY: ${{ secrets.CYPRESS_RECORD_KEY }}
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          CYPRESS_PROJECT_ID: ${{ secrets.CYPRESS_PROJECT_ID }}

.github/workflows/get_image_digest.yml

@@ -1,26 +0,0 @@
-name: 'Print images digest'
-
-on:
-  workflow_dispatch:
-    inputs:
-      version:
-        description: 'Image Version'
-        required: false
-        default: 'latest'
-        type: string 
-jobs:
-  print-images-sha:
-    runs-on: 'ubuntu-latest'
-    name: Print digest for images
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-        with:
-          path: digest
-
-      - name: Run script
-        working-directory: digest
-        run: |
-          sh ./docker/scripts/get_image_digest.sh $VERSION
-        env: 
-          VERSION: ${{ github.event.inputs.version }}

.github/workflows/on-tag.yml

@@ -1,105 +0,0 @@
-name: Docker build on tag
-env:
-  DOCKER_CLI_EXPERIMENTAL: enabled
-  TAG_FMT: "^refs/tags/(((.?[0-9]+){3,4}))$"
-  DOCKER_BUILDKIT: 0
-  COMPOSE_DOCKER_CLI_BUILD: 0
-
-on:
-  push:
-    tags:
-      - v[0-9]+.[0-9]+.[0-9]+
-      - v[0-9]+.[0-9]+.[0-9]+-*
-
-permissions:
-  contents: read
-
-jobs:
-  build:
-    strategy:
-      matrix:
-        service:
-          - frontend
-          - backend
-    runs-on: ubuntu-latest
-    timeout-minutes: 120
-    name: Build and push to DockerHub
-    steps:
-      # Workaround based on JonasAlfredsson/docker-on-tmpfs@v1.0.1
-      - name: Replace the current swap file
-        shell: bash
-        run: |
-          sudo swapoff /mnt/swapfile
-          sudo rm -v /mnt/swapfile
-          sudo fallocate -l 13G /mnt/swapfile
-          sudo chmod 600 /mnt/swapfile
-          sudo mkswap /mnt/swapfile
-          sudo swapon /mnt/swapfile
-
-      - name: Show current memory and swap status
-        shell: bash
-        run: |
-          sudo free -h
-          echo
-          sudo swapon --show
-
-      - name: Mount a tmpfs over /var/lib/docker
-        shell: bash
-        run: |
-          if [ ! -d "/var/lib/docker" ]; then
-            echo "Directory '/var/lib/docker' not found"
-            exit 1
-          fi
-          sudo mount -t tmpfs -o size=10G tmpfs /var/lib/docker
-          sudo systemctl restart docker
-          sudo df -h | grep docker
-
-      - name: Set env variables
-        run: echo "TAG=${GITHUB_REF/refs\/tags\//}" >> $GITHUB_ENV
-
-      - name: Show set environment variables
-        run: |
-          printf "      TAG: %s\n"  "$TAG"
-
-      - name: Add SHORT_SHA env property with commit short sha
-        run: echo "SHORT_SHA=`echo ${GITHUB_SHA} | cut -c1-8`" >> $GITHUB_ENV
-
-      - name: Login to Docker for building
-        run: echo "${{ secrets.DOCKER_PASSWORD }}" | docker login -u "${{ secrets.DOCKER_USERNAME }}" --password-stdin
-
-      - name: Checkout project
-        uses: actions/checkout@v3
-
-      - name: Init repo for Dockerization
-        run: docker/init.sh "$TAG"
-
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
-        id: qemu
-
-      - name: Setup Docker buildx action
-        uses: docker/setup-buildx-action@v2
-        id: buildx
-
-      - name: Available platforms
-        run: echo ${{ steps.buildx.outputs.platforms }}
-
-      - name: Cache Docker layers
-        uses: actions/cache@v3
-        id: cache
-        with:
-          path: /tmp/.buildx-cache
-          key: ${{ runner.os }}-buildx-${{ github.sha }}
-          restore-keys: |
-            ${{ runner.os }}-buildx-
-
-      - name: Run Docker buildx for ${{ matrix.service }} against tag
-        run: |
-          docker buildx build \
-          --cache-from "type=local,src=/tmp/.buildx-cache" \
-          --cache-to "type=local,dest=/tmp/.buildx-cache" \
-          --platform linux/amd64,linux/arm64,linux/arm/v7 \
-          --tag ${{ secrets.DOCKER_HUB_USER }}/${{ matrix.service }}:$TAG \
-          --tag ${{ secrets.DOCKER_HUB_USER }}/${{ matrix.service }}:latest \
-          --output "type=registry" ./${{ matrix.service }}/ \
-          --build-arg commitHash=$SHORT_SHA

.gitignore

@@ -1,7 +0,0 @@
-sitemap
-data
-docker-compose.yml
-backend/mempool-config.json
-*.swp
-frontend/src/resources/config.template.js
-frontend/src/resources/config.js

.nvmrc

@@ -1 +0,0 @@
-v16.16.0

.vscode/settings.json

@@ -1,5 +0,0 @@
-{
-  "editor.tabSize": 2,
-  "typescript.preferences.importModuleSpecifier": "relative",
-  "typescript.tsdk": "./backend/node_modules/typescript/lib"
-}

CONTRIBUTING.md

@@ -1,51 +0,0 @@
-# Contributing to The Mempool Open Source Project
-
-Thank you for contributing to The Mempool Open Source Project managed by Mempool Space K.K. (“Mempool”).
-
-In order to clarify the intellectual property license granted with Contributions from any person or entity, Mempool must have a statement on file from each Contributor indicating their agreement to the Contributor License Agreement (“Agreement”). This license is for your protection as a Contributor as well as the protection of Mempool and its other contributors and users; it does not change your rights to use your own Contributions for any other purpose.
-
-When submitting a pull request for the first time, please create a file with a name like `/contributors/{github_username}.txt`, and in the content of that file indicate your agreement to the Contributor License Agreement terms below. An example of what that file should contain can be seen in wiz's agreement file. (This method of CLA "signing" is borrowed from Medium's open source project.)
-
-Also, please GPG-sign all your commits (`git config commit.gpgsign true`).
-
-# Contributor License Agreement
-
-Last Updated: January 25, 2022
-
-By accepting this Agreement, You agree to the following terms and conditions for Your present and future Contributions submitted to Mempool. Except for the license granted herein to Mempool and recipients of software distributed by Mempool, You reserve all right, title, and interest in and to Your Contributions.
-
-### 1. Definitions
-
-“You” (or “Your”) shall mean the copyright owner or legal entity authorized by the copyright owner that is making this Agreement with Mempool. For legal entities, the entity making a Contribution and all other entities that control, are controlled by, or are under common control with that entity are considered to be a single Contributor. For the purposes of this definition, “control” means (i) the power, direct or indirect, to cause the direction or management of such entity, whether by contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the outstanding shares, or (iii) beneficial ownership of such entity.
-
-“Contribution” shall mean any original work of authorship, including any modifications or additions to an existing work, that is intentionally submitted by You to Mempool for inclusion in, or documentation of, any of the products owned or managed by Mempool (“Work”). For the purposes of this definition, “submitted” means any form of electronic, verbal, or written communication sent to Mempool or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, Mempool for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by You as “Not a Contribution.”
-
-### 2. Grant of Copyright License
-
-Subject to the terms and conditions of this Agreement, You hereby grant to Mempool and to recipients of software distributed by Mempool a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Your Contributions and such derivative works.
-
-### 3. Grant of Patent License
-
-Subject to the terms and conditions of this Agreement, You hereby grant to Mempool and to recipients of software distributed by Mempool a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims licensable by You that are necessarily infringed by Your Contribution(s) alone or by combination of Your Contribution(s) with the Work to which such Contribution(s) was submitted. If any entity institutes patent litigation against You or any other entity (including a cross-claim or counterclaim in a lawsuit) alleging that your Contribution, or the Work to which you have contributed, constitutes direct or contributory patent infringement, then any patent licenses granted to that entity under this Agreement for that Contribution or Work shall terminate as of the date such litigation is filed.
-
-### 4. Authority
-
-You represent that you are legally entitled to grant the above license. If your employer(s) has rights to intellectual property that you create that includes your Contributions, you represent that you have received permission to make Contributions on behalf of that employer, that your employer has waived such rights for your Contributions to Mempool, or that your employer has executed a separate Corporate Contributor License Agreement with Mempool.
-
-### 5. Originality
-
-You represent that each of Your Contributions is Your original creation (see section 7 for submissions on behalf of others). You represent that Your Contribution submissions include complete details of any third-party license or other restriction (including, but not limited to, related patents and trademarks) of which you are personally aware, and which are associated with any part of Your Contributions.
-
-### 6. Support
-
-You are not expected to provide support for Your Contributions, except to the extent You desire to provide support. You may provide support for free, for a fee, or not at all. Unless required by applicable law or agreed to in writing, You provide Your Contributions on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON- INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE.
-
-### 7. Third Party Contributions
-
-Should You wish to submit work that is not Your original creation, You may submit it to Mempool separately from any Contribution, identifying the complete details of its source and of any license or other restriction (including, but not limited to, related patents, trademarks, and license agreements) of which you are personally aware, and conspicuously marking the work as “Submitted on behalf of a third-party: [named here]”.
-
-### 8. Notifications
-
-You agree to notify Mempool of any facts or circumstances of which you become aware that would make these representations inaccurate in any respect.
-
-EOF

Dockerfile

@@ -0,0 +1,57 @@
+FROM alpine:latest
+
+RUN mkdir /mempool.space/
+COPY ./backend /mempool.space/backend/
+COPY ./frontend /mempool.space/frontend/
+COPY ./mariadb-structure.sql /mempool.space/mariadb-structure.sql
+
+RUN apk add mariadb mariadb-client git nginx npm rsync bash
+
+RUN mysql_install_db --user=mysql --datadir=/var/lib/mysql/
+RUN /usr/bin/mysqld_safe --datadir='/var/lib/mysql/'& \
+    sleep 60 && \
+    mysql -e "create database mempool" && \
+    mysql -e "grant all privileges on mempool.* to 'mempool'@'localhost' identified by 'mempool'" && \
+    mysql mempool < /mempool.space/mariadb-structure.sql
+RUN sed -i "/^skip-networking/ c#skip-networking" /etc/my.cnf.d/mariadb-server.cnf
+
+RUN export NG_CLI_ANALYTICS=ci && \
+    npm install -g typescript && \
+    cd /mempool.space/frontend && \
+    npm install && \
+    cd /mempool.space/backend && \
+    npm install && \
+    tsc
+
+COPY ./nginx-nossl-docker.conf /etc/nginx/nginx.conf
+    
+ENV ENV dev
+ENV DB_HOST localhost
+ENV DB_PORT 3306
+ENV DB_USER mempool
+ENV DB_PASSWORD mempool
+ENV DB_DATABASE mempool
+ENV API_ENDPOINT /api/v1/
+ENV CHAT_SSL_ENABLED false
+ENV MEMPOOL_REFRESH_RATE_MS 500
+ENV INITIAL_BLOCK_AMOUNT 8
+ENV DEFAULT_PROJECTED_BLOCKS_AMOUNT 3
+ENV KEEP_BLOCK_AMOUNT 24
+ENV BITCOIN_NODE_HOST bitcoinhost
+ENV BITCOIN_NODE_PORT 8332
+ENV BITCOIN_NODE_USER bitcoinuser
+ENV BITCOIN_NODE_PASS bitcoinpass
+ENV TX_PER_SECOND_SPAN_SECONDS 150
+ENV BACKEND_API bitcoind
+ENV ELECTRS_API_URL https://mempool.space/api
+
+RUN cd /mempool.space/frontend/ && \
+    npm run build && \
+    rsync -av --delete dist/mempool/ /var/www/html/
+
+EXPOSE 80
+
+COPY ./entrypoint.sh /mempool.space/entrypoint.sh
+RUN chmod +x /mempool.space/entrypoint.sh
+WORKDIR /mempool.space
+CMD ["/mempool.space/entrypoint.sh"]

GNUmakefile

@@ -1,47 +0,0 @@
-# If you see pwd_unknown showing up check permissions
-PWD ?= pwd_unknown
-
-# DATABASE DEPLOY FOLDER CONFIG - default ./data
-ifeq ($(data),)
-DATA := data
-export DATA
-else
-DATA := $(data)
-export DATA
-endif
-
-.PHONY: help
-help:
-	@echo ''
-	@echo ''
-	@echo '	Usage: make [COMMAND]'
-	@echo ''
-	@echo '		make all		# build init mempool and electrs'
-	@echo '		make init		# setup some useful configs'
-	@echo '		make mempool		# build q dockerized mempool.space'
-	@echo '		make electrs		# build a docker electrs image'
-	@echo ''
-
-.PHONY: init
-init:
-	@echo ''
-	mkdir -p   $(DATA) $(DATA)/mysql $(DATA)/mysql/data 
-	#REF: https://github.com/mempool/mempool/blob/master/docker/README.md
-	cat docker/docker-compose.yml > docker-compose.yml
-	cat backend/mempool-config.sample.json > backend/mempool-config.json
-.PHONY: mempool
-mempool: init
-	@echo ''
-	docker-compose up --force-recreate --always-recreate-deps
-	@echo ''
-.PHONY: electrs
-electrum:
-	#REF: https://hub.docker.com/r/beli/electrum
-	@echo ''
-	docker build -f docker/electrum/Dockerfile .
-	@echo ''
-.PHONY: all
-all: init
-	make mempool
-#######################
--include Makefile

LICENSE

@@ -1,29 +1,21 @@
-The Mempool Open Source Project
-Copyright (c) 2019-2023 The Mempool Open Source Project Developers
+MIT License
 
-This program is free software; you can redistribute it and/or modify it under
-the terms of (at your option) either:
+Copyright (c) 2019 Simon Lindh
 
- 1) the GNU Affero General Public License as published by the Free Software
- Foundation, either version 3 of the License or any later version approved by a
- proxy statement published on <https://mempool.space/about>; or
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
 
- 2) the GNU General Public License as published by the Free Software
- Foundation, either version 3 of the License or any later version approved by a
- proxy statement published on <https://mempool.space/about>.
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
 
-However, this copyright license does not include an implied right or license to
-use our trademarks: The Mempool Open Source Project™, mempool.space™, the
-mempool Logo™, the mempool.space Vertical Logo™, the mempool.space Horizontal
-Logo™, the mempool Square Logo™, and the mempool Blocks logo™ are registered
-trademarks or trademarks of Mempool Space K.K in Japan, the United States,
-and/or other countries. See our full Trademark Policy and Guidelines for more
-details, published on <https://mempool.space/trademark-policy>.
-
-This program is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
-PARTICULAR PURPOSE. See the full license terms for more details.
-
-You should have received a copy of both the GNU Affero General Public License
-and the GNU General Public License along with this program.  If not, see
-<http://www.gnu.org/licenses/>.
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

LICENSE.AGPL-3.md

@@ -1,660 +0,0 @@
-### GNU AFFERO GENERAL PUBLIC LICENSE
-
-Version 3, 19 November 2007
-
-Copyright (C) 2007 Free Software Foundation, Inc.
-<https://fsf.org/>
-
-Everyone is permitted to copy and distribute verbatim copies of this
-license document, but changing it is not allowed.
-
-### Preamble
-
-The GNU Affero General Public License is a free, copyleft license for
-software and other kinds of works, specifically designed to ensure
-cooperation with the community in the case of network server software.
-
-The licenses for most software and other practical works are designed
-to take away your freedom to share and change the works. By contrast,
-our General Public Licenses are intended to guarantee your freedom to
-share and change all versions of a program--to make sure it remains
-free software for all its users.
-
-When we speak of free software, we are referring to freedom, not
-price. Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-them if you wish), that you receive source code or can get it if you
-want it, that you can change the software or use pieces of it in new
-free programs, and that you know you can do these things.
-
-Developers that use our General Public Licenses protect your rights
-with two steps: (1) assert copyright on the software, and (2) offer
-you this License which gives you legal permission to copy, distribute
-and/or modify the software.
-
-A secondary benefit of defending all users' freedom is that
-improvements made in alternate versions of the program, if they
-receive widespread use, become available for other developers to
-incorporate. Many developers of free software are heartened and
-encouraged by the resulting cooperation. However, in the case of
-software used on network servers, this result may fail to come about.
-The GNU General Public License permits making a modified version and
-letting the public access it on a server without ever releasing its
-source code to the public.
-
-The GNU Affero General Public License is designed specifically to
-ensure that, in such cases, the modified source code becomes available
-to the community. It requires the operator of a network server to
-provide the source code of the modified version running there to the
-users of that server. Therefore, public use of a modified version, on
-a publicly accessible server, gives the public access to the source
-code of the modified version.
-
-An older license, called the Affero General Public License and
-published by Affero, was designed to accomplish similar goals. This is
-a different license, not a version of the Affero GPL, but Affero has
-released a new version of the Affero GPL which permits relicensing
-under this license.
-
-The precise terms and conditions for copying, distribution and
-modification follow.
-
-### TERMS AND CONDITIONS
-
-#### 0. Definitions.
-
-"This License" refers to version 3 of the GNU Affero General Public
-License.
-
-"Copyright" also means copyright-like laws that apply to other kinds
-of works, such as semiconductor masks.
-
-"The Program" refers to any copyrightable work licensed under this
-License. Each licensee is addressed as "you". "Licensees" and
-"recipients" may be individuals or organizations.
-
-To "modify" a work means to copy from or adapt all or part of the work
-in a fashion requiring copyright permission, other than the making of
-an exact copy. The resulting work is called a "modified version" of
-the earlier work or a work "based on" the earlier work.
-
-A "covered work" means either the unmodified Program or a work based
-on the Program.
-
-To "propagate" a work means to do anything with it that, without
-permission, would make you directly or secondarily liable for
-infringement under applicable copyright law, except executing it on a
-computer or modifying a private copy. Propagation includes copying,
-distribution (with or without modification), making available to the
-public, and in some countries other activities as well.
-
-To "convey" a work means any kind of propagation that enables other
-parties to make or receive copies. Mere interaction with a user
-through a computer network, with no transfer of a copy, is not
-conveying.
-
-An interactive user interface displays "Appropriate Legal Notices" to
-the extent that it includes a convenient and prominently visible
-feature that (1) displays an appropriate copyright notice, and (2)
-tells the user that there is no warranty for the work (except to the
-extent that warranties are provided), that licensees may convey the
-work under this License, and how to view a copy of this License. If
-the interface presents a list of user commands or options, such as a
-menu, a prominent item in the list meets this criterion.
-
-#### 1. Source Code.
-
-The "source code" for a work means the preferred form of the work for
-making modifications to it. "Object code" means any non-source form of
-a work.
-
-A "Standard Interface" means an interface that either is an official
-standard defined by a recognized standards body, or, in the case of
-interfaces specified for a particular programming language, one that
-is widely used among developers working in that language.
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-The "System Libraries" of an executable work include anything, other
-than the work as a whole, that (a) is included in the normal form of
-packaging a Major Component, but which is not part of that Major
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-implementation is available to the public in source code form. A
-"Major Component", in this context, means a major essential component
-(kernel, window system, and so on) of the specific operating system
-(if any) on which the executable work runs, or a compiler used to
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-the source code needed to generate, install, and (for an executable
-work) run the object code and to modify the work, including scripts to
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-System Libraries, or general-purpose tools or generally available free
-programs which are used unmodified in performing those activities but
-which are not part of the work. For example, Corresponding Source
-includes interface definition files associated with source files for
-the work, and the source code for shared libraries and dynamically
-linked subprograms that the work is specifically designed to require,
-such as by intimate data communication or control flow between those
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-
-The Corresponding Source need not include anything that users can
-regenerate automatically from other parts of the Corresponding Source.
-
-The Corresponding Source for a work in source code form is that same
-work.
-
-#### 2. Basic Permissions.
-
-All rights granted under this License are granted for the term of
-copyright on the Program, and are irrevocable provided the stated
-conditions are met. This License explicitly affirms your unlimited
-permission to run the unmodified Program. The output from running a
-covered work is covered by this License only if the output, given its
-content, constitutes a covered work. This License acknowledges your
-rights of fair use or other equivalent, as provided by copyright law.
-
-You may make, run and propagate covered works that you do not convey,
-without conditions so long as your license otherwise remains in force.
-You may convey covered works to others for the sole purpose of having
-them make modifications exclusively for you, or provide you with
-facilities for running those works, provided that you comply with the
-terms of this License in conveying all material for which you do not
-control copyright. Those thus making or running the covered works for
-you must do so exclusively on your behalf, under your direction and
-control, on terms that prohibit them from making any copies of your
-copyrighted material outside their relationship with you.
-
-Conveying under any other circumstances is permitted solely under the
-conditions stated below. Sublicensing is not allowed; section 10 makes
-it unnecessary.
-
-#### 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
-
-No covered work shall be deemed part of an effective technological
-measure under any applicable law fulfilling obligations under article
-11 of the WIPO copyright treaty adopted on 20 December 1996, or
-similar laws prohibiting or restricting circumvention of such
-measures.
-
-When you convey a covered work, you waive any legal power to forbid
-circumvention of technological measures to the extent such
-circumvention is effected by exercising rights under this License with
-respect to the covered work, and you disclaim any intention to limit
-operation or modification of the work as a means of enforcing, against
-the work's users, your or third parties' legal rights to forbid
-circumvention of technological measures.
-
-#### 4. Conveying Verbatim Copies.
-
-You may convey verbatim copies of the Program's source code as you
-receive it, in any medium, provided that you conspicuously and
-appropriately publish on each copy an appropriate copyright notice;
-keep intact all notices stating that this License and any
-non-permissive terms added in accord with section 7 apply to the code;
-keep intact all notices of the absence of any warranty; and give all
-recipients a copy of this License along with the Program.
-
-You may charge any price or no price for each copy that you convey,
-and you may offer support or warranty protection for a fee.
-
-#### 5. Conveying Modified Source Versions.
-
-You may convey a work based on the Program, or the modifications to
-produce it from the Program, in the form of source code under the
-terms of section 4, provided that you also meet all of these
-conditions:
-
--   a) The work must carry prominent notices stating that you modified
-    it, and giving a relevant date.
--   b) The work must carry prominent notices stating that it is
-    released under this License and any conditions added under
-    section 7. This requirement modifies the requirement in section 4
-    to "keep intact all notices".
--   c) You must license the entire work, as a whole, under this
-    License to anyone who comes into possession of a copy. This
-    License will therefore apply, along with any applicable section 7
-    additional terms, to the whole of the work, and all its parts,
-    regardless of how they are packaged. This License gives no
-    permission to license the work in any other way, but it does not
-    invalidate such permission if you have separately received it.
--   d) If the work has interactive user interfaces, each must display
-    Appropriate Legal Notices; however, if the Program has interactive
-    interfaces that do not display Appropriate Legal Notices, your
-    work need not make them do so.
-
-A compilation of a covered work with other separate and independent
-works, which are not by their nature extensions of the covered work,
-and which are not combined with it such as to form a larger program,
-in or on a volume of a storage or distribution medium, is called an
-"aggregate" if the compilation and its resulting copyright are not
-used to limit the access or legal rights of the compilation's users
-beyond what the individual works permit. Inclusion of a covered work
-in an aggregate does not cause this License to apply to the other
-parts of the aggregate.
-
-#### 6. Conveying Non-Source Forms.
-
-You may convey a covered work in object code form under the terms of
-sections 4 and 5, provided that you also convey the machine-readable
-Corresponding Source under the terms of this License, in one of these
-ways:
-
--   a) Convey the object code in, or embodied in, a physical product
-    (including a physical distribution medium), accompanied by the
-    Corresponding Source fixed on a durable physical medium
-    customarily used for software interchange.
--   b) Convey the object code in, or embodied in, a physical product
-    (including a physical distribution medium), accompanied by a
-    written offer, valid for at least three years and valid for as
-    long as you offer spare parts or customer support for that product
-    model, to give anyone who possesses the object code either (1) a
-    copy of the Corresponding Source for all the software in the
-    product that is covered by this License, on a durable physical
-    medium customarily used for software interchange, for a price no
-    more than your reasonable cost of physically performing this
-    conveying of source, or (2) access to copy the Corresponding
-    Source from a network server at no charge.
--   c) Convey individual copies of the object code with a copy of the
-    written offer to provide the Corresponding Source. This
-    alternative is allowed only occasionally and noncommercially, and
-    only if you received the object code with such an offer, in accord
-    with subsection 6b.
--   d) Convey the object code by offering access from a designated
-    place (gratis or for a charge), and offer equivalent access to the
-    Corresponding Source in the same way through the same place at no
-    further charge. You need not require recipients to copy the
-    Corresponding Source along with the object code. If the place to
-    copy the object code is a network server, the Corresponding Source
-    may be on a different server (operated by you or a third party)
-    that supports equivalent copying facilities, provided you maintain
-    clear directions next to the object code saying where to find the
-    Corresponding Source. Regardless of what server hosts the
-    Corresponding Source, you remain obligated to ensure that it is
-    available for as long as needed to satisfy these requirements.
--   e) Convey the object code using peer-to-peer transmission,
-    provided you inform other peers where the object code and
-    Corresponding Source of the work are being offered to the general
-    public at no charge under subsection 6d.
-
-A separable portion of the object code, whose source code is excluded
-from the Corresponding Source as a System Library, need not be
-included in conveying the object code work.
-
-A "User Product" is either (1) a "consumer product", which means any
-tangible personal property which is normally used for personal,
-family, or household purposes, or (2) anything designed or sold for
-incorporation into a dwelling. In determining whether a product is a
-consumer product, doubtful cases shall be resolved in favor of
-coverage. For a particular product received by a particular user,
-"normally used" refers to a typical or common use of that class of
-product, regardless of the status of the particular user or of the way
-in which the particular user actually uses, or expects or is expected
-to use, the product. A product is a consumer product regardless of
-whether the product has substantial commercial, industrial or
-non-consumer uses, unless such uses represent the only significant
-mode of use of the product.
-
-"Installation Information" for a User Product means any methods,
-procedures, authorization keys, or other information required to
-install and execute modified versions of a covered work in that User
-Product from a modified version of its Corresponding Source. The
-information must suffice to ensure that the continued functioning of
-the modified object code is in no case prevented or interfered with
-solely because modification has been made.
-
-If you convey an object code work under this section in, or with, or
-specifically for use in, a User Product, and the conveying occurs as
-part of a transaction in which the right of possession and use of the
-User Product is transferred to the recipient in perpetuity or for a
-fixed term (regardless of how the transaction is characterized), the
-Corresponding Source conveyed under this section must be accompanied
-by the Installation Information. But this requirement does not apply
-if neither you nor any third party retains the ability to install
-modified object code on the User Product (for example, the work has
-been installed in ROM).
-
-The requirement to provide Installation Information does not include a
-requirement to continue to provide support service, warranty, or
-updates for a work that has been modified or installed by the
-recipient, or for the User Product in which it has been modified or
-installed. Access to a network may be denied when the modification
-itself materially and adversely affects the operation of the network
-or violates the rules and protocols for communication across the
-network.
-
-Corresponding Source conveyed, and Installation Information provided,
-in accord with this section must be in a format that is publicly
-documented (and with an implementation available to the public in
-source code form), and must require no special password or key for
-unpacking, reading or copying.
-
-#### 7. Additional Terms.
-
-"Additional permissions" are terms that supplement the terms of this
-License by making exceptions from one or more of its conditions.
-Additional permissions that are applicable to the entire Program shall
-be treated as though they were included in this License, to the extent
-that they are valid under applicable law. If additional permissions
-apply only to part of the Program, that part may be used separately
-under those permissions, but the entire Program remains governed by
-this License without regard to the additional permissions.
-
-When you convey a copy of a covered work, you may at your option
-remove any additional permissions from that copy, or from any part of
-it. (Additional permissions may be written to require their own
-removal in certain cases when you modify the work.) You may place
-additional permissions on material, added by you to a covered work,
-for which you have or can give appropriate copyright permission.
-
-Notwithstanding any other provision of this License, for material you
-add to a covered work, you may (if authorized by the copyright holders
-of that material) supplement the terms of this License with terms:
-
--   a) Disclaiming warranty or limiting liability differently from the
-    terms of sections 15 and 16 of this License; or
--   b) Requiring preservation of specified reasonable legal notices or
-    author attributions in that material or in the Appropriate Legal
-    Notices displayed by works containing it; or
--   c) Prohibiting misrepresentation of the origin of that material,
-    or requiring that modified versions of such material be marked in
-    reasonable ways as different from the original version; or
--   d) Limiting the use for publicity purposes of names of licensors
-    or authors of the material; or
--   e) Declining to grant rights under trademark law for use of some
-    trade names, trademarks, or service marks; or
--   f) Requiring indemnification of licensors and authors of that
-    material by anyone who conveys the material (or modified versions
-    of it) with contractual assumptions of liability to the recipient,
-    for any liability that these contractual assumptions directly
-    impose on those licensors and authors.
-
-All other non-permissive additional terms are considered "further
-restrictions" within the meaning of section 10. If the Program as you
-received it, or any part of it, contains a notice stating that it is
-governed by this License along with a term that is a further
-restriction, you may remove that term. If a license document contains
-a further restriction but permits relicensing or conveying under this
-License, you may add to a covered work material governed by the terms
-of that license document, provided that the further restriction does
-not survive such relicensing or conveying.
-
-If you add terms to a covered work in accord with this section, you
-must place, in the relevant source files, a statement of the
-additional terms that apply to those files, or a notice indicating
-where to find the applicable terms.
-
-Additional terms, permissive or non-permissive, may be stated in the
-form of a separately written license, or stated as exceptions; the
-above requirements apply either way.
-
-#### 8. Termination.
-
-You may not propagate or modify a covered work except as expressly
-provided under this License. Any attempt otherwise to propagate or
-modify it is void, and will automatically terminate your rights under
-this License (including any patent licenses granted under the third
-paragraph of section 11).
-
-However, if you cease all violation of this License, then your license
-from a particular copyright holder is reinstated (a) provisionally,
-unless and until the copyright holder explicitly and finally
-terminates your license, and (b) permanently, if the copyright holder
-fails to notify you of the violation by some reasonable means prior to
-60 days after the cessation.
-
-Moreover, your license from a particular copyright holder is
-reinstated permanently if the copyright holder notifies you of the
-violation by some reasonable means, this is the first time you have
-received notice of violation of this License (for any work) from that
-copyright holder, and you cure the violation prior to 30 days after
-your receipt of the notice.
-
-Termination of your rights under this section does not terminate the
-licenses of parties who have received copies or rights from you under
-this License. If your rights have been terminated and not permanently
-reinstated, you do not qualify to receive new licenses for the same
-material under section 10.
-
-#### 9. Acceptance Not Required for Having Copies.
-
-You are not required to accept this License in order to receive or run
-a copy of the Program. Ancillary propagation of a covered work
-occurring solely as a consequence of using peer-to-peer transmission
-to receive a copy likewise does not require acceptance. However,
-nothing other than this License grants you permission to propagate or
-modify any covered work. These actions infringe copyright if you do
-not accept this License. Therefore, by modifying or propagating a
-covered work, you indicate your acceptance of this License to do so.
-
-#### 10. Automatic Licensing of Downstream Recipients.
-
-Each time you convey a covered work, the recipient automatically
-receives a license from the original licensors, to run, modify and
-propagate that work, subject to this License. You are not responsible
-for enforcing compliance by third parties with this License.
-
-An "entity transaction" is a transaction transferring control of an
-organization, or substantially all assets of one, or subdividing an
-organization, or merging organizations. If propagation of a covered
-work results from an entity transaction, each party to that
-transaction who receives a copy of the work also receives whatever
-licenses to the work the party's predecessor in interest had or could
-give under the previous paragraph, plus a right to possession of the
-Corresponding Source of the work from the predecessor in interest, if
-the predecessor has it or can get it with reasonable efforts.
-
-You may not impose any further restrictions on the exercise of the
-rights granted or affirmed under this License. For example, you may
-not impose a license fee, royalty, or other charge for exercise of
-rights granted under this License, and you may not initiate litigation
-(including a cross-claim or counterclaim in a lawsuit) alleging that
-any patent claim is infringed by making, using, selling, offering for
-sale, or importing the Program or any portion of it.
-
-#### 11. Patents.
-
-A "contributor" is a copyright holder who authorizes use under this
-License of the Program or a work on which the Program is based. The
-work thus licensed is called the contributor's "contributor version".
-
-A contributor's "essential patent claims" are all patent claims owned
-or controlled by the contributor, whether already acquired or
-hereafter acquired, that would be infringed by some manner, permitted
-by this License, of making, using, or selling its contributor version,
-but do not include claims that would be infringed only as a
-consequence of further modification of the contributor version. For
-purposes of this definition, "control" includes the right to grant
-patent sublicenses in a manner consistent with the requirements of
-this License.
-
-Each contributor grants you a non-exclusive, worldwide, royalty-free
-patent license under the contributor's essential patent claims, to
-make, use, sell, offer for sale, import and otherwise run, modify and
-propagate the contents of its contributor version.
-
-In the following three paragraphs, a "patent license" is any express
-agreement or commitment, however denominated, not to enforce a patent
-(such as an express permission to practice a patent or covenant not to
-sue for patent infringement). To "grant" such a patent license to a
-party means to make such an agreement or commitment not to enforce a
-patent against the party.
-
-If you convey a covered work, knowingly relying on a patent license,
-and the Corresponding Source of the work is not available for anyone
-to copy, free of charge and under the terms of this License, through a
-publicly available network server or other readily accessible means,
-then you must either (1) cause the Corresponding Source to be so
-available, or (2) arrange to deprive yourself of the benefit of the
-patent license for this particular work, or (3) arrange, in a manner
-consistent with the requirements of this License, to extend the patent
-license to downstream recipients. "Knowingly relying" means you have
-actual knowledge that, but for the patent license, your conveying the
-covered work in a country, or your recipient's use of the covered work
-in a country, would infringe one or more identifiable patents in that
-country that you have reason to believe are valid.
-
-If, pursuant to or in connection with a single transaction or
-arrangement, you convey, or propagate by procuring conveyance of, a
-covered work, and grant a patent license to some of the parties
-receiving the covered work authorizing them to use, propagate, modify
-or convey a specific copy of the covered work, then the patent license
-you grant is automatically extended to all recipients of the covered
-work and works based on it.
-
-A patent license is "discriminatory" if it does not include within the
-scope of its coverage, prohibits the exercise of, or is conditioned on
-the non-exercise of one or more of the rights that are specifically
-granted under this License. You may not convey a covered work if you
-are a party to an arrangement with a third party that is in the
-business of distributing software, under which you make payment to the
-third party based on the extent of your activity of conveying the
-work, and under which the third party grants, to any of the parties
-who would receive the covered work from you, a discriminatory patent
-license (a) in connection with copies of the covered work conveyed by
-you (or copies made from those copies), or (b) primarily for and in
-connection with specific products or compilations that contain the
-covered work, unless you entered into that arrangement, or that patent
-license was granted, prior to 28 March 2007.
-
-Nothing in this License shall be construed as excluding or limiting
-any implied license or other defenses to infringement that may
-otherwise be available to you under applicable patent law.
-
-#### 12. No Surrender of Others' Freedom.
-
-If conditions are imposed on you (whether by court order, agreement or
-otherwise) that contradict the conditions of this License, they do not
-excuse you from the conditions of this License. If you cannot convey a
-covered work so as to satisfy simultaneously your obligations under
-this License and any other pertinent obligations, then as a
-consequence you may not convey it at all. For example, if you agree to
-terms that obligate you to collect a royalty for further conveying
-from those to whom you convey the Program, the only way you could
-satisfy both those terms and this License would be to refrain entirely
-from conveying the Program.
-
-#### 13. Remote Network Interaction; Use with the GNU General Public License.
-
-Notwithstanding any other provision of this License, if you modify the
-Program, your modified version must prominently offer all users
-interacting with it remotely through a computer network (if your
-version supports such interaction) an opportunity to receive the
-Corresponding Source of your version by providing access to the
-Corresponding Source from a network server at no charge, through some
-standard or customary means of facilitating copying of software. This
-Corresponding Source shall include the Corresponding Source for any
-work covered by version 3 of the GNU General Public License that is
-incorporated pursuant to the following paragraph.
-
-Notwithstanding any other provision of this License, you have
-permission to link or combine any covered work with a work licensed
-under version 3 of the GNU General Public License into a single
-combined work, and to convey the resulting work. The terms of this
-License will continue to apply to the part which is the covered work,
-but the work with which it is combined will remain governed by version
-3 of the GNU General Public License.
-
-#### 14. Revised Versions of this License.
-
-The Free Software Foundation may publish revised and/or new versions
-of the GNU Affero General Public License from time to time. Such new
-versions will be similar in spirit to the present version, but may
-differ in detail to address new problems or concerns.
-
-Each version is given a distinguishing version number. If the Program
-specifies that a certain numbered version of the GNU Affero General
-Public License "or any later version" applies to it, you have the
-option of following the terms and conditions either of that numbered
-version or of any later version published by the Free Software
-Foundation. If the Program does not specify a version number of the
-GNU Affero General Public License, you may choose any version ever
-published by the Free Software Foundation.
-
-If the Program specifies that a proxy can decide which future versions
-of the GNU Affero General Public License can be used, that proxy's
-public statement of acceptance of a version permanently authorizes you
-to choose that version for the Program.
-
-Later license versions may give you additional or different
-permissions. However, no additional obligations are imposed on any
-author or copyright holder as a result of your choosing to follow a
-later version.
-
-#### 15. Disclaimer of Warranty.
-
-THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
-APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
-HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT
-WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
-PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
-DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
-CORRECTION.
-
-#### 16. Limitation of Liability.
-
-IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
-CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
-ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
-NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
-LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
-TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
-PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
-
-#### 17. Interpretation of Sections 15 and 16.
-
-If the disclaimer of warranty and limitation of liability provided
-above cannot be given local legal effect according to their terms,
-reviewing courts shall apply local law that most closely approximates
-an absolute waiver of all civil liability in connection with the
-Program, unless a warranty or assumption of liability accompanies a
-copy of the Program in return for a fee.
-
-END OF TERMS AND CONDITIONS
-
-### How to Apply These Terms to Your New Programs
-
-If you develop a new program, and you want it to be of the greatest
-possible use to the public, the best way to achieve this is to make it
-free software which everyone can redistribute and change under these
-terms.
-
-To do so, attach the following notices to the program. It is safest to
-attach them to the start of each source file to most effectively state
-the exclusion of warranty; and each file should have at least the
-"copyright" line and a pointer to where the full notice is found.
-
-        <one line to give the program's name and a brief idea of what it does.>
-        Copyright (C) <year>  <name of author>
-
-        This program is free software: you can redistribute it and/or modify
-        it under the terms of the GNU Affero General Public License as
-        published by the Free Software Foundation, either version 3 of the
-        License, or (at your option) any later version.
-
-        This program is distributed in the hope that it will be useful,
-        but WITHOUT ANY WARRANTY; without even the implied warranty of
-        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-        GNU Affero General Public License for more details.
-
-        You should have received a copy of the GNU Affero General Public License
-        along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-Also add information on how to contact you by electronic and paper
-mail.
-
-If your software can interact with users remotely through a computer
-network, you should also make sure that it provides a way for users to
-get its source. For example, if your program is a web application, its
-interface could display a "Source" link that leads users to an archive
-of the code. There are many ways you could offer source, and different
-solutions will be better for different programs; see section 13 for
-the specific requirements.
-
-You should also get your employer (if you work as a programmer) or
-school, if any, to sign a "copyright disclaimer" for the program, if
-necessary. For more information on this, and how to apply and follow
-the GNU AGPL, see <https://www.gnu.org/licenses/>.

LICENSE.GPL-3.md

@@ -1,675 +0,0 @@
-### GNU GENERAL PUBLIC LICENSE
-
-Version 3, 29 June 2007
-
-Copyright (C) 2007 Free Software Foundation, Inc.
-<https://fsf.org/>
-
-Everyone is permitted to copy and distribute verbatim copies of this
-license document, but changing it is not allowed.
-
-### Preamble
-
-The GNU General Public License is a free, copyleft license for
-software and other kinds of works.
-
-The licenses for most software and other practical works are designed
-to take away your freedom to share and change the works. By contrast,
-the GNU General Public License is intended to guarantee your freedom
-to share and change all versions of a program--to make sure it remains
-free software for all its users. We, the Free Software Foundation, use
-the GNU General Public License for most of our software; it applies
-also to any other work released this way by its authors. You can apply
-it to your programs, too.
-
-When we speak of free software, we are referring to freedom, not
-price. Our General Public Licenses are designed to make sure that you
-have the freedom to distribute copies of free software (and charge for
-them if you wish), that you receive source code or can get it if you
-want it, that you can change the software or use pieces of it in new
-free programs, and that you know you can do these things.
-
-To protect your rights, we need to prevent others from denying you
-these rights or asking you to surrender the rights. Therefore, you
-have certain responsibilities if you distribute copies of the
-software, or if you modify it: responsibilities to respect the freedom
-of others.
-
-For example, if you distribute copies of such a program, whether
-gratis or for a fee, you must pass on to the recipients the same
-freedoms that you received. You must make sure that they, too, receive
-or can get the source code. And you must show them these terms so they
-know their rights.
-
-Developers that use the GNU GPL protect your rights with two steps:
-(1) assert copyright on the software, and (2) offer you this License
-giving you legal permission to copy, distribute and/or modify it.
-
-For the developers' and authors' protection, the GPL clearly explains
-that there is no warranty for this free software. For both users' and
-authors' sake, the GPL requires that modified versions be marked as
-changed, so that their problems will not be attributed erroneously to
-authors of previous versions.
-
-Some devices are designed to deny users access to install or run
-modified versions of the software inside them, although the
-manufacturer can do so. This is fundamentally incompatible with the
-aim of protecting users' freedom to change the software. The
-systematic pattern of such abuse occurs in the area of products for
-individuals to use, which is precisely where it is most unacceptable.
-Therefore, we have designed this version of the GPL to prohibit the
-practice for those products. If such problems arise substantially in
-other domains, we stand ready to extend this provision to those
-domains in future versions of the GPL, as needed to protect the
-freedom of users.
-
-Finally, every program is threatened constantly by software patents.
-States should not allow patents to restrict development and use of
-software on general-purpose computers, but in those that do, we wish
-to avoid the special danger that patents applied to a free program
-could make it effectively proprietary. To prevent this, the GPL
-assures that patents cannot be used to render the program non-free.
-
-The precise terms and conditions for copying, distribution and
-modification follow.
-
-### TERMS AND CONDITIONS
-
-#### 0. Definitions.
-
-"This License" refers to version 3 of the GNU General Public License.
-
-"Copyright" also means copyright-like laws that apply to other kinds
-of works, such as semiconductor masks.
-
-"The Program" refers to any copyrightable work licensed under this
-License. Each licensee is addressed as "you". "Licensees" and
-"recipients" may be individuals or organizations.
-
-To "modify" a work means to copy from or adapt all or part of the work
-in a fashion requiring copyright permission, other than the making of
-an exact copy. The resulting work is called a "modified version" of
-the earlier work or a work "based on" the earlier work.
-
-A "covered work" means either the unmodified Program or a work based
-on the Program.
-
-To "propagate" a work means to do anything with it that, without
-permission, would make you directly or secondarily liable for
-infringement under applicable copyright law, except executing it on a
-computer or modifying a private copy. Propagation includes copying,
-distribution (with or without modification), making available to the
-public, and in some countries other activities as well.
-
-To "convey" a work means any kind of propagation that enables other
-parties to make or receive copies. Mere interaction with a user
-through a computer network, with no transfer of a copy, is not
-conveying.
-
-An interactive user interface displays "Appropriate Legal Notices" to
-the extent that it includes a convenient and prominently visible
-feature that (1) displays an appropriate copyright notice, and (2)
-tells the user that there is no warranty for the work (except to the
-extent that warranties are provided), that licensees may convey the
-work under this License, and how to view a copy of this License. If
-the interface presents a list of user commands or options, such as a
-menu, a prominent item in the list meets this criterion.
-
-#### 1. Source Code.
-
-The "source code" for a work means the preferred form of the work for
-making modifications to it. "Object code" means any non-source form of
-a work.
-
-A "Standard Interface" means an interface that either is an official
-standard defined by a recognized standards body, or, in the case of
-interfaces specified for a particular programming language, one that
-is widely used among developers working in that language.
-
-The "System Libraries" of an executable work include anything, other
-than the work as a whole, that (a) is included in the normal form of
-packaging a Major Component, but which is not part of that Major
-Component, and (b) serves only to enable use of the work with that
-Major Component, or to implement a Standard Interface for which an
-implementation is available to the public in source code form. A
-"Major Component", in this context, means a major essential component
-(kernel, window system, and so on) of the specific operating system
-(if any) on which the executable work runs, or a compiler used to
-produce the work, or an object code interpreter used to run it.
-
-The "Corresponding Source" for a work in object code form means all
-the source code needed to generate, install, and (for an executable
-work) run the object code and to modify the work, including scripts to
-control those activities. However, it does not include the work's
-System Libraries, or general-purpose tools or generally available free
-programs which are used unmodified in performing those activities but
-which are not part of the work. For example, Corresponding Source
-includes interface definition files associated with source files for
-the work, and the source code for shared libraries and dynamically
-linked subprograms that the work is specifically designed to require,
-such as by intimate data communication or control flow between those
-subprograms and other parts of the work.
-
-The Corresponding Source need not include anything that users can
-regenerate automatically from other parts of the Corresponding Source.
-
-The Corresponding Source for a work in source code form is that same
-work.
-
-#### 2. Basic Permissions.
-
-All rights granted under this License are granted for the term of
-copyright on the Program, and are irrevocable provided the stated
-conditions are met. This License explicitly affirms your unlimited
-permission to run the unmodified Program. The output from running a
-covered work is covered by this License only if the output, given its
-content, constitutes a covered work. This License acknowledges your
-rights of fair use or other equivalent, as provided by copyright law.
-
-You may make, run and propagate covered works that you do not convey,
-without conditions so long as your license otherwise remains in force.
-You may convey covered works to others for the sole purpose of having
-them make modifications exclusively for you, or provide you with
-facilities for running those works, provided that you comply with the
-terms of this License in conveying all material for which you do not
-control copyright. Those thus making or running the covered works for
-you must do so exclusively on your behalf, under your direction and
-control, on terms that prohibit them from making any copies of your
-copyrighted material outside their relationship with you.
-
-Conveying under any other circumstances is permitted solely under the
-conditions stated below. Sublicensing is not allowed; section 10 makes
-it unnecessary.
-
-#### 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
-
-No covered work shall be deemed part of an effective technological
-measure under any applicable law fulfilling obligations under article
-11 of the WIPO copyright treaty adopted on 20 December 1996, or
-similar laws prohibiting or restricting circumvention of such
-measures.
-
-When you convey a covered work, you waive any legal power to forbid
-circumvention of technological measures to the extent such
-circumvention is effected by exercising rights under this License with
-respect to the covered work, and you disclaim any intention to limit
-operation or modification of the work as a means of enforcing, against
-the work's users, your or third parties' legal rights to forbid
-circumvention of technological measures.
-
-#### 4. Conveying Verbatim Copies.
-
-You may convey verbatim copies of the Program's source code as you
-receive it, in any medium, provided that you conspicuously and
-appropriately publish on each copy an appropriate copyright notice;
-keep intact all notices stating that this License and any
-non-permissive terms added in accord with section 7 apply to the code;
-keep intact all notices of the absence of any warranty; and give all
-recipients a copy of this License along with the Program.
-
-You may charge any price or no price for each copy that you convey,
-and you may offer support or warranty protection for a fee.
-
-#### 5. Conveying Modified Source Versions.
-
-You may convey a work based on the Program, or the modifications to
-produce it from the Program, in the form of source code under the
-terms of section 4, provided that you also meet all of these
-conditions:
-
--   a) The work must carry prominent notices stating that you modified
-    it, and giving a relevant date.
--   b) The work must carry prominent notices stating that it is
-    released under this License and any conditions added under
-    section 7. This requirement modifies the requirement in section 4
-    to "keep intact all notices".
--   c) You must license the entire work, as a whole, under this
-    License to anyone who comes into possession of a copy. This
-    License will therefore apply, along with any applicable section 7
-    additional terms, to the whole of the work, and all its parts,
-    regardless of how they are packaged. This License gives no
-    permission to license the work in any other way, but it does not
-    invalidate such permission if you have separately received it.
--   d) If the work has interactive user interfaces, each must display
-    Appropriate Legal Notices; however, if the Program has interactive
-    interfaces that do not display Appropriate Legal Notices, your
-    work need not make them do so.
-
-A compilation of a covered work with other separate and independent
-works, which are not by their nature extensions of the covered work,
-and which are not combined with it such as to form a larger program,
-in or on a volume of a storage or distribution medium, is called an
-"aggregate" if the compilation and its resulting copyright are not
-used to limit the access or legal rights of the compilation's users
-beyond what the individual works permit. Inclusion of a covered work
-in an aggregate does not cause this License to apply to the other
-parts of the aggregate.
-
-#### 6. Conveying Non-Source Forms.
-
-You may convey a covered work in object code form under the terms of
-sections 4 and 5, provided that you also convey the machine-readable
-Corresponding Source under the terms of this License, in one of these
-ways:
-
--   a) Convey the object code in, or embodied in, a physical product
-    (including a physical distribution medium), accompanied by the
-    Corresponding Source fixed on a durable physical medium
-    customarily used for software interchange.
--   b) Convey the object code in, or embodied in, a physical product
-    (including a physical distribution medium), accompanied by a
-    written offer, valid for at least three years and valid for as
-    long as you offer spare parts or customer support for that product
-    model, to give anyone who possesses the object code either (1) a
-    copy of the Corresponding Source for all the software in the
-    product that is covered by this License, on a durable physical
-    medium customarily used for software interchange, for a price no
-    more than your reasonable cost of physically performing this
-    conveying of source, or (2) access to copy the Corresponding
-    Source from a network server at no charge.
--   c) Convey individual copies of the object code with a copy of the
-    written offer to provide the Corresponding Source. This
-    alternative is allowed only occasionally and noncommercially, and
-    only if you received the object code with such an offer, in accord
-    with subsection 6b.
--   d) Convey the object code by offering access from a designated
-    place (gratis or for a charge), and offer equivalent access to the
-    Corresponding Source in the same way through the same place at no
-    further charge. You need not require recipients to copy the
-    Corresponding Source along with the object code. If the place to
-    copy the object code is a network server, the Corresponding Source
-    may be on a different server (operated by you or a third party)
-    that supports equivalent copying facilities, provided you maintain
-    clear directions next to the object code saying where to find the
-    Corresponding Source. Regardless of what server hosts the
-    Corresponding Source, you remain obligated to ensure that it is
-    available for as long as needed to satisfy these requirements.
--   e) Convey the object code using peer-to-peer transmission,
-    provided you inform other peers where the object code and
-    Corresponding Source of the work are being offered to the general
-    public at no charge under subsection 6d.
-
-A separable portion of the object code, whose source code is excluded
-from the Corresponding Source as a System Library, need not be
-included in conveying the object code work.
-
-A "User Product" is either (1) a "consumer product", which means any
-tangible personal property which is normally used for personal,
-family, or household purposes, or (2) anything designed or sold for
-incorporation into a dwelling. In determining whether a product is a
-consumer product, doubtful cases shall be resolved in favor of
-coverage. For a particular product received by a particular user,
-"normally used" refers to a typical or common use of that class of
-product, regardless of the status of the particular user or of the way
-in which the particular user actually uses, or expects or is expected
-to use, the product. A product is a consumer product regardless of
-whether the product has substantial commercial, industrial or
-non-consumer uses, unless such uses represent the only significant
-mode of use of the product.
-
-"Installation Information" for a User Product means any methods,
-procedures, authorization keys, or other information required to
-install and execute modified versions of a covered work in that User
-Product from a modified version of its Corresponding Source. The
-information must suffice to ensure that the continued functioning of
-the modified object code is in no case prevented or interfered with
-solely because modification has been made.
-
-If you convey an object code work under this section in, or with, or
-specifically for use in, a User Product, and the conveying occurs as
-part of a transaction in which the right of possession and use of the
-User Product is transferred to the recipient in perpetuity or for a
-fixed term (regardless of how the transaction is characterized), the
-Corresponding Source conveyed under this section must be accompanied
-by the Installation Information. But this requirement does not apply
-if neither you nor any third party retains the ability to install
-modified object code on the User Product (for example, the work has
-been installed in ROM).
-
-The requirement to provide Installation Information does not include a
-requirement to continue to provide support service, warranty, or
-updates for a work that has been modified or installed by the
-recipient, or for the User Product in which it has been modified or
-installed. Access to a network may be denied when the modification
-itself materially and adversely affects the operation of the network
-or violates the rules and protocols for communication across the
-network.
-
-Corresponding Source conveyed, and Installation Information provided,
-in accord with this section must be in a format that is publicly
-documented (and with an implementation available to the public in
-source code form), and must require no special password or key for
-unpacking, reading or copying.
-
-#### 7. Additional Terms.
-
-"Additional permissions" are terms that supplement the terms of this
-License by making exceptions from one or more of its conditions.
-Additional permissions that are applicable to the entire Program shall
-be treated as though they were included in this License, to the extent
-that they are valid under applicable law. If additional permissions
-apply only to part of the Program, that part may be used separately
-under those permissions, but the entire Program remains governed by
-this License without regard to the additional permissions.
-
-When you convey a copy of a covered work, you may at your option
-remove any additional permissions from that copy, or from any part of
-it. (Additional permissions may be written to require their own
-removal in certain cases when you modify the work.) You may place
-additional permissions on material, added by you to a covered work,
-for which you have or can give appropriate copyright permission.
-
-Notwithstanding any other provision of this License, for material you
-add to a covered work, you may (if authorized by the copyright holders
-of that material) supplement the terms of this License with terms:
-
--   a) Disclaiming warranty or limiting liability differently from the
-    terms of sections 15 and 16 of this License; or
--   b) Requiring preservation of specified reasonable legal notices or
-    author attributions in that material or in the Appropriate Legal
-    Notices displayed by works containing it; or
--   c) Prohibiting misrepresentation of the origin of that material,
-    or requiring that modified versions of such material be marked in
-    reasonable ways as different from the original version; or
--   d) Limiting the use for publicity purposes of names of licensors
-    or authors of the material; or
--   e) Declining to grant rights under trademark law for use of some
-    trade names, trademarks, or service marks; or
--   f) Requiring indemnification of licensors and authors of that
-    material by anyone who conveys the material (or modified versions
-    of it) with contractual assumptions of liability to the recipient,
-    for any liability that these contractual assumptions directly
-    impose on those licensors and authors.
-
-All other non-permissive additional terms are considered "further
-restrictions" within the meaning of section 10. If the Program as you
-received it, or any part of it, contains a notice stating that it is
-governed by this License along with a term that is a further
-restriction, you may remove that term. If a license document contains
-a further restriction but permits relicensing or conveying under this
-License, you may add to a covered work material governed by the terms
-of that license document, provided that the further restriction does
-not survive such relicensing or conveying.
-
-If you add terms to a covered work in accord with this section, you
-must place, in the relevant source files, a statement of the
-additional terms that apply to those files, or a notice indicating
-where to find the applicable terms.
-
-Additional terms, permissive or non-permissive, may be stated in the
-form of a separately written license, or stated as exceptions; the
-above requirements apply either way.
-
-#### 8. Termination.
-
-You may not propagate or modify a covered work except as expressly
-provided under this License. Any attempt otherwise to propagate or
-modify it is void, and will automatically terminate your rights under
-this License (including any patent licenses granted under the third
-paragraph of section 11).
-
-However, if you cease all violation of this License, then your license
-from a particular copyright holder is reinstated (a) provisionally,
-unless and until the copyright holder explicitly and finally
-terminates your license, and (b) permanently, if the copyright holder
-fails to notify you of the violation by some reasonable means prior to
-60 days after the cessation.
-
-Moreover, your license from a particular copyright holder is
-reinstated permanently if the copyright holder notifies you of the
-violation by some reasonable means, this is the first time you have
-received notice of violation of this License (for any work) from that
-copyright holder, and you cure the violation prior to 30 days after
-your receipt of the notice.
-
-Termination of your rights under this section does not terminate the
-licenses of parties who have received copies or rights from you under
-this License. If your rights have been terminated and not permanently
-reinstated, you do not qualify to receive new licenses for the same
-material under section 10.
-
-#### 9. Acceptance Not Required for Having Copies.
-
-You are not required to accept this License in order to receive or run
-a copy of the Program. Ancillary propagation of a covered work
-occurring solely as a consequence of using peer-to-peer transmission
-to receive a copy likewise does not require acceptance. However,
-nothing other than this License grants you permission to propagate or
-modify any covered work. These actions infringe copyright if you do
-not accept this License. Therefore, by modifying or propagating a
-covered work, you indicate your acceptance of this License to do so.
-
-#### 10. Automatic Licensing of Downstream Recipients.
-
-Each time you convey a covered work, the recipient automatically
-receives a license from the original licensors, to run, modify and
-propagate that work, subject to this License. You are not responsible
-for enforcing compliance by third parties with this License.
-
-An "entity transaction" is a transaction transferring control of an
-organization, or substantially all assets of one, or subdividing an
-organization, or merging organizations. If propagation of a covered
-work results from an entity transaction, each party to that
-transaction who receives a copy of the work also receives whatever
-licenses to the work the party's predecessor in interest had or could
-give under the previous paragraph, plus a right to possession of the
-Corresponding Source of the work from the predecessor in interest, if
-the predecessor has it or can get it with reasonable efforts.
-
-You may not impose any further restrictions on the exercise of the
-rights granted or affirmed under this License. For example, you may
-not impose a license fee, royalty, or other charge for exercise of
-rights granted under this License, and you may not initiate litigation
-(including a cross-claim or counterclaim in a lawsuit) alleging that
-any patent claim is infringed by making, using, selling, offering for
-sale, or importing the Program or any portion of it.
-
-#### 11. Patents.
-
-A "contributor" is a copyright holder who authorizes use under this
-License of the Program or a work on which the Program is based. The
-work thus licensed is called the contributor's "contributor version".
-
-A contributor's "essential patent claims" are all patent claims owned
-or controlled by the contributor, whether already acquired or
-hereafter acquired, that would be infringed by some manner, permitted
-by this License, of making, using, or selling its contributor version,
-but do not include claims that would be infringed only as a
-consequence of further modification of the contributor version. For
-purposes of this definition, "control" includes the right to grant
-patent sublicenses in a manner consistent with the requirements of
-this License.
-
-Each contributor grants you a non-exclusive, worldwide, royalty-free
-patent license under the contributor's essential patent claims, to
-make, use, sell, offer for sale, import and otherwise run, modify and
-propagate the contents of its contributor version.
-
-In the following three paragraphs, a "patent license" is any express
-agreement or commitment, however denominated, not to enforce a patent
-(such as an express permission to practice a patent or covenant not to
-sue for patent infringement). To "grant" such a patent license to a
-party means to make such an agreement or commitment not to enforce a
-patent against the party.
-
-If you convey a covered work, knowingly relying on a patent license,
-and the Corresponding Source of the work is not available for anyone
-to copy, free of charge and under the terms of this License, through a
-publicly available network server or other readily accessible means,
-then you must either (1) cause the Corresponding Source to be so
-available, or (2) arrange to deprive yourself of the benefit of the
-patent license for this particular work, or (3) arrange, in a manner
-consistent with the requirements of this License, to extend the patent
-license to downstream recipients. "Knowingly relying" means you have
-actual knowledge that, but for the patent license, your conveying the
-covered work in a country, or your recipient's use of the covered work
-in a country, would infringe one or more identifiable patents in that
-country that you have reason to believe are valid.
-
-If, pursuant to or in connection with a single transaction or
-arrangement, you convey, or propagate by procuring conveyance of, a
-covered work, and grant a patent license to some of the parties
-receiving the covered work authorizing them to use, propagate, modify
-or convey a specific copy of the covered work, then the patent license
-you grant is automatically extended to all recipients of the covered
-work and works based on it.
-
-A patent license is "discriminatory" if it does not include within the
-scope of its coverage, prohibits the exercise of, or is conditioned on
-the non-exercise of one or more of the rights that are specifically
-granted under this License. You may not convey a covered work if you
-are a party to an arrangement with a third party that is in the
-business of distributing software, under which you make payment to the
-third party based on the extent of your activity of conveying the
-work, and under which the third party grants, to any of the parties
-who would receive the covered work from you, a discriminatory patent
-license (a) in connection with copies of the covered work conveyed by
-you (or copies made from those copies), or (b) primarily for and in
-connection with specific products or compilations that contain the
-covered work, unless you entered into that arrangement, or that patent
-license was granted, prior to 28 March 2007.
-
-Nothing in this License shall be construed as excluding or limiting
-any implied license or other defenses to infringement that may
-otherwise be available to you under applicable patent law.
-
-#### 12. No Surrender of Others' Freedom.
-
-If conditions are imposed on you (whether by court order, agreement or
-otherwise) that contradict the conditions of this License, they do not
-excuse you from the conditions of this License. If you cannot convey a
-covered work so as to satisfy simultaneously your obligations under
-this License and any other pertinent obligations, then as a
-consequence you may not convey it at all. For example, if you agree to
-terms that obligate you to collect a royalty for further conveying
-from those to whom you convey the Program, the only way you could
-satisfy both those terms and this License would be to refrain entirely
-from conveying the Program.
-
-#### 13. Use with the GNU Affero General Public License.
-
-Notwithstanding any other provision of this License, you have
-permission to link or combine any covered work with a work licensed
-under version 3 of the GNU Affero General Public License into a single
-combined work, and to convey the resulting work. The terms of this
-License will continue to apply to the part which is the covered work,
-but the special requirements of the GNU Affero General Public License,
-section 13, concerning interaction through a network will apply to the
-combination as such.
-
-#### 14. Revised Versions of this License.
-
-The Free Software Foundation may publish revised and/or new versions
-of the GNU General Public License from time to time. Such new versions
-will be similar in spirit to the present version, but may differ in
-detail to address new problems or concerns.
-
-Each version is given a distinguishing version number. If the Program
-specifies that a certain numbered version of the GNU General Public
-License "or any later version" applies to it, you have the option of
-following the terms and conditions either of that numbered version or
-of any later version published by the Free Software Foundation. If the
-Program does not specify a version number of the GNU General Public
-License, you may choose any version ever published by the Free
-Software Foundation.
-
-If the Program specifies that a proxy can decide which future versions
-of the GNU General Public License can be used, that proxy's public
-statement of acceptance of a version permanently authorizes you to
-choose that version for the Program.
-
-Later license versions may give you additional or different
-permissions. However, no additional obligations are imposed on any
-author or copyright holder as a result of your choosing to follow a
-later version.
-
-#### 15. Disclaimer of Warranty.
-
-THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
-APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
-HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT
-WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
-LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
-PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
-DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
-CORRECTION.
-
-#### 16. Limitation of Liability.
-
-IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
-CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
-ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
-NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
-LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
-TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
-PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
-
-#### 17. Interpretation of Sections 15 and 16.
-
-If the disclaimer of warranty and limitation of liability provided
-above cannot be given local legal effect according to their terms,
-reviewing courts shall apply local law that most closely approximates
-an absolute waiver of all civil liability in connection with the
-Program, unless a warranty or assumption of liability accompanies a
-copy of the Program in return for a fee.
-
-END OF TERMS AND CONDITIONS
-
-### How to Apply These Terms to Your New Programs
-
-If you develop a new program, and you want it to be of the greatest
-possible use to the public, the best way to achieve this is to make it
-free software which everyone can redistribute and change under these
-terms.
-
-To do so, attach the following notices to the program. It is safest to
-attach them to the start of each source file to most effectively state
-the exclusion of warranty; and each file should have at least the
-"copyright" line and a pointer to where the full notice is found.
-
-        <one line to give the program's name and a brief idea of what it does.>
-        Copyright (C) <year>  <name of author>
-
-        This program is free software: you can redistribute it and/or modify
-        it under the terms of the GNU General Public License as published by
-        the Free Software Foundation, either version 3 of the License, or
-        (at your option) any later version.
-
-        This program is distributed in the hope that it will be useful,
-        but WITHOUT ANY WARRANTY; without even the implied warranty of
-        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-        GNU General Public License for more details.
-
-        You should have received a copy of the GNU General Public License
-        along with this program.  If not, see <https://www.gnu.org/licenses/>.
-
-Also add information on how to contact you by electronic and paper
-mail.
-
-If the program does terminal interaction, make it output a short
-notice like this when it starts in an interactive mode:
-
-        <program>  Copyright (C) <year>  <name of author>
-        This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
-        This is free software, and you are welcome to redistribute it
-        under certain conditions; type `show c' for details.
-
-The hypothetical commands \`show w' and \`show c' should show the
-appropriate parts of the General Public License. Of course, your
-program's commands might be different; for a GUI interface, you would
-use an "about box".
-
-You should also get your employer (if you work as a programmer) or
-school, if any, to sign a "copyright disclaimer" for the program, if
-necessary. For more information on this, and how to apply and follow
-the GNU GPL, see <https://www.gnu.org/licenses/>.
-
-The GNU General Public License does not permit incorporating your
-program into proprietary programs. If your program is a subroutine
-library, you may consider it more useful to permit linking proprietary
-applications with the library. If this is what you want to do, use the
-GNU Lesser General Public License instead of this License. But first,
-please read <https://www.gnu.org/licenses/why-not-lgpl.html>.

Makefile

@@ -1 +0,0 @@
-# For additional configs/scripting

README.md

@@ -1,35 +1,208 @@
-# The Mempool Open Source Project™ [![mempool](https://img.shields.io/endpoint?url=https://dashboard.cypress.io/badge/simple/ry4br7/master&style=flat-square)](https://dashboard.cypress.io/projects/ry4br7/runs)
+# mempool
+## a mempool visualizer and explorer for Bitcoin
 
-https://user-images.githubusercontent.com/232186/222445818-234aa6c9-c233-4c52-b3f0-e32b8232893b.mp4
+![mempool](https://pbs.twimg.com/media/EAETXWCU4AAv2v-?format=jpg&name=4096x4096)
+![blockchain](https://pbs.twimg.com/media/EAETXWAU8AAj4IP?format=jpg&name=4096x4096)
 
-Mempool is the fully-featured mempool visualizer, explorer, and API service running at [mempool.space](https://mempool.space/). 
+## Pick the right version for your use case
 
-It is an open-source project developed and operated for the benefit of the Bitcoin community, with a focus on the emerging transaction fee market that is evolving Bitcoin into a multi-layer ecosystem.
+Mempool V1 has basic explorer functionality and can run from a Bitcoin Core full node on a Raspberry Pi (no pruning, txindex=1).
 
-![mempool](https://mempool.space/resources/screenshots/v2.4.0-dashboard.png)
+Mempool V2 is what runs on https://mempool.space and has advanced explorer functionality, but requires a fully synced electrs backend running on powerful server hardware.
 
-# Installation Methods
+# Mempool V1 using Docker (easy)
 
-Mempool can be self-hosted on a wide variety of your own hardware, ranging from a simple one-click installation on a Raspberry Pi full-node distro all the way to a robust production instance on a powerful FreeBSD server. 
+Install from Docker Hub, passing your Bitcoin Core RPC credentials as environment variables:
 
-**Most people should use a one-click install method.** Other install methods are meant for developers and others with experience managing servers. 
+```bash
+docker pull mempool/mempool:v1.0
+docker create -p 80:80 -e BITCOIN_NODE_HOST=192.168.1.102 -e BITCOIN_NODE_USER=foo -e BITCOIN_NODE_PASS=bar --name mempool mempool/mempool:v1.0
+docker start mempool
+docker logs mempool
+```
 
-<a id="one-click-installation"></a>
-## One-Click Installation
+You should see mempool starting up, which takes over an hour (needs 8 blocks). When it's ready, visit http://127.0.0.1/ to see your mempool.
 
-Mempool can be conveniently installed on the following full-node distros: 
-- [Umbrel](https://github.com/getumbrel/umbrel)
-- [RaspiBlitz](https://github.com/rootzoll/raspiblitz)
-- [RoninDojo](https://code.samourai.io/ronindojo/RoninDojo)
-- [myNode](https://github.com/mynodebtc/mynode)
-- [Start9](https://github.com/Start9Labs/embassy-os)
+# Mempool V1 not using Docker (advanced)
 
-**We highly recommend you deploy your own Mempool instance this way.** No matter which option you pick, you'll be able to get your own fully-sovereign instance of Mempool up quickly without needing to fiddle with any settings.
+## Dependencies
 
-## Advanced Installation Methods
+* Bitcoin (full node required, no pruning, txindex=1)
+* NodeJS (official stable LTS)
+* MySQL or MariaDB (default config)
+* Nginx (use supplied nginx.conf)
 
-Mempool can be installed in other ways too, but we only recommend doing so if you're a developer, have experience managing servers, or otherwise know what you're doing.
+## Checking out release tag
+```bash
+  git clone https://github.com/mempool-space/mempool.space
+  cd mempool.space
+  git checkout v1.0.0 # put latest release tag here
+```
 
-- See the [`docker/`](./docker/) directory for instructions on deploying Mempool with Docker.
-- See the [`backend/`](./backend/) and [`frontend/`](./frontend/) directories for manual install instructions oriented for developers.
-- See the [`production/`](./production/) directory for guidance on setting up a more serious Mempool instance designed for high performance at scale.
+## Bitcoin Core (bitcoind)
+
+Enable RPC and txindex in bitcoin.conf
+
+```bash
+  rpcuser=mempool
+  rpcpassword=71b61986da5b03a5694d7c7d5165ece5
+  txindex=1
+```
+
+## NodeJS
+
+Install dependencies and build code:
+
+```bash
+  # Install TypeScript Globally
+  npm install -g typescript
+
+  # Frontend
+  cd frontend
+  npm install
+  npm run build
+
+  # Backend
+  cd ../backend/
+  npm install
+  npm run build
+```
+
+## Mempool Configuration
+In the `backend` folder, make a copy of the sample config and modify it to fit your settings.
+
+```bash
+  cp mempool-config.sample.json mempool-config.json
+```
+
+Edit `mempool-config.json` to add your Bitcoin Core node RPC credentials:
+```bash
+  "BITCOIN_NODE_HOST": "192.168.1.5",
+  "BITCOIN_NODE_PORT": 8332,
+  "BITCOIN_NODE_USER": "mempool",
+  "BITCOIN_NODE_PASS": "71b61986da5b03a5694d7c7d5165ece5",
+```
+
+## MySQL
+
+Install MariaDB:
+
+```bash
+  # Linux
+  apt-get install mariadb-server mariadb-client
+
+  # macOS
+  brew install mariadb
+  brew services start mariadb
+```
+
+Create database and grant privileges:
+```bash
+  MariaDB [(none)]> drop database mempool;
+  Query OK, 0 rows affected (0.00 sec)
+
+  MariaDB [(none)]> create database mempool;
+  Query OK, 1 row affected (0.00 sec)
+
+  MariaDB [(none)]> grant all privileges on mempool.* to 'mempool' identified by 'mempool';
+  Query OK, 0 rows affected (0.00 sec)
+```
+
+From the root folder, initialize database structure:
+
+```bash
+  mysql -u mempool -p mempool < mariadb-structure.sql
+```
+
+## Running (Backend)
+
+Create an initial empty cache and start the app:
+
+```bash
+  touch cache.json
+  npm run start # node dist/index.js
+```
+
+After starting you should see:
+
+```bash
+  Server started on port 8999 :)
+  New block found (#586498)! 0 of 1986 found in mempool. 1985 not found.
+  New block found (#586499)! 0 of 1094 found in mempool. 1093 not found.
+  New block found (#586500)! 0 of 2735 found in mempool. 2734 not found.
+  New block found (#586501)! 0 of 2675 found in mempool. 2674 not found.
+  New block found (#586502)! 0 of 975 found in mempool. 974 not found.
+  New block found (#586503)! 0 of 2130 found in mempool. 2129 not found.
+  New block found (#586504)! 0 of 2770 found in mempool. 2769 not found.
+  New block found (#586505)! 0 of 2759 found in mempool. 2758 not found.
+  Updating mempool
+  Calculated fee for transaction 1 / 3257
+  Calculated fee for transaction 2 / 3257
+  Calculated fee for transaction 3 / 3257
+  Calculated fee for transaction 4 / 3257
+  Calculated fee for transaction 5 / 3257
+  Calculated fee for transaction 6 / 3257
+  Calculated fee for transaction 7 / 3257
+  Calculated fee for transaction 8 / 3257
+  Calculated fee for transaction 9 / 3257
+```
+You need to wait for at least *8 blocks to be mined*, so please wait ~80 minutes.
+The backend also needs to index transactions, calculate fees, etc.
+When it's ready you will see output like this:
+
+```bash
+  Mempool updated in 0.189 seconds
+  Updating mempool
+  Mempool updated in 0.096 seconds
+  Updating mempool
+  Mempool updated in 0.099 seconds
+  Updating mempool
+  Calculated fee for transaction 1 / 10
+  Calculated fee for transaction 2 / 10
+  Calculated fee for transaction 3 / 10
+  Calculated fee for transaction 4 / 10
+  Calculated fee for transaction 5 / 10
+  Calculated fee for transaction 6 / 10
+  Calculated fee for transaction 7 / 10
+  Calculated fee for transaction 8 / 10
+  Calculated fee for transaction 9 / 10
+  Calculated fee for transaction 10 / 10
+  Mempool updated in 0.243 seconds
+  Updating mempool
+```
+
+## nginx + CertBot (LetsEncrypt)
+Setup nginx using the supplied nginx.conf
+
+```bash
+  # install nginx and certbot
+  apt-get install -y nginx python-certbot-nginx
+
+  # replace example.com with your domain name
+  certbot --nginx -d example.com
+
+  # install the mempool configuration for nginx
+  cp nginx.conf /etc/nginx/nginx.conf
+
+  # edit the installed nginx.conf, and replace all
+  # instances of example.com with your domain name
+```
+Make sure you can access https://<your-domain-name>/ in browser before proceeding
+
+
+## Running (Frontend)
+
+Build the frontend static HTML/CSS/JS, rsync the output into nginx folder:
+
+```bash
+  cd frontend/
+  npm run build
+  sudo rsync -av --delete dist/mempool/ /var/www/html/
+```
+
+## Try It Out
+
+If everything went okay you should see the beautiful mempool :grin:
+
+If you get stuck on "loading blocks", this means the websocket can't connect.
+Check your nginx proxy setup, firewalls, etc. and open an issue if you need help.

backend/.editorconfig

@@ -1,17 +0,0 @@
-# Editor configuration, see https://editorconfig.org
-root = true
-
-[*]
-charset = utf-8
-indent_style = space
-indent_size = 2
-insert_final_newline = true
-trim_trailing_whitespace = true
-
-[*.ts]
-quote_type = single
-
-[*.md]
-max_line_length = off
-trim_trailing_whitespace = false
-

backend/.eslintignore

@@ -1,2 +0,0 @@
-node_modules
-dist

backend/.eslintrc

@@ -1,37 +0,0 @@
-{
-  "root": true,
-  "parser": "@typescript-eslint/parser",
-  "plugins": [
-    "@typescript-eslint"
-  ],
-  "extends": [
-    "eslint:recommended",
-    "plugin:@typescript-eslint/eslint-recommended",
-    "plugin:@typescript-eslint/recommended",
-    "prettier"
-  ],
-  "rules": {
-    "@typescript-eslint/ban-ts-comment": 1,
-    "@typescript-eslint/ban-types": 1,
-    "@typescript-eslint/no-empty-function": 1,
-    "@typescript-eslint/no-explicit-any": 1,
-    "@typescript-eslint/no-inferrable-types": 0,
-    "@typescript-eslint/no-namespace": 1,
-    "@typescript-eslint/no-this-alias": 1,
-    "@typescript-eslint/no-var-requires": 1,
-    "@typescript-eslint/explicit-function-return-type": 1,
-    "no-console": 1,
-    "no-constant-condition": 1,
-    "no-dupe-else-if": 1,
-    "no-empty": 1,
-    "no-prototype-builtins": 1,
-    "no-self-assign": 1,
-    "no-useless-catch": 1,
-    "no-var": 1,
-    "prefer-const": 1,
-    "prefer-rest-params": 1,
-    "quotes": [1, "single", { "allowTemplateLiterals": true }],
-    "semi": 1,
-    "eqeqeq": 1
-  }
-}

backend/.gitignore

@@ -1,11 +1,7 @@
 # See http://help.github.com/ignore-files/ for more about ignoring files.
 
-# production config and external assets
-!mempool-config.template.json
-!mempool-config.sample.json
+# production config
 mempool-config.json
-pools.json
-icons.json
 
 # compiled output
 /dist
@@ -45,3 +41,5 @@ testem.log
 #System Files
 .DS_Store
 Thumbs.db
+
+cache.json

backend/.prettierignore

@@ -1,2 +0,0 @@
-node_modules
-package-lock.json

backend/.prettierrc

@@ -1,6 +0,0 @@
-{
-  "endOfLine": "lf",
-  "printWidth": 80,
-  "tabWidth": 2,
-  "trailingComma": "es5"
-}

backend/.vscode/settings.json

@@ -1,4 +0,0 @@
-{
-  "editor.tabSize": 2,
-  "typescript.tsdk": "../backend/node_modules/typescript/lib"
-}

backend/README.md

@@ -1,254 +0,0 @@
-# Mempool Backend
-
-These instructions are mostly intended for developers. 
-
-If you choose to use these instructions for a production setup, be aware that you will still probably need to do additional configuration for your specific OS, environment, use-case, etc. We do our best here to provide a good starting point, but only proceed if you know what you're doing. Mempool does not provide support for custom setups.
-
-See other ways to set up Mempool on [the main README](/../../#installation-methods).
-
-Jump to a section in this doc:
-- [Set Up the Backend](#setup)
-- [Development Tips](#development-tips)
-
-## Setup
-
-### 1. Clone Mempool Repository
-
-Get the latest Mempool code:
-
-```
-git clone https://github.com/mempool/mempool
-cd mempool
-```
-
-Check out the latest release:
-
-```
-latestrelease=$(curl -s https://api.github.com/repos/mempool/mempool/releases/latest|grep tag_name|head -1|cut -d '"' -f4)
-git checkout $latestrelease
-```
-
-### 2. Configure Bitcoin Core
-
-Turn on `txindex`, enable RPC, and set RPC credentials in `bitcoin.conf`:
-
-```
-txindex=1
-server=1
-rpcuser=mempool
-rpcpassword=mempool
-```
-
-### 3. Configure Electrum Server
-
-[Pick an Electrum Server implementation](https://mempool.space/docs/faq#address-lookup-issues), configure it, and make sure it's synced.
-
-**This step is optional.** You can run Mempool without configuring an Electrum Server for it, but address lookups will be disabled.
-
-### 4. Configure MariaDB
-
-_Mempool needs MariaDB v10.5 or later. If you already have MySQL installed, make sure to migrate any existing databases **before** installing MariaDB._
-
-Get MariaDB from your operating system's package manager:
-
-```
-# Debian, Ubuntu, etc.
-apt-get install mariadb-server mariadb-client
-
-# macOS
-brew install mariadb
-mysql.server start
-```
-
-Create a database and grant privileges:
-
-```
-MariaDB [(none)]> drop database mempool;
-Query OK, 0 rows affected (0.00 sec)
-
-MariaDB [(none)]> create database mempool;
-Query OK, 1 row affected (0.00 sec)
-
-MariaDB [(none)]> grant all privileges on mempool.* to 'mempool'@'%' identified by 'mempool';
-Query OK, 0 rows affected (0.00 sec)
-```
-
-### 5. Prepare Mempool Backend
-
-#### Build
-
-_Make sure to use Node.js 16.10 and npm 7._
-
-Install dependencies with `npm` and build the backend:
-
-```
-cd backend
-npm install
-npm run build
-```
-
-#### Configure
-
-In the backend folder, make a copy of the sample config file:
-
-```
-cp mempool-config.sample.json mempool-config.json
-```
-
-Edit `mempool-config.json` as needed. 
-
-In particular, make sure:
-- the correct Bitcoin Core RPC credentials are specified in `CORE_RPC`
-- the correct `BACKEND` is specified in `MEMPOOL`:
-  - "electrum" if you're using [romanz/electrs](https://github.com/romanz/electrs) or [cculianu/Fulcrum](https://github.com/cculianu/Fulcrum)
-  - "esplora" if you're using [Blockstream/electrs](https://github.com/Blockstream/electrs)
-  - "none" if you're not using any Electrum Server
-
-### 6. Run Mempool Backend
-
-Run the Mempool backend:
-
-```
-npm run start
-
-```
-You can also set env var `MEMPOOL_CONFIG_FILE` to specify a custom config file location:
-```
-MEMPOOL_CONFIG_FILE=/path/to/mempool-config.json npm run start
-```
-
-When it's running, you should see output like this:
-
-```
-Mempool updated in 0.189 seconds
-Updating mempool
-Mempool updated in 0.096 seconds
-Updating mempool
-Mempool updated in 0.099 seconds
-Updating mempool
-Calculated fee for transaction 1 / 10
-Calculated fee for transaction 2 / 10
-Calculated fee for transaction 3 / 10
-Calculated fee for transaction 4 / 10
-Calculated fee for transaction 5 / 10
-Calculated fee for transaction 6 / 10
-Calculated fee for transaction 7 / 10
-Calculated fee for transaction 8 / 10
-Calculated fee for transaction 9 / 10
-Calculated fee for transaction 10 / 10
-Mempool updated in 0.243 seconds
-Updating mempool
-```
-
-### 7. Set Up Mempool Frontend
-With the backend configured and running, proceed to set up the [Mempool frontend](../frontend#manual-setup).
-
-## Development Tips
-
-### Set Up Backend Watchers
-
-The Mempool backend is static. TypeScript scripts are compiled into the `dist` folder and served through a Node.js web server. 
-
-As a result, for development purposes, you may find it helpful to set up backend watchers to avoid the manual shutdown/recompile/restart command-line cycle.
-
-First, install `nodemon` and `ts-node`:
-
-```
-npm install -g ts-node nodemon
-```
-
-Then, run the watcher:
-
-```
-nodemon src/index.ts --ignore cache/
-```
-
-`nodemon` should be in npm's global binary folder. If needed, you can determine where that is with `npm -g bin`.
-
-### Useful Regtest Commands
-
-Helpful link: https://gist.github.com/System-Glitch/cb4e87bf1ae3fec9925725bb3ebe223a
-
-Run bitcoind on regtest:
-   ```
-   bitcoind -regtest
-   ```
-
-Create a new wallet, if needed:
-   ```
-   bitcoin-cli -regtest createwallet test
-   ```
-
-Load wallet (this command may take a while if you have lot of UTXOs):
-   ```
-   bitcoin-cli -regtest loadwallet test
-   ```
-
-Get a new address:
-   ```
-   address=$(bitcoin-cli -regtest getnewaddress)
-   ```
-
-Mine blocks to the previously generated address. You need at least 101 blocks before you can spend. This will take some time to execute (~1 min):
-   ```
-   bitcoin-cli -regtest generatetoaddress 101 $address
-   ```
-
-Send 0.1 BTC at 5 sat/vB to another address:
-   ```
-   bitcoin-cli -named -regtest sendtoaddress address=$(bitcoin-cli -regtest getnewaddress) amount=0.1 fee_rate=5
-   ```
-
-See more example of `sendtoaddress`:
-   ```
-   bitcoin-cli sendtoaddress # will print the help
-   ```
-
-Mini script to generate random network activity (random TX count with random tx fee-rate). It's slow so don't expect to use this to test mempool spam, except if you let it run for a long time, or maybe with multiple regtest nodes connected to each other.
-   ```
-   #!/bin/bash
-   address=$(bitcoin-cli -regtest getnewaddress)
-   bitcoin-cli -regtest generatetoaddress 101 $address
-   for i in {1..1000000}
-   do
-      for y in $(seq 1 "$(jot -r 1 1 1000)")
-      do
-         bitcoin-cli -regtest -named sendtoaddress address=$address amount=0.01 fee_rate=$(jot -r 1 1 100)
-      done
-      bitcoin-cli -regtest generatetoaddress 1 $address
-      sleep 5
-   done
-   ```
-
-Generate block at regular interval (every 10 seconds in this example):
-   ```
-   watch -n 10 "bitcoin-cli -regtest generatetoaddress 1 $address"
-   ```
-
-### Mining pools update
-
-By default, mining pools will be not automatically updated regularly (`config.MEMPOOL.AUTOMATIC_BLOCK_REINDEXING` is set to `false`). 
-
-To manually update your mining pools, you can use the `--update-pools` command line flag when you run the nodejs backend. For example `npm run start --update-pools`. This will trigger the mining pools update and automatically re-index appropriate blocks.
-
-You can enabled the automatic mining pools update by settings `config.MEMPOOL.AUTOMATIC_BLOCK_REINDEXING` to `true` in your `mempool-config.json`.
-
-When a `coinbase tag` or `coinbase address` change is detected, all blocks tagged to the `unknown` mining pools (starting from height 130635) will be deleted from the `blocks` table. Additionaly, all blocks which were tagged to the pool which has been updated will also be deleted from the `blocks` table. Of course, those blocks will be automatically reindexed.
-
-### Re-index tables
-
-You can manually force the nodejs backend to drop all data from a specified set of tables for future re-index. This is mostly useful for the mining dashboard and the lightning explorer.
-
-Use the `--reindex` command to specify a list of comma separated table which will be truncated at start. Note that a 5 seconds delay will be observed before truncating tables in order to give you a chance to cancel (CTRL+C) in case of misuse of the command.
-
-Usage:
-```
-npm run start --reindex=blocks,hashrates
-```
-Example output:
-```
-Feb 13 14:55:27 [63246] WARN: <lightning> Indexed data for "hashrates" tables will be erased in 5 seconds (using '--reindex')
-Feb 13 14:55:32 [63246] NOTICE: <lightning> Table hashrates has been truncated
-```
-
-Reference: https://github.com/mempool/mempool/pull/1269

backend/cache/.gitignore

@@ -1 +0,0 @@
-*.json

backend/jest.config.ts

@@ -1,20 +0,0 @@
-import type { Config } from "@jest/types"
-
-const config: Config.InitialOptions = {
-  preset: "ts-jest",
-  testEnvironment: "node",
-  verbose: true,
-  automock: false,
-  collectCoverage: true,
-  collectCoverageFrom: ["./src/**/**.ts"],
-  coverageProvider: "babel",
-  coverageThreshold: {
-    global: {
-      lines: 1
-    }
-  },
-  setupFiles: [
-    "./testSetup.ts",
-  ],
-}
-export default config;

backend/mempool-config.sample.json

@@ -1,119 +1,25 @@
 {
-  "MEMPOOL": {
-    "NETWORK": "mainnet",
-    "BACKEND": "electrum",
-    "ENABLED": true,
-    "HTTP_PORT": 8999,
-    "SPAWN_CLUSTER_PROCS": 0,
-    "API_URL_PREFIX": "/api/v1/",
-    "POLL_RATE_MS": 2000,
-    "CACHE_DIR": "./cache",
-    "CLEAR_PROTECTION_MINUTES": 20,
-    "RECOMMENDED_FEE_PERCENTILE": 50,
-    "BLOCK_WEIGHT_UNITS": 4000000,
-    "INITIAL_BLOCKS_AMOUNT": 8,
-    "MEMPOOL_BLOCKS_AMOUNT": 8,
-    "INDEXING_BLOCKS_AMOUNT": 11000,
-    "BLOCKS_SUMMARIES_INDEXING": false,
-    "USE_SECOND_NODE_FOR_MINFEE": false,
-    "EXTERNAL_ASSETS": [],
-    "EXTERNAL_MAX_RETRY": 1,
-    "EXTERNAL_RETRY_INTERVAL": 0,
-    "USER_AGENT": "mempool",
-    "STDOUT_LOG_MIN_PRIORITY": "debug",
-    "AUTOMATIC_BLOCK_REINDEXING": false,
-    "POOLS_JSON_URL": "https://raw.githubusercontent.com/mempool/mining-pools/master/pools-v2.json",
-    "POOLS_JSON_TREE_URL": "https://api.github.com/repos/mempool/mining-pools/git/trees/master",
-    "AUDIT": false,
-    "ADVANCED_GBT_AUDIT": false,
-    "ADVANCED_GBT_MEMPOOL": false,
-    "CPFP_INDEXING": false
-  },
-  "CORE_RPC": {
-    "HOST": "127.0.0.1",
-    "PORT": 8332,
-    "USERNAME": "mempool",
-    "PASSWORD": "mempool"
-  },
-  "ELECTRUM": {
-    "HOST": "127.0.0.1",
-    "PORT": 50002,
-    "TLS_ENABLED": true
-  },
-  "ESPLORA": {
-    "REST_API_URL": "http://127.0.0.1:3000"
-  },
-  "SECOND_CORE_RPC": {
-    "HOST": "127.0.0.1",
-    "PORT": 8332,
-    "USERNAME": "mempool",
-    "PASSWORD": "mempool"
-  },
-  "DATABASE": {
-    "ENABLED": true,
-    "HOST": "127.0.0.1",
-    "PORT": 3306,
-    "SOCKET": "/var/run/mysql/mysql.sock",
-    "DATABASE": "mempool",
-    "USERNAME": "mempool",
-    "PASSWORD": "mempool"
-  },
-  "SYSLOG": {
-    "ENABLED": true,
-    "HOST": "127.0.0.1",
-    "PORT": 514,
-    "MIN_PRIORITY": "info",
-    "FACILITY": "local7"
-  },
-  "STATISTICS": {
-    "ENABLED": true,
-    "TX_PER_SECOND_SAMPLE_PERIOD": 150
-  },
-  "MAXMIND": {
-    "ENABLED": false,
-    "GEOLITE2_CITY": "/usr/local/share/GeoIP/GeoLite2-City.mmdb",
-    "GEOLITE2_ASN": "/usr/local/share/GeoIP/GeoLite2-ASN.mmdb",
-    "GEOIP2_ISP": "/usr/local/share/GeoIP/GeoIP2-ISP.mmdb"
-  },
-  "BISQ": {
-    "ENABLED": false,
-    "DATA_PATH": "/bisq/statsnode-data/btc_mainnet/db"
-  },
-  "LIGHTNING": {
-    "ENABLED": false,
-    "BACKEND": "lnd",
-    "STATS_REFRESH_INTERVAL": 600,
-    "GRAPH_REFRESH_INTERVAL": 600,
-    "LOGGER_UPDATE_INTERVAL": 30,
-    "FORENSICS_INTERVAL": 43200,
-    "FORENSICS_RATE_LIMIT": 20
-  },
-  "LND": {
-    "TLS_CERT_PATH": "tls.cert",
-    "MACAROON_PATH": "readonly.macaroon",
-    "REST_API_URL": "https://localhost:8080"
-  },
-  "CLIGHTNING": {
-    "SOCKET": "lightning-rpc"
-  },
-  "SOCKS5PROXY": {
-    "ENABLED": false,
-    "USE_ONION": true,
-    "HOST": "127.0.0.1",
-    "PORT": 9050,
-    "USERNAME": "",
-    "PASSWORD": ""
-  },
-  "PRICE_DATA_SERVER": {
-    "TOR_URL": "http://wizpriceje6q5tdrxkyiazsgu7irquiqjy2dptezqhrtu7l2qelqktid.onion/getAllMarketPrices",
-    "CLEARNET_URL": "https://price.bisq.wiz.biz/getAllMarketPrices"
-  },
-  "EXTERNAL_DATA_SERVER": {
-    "MEMPOOL_API": "https://mempool.space/api/v1",
-    "MEMPOOL_ONION": "http://mempoolhqx4isw62xs7abwphsq7ldayuidyx2v2oethdhhj6mlo2r6ad.onion/api/v1",
-    "LIQUID_API": "https://liquid.network/api/v1",
-    "LIQUID_ONION": "http://liquidmom47f6s3m53ebfxn47p76a6tlnxib3wp6deux7wuzotdr6cyd.onion/api/v1",
-    "BISQ_URL": "https://bisq.markets/api",
-    "BISQ_ONION": "http://bisqmktse2cabavbr2xjq7xw3h6g5ottemo5rolfcwt6aly6tp5fdryd.onion/api"
-  }
+  "ENV": "dev",
+  "DB_HOST": "localhost",
+  "DB_PORT": 3306,
+  "DB_USER": "mempool",
+  "DB_PASSWORD": "mempool",
+  "DB_DATABASE": "mempool",
+  "HTTP_PORT": 3000,
+  "API_ENDPOINT": "/api/v1/",
+  "CHAT_SSL_ENABLED": false,
+  "CHAT_SSL_PRIVKEY": "",
+  "CHAT_SSL_CERT": "",
+  "CHAT_SSL_CHAIN": "",
+  "MEMPOOL_REFRESH_RATE_MS": 500,
+  "INITIAL_BLOCK_AMOUNT": 8,
+  "DEFAULT_PROJECTED_BLOCKS_AMOUNT": 3,
+  "KEEP_BLOCK_AMOUNT": 24,
+  "BITCOIN_NODE_HOST": "localhost",
+  "BITCOIN_NODE_PORT": 8332,
+  "BITCOIN_NODE_USER": "",
+  "BITCOIN_NODE_PASS": "",
+  "BACKEND_API": "bitcoind",
+  "ELECTRS_API_URL": "https://mempool.space/api",
+  "TX_PER_SECOND_SPAN_SECONDS": 150
 }

backend/package.json

@@ -1,68 +1,31 @@
 {
   "name": "mempool-backend",
-  "version": "2.5.0-dev",
-  "description": "Bitcoin mempool visualizer and blockchain explorer backend",
-  "license": "GNU Affero General Public License v3.0",
-  "homepage": "https://mempool.space",
-  "repository": {
-    "type": "git",
-    "url": "git+https://github.com/mempool/mempool"
-  },
-  "bugs": {
-    "url": "https://github.com/mempool/mempool/issues"
-  },
-  "keywords": [
-    "bitcoin",
-    "mempool",
-    "blockchain",
-    "explorer",
-    "liquid",
-    "lightning"
-  ],
+  "version": "1.0.0",
+  "description": "Bitcoin Mempool Visualizer",
   "main": "index.ts",
   "scripts": {
-    "tsc": "./node_modules/typescript/bin/tsc -p tsconfig.build.json",
-    "build": "npm run tsc && npm run create-resources",
-    "create-resources": "cp ./src/tasks/price-feeds/mtgox-weekly.json ./dist/tasks && node dist/api/fetch-version.js",
-    "package": "npm run build && rm -rf package && mv dist package && mv node_modules package && npm run package-rm-build-deps",
-    "package-rm-build-deps": "(cd package/node_modules; rm -r typescript @typescript-eslint)",
-    "start": "node --max-old-space-size=2048 dist/index.js",
-    "start-production": "node --max-old-space-size=16384 dist/index.js",
-    "test": "./node_modules/.bin/jest --coverage",
-    "lint": "./node_modules/.bin/eslint . --ext .ts",
-    "lint:fix": "./node_modules/.bin/eslint . --ext .ts --fix",
-    "prettier": "./node_modules/.bin/prettier --write \"src/**/*.{js,ts}\""
+    "build": "tsc",
+    "start": "npm run build && node dist/index.js"
   },
+  "author": {
+    "name": "Simon Lindh",
+    "url": "https://github.com/mempool-space/mempool.space"
+  },
+  "license": "MIT",
   "dependencies": {
-    "@babel/core": "^7.20.12",
-    "@mempool/electrum-client": "^1.1.7",
-    "@types/node": "^16.18.11",
-    "axios": "~0.27.2",
-    "bitcoinjs-lib": "~6.1.0",
-    "crypto-js": "~4.1.1",
-    "express": "~4.18.2",
-    "maxmind": "~4.3.8",
-    "mysql2": "~2.3.3",
-    "node-worker-threads-pool": "~1.5.1",
-    "socks-proxy-agent": "~7.0.0",
-    "typescript": "~4.7.4",
-    "ws": "~8.11.0"
+    "bitcoin": "^3.0.1",
+    "compression": "^1.7.3",
+    "express": "^4.16.3",
+    "mysql2": "^1.6.1",
+    "request": "^2.88.0",
+    "ws": "^6.0.0"
   },
   "devDependencies": {
-    "@babel/core": "^7.20.7",
-    "@babel/code-frame": "^7.18.6",
-    "@types/compression": "^1.7.2",
-    "@types/crypto-js": "^4.1.1",
-    "@types/express": "^4.17.15",
-    "@types/jest": "^29.2.5",
-    "@types/ws": "~8.5.4",
-    "@typescript-eslint/eslint-plugin": "^5.48.1",
-    "@typescript-eslint/parser": "^5.48.1",
-    "eslint": "^8.31.0",
-    "eslint-config-prettier": "^8.5.0",
-    "jest": "^29.3.1",
-    "prettier": "^2.8.2",
-    "ts-jest": "^29.0.3",
-    "ts-node": "^10.9.1"
+    "@types/express": "^4.16.0",
+    "@types/mysql2": "github:types/mysql2",
+    "@types/request": "^2.48.2",
+    "@types/ws": "^6.0.1",
+    "tslint": "^5.11.0",
+    "typescript": "^3.1.1"
   }
 }

backend/src/__fixtures__/mempool-config.template.json

@@ -1,115 +0,0 @@
-{
-  "MEMPOOL": {
-    "ENABLED": true,
-    "NETWORK": "__MEMPOOL_NETWORK__",
-    "BACKEND": "__MEMPOOL_BACKEND__",
-    "BLOCKS_SUMMARIES_INDEXING": true,
-    "HTTP_PORT": 1,
-    "SPAWN_CLUSTER_PROCS": 2,
-    "API_URL_PREFIX": "__MEMPOOL_API_URL_PREFIX__",
-    "AUTOMATIC_BLOCK_REINDEXING": false,
-    "POLL_RATE_MS": 3,
-    "CACHE_DIR": "__MEMPOOL_CACHE_DIR__",
-    "CLEAR_PROTECTION_MINUTES": 4,
-    "RECOMMENDED_FEE_PERCENTILE": 5,
-    "BLOCK_WEIGHT_UNITS": 6,
-    "INITIAL_BLOCKS_AMOUNT": 7,
-    "MEMPOOL_BLOCKS_AMOUNT": 8,
-    "USE_SECOND_NODE_FOR_MINFEE": 10,
-    "EXTERNAL_ASSETS": 11,
-    "EXTERNAL_MAX_RETRY": 12,
-    "EXTERNAL_RETRY_INTERVAL": 13,
-    "USER_AGENT": "__MEMPOOL_USER_AGENT__",
-    "STDOUT_LOG_MIN_PRIORITY": "__MEMPOOL_STDOUT_LOG_MIN_PRIORITY__",
-    "INDEXING_BLOCKS_AMOUNT": 14,
-    "POOLS_JSON_TREE_URL": "__POOLS_JSON_TREE_URL__",
-    "POOLS_JSON_URL": "__POOLS_JSON_URL__",
-    "AUDIT": "__MEMPOOL_AUDIT__",
-    "ADVANCED_GBT_AUDIT": "__MEMPOOL_ADVANCED_GBT_AUDIT__",
-    "ADVANCED_GBT_MEMPOOL": "__MEMPOOL_ADVANCED_GBT_MEMPOOL__",
-    "CPFP_INDEXING": "__MEMPOOL_CPFP_INDEXING__",
-    "MAX_BLOCKS_BULK_QUERY": "__MEMPOOL_MAX_BLOCKS_BULK_QUERY__"
-  },
-  "CORE_RPC": {
-    "HOST": "__CORE_RPC_HOST__",
-    "PORT": 15,
-    "USERNAME": "__CORE_RPC_USERNAME__",
-    "PASSWORD": "__CORE_RPC_PASSWORD__"
-  },
-  "ELECTRUM": {
-    "HOST": "__ELECTRUM_HOST__",
-    "PORT": 16,
-    "TLS_ENABLED": true
-  },
-  "ESPLORA": {
-    "REST_API_URL": "__ESPLORA_REST_API_URL__"
-  },
-  "SECOND_CORE_RPC": {
-    "HOST": "__SECOND_CORE_RPC_HOST__",
-    "PORT": 17,
-    "USERNAME": "__SECOND_CORE_RPC_USERNAME__",
-    "PASSWORD": "__SECOND_CORE_RPC_PASSWORD__"
-  },
-  "DATABASE": {
-    "ENABLED": false,
-    "HOST": "__DATABASE_HOST__",
-    "SOCKET": "__DATABASE_SOCKET__",
-    "PORT": 18,
-    "DATABASE": "__DATABASE_DATABASE__",
-    "USERNAME": "__DATABASE_USERNAME__",
-    "PASSWORD": "__DATABASE_PASSWORD__"
-  },
-  "SYSLOG": {
-    "ENABLED": false,
-    "HOST": "__SYSLOG_HOST__",
-    "PORT": 19,
-    "MIN_PRIORITY": "__SYSLOG_MIN_PRIORITY__",
-    "FACILITY": "__SYSLOG_FACILITY__"
-  },
-  "STATISTICS": {
-    "ENABLED": false,
-    "TX_PER_SECOND_SAMPLE_PERIOD": 20
-  },
-  "BISQ": {
-    "ENABLED": true,
-    "DATA_PATH": "__BISQ_DATA_PATH__"
-  },
-  "SOCKS5PROXY": {
-    "ENABLED": true,
-    "USE_ONION": true,
-    "HOST": "__SOCKS5PROXY_HOST__",
-    "PORT": "__SOCKS5PROXY_PORT__",
-    "USERNAME": "__SOCKS5PROXY_USERNAME__",
-    "PASSWORD": "__SOCKS5PROXY_PASSWORD__"
-  },
-  "PRICE_DATA_SERVER": {
-    "TOR_URL": "__PRICE_DATA_SERVER_TOR_URL__",
-    "CLEARNET_URL": "__PRICE_DATA_SERVER_CLEARNET_URL__"
-  },
-  "EXTERNAL_DATA_SERVER": {
-    "MEMPOOL_API": "__EXTERNAL_DATA_SERVER_MEMPOOL_API__",
-    "MEMPOOL_ONION": "__EXTERNAL_DATA_SERVER_MEMPOOL_ONION__",
-    "LIQUID_API": "__EXTERNAL_DATA_SERVER_LIQUID_API__",
-    "LIQUID_ONION": "__EXTERNAL_DATA_SERVER_LIQUID_ONION__",
-    "BISQ_URL": "__EXTERNAL_DATA_SERVER_BISQ_URL__",
-    "BISQ_ONION": "__EXTERNAL_DATA_SERVER_BISQ_ONION__"
-  },
-  "LIGHTNING": {
-    "ENABLED": "__LIGHTNING_ENABLED__",
-    "BACKEND": "__LIGHTNING_BACKEND__",
-    "TOPOLOGY_FOLDER": "__LIGHTNING_TOPOLOGY_FOLDER__",
-    "STATS_REFRESH_INTERVAL": 600,
-    "GRAPH_REFRESH_INTERVAL": 600,
-    "LOGGER_UPDATE_INTERVAL": 30,
-    "FORENSICS_INTERVAL": 43200,
-    "FORENSICS_RATE_LIMIT": "__FORENSICS_RATE_LIMIT__"
-  },
-  "LND": {
-    "TLS_CERT_PATH": "",
-    "MACAROON_PATH": "",
-    "REST_API_URL": "https://localhost:8080"
-  },
-  "CLIGHTNING": {
-    "SOCKET": "__CLIGHTNING_SOCKET__"
-  }
-}

backend/src/__tests__/api/difficulty-adjustment.test.ts

@@ -1,66 +0,0 @@
-import { calcDifficultyAdjustment, DifficultyAdjustment } from '../../api/difficulty-adjustment';
-
-describe('Mempool Difficulty Adjustment', () => {
-  test('should calculate Difficulty Adjustments properly', () => {
-    const dt = (dtString) => {
-      return Math.floor(new Date(dtString).getTime() / 1000);
-    };
-
-    const vectors = [
-      [ // Vector 1
-        [ // Inputs
-          dt('2022-08-18T11:07:00.000Z'), // Last DA time (in seconds)
-          dt('2022-08-19T14:03:53.000Z'), // Current time (now) (in seconds)
-          750134,                         // Current block height
-          0.6280047707459726,             // Previous retarget % (Passed through)
-          'mainnet',                      // Network (if testnet, next value is non-zero)
-          0,                              // If not testnet, not used
-        ],
-        { // Expected Result
-          progressPercent: 9.027777777777777,
-          difficultyChange: 12.562233927411782,
-          estimatedRetargetDate: 1661895424692,
-          remainingBlocks: 1834,
-          remainingTime: 977591692,
-          previousRetarget: 0.6280047707459726,
-          previousTime: 1660820820,
-          nextRetargetHeight: 751968,
-          timeAvg: 533038,
-          timeOffset: 0,
-          expectedBlocks: 161.68833333333333,
-        },
-      ],
-      [ // Vector 2 (testnet)
-        [ // Inputs
-          dt('2022-08-18T11:07:00.000Z'), // Last DA time (in seconds)
-          dt('2022-08-19T14:03:53.000Z'), // Current time (now) (in seconds)
-          750134,                         // Current block height
-          0.6280047707459726,             // Previous retarget % (Passed through)
-          'testnet',                      // Network
-          dt('2022-08-19T13:52:46.000Z'), // Latest block timestamp in seconds
-        ],
-        { // Expected Result is same other than timeOffset
-          progressPercent: 9.027777777777777,
-          difficultyChange: 12.562233927411782,
-          estimatedRetargetDate: 1661895424692,
-          remainingBlocks: 1834,
-          remainingTime: 977591692,
-          previousTime: 1660820820,
-          previousRetarget: 0.6280047707459726,
-          nextRetargetHeight: 751968,
-          timeAvg: 533038,
-          timeOffset: -667000, // 11 min 7 seconds since last block (testnet only)
-          // If we add time avg to abs(timeOffset) it makes exactly 1200000 ms, or 20 minutes
-          expectedBlocks: 161.68833333333333,
-        },
-      ],
-    ] as [[number, number, number, number, string, number], DifficultyAdjustment][];
-
-    for (const vector of vectors) {
-      const result = calcDifficultyAdjustment(...vector[0]);
-      // previousRetarget is passed through untouched
-      expect(result.previousRetarget).toStrictEqual(vector[0][3]);
-      expect(result).toStrictEqual(vector[1]);
-    }
-  });
-});

backend/src/__tests__/config.test.ts

@@ -1,151 +0,0 @@
-import * as fs from 'fs';
-
-describe('Mempool Backend Config', () => {
-  beforeEach(() => {
-    jest.resetAllMocks();
-    jest.resetModules();
-  });
-
-  test('should return defaults when no file is present', () => {
-    jest.isolateModules(() => {
-      jest.mock('../../mempool-config.json', () => ({}), { virtual: true });
-
-      const config = jest.requireActual('../config').default;
-
-      expect(config.MEMPOOL).toStrictEqual({
-        ENABLED: true,
-        NETWORK: 'mainnet',
-        BACKEND: 'none',
-        BLOCKS_SUMMARIES_INDEXING: false,
-        HTTP_PORT: 8999,
-        SPAWN_CLUSTER_PROCS: 0,
-        API_URL_PREFIX: '/api/v1/',
-        AUTOMATIC_BLOCK_REINDEXING: false,
-        POLL_RATE_MS: 2000,
-        CACHE_DIR: './cache',
-        CLEAR_PROTECTION_MINUTES: 20,
-        RECOMMENDED_FEE_PERCENTILE: 50,
-        BLOCK_WEIGHT_UNITS: 4000000,
-        INITIAL_BLOCKS_AMOUNT: 8,
-        MEMPOOL_BLOCKS_AMOUNT: 8,
-        INDEXING_BLOCKS_AMOUNT: 11000,
-        USE_SECOND_NODE_FOR_MINFEE: false,
-        EXTERNAL_ASSETS: [],
-        EXTERNAL_MAX_RETRY: 1,
-        EXTERNAL_RETRY_INTERVAL: 0,
-        USER_AGENT: 'mempool',
-        STDOUT_LOG_MIN_PRIORITY: 'debug',
-        POOLS_JSON_TREE_URL: 'https://api.github.com/repos/mempool/mining-pools/git/trees/master',
-        POOLS_JSON_URL: 'https://raw.githubusercontent.com/mempool/mining-pools/master/pools-v2.json',
-        AUDIT: false,
-        ADVANCED_GBT_AUDIT: false,
-        ADVANCED_GBT_MEMPOOL: false,
-        CPFP_INDEXING: false,
-        MAX_BLOCKS_BULK_QUERY: 0,
-      });
-
-      expect(config.ELECTRUM).toStrictEqual({ HOST: '127.0.0.1', PORT: 3306, TLS_ENABLED: true });
-
-      expect(config.ESPLORA).toStrictEqual({ REST_API_URL: 'http://127.0.0.1:3000' });
-
-      expect(config.CORE_RPC).toStrictEqual({
-        HOST: '127.0.0.1',
-        PORT: 8332,
-        USERNAME: 'mempool',
-        PASSWORD: 'mempool'
-      });
-
-      expect(config.SECOND_CORE_RPC).toStrictEqual({
-        HOST: '127.0.0.1',
-        PORT: 8332,
-        USERNAME: 'mempool',
-        PASSWORD: 'mempool'
-      });
-
-      expect(config.DATABASE).toStrictEqual({
-        ENABLED: true,
-        HOST: '127.0.0.1',
-        SOCKET: '',
-        PORT: 3306,
-        DATABASE: 'mempool',
-        USERNAME: 'mempool',
-        PASSWORD: 'mempool'
-      });
-
-      expect(config.SYSLOG).toStrictEqual({
-        ENABLED: true,
-        HOST: '127.0.0.1',
-        PORT: 514,
-        MIN_PRIORITY: 'info',
-        FACILITY: 'local7'
-      });
-
-      expect(config.STATISTICS).toStrictEqual({ ENABLED: true, TX_PER_SECOND_SAMPLE_PERIOD: 150 });
-
-      expect(config.BISQ).toStrictEqual({ ENABLED: false, DATA_PATH: '/bisq/statsnode-data/btc_mainnet/db' });
-
-      expect(config.SOCKS5PROXY).toStrictEqual({
-        ENABLED: false,
-        USE_ONION: true,
-        HOST: '127.0.0.1',
-        PORT: 9050,
-        USERNAME: '',
-        PASSWORD: ''
-      });
-
-      expect(config.PRICE_DATA_SERVER).toStrictEqual({
-        TOR_URL: 'http://wizpriceje6q5tdrxkyiazsgu7irquiqjy2dptezqhrtu7l2qelqktid.onion/getAllMarketPrices',
-        CLEARNET_URL: 'https://price.bisq.wiz.biz/getAllMarketPrices'
-      });
-
-      expect(config.EXTERNAL_DATA_SERVER).toStrictEqual({
-        MEMPOOL_API: 'https://mempool.space/api/v1',
-        MEMPOOL_ONION: 'http://mempoolhqx4isw62xs7abwphsq7ldayuidyx2v2oethdhhj6mlo2r6ad.onion/api/v1',
-        LIQUID_API: 'https://liquid.network/api/v1',
-        LIQUID_ONION: 'http://liquidmom47f6s3m53ebfxn47p76a6tlnxib3wp6deux7wuzotdr6cyd.onion/api/v1',
-        BISQ_URL: 'https://bisq.markets/api',
-        BISQ_ONION: 'http://bisqmktse2cabavbr2xjq7xw3h6g5ottemo5rolfcwt6aly6tp5fdryd.onion/api'
-      });
-
-      expect(config.MAXMIND).toStrictEqual({
-        ENABLED: true,
-        GEOLITE2_CITY: './backend/GeoIP/GeoLite2-City.mmdb',
-        GEOLITE2_ASN: './backend/GeoIP/GeoLite2-ASN.mmdb',
-        GEOIP2_ISP: ''
-      });
-    });
-  });
-
-  test('should override the default values with the passed values', () => {
-    jest.isolateModules(() => {
-      const fixture = JSON.parse(fs.readFileSync(`${__dirname}/../__fixtures__/mempool-config.template.json`, 'utf8'));
-      jest.mock('../../mempool-config.json', () => (fixture), { virtual: true });
-
-      const config = jest.requireActual('../config').default;
-
-      expect(config.MEMPOOL).toStrictEqual(fixture.MEMPOOL);
-
-      expect(config.ELECTRUM).toStrictEqual(fixture.ELECTRUM);
-
-      expect(config.ESPLORA).toStrictEqual(fixture.ESPLORA);
-
-      expect(config.CORE_RPC).toStrictEqual(fixture.CORE_RPC);
-
-      expect(config.SECOND_CORE_RPC).toStrictEqual(fixture.SECOND_CORE_RPC);
-
-      expect(config.DATABASE).toStrictEqual(fixture.DATABASE);
-
-      expect(config.SYSLOG).toStrictEqual(fixture.SYSLOG);
-
-      expect(config.STATISTICS).toStrictEqual(fixture.STATISTICS);
-
-      expect(config.BISQ).toStrictEqual(fixture.BISQ);
-
-      expect(config.SOCKS5PROXY).toStrictEqual(fixture.SOCKS5PROXY);
-
-      expect(config.PRICE_DATA_SERVER).toStrictEqual(fixture.PRICE_DATA_SERVER);
-
-      expect(config.EXTERNAL_DATA_SERVER).toStrictEqual(fixture.EXTERNAL_DATA_SERVER);
-    });
-  });
-});

backend/src/api/audit.ts

@@ -1,143 +0,0 @@
-import config from '../config';
-import { TransactionExtended, MempoolBlockWithTransactions } from '../mempool.interfaces';
-
-const PROPAGATION_MARGIN = 180; // in seconds, time since a transaction is first seen after which it is assumed to have propagated to all miners
-
-class Audit {
-  auditBlock(transactions: TransactionExtended[], projectedBlocks: MempoolBlockWithTransactions[], mempool: { [txId: string]: TransactionExtended })
-   : { censored: string[], added: string[], fresh: string[], score: number, similarity: number } {
-    if (!projectedBlocks?.[0]?.transactionIds || !mempool) {
-      return { censored: [], added: [], fresh: [], score: 0, similarity: 1 };
-    }
-
-    const matches: string[] = []; // present in both mined block and template
-    const added: string[] = []; // present in mined block, not in template
-    const fresh: string[] = []; // missing, but firstSeen within PROPAGATION_MARGIN
-    const isCensored = {}; // missing, without excuse
-    const isDisplaced = {};
-    let displacedWeight = 0;
-    let matchedWeight = 0;
-    let projectedWeight = 0;
-
-    const inBlock = {};
-    const inTemplate = {};
-
-    const now = Math.round((Date.now() / 1000));
-    for (const tx of transactions) {
-      inBlock[tx.txid] = tx;
-    }
-    // coinbase is always expected
-    if (transactions[0]) {
-      inTemplate[transactions[0].txid] = true;
-    }
-    // look for transactions that were expected in the template, but missing from the mined block
-    for (const txid of projectedBlocks[0].transactionIds) {
-      if (!inBlock[txid]) {
-        // tx is recent, may have reached the miner too late for inclusion
-        if (mempool[txid]?.firstSeen != null && (now - (mempool[txid]?.firstSeen || 0)) <= PROPAGATION_MARGIN) {
-          fresh.push(txid);
-        } else {
-          isCensored[txid] = true;
-        }
-        displacedWeight += mempool[txid].weight;
-      } else {
-        matchedWeight += mempool[txid].weight;
-      }
-      projectedWeight += mempool[txid].weight;
-      inTemplate[txid] = true;
-    }
-
-    displacedWeight += (4000 - transactions[0].weight);
-    projectedWeight += transactions[0].weight;
-    matchedWeight += transactions[0].weight;
-
-    // we can expect an honest miner to include 'displaced' transactions in place of recent arrivals and censored txs
-    // these displaced transactions should occupy the first N weight units of the next projected block
-    let displacedWeightRemaining = displacedWeight;
-    let index = 0;
-    let lastFeeRate = Infinity;
-    let failures = 0;
-    while (projectedBlocks[1] && index < projectedBlocks[1].transactionIds.length && failures < 500) {
-      const txid = projectedBlocks[1].transactionIds[index];
-      const fits = (mempool[txid].weight - displacedWeightRemaining) < 4000;
-      const feeMatches = mempool[txid].effectiveFeePerVsize >= lastFeeRate;
-      if (fits || feeMatches) {
-        isDisplaced[txid] = true;
-        if (fits) {
-          lastFeeRate = Math.min(lastFeeRate, mempool[txid].effectiveFeePerVsize);
-        }
-        if (mempool[txid].firstSeen == null || (now - (mempool[txid]?.firstSeen || 0)) > PROPAGATION_MARGIN) {
-          displacedWeightRemaining -= mempool[txid].weight;
-        }
-        failures = 0;
-      } else {
-        failures++;
-      }
-      index++;
-    }
-
-    // mark unexpected transactions in the mined block as 'added'
-    let overflowWeight = 0;
-    let totalWeight = 0;
-    for (const tx of transactions) {
-      if (inTemplate[tx.txid]) {
-        matches.push(tx.txid);
-      } else {
-        if (!isDisplaced[tx.txid]) {
-          added.push(tx.txid);
-        } else {
-        }
-        let blockIndex = -1;
-        let index = -1;
-        projectedBlocks.forEach((block, bi) => {
-          const i = block.transactionIds.indexOf(tx.txid);
-          if (i >= 0) {
-            blockIndex = bi;
-            index = i;
-          }
-        });
-        overflowWeight += tx.weight;
-      }
-      totalWeight += tx.weight;
-    }
-
-    // transactions missing from near the end of our template are probably not being censored
-    let overflowWeightRemaining = overflowWeight - (config.MEMPOOL.BLOCK_WEIGHT_UNITS - totalWeight);
-    let maxOverflowRate = 0;
-    let rateThreshold = 0;
-    index = projectedBlocks[0].transactionIds.length - 1;
-    while (index >= 0) {
-      const txid = projectedBlocks[0].transactionIds[index];
-      if (overflowWeightRemaining > 0) {
-        if (isCensored[txid]) {
-          delete isCensored[txid];
-        }
-        if (mempool[txid].effectiveFeePerVsize > maxOverflowRate) {
-          maxOverflowRate = mempool[txid].effectiveFeePerVsize;
-          rateThreshold = (Math.ceil(maxOverflowRate * 100) / 100) + 0.005;
-        }
-      } else if (mempool[txid].effectiveFeePerVsize <= rateThreshold) { // tolerance of 0.01 sat/vb + rounding
-        if (isCensored[txid]) {
-          delete isCensored[txid];
-        }
-      }
-      overflowWeightRemaining -= (mempool[txid]?.weight || 0);
-      index--;
-    }
-
-    const numCensored = Object.keys(isCensored).length;
-    const numMatches = matches.length - 1; // adjust for coinbase tx
-    const score = numMatches > 0 ? (numMatches / (numMatches + numCensored)) : 0;
-    const similarity = projectedWeight ? matchedWeight / projectedWeight : 1;
-
-    return {
-      censored: Object.keys(isCensored),
-      added,
-      fresh,
-      score,
-      similarity,
-    };
-  }
-}
-
-export default new Audit();

backend/src/api/backend-info.ts

@@ -1,40 +0,0 @@
-import fs from 'fs';
-import path from 'path';
-import os from 'os';
-import { IBackendInfo } from '../mempool.interfaces';
-import config from '../config';
-
-class BackendInfo {
-  private backendInfo: IBackendInfo;
-
-  constructor() {
-    // This file is created by ./fetch-version.ts during building
-    const versionFile = path.join(__dirname, 'version.json')
-    var versionInfo;
-    if (fs.existsSync(versionFile)) {
-      versionInfo = JSON.parse(fs.readFileSync(versionFile).toString());
-    } else {
-      // Use dummy values if `versionFile` doesn't exist (e.g., during testing)
-      versionInfo = {
-        version: '?',
-        gitCommit: '?'
-      };
-    }
-    this.backendInfo = {
-      hostname: os.hostname(),
-      version: versionInfo.version,
-      gitCommit: versionInfo.gitCommit,
-      lightning: config.LIGHTNING.ENABLED
-    };
-  }
-
-  public getBackendInfo(): IBackendInfo {
-    return this.backendInfo;
-  }
-
-  public getShortCommitHash() {
-    return this.backendInfo.gitCommit.slice(0, 7);
-  }
-}
-
-export default new BackendInfo();

backend/src/api/bisq/bisq.routes.ts

@@ -1,381 +0,0 @@
-import { Application, Request, Response } from 'express';
-import config from '../../config';
-import { RequiredSpec } from '../../mempool.interfaces';
-import bisq from './bisq';
-import { MarketsApiError } from './interfaces';
-import marketsApi from './markets-api';
-
-class BisqRoutes {
-  public initRoutes(app: Application) {
-    app
-      .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/stats', this.getBisqStats)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/tx/:txId', this.getBisqTransaction)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/block/:hash', this.getBisqBlock)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/blocks/tip/height', this.getBisqTip)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/blocks/:index/:length', this.getBisqBlocks)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/address/:address', this.getBisqAddress)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/txs/:index/:length', this.getBisqTransactions)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/markets/currencies', this.getBisqMarketCurrencies.bind(this))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/markets/depth', this.getBisqMarketDepth.bind(this))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/markets/hloc', this.getBisqMarketHloc.bind(this))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/markets/markets', this.getBisqMarketMarkets.bind(this))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/markets/offers', this.getBisqMarketOffers.bind(this))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/markets/ticker', this.getBisqMarketTicker.bind(this))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/markets/trades', this.getBisqMarketTrades.bind(this))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/markets/volumes', this.getBisqMarketVolumes.bind(this))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'bisq/markets/volumes/7d', this.getBisqMarketVolumes7d.bind(this))
-    ;
-  }
-
-
-  private getBisqStats(req: Request, res: Response) {
-    const result = bisq.getStats();
-    res.json(result);
-  }
-
-  private getBisqTip(req: Request, res: Response) {
-    const result = bisq.getLatestBlockHeight();
-    res.type('text/plain');
-    res.send(result.toString());
-  }
-
-  private getBisqTransaction(req: Request, res: Response) {
-    const result = bisq.getTransaction(req.params.txId);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(404).send('Bisq transaction not found');
-    }
-  }
-
-  private getBisqTransactions(req: Request, res: Response) {
-    const types: string[] = [];
-    req.query.types = req.query.types || [];
-    if (!Array.isArray(req.query.types)) {
-      res.status(500).send('Types is not an array');
-      return;
-    }
-
-    for (const _type in req.query.types) {
-      if (typeof req.query.types[_type] === 'string') {
-        types.push(req.query.types[_type].toString());
-      }
-    }
-
-    const index = parseInt(req.params.index, 10) || 0;
-    const length = parseInt(req.params.length, 10) > 100 ? 100 : parseInt(req.params.length, 10) || 25;
-    const [transactions, count] = bisq.getTransactions(index, length, types);
-    res.header('X-Total-Count', count.toString());
-    res.json(transactions);
-  }
-
-  private getBisqBlock(req: Request, res: Response) {
-    const result = bisq.getBlock(req.params.hash);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(404).send('Bisq block not found');
-    }
-  }
-
-  private getBisqBlocks(req: Request, res: Response) {
-    const index = parseInt(req.params.index, 10) || 0;
-    const length = parseInt(req.params.length, 10) > 100 ? 100 : parseInt(req.params.length, 10) || 25;
-    const [transactions, count] = bisq.getBlocks(index, length);
-    res.header('X-Total-Count', count.toString());
-    res.json(transactions);
-  }
-
-  private getBisqAddress(req: Request, res: Response) {
-    const result = bisq.getAddress(req.params.address.substr(1));
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(404).send('Bisq address not found');
-    }
-  }
-
-  private getBisqMarketCurrencies(req: Request, res: Response) {
-    const constraints: RequiredSpec = {
-      'type': {
-        required: false,
-        types: ['crypto', 'fiat', 'all']
-      },
-    };
-
-    const p = this.parseRequestParameters(req.query, constraints);
-    if (p.error) {
-      res.status(400).json(this.getBisqMarketErrorResponse(p.error));
-      return;
-    }
-
-    const result = marketsApi.getCurrencies(p.type);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(500).json(this.getBisqMarketErrorResponse('getBisqMarketCurrencies error'));
-    }
-  }
-
-  private getBisqMarketDepth(req: Request, res: Response) {
-    const constraints: RequiredSpec = {
-      'market': {
-        required: true,
-        types: ['@string']
-      },
-    };
-
-    const p = this.parseRequestParameters(req.query, constraints);
-    if (p.error) {
-      res.status(400).json(this.getBisqMarketErrorResponse(p.error));
-      return;
-    }
-
-    const result = marketsApi.getDepth(p.market);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(500).json(this.getBisqMarketErrorResponse('getBisqMarketDepth error'));
-    }
-  }
-
-  private getBisqMarketMarkets(req: Request, res: Response) {
-    const result = marketsApi.getMarkets();
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(500).json(this.getBisqMarketErrorResponse('getBisqMarketMarkets error'));
-    }
-  }
-
-  private getBisqMarketTrades(req: Request, res: Response) {
-    const constraints: RequiredSpec = {
-      'market': {
-        required: true,
-        types: ['@string']
-      },
-      'timestamp_from': {
-        required: false,
-        types: ['@number']
-      },
-      'timestamp_to': {
-        required: false,
-        types: ['@number']
-      },
-      'trade_id_to': {
-        required: false,
-        types: ['@string']
-      },
-      'trade_id_from': {
-        required: false,
-        types: ['@string']
-      },
-      'direction': {
-        required: false,
-        types: ['buy', 'sell']
-      },
-      'limit': {
-        required: false,
-        types: ['@number']
-      },
-      'sort': {
-        required: false,
-        types: ['asc', 'desc']
-      }
-    };
-
-    const p = this.parseRequestParameters(req.query, constraints);
-    if (p.error) {
-      res.status(400).json(this.getBisqMarketErrorResponse(p.error));
-      return;
-    }
-
-    const result = marketsApi.getTrades(p.market, p.timestamp_from,
-      p.timestamp_to, p.trade_id_from, p.trade_id_to, p.direction, p.limit, p.sort);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(500).json(this.getBisqMarketErrorResponse('getBisqMarketTrades error'));
-    }
-  }
-
-  private getBisqMarketOffers(req: Request, res: Response) {
-    const constraints: RequiredSpec = {
-      'market': {
-        required: true,
-        types: ['@string']
-      },
-      'direction': {
-        required: false,
-        types: ['buy', 'sell']
-      },
-    };
-
-    const p = this.parseRequestParameters(req.query, constraints);
-    if (p.error) {
-      res.status(400).json(this.getBisqMarketErrorResponse(p.error));
-      return;
-    }
-
-    const result = marketsApi.getOffers(p.market, p.direction);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(500).json(this.getBisqMarketErrorResponse('getBisqMarketOffers error'));
-    }
-  }
-
-  private getBisqMarketVolumes(req: Request, res: Response) {
-    const constraints: RequiredSpec = {
-      'market': {
-        required: false,
-        types: ['@string']
-      },
-      'interval': {
-        required: false,
-        types: ['minute', 'half_hour', 'hour', 'half_day', 'day', 'week', 'month', 'year', 'auto']
-      },
-      'timestamp_from': {
-        required: false,
-        types: ['@number']
-      },
-      'timestamp_to': {
-        required: false,
-        types: ['@number']
-      },
-      'milliseconds': {
-        required: false,
-        types: ['@boolean']
-      },
-      'timestamp': {
-        required: false,
-        types: ['no', 'yes']
-      },
-    };
-
-    const p = this.parseRequestParameters(req.query, constraints);
-    if (p.error) {
-      res.status(400).json(this.getBisqMarketErrorResponse(p.error));
-      return;
-    }
-
-    const result = marketsApi.getVolumes(p.market, p.timestamp_from, p.timestamp_to, p.interval, p.milliseconds, p.timestamp);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(500).json(this.getBisqMarketErrorResponse('getBisqMarketVolumes error'));
-    }
-  }
-
-  private getBisqMarketHloc(req: Request, res: Response) {
-    const constraints: RequiredSpec = {
-      'market': {
-        required: true,
-        types: ['@string']
-      },
-      'interval': {
-        required: false,
-        types: ['minute', 'half_hour', 'hour', 'half_day', 'day', 'week', 'month', 'year', 'auto']
-      },
-      'timestamp_from': {
-        required: false,
-        types: ['@number']
-      },
-      'timestamp_to': {
-        required: false,
-        types: ['@number']
-      },
-      'milliseconds': {
-        required: false,
-        types: ['@boolean']
-      },
-      'timestamp': {
-        required: false,
-        types: ['no', 'yes']
-      },
-    };
-
-    const p = this.parseRequestParameters(req.query, constraints);
-    if (p.error) {
-      res.status(400).json(this.getBisqMarketErrorResponse(p.error));
-      return;
-    }
-
-    const result = marketsApi.getHloc(p.market, p.interval, p.timestamp_from, p.timestamp_to, p.milliseconds, p.timestamp);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(500).json(this.getBisqMarketErrorResponse('getBisqMarketHloc error'));
-    }
-  }
-
-  private getBisqMarketTicker(req: Request, res: Response) {
-    const constraints: RequiredSpec = {
-      'market': {
-        required: false,
-        types: ['@string']
-      },
-    };
-
-    const p = this.parseRequestParameters(req.query, constraints);
-    if (p.error) {
-      res.status(400).json(this.getBisqMarketErrorResponse(p.error));
-      return;
-    }
-
-    const result = marketsApi.getTicker(p.market);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(500).json(this.getBisqMarketErrorResponse('getBisqMarketTicker error'));
-    }
-  }
-
-  private getBisqMarketVolumes7d(req: Request, res: Response) {
-    const result = marketsApi.getVolumesByTime(604800);
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(500).json(this.getBisqMarketErrorResponse('getBisqMarketVolumes7d error'));
-    }
-  }
-
-  private parseRequestParameters(requestParams: object, params: RequiredSpec): { [name: string]: any; } {
-    const final = {};
-    for (const i in params) {
-      if (params.hasOwnProperty(i)) {
-        if (params[i].required && requestParams[i] === undefined) {
-          return { error: i + ' parameter missing'};
-        }
-        if (typeof requestParams[i] === 'string') {
-          const str = (requestParams[i] || '').toString().toLowerCase();
-          if (params[i].types.indexOf('@number') > -1) {
-            const number = parseInt((str).toString(), 10);
-            final[i] = number;
-          } else if (params[i].types.indexOf('@string') > -1) {
-            final[i] = str;
-          } else if (params[i].types.indexOf('@boolean') > -1) {
-            final[i] = str === 'true' || str === 'yes';
-          } else if (params[i].types.indexOf(str) > -1) {
-            final[i] = str;
-          } else {
-            return { error: i + ' parameter invalid'};
-          }
-        } else if (typeof requestParams[i] === 'number') {
-          final[i] = requestParams[i];
-        }
-      }
-    }
-    return final;
-  }
-
-  private getBisqMarketErrorResponse(message: string): MarketsApiError {
-    return {
-      'success': 0,
-      'error': message
-    };
-  }
-
-}
-
-export default new BisqRoutes;

backend/src/api/bisq/bisq.ts

@@ -1,364 +0,0 @@
-import config from '../../config';
-import * as fs from 'fs';
-import axios, { AxiosResponse } from 'axios';
-import * as http from 'http';
-import * as https from 'https';
-import { SocksProxyAgent } from 'socks-proxy-agent';
-import { BisqBlocks, BisqBlock, BisqTransaction, BisqStats, BisqTrade } from './interfaces';
-import { Common } from '../common';
-import { BlockExtended } from '../../mempool.interfaces';
-import { StaticPool } from 'node-worker-threads-pool';
-import backendInfo from '../backend-info';
-import logger from '../../logger';
-
-class Bisq {
-  private static BLOCKS_JSON_FILE_PATH = config.BISQ.DATA_PATH + '/json/all/blocks.json';
-  private latestBlockHeight = 0;
-  private blocks: BisqBlock[] = [];
-  private allBlocks: BisqBlock[] = [];
-  private transactions: BisqTransaction[] = [];
-  private transactionIndex: { [txId: string]: BisqTransaction } = {};
-  private blockIndex: { [hash: string]: BisqBlock } = {};
-  private addressIndex: { [address: string]: BisqTransaction[] } = {};
-  private stats: BisqStats = {
-    minted: 0,
-    burnt: 0,
-    addresses: 0,
-    unspent_txos: 0,
-    spent_txos: 0,
-  };
-  private price: number = 0;
-  private priceUpdateCallbackFunction: ((price: number) => void) | undefined;
-  private topDirectoryWatcher: fs.FSWatcher | undefined;
-  private subdirectoryWatcher: fs.FSWatcher | undefined;
-  private jsonParsePool = new StaticPool({
-    size: 4,
-    task: (blob: string) => JSON.parse(blob),
-  });
-
-  constructor() {}
-
-  startBisqService(): void {
-    try {
-      this.checkForBisqDataFolder();
-    } catch (e) {
-      logger.info('Retrying to start bisq service in 3 minutes');
-      setTimeout(this.startBisqService.bind(this), 180000);
-      return;
-    }
-    this.loadBisqDumpFile();
-    setInterval(this.updatePrice.bind(this), 1000 * 60 * 60);
-    this.updatePrice();
-    this.startTopDirectoryWatcher();
-    this.startSubDirectoryWatcher();
-  }
-
-  handleNewBitcoinBlock(block: BlockExtended): void {
-    if (block.height - 10 > this.latestBlockHeight && this.latestBlockHeight !== 0) {
-      logger.warn(`Bitcoin block height (#${block.height}) has diverged from the latest Bisq block height (#${this.latestBlockHeight}). Restarting watchers...`);
-      this.startTopDirectoryWatcher();
-      this.startSubDirectoryWatcher();
-    }
-  }
-
-  getTransaction(txId: string): BisqTransaction | undefined {
-    return this.transactionIndex[txId];
-  }
-
-  getTransactions(start: number, length: number, types: string[]): [BisqTransaction[], number] {
-    let transactions = this.transactions;
-    if (types.length) {
-      transactions = transactions.filter((tx) => types.indexOf(tx.txType) > -1);
-    }
-    return [transactions.slice(start, length + start), transactions.length];
-  }
-
-  getBlock(hash: string): BisqBlock | undefined {
-    return this.blockIndex[hash];
-  }
-
-  getAddress(hash: string): BisqTransaction[] {
-    return this.addressIndex[hash];
-  }
-
-  getBlocks(start: number, length: number): [BisqBlock[], number] {
-    return [this.blocks.slice(start, length + start), this.blocks.length];
-  }
-
-  getStats(): BisqStats {
-    return this.stats;
-  }
-
-  setPriceCallbackFunction(fn: (price: number) => void) {
-    this.priceUpdateCallbackFunction = fn;
-  }
-
-  getLatestBlockHeight(): number {
-    return this.latestBlockHeight;
-  }
-
-  private checkForBisqDataFolder() {
-    if (!fs.existsSync(Bisq.BLOCKS_JSON_FILE_PATH)) {
-      logger.warn(Bisq.BLOCKS_JSON_FILE_PATH + ` doesn't exist. Make sure Bisq is running and the config is correct before starting the server.`);
-      throw new Error(`Cannot load BISQ ${Bisq.BLOCKS_JSON_FILE_PATH} file`);
-    }
-  }
-
-  private startTopDirectoryWatcher() {
-    if (this.topDirectoryWatcher) {
-      this.topDirectoryWatcher.close();
-    }
-    let fsWait: NodeJS.Timeout | null = null;
-    this.topDirectoryWatcher = fs.watch(config.BISQ.DATA_PATH + '/json', () => {
-      if (fsWait) {
-        clearTimeout(fsWait);
-      }
-      if (this.subdirectoryWatcher) {
-        this.subdirectoryWatcher.close();
-      }
-      fsWait = setTimeout(() => {
-        logger.debug(`Bisq restart detected. Resetting both watchers in 3 minutes.`);
-        setTimeout(() => {
-          this.startTopDirectoryWatcher();
-          this.startSubDirectoryWatcher();
-          this.loadBisqDumpFile();
-        }, 180000);
-      }, 15000);
-    });
-  }
-
-  private startSubDirectoryWatcher() {
-    if (this.subdirectoryWatcher) {
-      this.subdirectoryWatcher.close();
-    }
-    if (!fs.existsSync(Bisq.BLOCKS_JSON_FILE_PATH)) {
-      logger.warn(Bisq.BLOCKS_JSON_FILE_PATH + ` doesn't exist. Trying to restart sub directory watcher again in 3 minutes.`);
-      setTimeout(() => this.startSubDirectoryWatcher(), 180000);
-      return;
-    }
-    let fsWait: NodeJS.Timeout | null = null;
-    this.subdirectoryWatcher = fs.watch(config.BISQ.DATA_PATH + '/json/all', () => {
-      if (fsWait) {
-        clearTimeout(fsWait);
-      }
-      fsWait = setTimeout(() => {
-        logger.debug(`Change detected in the Bisq data folder.`);
-        this.loadBisqDumpFile();
-      }, 2000);
-    });
-  }
-  private async updatePrice() {
-    type axiosOptions = {
-      headers: {
-        'User-Agent': string
-      };
-      timeout: number;
-      httpAgent?: http.Agent;
-      httpsAgent?: https.Agent;
-    }
-    const setDelay = (secs: number = 1): Promise<void> => new Promise(resolve => setTimeout(() => resolve(), secs * 1000));
-    const BISQ_URL = (config.SOCKS5PROXY.ENABLED === true) && (config.SOCKS5PROXY.USE_ONION === true) ? config.EXTERNAL_DATA_SERVER.BISQ_ONION : config.EXTERNAL_DATA_SERVER.BISQ_URL;
-    const isHTTP = (new URL(BISQ_URL).protocol.split(':')[0] === 'http') ? true : false;
-    const axiosOptions: axiosOptions = {
-      headers: {
-        'User-Agent': (config.MEMPOOL.USER_AGENT === 'mempool') ? `mempool/v${backendInfo.getBackendInfo().version}` : `${config.MEMPOOL.USER_AGENT}`
-      },
-      timeout: config.SOCKS5PROXY.ENABLED ? 30000 : 10000
-    };
-    let retry = 0;
-
-    while(retry < config.MEMPOOL.EXTERNAL_MAX_RETRY) {
-      try {
-        if (config.SOCKS5PROXY.ENABLED) {
-          const socksOptions: any = {
-            agentOptions: {
-              keepAlive: true,
-            },
-            hostname: config.SOCKS5PROXY.HOST,
-            port: config.SOCKS5PROXY.PORT
-          };
-
-          if (config.SOCKS5PROXY.USERNAME && config.SOCKS5PROXY.PASSWORD) {
-            socksOptions.username = config.SOCKS5PROXY.USERNAME;
-            socksOptions.password = config.SOCKS5PROXY.PASSWORD;
-          } else {
-            // Retry with different tor circuits https://stackoverflow.com/a/64960234
-            socksOptions.username = `circuit${retry}`;
-          }
-
-          // Handle proxy agent for onion addresses
-          if (isHTTP) {
-            axiosOptions.httpAgent = new SocksProxyAgent(socksOptions);
-          } else {
-            axiosOptions.httpsAgent = new SocksProxyAgent(socksOptions);
-          }
-        }
-        
-        const data: AxiosResponse = await axios.get(`${BISQ_URL}/trades/?market=bsq_btc`, axiosOptions);
-        if (data.statusText === 'error' || !data.data) {
-          throw new Error(`Could not fetch data from Bisq market, Error: ${data.status}`);
-        }
-        const prices: number[] = [];
-        data.data.forEach((trade) => {
-          prices.push(parseFloat(trade.price) * 100000000);
-        });
-        prices.sort((a, b) => a - b);
-        this.price = Common.median(prices);
-        if (this.priceUpdateCallbackFunction) {
-          this.priceUpdateCallbackFunction(this.price);
-        }
-        logger.debug('Successfully updated Bisq market price');
-        break;
-      } catch (e) {
-        logger.err('Error updating Bisq market price: '  + (e instanceof Error ? e.message : e));
-        await setDelay(config.MEMPOOL.EXTERNAL_RETRY_INTERVAL);
-        retry++;
-      }
-    }
-  }
-
-  private async loadBisqDumpFile(): Promise<void> {
-    this.allBlocks = [];
-    try {
-      await this.loadData();
-      this.buildIndex();
-      this.calculateStats();
-    } catch (e) {
-      logger.info('Cannot load bisq dump file because: ' + (e instanceof Error ? e.message : e));
-    }
-  }
-
-  private buildIndex() {
-    const start = new Date().getTime();
-    this.transactions = [];
-    this.transactionIndex = {};
-    this.addressIndex = {};
-
-    this.allBlocks.forEach((block) => {
-      /* Build block index */
-      if (!this.blockIndex[block.hash]) {
-        this.blockIndex[block.hash] = block;
-      }
-
-      /* Build transactions index */
-      block.txs.forEach((tx) => {
-        this.transactions.push(tx);
-        this.transactionIndex[tx.id] = tx;
-      });
-    });
-
-    /* Build address index */
-    this.transactions.forEach((tx) => {
-      tx.inputs.forEach((input) => {
-        if (!this.addressIndex[input.address]) {
-          this.addressIndex[input.address] = [];
-        }
-        if (this.addressIndex[input.address].indexOf(tx) === -1) {
-          this.addressIndex[input.address].push(tx);
-        }
-      });
-      tx.outputs.forEach((output) => {
-        if (!this.addressIndex[output.address]) {
-          this.addressIndex[output.address] = [];
-        }
-        if (this.addressIndex[output.address].indexOf(tx) === -1) {
-          this.addressIndex[output.address].push(tx);
-        }
-      });
-    });
-
-    const time = new Date().getTime() - start;
-    logger.debug('Bisq data index rebuilt in ' + time + ' ms');
-  }
-
-  private calculateStats() {
-    let minted = 0;
-    let burned = 0;
-    let unspent = 0;
-    let spent = 0;
-
-    this.transactions.forEach((tx) => {
-      tx.outputs.forEach((output) => {
-        if (output.opReturn) {
-          return;
-        }
-        if (output.txOutputType === 'GENESIS_OUTPUT' || output.txOutputType === 'ISSUANCE_CANDIDATE_OUTPUT' && output.isVerified) {
-          minted += output.bsqAmount;
-        }
-        if (output.isUnspent) {
-          unspent++;
-        } else {
-          spent++;
-        }
-      });
-      burned += tx['burntFee'];
-    });
-
-    this.stats = {
-      addresses: Object.keys(this.addressIndex).length,
-      minted: minted / 100,
-      burnt: burned / 100,
-      spent_txos: spent,
-      unspent_txos: unspent,
-    };
-  }
-
-  private async loadData(): Promise<any> {
-    if (!fs.existsSync(Bisq.BLOCKS_JSON_FILE_PATH)) {
-      throw new Error(Bisq.BLOCKS_JSON_FILE_PATH + ` doesn't exist`);
-    }
-
-    const readline = require('readline');
-    const events = require('events');
-
-    const rl = readline.createInterface({
-      input: fs.createReadStream(Bisq.BLOCKS_JSON_FILE_PATH),
-      crlfDelay: Infinity
-    });
-
-    let blockBuffer = '';
-    let readingBlock = false;
-    let lineCount = 1;
-    const start = new Date().getTime();
-
-    logger.debug('Processing Bisq data dump...');
-
-    rl.on('line', (line) => {
-      if (lineCount === 2) {
-        line = line.replace('  "chainHeight": ', '');
-        this.latestBlockHeight = parseInt(line, 10);
-      }
-
-      if (line === '    {') {
-        readingBlock = true;
-      } else if (line === '    },') {
-        blockBuffer += '}';
-        try {
-          const block: BisqBlock =  JSON.parse(blockBuffer);
-          this.allBlocks.push(block);
-          readingBlock = false;
-          blockBuffer = '';
-        } catch (e) {
-          logger.debug(blockBuffer);
-          throw Error(`Unable to parse Bisq data dump at line ${lineCount}` + (e instanceof Error ? e.message : e));
-        }
-      }
-
-      if (readingBlock === true) {
-        blockBuffer += line;
-      }
-
-      ++lineCount;
-    });
-
-    await events.once(rl, 'close');
-
-    this.allBlocks.reverse();
-    this.blocks = this.allBlocks.filter((block) => block.txs.length > 0);
-
-    const time = new Date().getTime() - start;
-    logger.debug('Bisq dump processed in ' + time + ' ms');
-  }
-}
-
-export default new Bisq();

backend/src/api/bisq/interfaces.ts

@@ -1,258 +0,0 @@
-
-export interface BisqBlocks {
-  chainHeight: number;
-  blocks: BisqBlock[];
-}
-
-export interface BisqBlock {
-  height: number;
-  time: number;
-  hash: string;
-  previousBlockHash: string;
-  txs: BisqTransaction[];
-}
-
-export interface BisqTransaction {
-  txVersion: string;
-  id: string;
-  blockHeight: number;
-  blockHash: string;
-  time: number;
-  inputs: BisqInput[];
-  outputs: BisqOutput[];
-  txType: string;
-  txTypeDisplayString: string;
-  burntFee: number;
-  invalidatedBsq: number;
-  unlockBlockHeight: number;
-}
-
-export interface BisqStats {
-  minted: number;
-  burnt: number;
-  addresses: number;
-  unspent_txos: number;
-  spent_txos: number;
-}
-
-interface BisqInput {
-  spendingTxOutputIndex: number;
-  spendingTxId: string;
-  bsqAmount: number;
-  isVerified: boolean;
-  address: string;
-  time: number;
-}
-
-interface BisqOutput {
-  txVersion: string;
-  txId: string;
-  index: number;
-  bsqAmount: number;
-  btcAmount: number;
-  height: number;
-  isVerified: boolean;
-  burntFee: number;
-  invalidatedBsq: number;
-  address: string;
-  scriptPubKey: BisqScriptPubKey;
-  time: any;
-  txType: string;
-  txTypeDisplayString: string;
-  txOutputType: string;
-  txOutputTypeDisplayString: string;
-  lockTime: number;
-  isUnspent: boolean;
-  spentInfo: SpentInfo;
-  opReturn?: string;
-}
-
-interface BisqScriptPubKey {
-  addresses: string[];
-  asm: string;
-  hex: string;
-  reqSigs?: number;
-  type: string;
-}
-
-interface SpentInfo {
-  height: number;
-  inputIndex: number;
-  txId: string;
-}
-
-export interface BisqTrade {
-  direction: string;
-  price: string;
-  amount: string;
-  volume: string;
-  payment_method: string;
-  trade_id: string;
-  trade_date: number;
-  market?: string;
-}
-
-export interface Currencies { [txid: string]: Currency; }
-
-export interface Currency {
-  code: string;
-  name: string;
-  precision: number;
-
-  _type: string;
-}
-
-export interface Depth { [market: string]: Market; }
-
-interface Market {
-  'buys': string[];
-  'sells': string[];
-}
-
-export interface HighLowOpenClose {
-  period_start: number | string;
-  open: string;
-  high: string;
-  low: string;
-  close: string;
-  volume_left: string;
-  volume_right: string;
-  avg: string;
-}
-
-export interface Markets { [txid: string]: Pair; }
-
-interface Pair {
-  pair: string;
-  lname: string;
-  rname: string;
-  lsymbol: string;
-  rsymbol: string;
-  lprecision: number;
-  rprecision: number;
-  ltype: string;
-  rtype: string;
-  name: string;
-}
-
-export interface Offers { [market: string]: OffersMarket; }
-
-interface OffersMarket {
-  buys: Offer[] | null;
-  sells: Offer[] | null;
-}
-
-export interface OffersData {
-  direction: string;
-  currencyCode: string;
-  minAmount: number;
-  amount: number;
-  price: number;
-  date: number;
-  useMarketBasedPrice: boolean;
-  marketPriceMargin: number;
-  paymentMethod: string;
-  id: string;
-  currencyPair: string;
-  primaryMarketDirection: string;
-  priceDisplayString: string;
-  primaryMarketAmountDisplayString: string;
-  primaryMarketMinAmountDisplayString: string;
-  primaryMarketVolumeDisplayString: string;
-  primaryMarketMinVolumeDisplayString: string;
-  primaryMarketPrice: number;
-  primaryMarketAmount: number;
-  primaryMarketMinAmount: number;
-  primaryMarketVolume: number;
-  primaryMarketMinVolume: number;
-}
-
-export interface Offer {
-  offer_id: string;
-  offer_date: number;
-  direction: string;
-  min_amount: string;
-  amount: string;
-  price: string;
-  volume: string;
-  payment_method: string;
-  offer_fee_txid: any;
-}
-
-export interface Tickers { [market: string]: Ticker | null; }
-
-export interface Ticker {
-  last: string;
-  high: string;
-  low: string;
-  volume_left: string;
-  volume_right: string;
-  buy: string | null;
-  sell: string | null;
-}
-
-export interface Trade {
-  direction: string;
-  price: string;
-  amount: string;
-  volume: string;
-  payment_method: string;
-  trade_id: string;
-  trade_date: number;
-}
-
-export interface TradesData {
-  currency: string;
-  direction: string;
-  tradePrice: number;
-  tradeAmount: number;
-  tradeDate: number;
-  paymentMethod: string;
-  offerDate: number;
-  useMarketBasedPrice: boolean;
-  marketPriceMargin: number;
-  offerAmount: number;
-  offerMinAmount: number;
-  offerId: string;
-  depositTxId?: string;
-  currencyPair: string;
-  primaryMarketDirection: string;
-  primaryMarketTradePrice: number;
-  primaryMarketTradeAmount: number;
-  primaryMarketTradeVolume: number;
-
-  _market: string;
-  _tradePriceStr: string;
-  _tradeAmountStr: string;
-  _tradeVolumeStr: string;
-  _offerAmountStr: string;
-  _tradePrice: number;
-  _tradeAmount: number;
-  _tradeVolume: number;
-  _offerAmount: number;
-}
-
-export interface MarketVolume {
-  period_start: number;
-  num_trades: number;
-  volume: string;
-}
-
-export interface MarketsApiError {
-  success: number;
-  error: string;
-}
-
-export type Interval = 'minute' | 'half_hour' | 'hour' | 'half_day' | 'day' | 'week' | 'month' | 'year' | 'auto';
-
-export interface SummarizedIntervals { [market: string]: SummarizedInterval; }
-export interface SummarizedInterval {
-  'period_start': number;
-  'open': number;
-  'close': number;
-  'high': number;
-  'low': number;
-  'avg': number;
-  'volume_right': number;
-  'volume_left': number;
-}

backend/src/api/bisq/markets-api.ts

@@ -1,679 +0,0 @@
-import { Currencies, OffersData, TradesData, Depth, Currency, Interval, HighLowOpenClose,
-  Markets, Offers, Offer, BisqTrade, MarketVolume, Tickers, Ticker, SummarizedIntervals, SummarizedInterval } from './interfaces';
-
-const strtotime = require('./strtotime');
-
-class BisqMarketsApi {
-  private cryptoCurrencyData: Currency[] = [];
-  private fiatCurrencyData: Currency[] = [];
-  private activeCryptoCurrencyData: Currency[] = [];
-  private activeFiatCurrencyData: Currency[] = [];
-  private offersData: OffersData[] = [];
-  private tradesData: TradesData[] = [];
-  private fiatCurrenciesIndexed: { [code: string]: true } = {};
-  private allCurrenciesIndexed: { [code: string]: Currency } = {};
-  private tradeDataByMarket: { [market: string]: TradesData[] } = {};
-  private tickersCache: Ticker | Tickers | null = null;
-
-  constructor() { }
-
-  setOffersData(offers: OffersData[]) {
-    this.offersData = offers;
-  }
-
-  setTradesData(trades: TradesData[]) {
-    this.tradesData = trades;
-    this.tradeDataByMarket = {};
-
-    this.tradesData.forEach((trade) => {
-      trade._market = trade.currencyPair.toLowerCase().replace('/', '_');
-      if (!this.tradeDataByMarket[trade._market]) {
-        this.tradeDataByMarket[trade._market] = [];
-      }
-      this.tradeDataByMarket[trade._market].push(trade);
-    });
-  }
-
-  setCurrencyData(cryptoCurrency: Currency[], fiatCurrency: Currency[], activeCryptoCurrency: Currency[], activeFiatCurrency: Currency[]) {
-    this.cryptoCurrencyData = cryptoCurrency,
-    this.fiatCurrencyData = fiatCurrency,
-    this.activeCryptoCurrencyData = activeCryptoCurrency,
-    this.activeFiatCurrencyData = activeFiatCurrency;
-
-    this.fiatCurrenciesIndexed = {};
-    this.allCurrenciesIndexed = {};
-
-    this.fiatCurrencyData.forEach((currency) => {
-      currency._type = 'fiat';
-      this.fiatCurrenciesIndexed[currency.code] = true;
-      this.allCurrenciesIndexed[currency.code] = currency;
-    });
-    this.cryptoCurrencyData.forEach((currency) => {
-       currency._type = 'crypto';
-       this.allCurrenciesIndexed[currency.code] = currency;
-    });
-  }
-
-  updateCache() {
-    this.tickersCache = null;
-    this.tickersCache = this.getTicker();
-  }
-
-  getCurrencies(
-    type: 'crypto' | 'fiat' | 'active' | 'all' = 'all',
-  ): Currencies {
-    let currencies: Currency[];
-
-    switch (type) {
-      case 'fiat':
-        currencies = this.fiatCurrencyData;
-        break;
-      case 'crypto':
-        currencies = this.cryptoCurrencyData;
-        break;
-      case 'active':
-        currencies = this.activeCryptoCurrencyData.concat(this.activeFiatCurrencyData);
-        break;
-      case 'all':
-      default:
-        currencies = this.cryptoCurrencyData.concat(this.fiatCurrencyData);
-    }
-    const result = {};
-    currencies.forEach((currency) => {
-      result[currency.code] = currency;
-    });
-    return result;
-  }
-
-  getDepth(
-    market: string,
-  ): Depth {
-    const currencyPair = market.replace('_', '/').toUpperCase();
-
-    const buys = this.offersData
-      .filter((offer) => offer.currencyPair === currencyPair && offer.primaryMarketDirection === 'BUY')
-      .map((offer) => offer.price)
-      .sort((a, b) => b - a)
-      .map((price) => this.intToBtc(price));
-
-    const sells = this.offersData
-      .filter((offer) => offer.currencyPair === currencyPair && offer.primaryMarketDirection === 'SELL')
-      .map((offer) => offer.price)
-      .sort((a, b) => a - b)
-      .map((price) => this.intToBtc(price));
-
-    const result = {};
-    result[market] = {
-      'buys': buys,
-      'sells': sells,
-    };
-    return result;
-  }
-
-  getOffers(
-    market: string,
-    direction?: 'buy' | 'sell',
-  ): Offers {
-    const currencyPair = market.replace('_', '/').toUpperCase();
-
-    let buys: Offer[] | null = null;
-    let sells: Offer[] | null = null;
-
-    if (!direction || direction === 'buy') {
-      buys = this.offersData
-        .filter((offer) => offer.currencyPair === currencyPair && offer.primaryMarketDirection === 'BUY')
-        .sort((a, b) => b.price - a.price)
-        .map((offer) => this.offerDataToOffer(offer, market));
-    }
-
-    if (!direction || direction === 'sell') {
-      sells = this.offersData
-        .filter((offer) => offer.currencyPair === currencyPair && offer.primaryMarketDirection === 'SELL')
-        .sort((a, b) => a.price - b.price)
-        .map((offer) => this.offerDataToOffer(offer, market));
-    }
-
-    const result: Offers = {};
-    result[market] = {
-      'buys': buys,
-      'sells': sells,
-    };
-    return result;
-  }
-
-  getMarkets(): Markets {
-    const allCurrencies = this.getCurrencies();
-    const activeCurrencies = this.getCurrencies('active');
-    const markets = {};
-
-    for (const currency of Object.keys(activeCurrencies)) {
-      if (allCurrencies[currency].code === 'BTC') {
-        continue;
-      }
-
-      const isFiat = allCurrencies[currency]._type === 'fiat';
-      const pmarketname = allCurrencies['BTC']['name'];
-
-      const lsymbol = isFiat ? 'BTC' : currency;
-      const rsymbol = isFiat ? currency : 'BTC';
-      const lname = isFiat ? pmarketname : allCurrencies[currency].name;
-      const rname = isFiat ? allCurrencies[currency].name : pmarketname;
-      const ltype = isFiat ? 'crypto' : allCurrencies[currency]._type;
-      const rtype = isFiat ? 'fiat' : 'crypto';
-      const lprecision = 8;
-      const rprecision = isFiat ? 2 : 8;
-      const pair = lsymbol.toLowerCase() + '_' + rsymbol.toLowerCase();
-
-      markets[pair] = {
-        'pair': pair,
-        'lname': lname,
-        'rname': rname,
-        'lsymbol': lsymbol,
-        'rsymbol': rsymbol,
-        'lprecision': lprecision,
-        'rprecision': rprecision,
-        'ltype': ltype,
-        'rtype': rtype,
-        'name': lname + '/' + rname,
-      };
-    }
-
-    return markets;
-  }
-
-  getTrades(
-    market: string,
-    timestamp_from?: number,
-    timestamp_to?: number,
-    trade_id_from?: string,
-    trade_id_to?: string,
-    direction?: 'buy' | 'sell',
-    limit: number = 100,
-    sort: 'asc' | 'desc' = 'desc',
-  ): BisqTrade[] {
-      limit = Math.min(limit, 2000);
-      const _market = market === 'all' ? undefined : market;
-
-      if (!timestamp_from) {
-        timestamp_from = new Date('2016-01-01').getTime() / 1000;
-      }
-      if (!timestamp_to) {
-        timestamp_to = new Date().getTime() / 1000;
-      }
-
-      const matches = this.getTradesByCriteria(_market, timestamp_to, timestamp_from,
-        trade_id_to, trade_id_from, direction, sort, limit, false);
-
-      if (sort === 'asc') {
-        matches.sort((a, b) => a.tradeDate - b.tradeDate);
-      } else {
-        matches.sort((a, b) => b.tradeDate - a.tradeDate);
-      }
-
-      return matches.map((trade) => {
-        const bsqTrade: BisqTrade = {
-          direction: trade.primaryMarketDirection,
-          price: trade._tradePriceStr,
-          amount: trade._tradeAmountStr,
-          volume: trade._tradeVolumeStr,
-          payment_method: trade.paymentMethod,
-          trade_id: trade.offerId,
-          trade_date: trade.tradeDate,
-        };
-        if (market === 'all') {
-          bsqTrade.market = trade._market;
-        }
-        return bsqTrade;
-      });
-  }
-
-  getVolumes(
-    market?: string,
-    timestamp_from?: number,
-    timestamp_to?: number,
-    interval: Interval = 'auto',
-    milliseconds?: boolean,
-    timestamp: 'no' | 'yes' = 'yes',
-  ): MarketVolume[] {
-    if (milliseconds) {
-      timestamp_from = timestamp_from ? timestamp_from / 1000 : timestamp_from;
-      timestamp_to = timestamp_to ? timestamp_to / 1000 : timestamp_to;
-    }
-    if (!timestamp_from) {
-      timestamp_from = new Date('2016-01-01').getTime() / 1000;
-    }
-    if (!timestamp_to) {
-      timestamp_to = new Date().getTime() / 1000;
-    }
-
-    const trades = this.getTradesByCriteria(market, timestamp_to, timestamp_from,
-      undefined, undefined, undefined, 'asc', Number.MAX_SAFE_INTEGER);
-
-    if (interval === 'auto') {
-      const range = timestamp_to - timestamp_from;
-      interval = this.getIntervalFromRange(range);
-    }
-
-    const intervals: any = {};
-    const marketVolumes: MarketVolume[] = [];
-
-    for (const trade of trades) {
-      const traded_at = trade['tradeDate'] / 1000;
-      const interval_start = this.intervalStart(traded_at, interval);
-
-      if (!intervals[interval_start]) {
-        intervals[interval_start] = {
-          'volume': 0,
-          'num_trades': 0,
-        };
-      }
-
-      const period = intervals[interval_start];
-      period['period_start'] = interval_start;
-      period['volume'] += this.fiatCurrenciesIndexed[trade.currency] ? trade._tradeAmount : trade._tradeVolume;
-      period['num_trades']++;
-    }
-
-    for (const p in intervals) {
-      if (intervals.hasOwnProperty(p)) {
-        const period = intervals[p];
-        marketVolumes.push({
-          period_start: timestamp === 'no' ? new Date(period['period_start'] * 1000).toISOString() : period['period_start'],
-          num_trades: period['num_trades'],
-          volume: this.intToBtc(period['volume']),
-        });
-      }
-    }
-
-    return marketVolumes;
-  }
-
-  getTicker(
-    market?: string,
-  ): Tickers | Ticker | null {
-    if (market) {
-      return this.getTickerFromMarket(market);
-    }
-
-    if (this.tickersCache) {
-      return this.tickersCache;
-    }
-
-    const allMarkets = this.getMarkets();
-    const tickers = {};
-    for (const m in allMarkets) {
-      if (allMarkets.hasOwnProperty(m)) {
-        tickers[allMarkets[m].pair] = this.getTickerFromMarket(allMarkets[m].pair);
-      }
-    }
-
-    return tickers;
-  }
-
-  getTickerFromMarket(market: string): Ticker | null {
-    let ticker: Ticker;
-    const timestamp_from = strtotime('-24 hour');
-    const timestamp_to = new Date().getTime() / 1000;
-    const trades = this.getTradesByCriteria(market, timestamp_to, timestamp_from,
-      undefined, undefined, undefined, 'asc', Number.MAX_SAFE_INTEGER);
-
-    const periods: SummarizedInterval[] = Object.values(this.getTradesSummarized(trades, timestamp_from));
-
-    const allCurrencies = this.getCurrencies();
-    const currencyRight = allCurrencies[market.split('_')[1].toUpperCase()];
-
-    if (periods[0]) {
-      ticker = {
-        'last': this.intToBtc(periods[0].close),
-        'high': this.intToBtc(periods[0].high),
-        'low': this.intToBtc(periods[0].low),
-        'volume_left': this.intToBtc(periods[0].volume_left),
-        'volume_right': this.intToBtc(periods[0].volume_right),
-        'buy': null,
-        'sell': null,
-      };
-    } else {
-      const lastTrade = this.tradeDataByMarket[market];
-      if (!lastTrade) {
-        return null;
-      }
-      const tradePrice = lastTrade[0].primaryMarketTradePrice * Math.pow(10, 8 - currencyRight.precision);
-
-      const lastTradePrice = this.intToBtc(tradePrice);
-      ticker = {
-        'last': lastTradePrice,
-        'high': lastTradePrice,
-        'low': lastTradePrice,
-        'volume_left': '0',
-        'volume_right': '0',
-        'buy': null,
-        'sell': null,
-      };
-    }
-
-    const timestampFromMilli = timestamp_from * 1000;
-    const timestampToMilli = timestamp_to * 1000;
-
-    const currencyPair = market.replace('_', '/').toUpperCase();
-    const offersData = this.offersData.slice().sort((a, b) => a.price - b.price);
-
-    const buy = offersData.find((offer) => offer.currencyPair === currencyPair
-                                          && offer.primaryMarketDirection === 'BUY'
-                                          && offer.date >= timestampFromMilli
-                                          && offer.date <= timestampToMilli
-                                        );
-    const sell = offersData.find((offer) => offer.currencyPair === currencyPair
-                                            && offer.primaryMarketDirection === 'SELL'
-                                            && offer.date >= timestampFromMilli
-                                            && offer.date <= timestampToMilli
-                                          );
-
-    if (buy) {
-      ticker.buy = this.intToBtc(buy.primaryMarketPrice * Math.pow(10, 8 - currencyRight.precision));
-    }
-    if (sell) {
-      ticker.sell = this.intToBtc(sell.primaryMarketPrice * Math.pow(10, 8 - currencyRight.precision));
-    }
-
-    return ticker;
-  }
-
-  getHloc(
-    market: string,
-    interval: Interval = 'auto',
-    timestamp_from?: number,
-    timestamp_to?: number,
-    milliseconds?: boolean,
-    timestamp: 'no' | 'yes' = 'yes',
-  ): HighLowOpenClose[] {
-    if (milliseconds) {
-      timestamp_from = timestamp_from ? timestamp_from / 1000 : timestamp_from;
-      timestamp_to = timestamp_to ? timestamp_to / 1000 : timestamp_to;
-    }
-    if (!timestamp_from) {
-      timestamp_from = new Date('2016-01-01').getTime() / 1000;
-    }
-    if (!timestamp_to) {
-      timestamp_to = new Date().getTime() / 1000;
-    }
-
-    const trades = this.getTradesByCriteria(market, timestamp_to, timestamp_from,
-      undefined, undefined, undefined, 'asc', Number.MAX_SAFE_INTEGER);
-
-    if (interval === 'auto') {
-      const range = timestamp_to - timestamp_from;
-      interval = this.getIntervalFromRange(range);
-    }
-
-    const intervals = this.getTradesSummarized(trades, timestamp_from, interval);
-
-    const hloc: HighLowOpenClose[] = [];
-
-    for (const p in intervals) {
-      if (intervals.hasOwnProperty(p)) {
-        const period = intervals[p];
-        hloc.push({
-          period_start: timestamp === 'no' ? new Date(period['period_start'] * 1000).toISOString() : period['period_start'],
-          open: this.intToBtc(period['open']),
-          close: this.intToBtc(period['close']),
-          high: this.intToBtc(period['high']),
-          low: this.intToBtc(period['low']),
-          avg: this.intToBtc(period['avg']),
-          volume_right: this.intToBtc(period['volume_right']),
-          volume_left: this.intToBtc(period['volume_left']),
-        });
-      }
-    }
-
-    return hloc;
-  }
-
-  private getIntervalFromRange(range: number): Interval {
-    // two days range loads minute data
-    if (range <= 3600) {
-      // up to one hour range loads minutely data
-      return 'minute';
-    } else if (range <= 1 * 24 * 3600) {
-      // up to one day range loads half-hourly data
-      return 'half_hour';
-    } else if (range <= 3 * 24 * 3600) {
-      // up to 3 day range loads hourly data
-      return 'hour';
-    } else if (range <= 7 * 24 * 3600) {
-      // up to 7 day range loads half-daily data
-      return 'half_day';
-    } else if (range <= 60 * 24 * 3600) {
-      // up to 2 month range loads daily data
-      return 'day';
-    } else if (range <= 12 * 31 * 24 * 3600) {
-      // up to one year range loads weekly data
-      return 'week';
-    } else if (range <= 12 * 31 * 24 * 3600) {
-      // up to 5 year range loads monthly data
-      return 'month';
-    } else {
-      // greater range loads yearly data
-      return 'year';
-    }
-  }
-
-  getVolumesByTime(time: number): MarketVolume[] {
-    const timestamp_from = new Date().getTime() / 1000 - time;
-    const timestamp_to = new Date().getTime() / 1000;
-
-    const trades = this.getTradesByCriteria(undefined, timestamp_to, timestamp_from,
-      undefined, undefined, undefined, 'asc', Number.MAX_SAFE_INTEGER);
-
-    const markets: any = {};
-
-    for (const trade of trades) {
-      if (!markets[trade._market]) {
-        markets[trade._market] = {
-          'volume': 0,
-          'num_trades': 0,
-        };
-      }
-
-      markets[trade._market]['volume'] += this.fiatCurrenciesIndexed[trade.currency] ? trade._tradeAmount : trade._tradeVolume;
-      markets[trade._market]['num_trades']++;
-    }
-
-    return markets;
-  }
-
-  private getTradesSummarized(trades: TradesData[], timestamp_from: number, interval?: string): SummarizedIntervals {
-    const intervals: any = {};
-    const intervals_prices: any = {};
-
-    for (const trade of trades) {
-      const traded_at = trade.tradeDate / 1000;
-      const interval_start = !interval ? timestamp_from : this.intervalStart(traded_at, interval);
-
-      if (!intervals[interval_start]) {
-          intervals[interval_start] = {
-            'open': 0,
-            'close': 0,
-            'high': 0,
-            'low': 0,
-            'avg': 0,
-            'volume_right': 0,
-            'volume_left': 0,
-        };
-        intervals_prices[interval_start] = [];
-      }
-      const period = intervals[interval_start];
-      const price = trade._tradePrice;
-
-      if (!intervals_prices[interval_start]['leftvol']) {
-        intervals_prices[interval_start]['leftvol'] = [];
-      }
-      if (!intervals_prices[interval_start]['rightvol']) {
-        intervals_prices[interval_start]['rightvol'] = [];
-      }
-
-      intervals_prices[interval_start]['leftvol'].push(trade._tradeAmount);
-      intervals_prices[interval_start]['rightvol'].push(trade._tradeVolume);
-
-      if (price) {
-          const plow = period['low'];
-          period['period_start'] = interval_start;
-          period['open'] = period['open'] || price;
-          period['close'] = price;
-          period['high'] = price > period['high'] ? price : period['high'];
-          period['low'] = (plow && price > plow) ? period['low'] : price;
-          period['avg'] = intervals_prices[interval_start]['rightvol'].reduce((p: number, c: number) => c + p, 0)
-            / intervals_prices[interval_start]['leftvol'].reduce((c: number, p: number) => c + p, 0) * 100000000;
-          period['volume_left'] += trade._tradeAmount;
-          period['volume_right'] += trade._tradeVolume;
-      }
-    }
-    return intervals;
-  }
-
-  private getTradesByCriteria(
-    market: string | undefined,
-    timestamp_to: number,
-    timestamp_from: number,
-    trade_id_to: string | undefined,
-    trade_id_from: string | undefined,
-    direction: 'buy' | 'sell' | undefined,
-    sort: string,
-    limit: number,
-    integerAmounts: boolean = true,
- ): TradesData[] {
-    let trade_id_from_ts: number | null = null;
-    let trade_id_to_ts: number | null = null;
-    const allCurrencies = this.getCurrencies();
-
-    const timestampFromMilli = timestamp_from * 1000;
-    const timestampToMilli = timestamp_to * 1000;
-
-    // note: the offer_id_from/to depends on iterating over trades in
-    // descending chronological order.
-    const tradesDataSorted = this.tradesData.slice();
-    if (sort === 'asc') {
-      tradesDataSorted.reverse();
-    }
-
-    let matches: TradesData[] = [];
-    for (const trade of tradesDataSorted) {
-      if (trade_id_from === trade.offerId) {
-        trade_id_from_ts = trade.tradeDate;
-      }
-      if (trade_id_to === trade.offerId) {
-        trade_id_to_ts = trade.tradeDate;
-      }
-      if (trade_id_to && trade_id_to_ts === null) {
-        continue;
-      }
-      if (trade_id_from && trade_id_from_ts != null && trade_id_from_ts !== trade.tradeDate) {
-        continue;
-      }
-      if (market && market !== trade._market) {
-        continue;
-      }
-      if (timestampFromMilli && timestampFromMilli > trade.tradeDate) {
-        continue;
-      }
-      if (timestampToMilli && timestampToMilli < trade.tradeDate) {
-        continue;
-      }
-      if (direction && direction !== trade.direction.toLowerCase()) {
-        continue;
-      }
-
-      // Filter out bogus trades with BTC/BTC or XXX/XXX market.
-      // See github issue: https://github.com/bitsquare/bitsquare/issues/883
-      const currencyPairs = trade.currencyPair.split('/');
-      if (currencyPairs[0] === currencyPairs[1]) {
-        continue;
-      }
-
-      const currencyLeft = allCurrencies[currencyPairs[0]];
-      const currencyRight = allCurrencies[currencyPairs[1]];
-
-      if (!currencyLeft || !currencyRight) {
-        continue;
-      }
-
-      const tradePrice = trade.primaryMarketTradePrice * Math.pow(10, 8 - currencyRight.precision);
-      const tradeAmount = trade.primaryMarketTradeAmount * Math.pow(10, 8 - currencyLeft.precision);
-      const tradeVolume = trade.primaryMarketTradeVolume * Math.pow(10, 8 - currencyRight.precision);
-
-      if (integerAmounts) {
-        trade._tradePrice = tradePrice;
-        trade._tradeAmount = tradeAmount;
-        trade._tradeVolume = tradeVolume;
-        trade._offerAmount = trade.offerAmount;
-      } else {
-        trade._tradePriceStr = this.intToBtc(tradePrice);
-        trade._tradeAmountStr = this.intToBtc(tradeAmount);
-        trade._tradeVolumeStr = this.intToBtc(tradeVolume);
-        trade._offerAmountStr = this.intToBtc(trade.offerAmount);
-      }
-
-      matches.push(trade);
-
-      if (matches.length >= limit) {
-        break;
-      }
-    }
-
-    if ((trade_id_from && !trade_id_from_ts) || (trade_id_to && !trade_id_to_ts)) {
-      matches = [];
-    }
-    return matches;
-  }
-
-  private intervalStart(ts: number, interval: string): number {
-    switch (interval) {
-        case 'minute':
-            return (ts - (ts % 60));
-        case '10_minute':
-            return (ts - (ts % 600));
-        case 'half_hour':
-            return (ts - (ts % 1800));
-        case 'hour':
-            return (ts - (ts % 3600));
-        case 'half_day':
-            return (ts - (ts % (3600 * 12)));
-        case 'day':
-            return strtotime('midnight today', ts);
-        case 'week':
-            return strtotime('midnight sunday last week', ts);
-        case 'month':
-            return strtotime('midnight first day of this month', ts);
-        case 'year':
-            return strtotime('midnight first day of january', ts);
-        default:
-            throw new Error('Unsupported interval: ' + interval);
-    }
-}
-
-  private offerDataToOffer(offer: OffersData, market: string): Offer {
-    const currencyPairs = market.split('_');
-    const currencyRight = this.allCurrenciesIndexed[currencyPairs[1].toUpperCase()];
-    const currencyLeft = this.allCurrenciesIndexed[currencyPairs[0].toUpperCase()];
-    const price = offer['primaryMarketPrice'] * Math.pow( 10, 8 - currencyRight['precision']);
-    const amount = offer['primaryMarketAmount'] * Math.pow( 10, 8 - currencyLeft['precision']);
-    const volume = offer['primaryMarketVolume'] * Math.pow( 10, 8 - currencyRight['precision']);
-
-    return {
-      offer_id: offer.id,
-      offer_date: offer.date,
-      direction: offer.primaryMarketDirection,
-      min_amount: this.intToBtc(offer.minAmount),
-      amount: this.intToBtc(amount),
-      price: this.intToBtc(price),
-      volume: this.intToBtc(volume),
-      payment_method: offer.paymentMethod,
-      offer_fee_txid: null,
-    };
-  }
-
-  private intToBtc(val: number): string {
-    return (val / 100000000).toFixed(8);
-  }
-}
-
-export default new BisqMarketsApi();

backend/src/api/bisq/markets.ts

@@ -1,137 +0,0 @@
-import config from '../../config';
-import * as fs from 'fs';
-import { OffersData as OffersData, TradesData, Currency } from './interfaces';
-import bisqMarket from './markets-api';
-import logger from '../../logger';
-
-class Bisq {
-  private static FOLDER_WATCH_CHANGE_DETECTION_DEBOUNCE = 4000;
-  private static MARKET_JSON_PATH = config.BISQ.DATA_PATH;
-  private static MARKET_JSON_FILE_PATHS = {
-    activeCryptoCurrency: '/active_crypto_currency_list.json',
-    activeFiatCurrency: '/active_fiat_currency_list.json',
-    cryptoCurrency: '/crypto_currency_list.json',
-    fiatCurrency: '/fiat_currency_list.json',
-    offers: '/offers_statistics.json',
-    trades: '/trade_statistics.json',
-  };
-
-  private cryptoCurrencyLastMtime = new Date('2016-01-01');
-  private fiatCurrencyLastMtime = new Date('2016-01-01');
-  private offersLastMtime = new Date('2016-01-01');
-  private tradesLastMtime = new Date('2016-01-01');
-
-  private subdirectoryWatcher: fs.FSWatcher | undefined;
-
-  constructor() {}
-
-  startBisqService(): void {
-    try {
-      this.checkForBisqDataFolder();
-    } catch (e) {
-      logger.info('Retrying to start bisq service (markets) in 3 minutes');
-      setTimeout(this.startBisqService.bind(this), 180000);
-      return;
-    }
-    this.loadBisqDumpFile();
-    this.startBisqDirectoryWatcher();
-  }
-
-  private checkForBisqDataFolder() {
-    if (!fs.existsSync(Bisq.MARKET_JSON_PATH + Bisq.MARKET_JSON_FILE_PATHS.cryptoCurrency)) {
-      logger.err(Bisq.MARKET_JSON_PATH + Bisq.MARKET_JSON_FILE_PATHS.cryptoCurrency + ` doesn't exist. Make sure Bisq is running and the config is correct before starting the server.`);
-      throw new Error(`Cannot load BISQ ${Bisq.MARKET_JSON_FILE_PATHS.cryptoCurrency} file`);
-    }
-  }
-
-  private startBisqDirectoryWatcher() {
-    if (this.subdirectoryWatcher) {
-      this.subdirectoryWatcher.close();
-    }
-    if (!fs.existsSync(Bisq.MARKET_JSON_PATH + Bisq.MARKET_JSON_FILE_PATHS.cryptoCurrency)) {
-      logger.warn(Bisq.MARKET_JSON_PATH + Bisq.MARKET_JSON_FILE_PATHS.cryptoCurrency + ` doesn't exist. Trying to restart sub directory watcher again in 3 minutes.`);
-      setTimeout(() => this.startBisqDirectoryWatcher(), 180000);
-      return;
-    }
-    let fsWait: NodeJS.Timeout | null = null;
-    this.subdirectoryWatcher = fs.watch(Bisq.MARKET_JSON_PATH, () => {
-      if (fsWait) {
-        clearTimeout(fsWait);
-      }
-      fsWait = setTimeout(() => {
-        logger.debug(`Change detected in the Bisq market data folder.`);
-        this.loadBisqDumpFile();
-      }, Bisq.FOLDER_WATCH_CHANGE_DETECTION_DEBOUNCE);
-    });
-  }
-
-  private async loadBisqDumpFile(): Promise<void> {
-    const start = new Date().getTime();
-    try {
-      let marketsDataUpdated = false;
-      const cryptoMtime = this.getFileMtime(Bisq.MARKET_JSON_FILE_PATHS.cryptoCurrency);
-      const fiatMtime = this.getFileMtime(Bisq.MARKET_JSON_FILE_PATHS.fiatCurrency);
-      if (cryptoMtime > this.cryptoCurrencyLastMtime || fiatMtime > this.fiatCurrencyLastMtime) {
-        const cryptoCurrencyData = await this.loadData<Currency[]>(Bisq.MARKET_JSON_FILE_PATHS.cryptoCurrency);
-        const fiatCurrencyData = await this.loadData<Currency[]>(Bisq.MARKET_JSON_FILE_PATHS.fiatCurrency);
-        const activeCryptoCurrencyData = await this.loadData<Currency[]>(Bisq.MARKET_JSON_FILE_PATHS.activeCryptoCurrency);
-        const activeFiatCurrencyData = await this.loadData<Currency[]>(Bisq.MARKET_JSON_FILE_PATHS.activeFiatCurrency);
-        logger.debug('Updating Bisq Market Currency Data');
-        bisqMarket.setCurrencyData(cryptoCurrencyData, fiatCurrencyData, activeCryptoCurrencyData, activeFiatCurrencyData);
-        if (cryptoMtime > this.cryptoCurrencyLastMtime) {
-          this.cryptoCurrencyLastMtime = cryptoMtime;
-        }
-        if (fiatMtime > this.fiatCurrencyLastMtime) {
-          this.fiatCurrencyLastMtime = fiatMtime;
-        }
-        marketsDataUpdated = true;
-      }
-      const offersMtime = this.getFileMtime(Bisq.MARKET_JSON_FILE_PATHS.offers);
-      if (offersMtime > this.offersLastMtime) {
-        const offersData = await this.loadData<OffersData[]>(Bisq.MARKET_JSON_FILE_PATHS.offers);
-        logger.debug('Updating Bisq Market Offers Data');
-        bisqMarket.setOffersData(offersData);
-        this.offersLastMtime = offersMtime;
-        marketsDataUpdated = true;
-      }
-      const tradesMtime = this.getFileMtime(Bisq.MARKET_JSON_FILE_PATHS.trades);
-      if (tradesMtime > this.tradesLastMtime) {
-        const tradesData = await this.loadData<TradesData[]>(Bisq.MARKET_JSON_FILE_PATHS.trades);
-        logger.debug('Updating Bisq Market Trades Data');
-        bisqMarket.setTradesData(tradesData);
-        this.tradesLastMtime = tradesMtime;
-        marketsDataUpdated = true;
-      }
-      if (marketsDataUpdated) {
-        bisqMarket.updateCache();
-        const time = new Date().getTime() - start;
-        logger.debug('Bisq market data updated in ' + time + ' ms');
-      }
-    } catch (e) {
-      logger.err('loadBisqMarketDataDumpFile() error.' + (e instanceof Error ? e.message : e));
-    }
-  }
-
-  private getFileMtime(path: string): Date {
-    const stats = fs.statSync(Bisq.MARKET_JSON_PATH + path);
-    return stats.mtime;
-  }
-
-  private loadData<T>(path: string): Promise<T> {
-    return new Promise((resolve, reject) => {
-      fs.readFile(Bisq.MARKET_JSON_PATH + path, 'utf8', (err, data) => {
-        if (err) {
-          reject(err);
-        }
-        try {
-          const parsedData = JSON.parse(data);
-          resolve(parsedData);
-        } catch (e) {
-          reject('JSON parse error (' + path + ')');
-        }
-      });
-    });
-  }
-}
-
-export default new Bisq();

backend/src/api/bitcoin/bitcoin-api-abstract-factory.ts

@@ -1,28 +1,19 @@
-import { IEsploraApi } from './esplora-api.interface';
+import { IMempoolInfo, ITransaction, IBlock } from '../../interfaces';
 
 export interface AbstractBitcoinApi {
-  $getRawMempool(): Promise<IEsploraApi.Transaction['txid'][]>;
-  $getRawTransaction(txId: string, skipConversion?: boolean, addPrevout?: boolean, lazyPrevouts?: boolean): Promise<IEsploraApi.Transaction>;
-  $getTransactionHex(txId: string): Promise<string>;
-  $getBlockHeightTip(): Promise<number>;
-  $getBlockHashTip(): Promise<string>;
-  $getTxIdsForBlock(hash: string): Promise<string[]>;
-  $getBlockHash(height: number): Promise<string>;
-  $getBlockHeader(hash: string): Promise<string>;
-  $getBlock(hash: string): Promise<IEsploraApi.Block>;
-  $getRawBlock(hash: string): Promise<Buffer>;
-  $getAddress(address: string): Promise<IEsploraApi.Address>;
-  $getAddressTransactions(address: string, lastSeenTxId: string): Promise<IEsploraApi.Transaction[]>;
-  $getAddressPrefix(prefix: string): string[];
-  $sendRawTransaction(rawTransaction: string): Promise<string>;
-  $getOutspend(txId: string, vout: number): Promise<IEsploraApi.Outspend>;
-  $getOutspends(txId: string): Promise<IEsploraApi.Outspend[]>;
-  $getBatchedOutspends(txId: string[]): Promise<IEsploraApi.Outspend[][]>;
-}
-export interface BitcoinRpcCredentials {
-  host: string;
-  port: number;
-  user: string;
-  pass: string;
-  timeout: number;
+  getMempoolInfo(): Promise<IMempoolInfo>;
+  getRawMempool(): Promise<ITransaction['txid'][]>;
+  getRawTransaction(txId: string): Promise<ITransaction>;
+  getBlockCount(): Promise<number>;
+  getBlockAndTransactions(hash: string): Promise<IBlock>;
+  getBlockHash(height: number): Promise<string>;
+
+  getBlock(hash: string): Promise<IBlock>;
+  getBlockTransactions(hash: string): Promise<IBlock>;
+  getBlockTransactionsFromIndex(hash: string, index: number): Promise<IBlock>;
+  getBlocks(): Promise<string>;
+  getBlocksFromHeight(height: number): Promise<string>;
+  getAddress(address: string): Promise<IBlock>;
+  getAddressTransactions(address: string): Promise<IBlock>;
+  getAddressTransactionsFromLastSeenTxid(address: string, lastSeenTxid: string): Promise<IBlock>;
 }

backend/src/api/bitcoin/bitcoin-api-factory.ts

@@ -1,22 +1,16 @@
-import config from '../../config';
+const config = require('../../../mempool-config.json');
 import { AbstractBitcoinApi } from './bitcoin-api-abstract-factory';
-import EsploraApi from './esplora-api';
-import BitcoinApi from './bitcoin-api';
-import ElectrumApi from './electrum-api';
-import bitcoinClient from './bitcoin-client';
+import BitcoindApi from './bitcoind-api';
+import ElectrsApi from './electrs-api';
 
-function bitcoinApiFactory(): AbstractBitcoinApi {
-  switch (config.MEMPOOL.BACKEND) {
-    case 'esplora':
-      return new EsploraApi();
-    case 'electrum':
-      return new ElectrumApi(bitcoinClient);
-    case 'none':
+function factory(): AbstractBitcoinApi {
+  switch (config.BACKEND_API) {
+    case 'electrs':
+      return new ElectrsApi();
+    case 'bitcoind':
     default:
-      return new BitcoinApi(bitcoinClient);
+      return new BitcoindApi();
   }
 }
 
-export const bitcoinCoreApi = new BitcoinApi(bitcoinClient);
-
-export default bitcoinApiFactory();
+export default factory();

backend/src/api/bitcoin/bitcoin-api.interface.ts

@@ -1,206 +0,0 @@
-export namespace IBitcoinApi {
-  export interface MempoolInfo {
-    loaded: boolean;                 //  (boolean) True if the mempool is fully loaded
-    size: number;                    //  (numeric) Current tx count
-    bytes: number;                   //  (numeric) Sum of all virtual transaction sizes as defined in BIP 141.
-    usage: number;                   //  (numeric) Total memory usage for the mempool
-    total_fee: number;               //  (numeric) Total fees of transactions in the mempool
-    maxmempool: number;              //  (numeric) Maximum memory usage for the mempool
-    mempoolminfee: number;           //  (numeric) Minimum fee rate in BTC/kB for tx to be accepted.
-    minrelaytxfee: number;           //  (numeric) Current minimum relay fee for transactions
-  }
-
-  export interface RawMempool { [txId: string]: MempoolEntry; }
-
-  export interface MempoolEntry {
-    vsize: number;                   //  (numeric) virtual transaction size as defined in BIP 141.
-    weight: number;                  //  (numeric) transaction weight as defined in BIP 141.
-    time: number;                    //  (numeric) local time transaction entered pool in seconds since 1 Jan 1970 GMT
-    height: number;                  //  (numeric) block height when transaction entered pool
-    descendantcount: number;         //  (numeric) number of in-mempool descendant transactions (including this one)
-    descendantsize: number;          //  (numeric) virtual transaction size of in-mempool descendants (including this one)
-    ancestorcount: number;           //  (numeric) number of in-mempool ancestor transactions (including this one)
-    ancestorsize: number;            //  (numeric) virtual transaction size of in-mempool ancestors (including this one)
-    wtxid: string;                   //  (string) hash of serialized transactionumber; including witness data
-    fees: {
-      base: number;                  //  (numeric) transaction fee in BTC
-      modified: number;              //  (numeric) transaction fee with fee deltas used for mining priority in BTC
-      ancestor: number;              //  (numeric) modified fees (see above) of in-mempool ancestors (including this one) in BTC
-      descendant: number;            //  (numeric) modified fees (see above) of in-mempool descendants (including this one) in BTC
-    };
-    depends: string[];               //  (string) parent transaction id
-    spentby: string[];               //  (array) unconfirmed transactions spending outputs from this transaction
-    'bip125-replaceable': boolean;   //  (boolean) Whether this transaction could be replaced due to BIP125 (replace-by-fee)
-  }
-
-  export interface Block {
-    hash: string;                    //  (string) the block hash (same as provided)
-    confirmations: number;           //  (numeric) The number of confirmations, or -1 if the block is not on the main chain
-    size: number;                    //  (numeric) The block size
-    strippedsize: number;            //  (numeric) The block size excluding witness data
-    weight: number;                  //  (numeric) The block weight as defined in BIP 141
-    height: number;                  //  (numeric) The block height or index
-    version: number;                 //  (numeric) The block version
-    versionHex: string;              //  (string) The block version formatted in hexadecimal
-    merkleroot: string;              //  (string) The merkle root
-    tx: Transaction[];
-    time: number;                    //  (numeric) The block time expressed in UNIX epoch time
-    mediantime: number;              //  (numeric) The median block time expressed in UNIX epoch time
-    nonce: number;                   //  (numeric) The nonce
-    bits: string;                    //  (string) The bits
-    difficulty: number;              //  (numeric) The difficulty
-    chainwork: string;               //  (string) Expected number of hashes required to produce the chain up to this block (in hex)
-    nTx: number;                     //  (numeric) The number of transactions in the block
-    previousblockhash: string;       //  (string) The hash of the previous block
-    nextblockhash: string;           //  (string) The hash of the next block
-  }
-
-  export interface Transaction {
-    in_active_chain: boolean;        //  (boolean) Whether specified block is in the active chain or not
-    hex: string;                     //  (string) The serialized, hex-encoded data for 'txid'
-    txid: string;                    //  (string) The transaction id (same as provided)
-    hash: string;                    //  (string) The transaction hash (differs from txid for witness transactions)
-    size: number;                    //  (numeric) The serialized transaction size
-    vsize: number;                   //  (numeric) The virtual transaction size (differs from size for witness transactions)
-    weight: number;                  //  (numeric) The transaction's weight (between vsize*4-3 and vsize*4)
-    version: number;                 //  (numeric) The version
-    locktime: number;                //  (numeric) The lock time
-    vin: Vin[];
-    vout: Vout[];
-    blockhash: string;               //  (string) the block hash
-    confirmations: number;           //  (numeric) The confirmations
-    blocktime: number;               //  (numeric) The block time expressed in UNIX epoch time
-    time: number;                    //  (numeric) Same as blocktime
-  }
-
-  export interface VerboseBlock extends Block {
-    tx: VerboseTransaction[];        // The transactions in the format of the getrawtransaction RPC. Different from verbosity = 1 "tx" result
-  }
-
-  export interface VerboseTransaction extends Transaction {
-    fee?: number;                   //  (numeric) The transaction fee in BTC, omitted if block undo data is not available
-  }
-
-  export interface Vin {
-    txid?: string;                   //  (string) The transaction id
-    vout?: number;                   //  (string)
-    scriptSig?: {                    //  (json object) The script
-      asm: string;                   //  (string) asm
-      hex: string;                   //  (string) hex
-    };
-    sequence: number;                //  (numeric) The script sequence number
-    txinwitness?: string[];          //  (string) hex-encoded witness data
-    coinbase?: string;
-    is_pegin?: boolean;              //  (boolean) Elements peg-in
-  }
-
-  export interface Vout {
-    value: number;                   //  (numeric) The value in BTC
-    n: number;                       //  (numeric) index
-    asset?: string;                  //  (string) Elements asset id
-    scriptPubKey: {                  //  (json object)
-      asm: string;                   //  (string) the asm
-      hex: string;                   //  (string) the hex
-      reqSigs?: number;              //  (numeric) The required sigs
-      type: string;                  //  (string) The type, eg 'pubkeyhash'
-      address?: string;              //  (string) bitcoin address
-      addresses?: string[];           //  (string) bitcoin addresses
-      pegout_chain?: string;         //  (string) Elements peg-out chain
-      pegout_addresses?: string[];   //  (string) Elements peg-out addresses
-    };
-  }
-
-  export interface AddressInformation {
-    isvalid: boolean;                //  (boolean) If the address is valid or not. If not, this is the only property returned.
-    isvalid_parent?: boolean;        //  (boolean) Elements only
-    address: string;                 //  (string) The bitcoin address validated
-    scriptPubKey: string;            //  (string) The hex-encoded scriptPubKey generated by the address
-    isscript: boolean;               //  (boolean) If the key is a script
-    iswitness: boolean;              //  (boolean) If the address is a witness
-    witness_version?: number;        //  (numeric, optional) The version number of the witness program
-    witness_program: string;         //  (string, optional) The hex value of the witness program
-    confidential_key?: string;       //  (string) Elements only
-    unconfidential?: string;         //  (string) Elements only
-  }
-
-  export interface ChainTips {
-    height: number;                  //  (numeric) height of the chain tip
-    hash: string;                    //  (string) block hash of the tip
-    branchlen: number;               //  (numeric) zero for main chain, otherwise length of branch connecting the tip to the main chain
-    status: 'invalid' | 'headers-only' | 'valid-headers' | 'valid-fork' | 'active';
-  }
-
-  export interface BlockchainInfo {
-    chain: number;                   // (string) current network name as defined in BIP70 (main, test, regtest)
-    blocks: number;                  // (numeric) the current number of blocks processed in the server
-    headers: number;                 // (numeric) the current number of headers we have validated
-    bestblockhash: string,           // (string) the hash of the currently best block
-    difficulty: number;              // (numeric) the current difficulty
-    mediantime: number;              // (numeric) median time for the current best block
-    verificationprogress: number;    // (numeric) estimate of verification progress [0..1]
-    initialblockdownload: boolean;   // (bool) (debug information) estimate of whether this node is in Initial Block Download mode.
-    chainwork: string                // (string) total amount of work in active chain, in hexadecimal
-    size_on_disk: number;            // (numeric) the estimated size of the block and undo files on disk
-    pruned: number;                  // (boolean) if the blocks are subject to pruning
-    pruneheight: number;             // (numeric) lowest-height complete block stored (only present if pruning is enabled)
-    automatic_pruning: number;       // (boolean) whether automatic pruning is enabled (only present if pruning is enabled)
-    prune_target_size: number;       // (numeric) the target size used by pruning (only present if automatic pruning is enabled)
-    softforks: SoftFork[];           // (array) status of softforks in progress
-    bip9_softforks: { [name: string]: Bip9SoftForks[] } // (object) status of BIP9 softforks in progress
-    warnings: string;                // (string) any network and blockchain warnings.
-  }
-
-  interface SoftFork {
-    id: string;                      // (string) name of softfork
-    version: number;                 // (numeric) block version
-    reject: {                        // (object) progress toward rejecting pre-softfork blocks
-      status: boolean;               // (boolean) true if threshold reached
-    },
-  }
-  interface Bip9SoftForks {
-    status: number;                  // (string) one of defined, started, locked_in, active, failed
-    bit: number;                     // (numeric) the bit (0-28) in the block version field used to signal this softfork (only for started status)
-    startTime: number;               // (numeric) the minimum median time past of a block at which the bit gains its meaning
-    timeout: number;                 // (numeric) the median time past of a block at which the deployment is considered failed if not yet locked in
-    since: number;                   // (numeric) height of the first block to which the status applies
-    statistics: {                    // (object) numeric statistics about BIP9 signalling for a softfork (only for started status)
-      period: number;                // (numeric) the length in blocks of the BIP9 signalling period 
-      threshold: number;             // (numeric) the number of blocks with the version bit set required to activate the feature 
-      elapsed: number;               // (numeric) the number of blocks elapsed since the beginning of the current period 
-      count: number;                 // (numeric) the number of blocks with the version bit set in the current period 
-      possible: boolean;             // (boolean) returns false if there are not enough blocks left in this period to pass activation threshold 
-    }
-  }
-
-  export interface BlockStats {
-    "avgfee": number;
-    "avgfeerate": number;
-    "avgtxsize": number;
-    "blockhash": string;
-    "feerate_percentiles": [number, number, number, number, number];
-    "height": number;
-    "ins": number;
-    "maxfee": number;
-    "maxfeerate": number;
-    "maxtxsize": number;
-    "medianfee": number;
-    "mediantime": number;
-    "mediantxsize": number;
-    "minfee": number;
-    "minfeerate": number;
-    "mintxsize": number;
-    "outs": number;
-    "subsidy": number;
-    "swtotal_size": number;
-    "swtotal_weight": number;
-    "swtxs": number;
-    "time": number;
-    "total_out": number;
-    "total_size": number;
-    "total_weight": number;
-    "totalfee": number;
-    "txs": number;
-    "utxo_increase": number;
-    "utxo_size_inc": number;
-  }
-}

backend/src/api/bitcoin/bitcoin-api.ts

@@ -1,426 +0,0 @@
-import * as bitcoinjs from 'bitcoinjs-lib';
-import { AbstractBitcoinApi } from './bitcoin-api-abstract-factory';
-import { IBitcoinApi } from './bitcoin-api.interface';
-import { IEsploraApi } from './esplora-api.interface';
-import blocks from '../blocks';
-import mempool from '../mempool';
-import { TransactionExtended } from '../../mempool.interfaces';
-
-class BitcoinApi implements AbstractBitcoinApi {
-  private rawMempoolCache: IBitcoinApi.RawMempool | null = null;
-  protected bitcoindClient: any;
-
-  constructor(bitcoinClient: any) {
-    this.bitcoindClient = bitcoinClient;
-  }
-
-  static convertBlock(block: IBitcoinApi.Block): IEsploraApi.Block {
-    return {
-      id: block.hash,
-      height: block.height,
-      version: block.version,
-      timestamp: block.time,
-      bits: parseInt(block.bits, 16),
-      nonce: block.nonce,
-      difficulty: block.difficulty,
-      merkle_root: block.merkleroot,
-      tx_count: block.nTx,
-      size: block.size,
-      weight: block.weight,
-      previousblockhash: block.previousblockhash,
-      mediantime: block.mediantime,
-    };
-  }
-
-
-  $getRawTransaction(txId: string, skipConversion = false, addPrevout = false, lazyPrevouts = false): Promise<IEsploraApi.Transaction> {
-    // If the transaction is in the mempool we already converted and fetched the fee. Only prevouts are missing
-    const txInMempool = mempool.getMempool()[txId];
-    if (txInMempool && addPrevout) {
-      return this.$addPrevouts(txInMempool);
-    }
-
-    return this.bitcoindClient.getRawTransaction(txId, true)
-      .then((transaction: IBitcoinApi.Transaction) => {
-        if (skipConversion) {
-          transaction.vout.forEach((vout) => {
-            vout.value = Math.round(vout.value * 100000000);
-          });
-          return transaction;
-        }
-        return this.$convertTransaction(transaction, addPrevout, lazyPrevouts);
-      })
-      .catch((e: Error) => {
-        if (e.message.startsWith('The genesis block coinbase')) {
-          return this.$returnCoinbaseTransaction();
-        }
-        throw e;
-      });
-  }
-
-  $getTransactionHex(txId: string): Promise<string> {
-    return this.$getRawTransaction(txId, true)
-      .then((tx) => tx.hex || '');
-  }
-
-  $getBlockHeightTip(): Promise<number> {
-    return this.bitcoindClient.getChainTips()
-      .then((result: IBitcoinApi.ChainTips[]) => {
-        return result.find(tip => tip.status === 'active')!.height;
-      });
-  }
-
-  $getBlockHashTip(): Promise<string> {
-    return this.bitcoindClient.getChainTips()
-      .then((result: IBitcoinApi.ChainTips[]) => {
-        return result.find(tip => tip.status === 'active')!.hash;
-      });
-  }
-
-  $getTxIdsForBlock(hash: string): Promise<string[]> {
-    return this.bitcoindClient.getBlock(hash, 1)
-      .then((rpcBlock: IBitcoinApi.Block) => rpcBlock.tx);
-  }
-
-  $getRawBlock(hash: string): Promise<Buffer> {
-    return this.bitcoindClient.getBlock(hash, 0)
-      .then((raw: string) => Buffer.from(raw, "hex"));
-  }
-
-  $getBlockHash(height: number): Promise<string> {
-    return this.bitcoindClient.getBlockHash(height);
-  }
-
-  $getBlockHeader(hash: string): Promise<string> {
-    return this.bitcoindClient.getBlockHeader(hash, false);
-  }
-
-  async $getBlock(hash: string): Promise<IEsploraApi.Block> {
-    const foundBlock = blocks.getBlocks().find((block) => block.id === hash);
-    if (foundBlock) {
-      return foundBlock;
-    }
-
-    return this.bitcoindClient.getBlock(hash)
-      .then((block: IBitcoinApi.Block) => BitcoinApi.convertBlock(block));
-  }
-
-  $getAddress(address: string): Promise<IEsploraApi.Address> {
-    throw new Error('Method getAddress not supported by the Bitcoin RPC API.');
-  }
-
-  $getAddressTransactions(address: string, lastSeenTxId: string): Promise<IEsploraApi.Transaction[]> {
-    throw new Error('Method getAddressTransactions not supported by the Bitcoin RPC API.');
-  }
-
-  $getRawMempool(): Promise<IEsploraApi.Transaction['txid'][]> {
-    return this.bitcoindClient.getRawMemPool();
-  }
-
-  $getAddressPrefix(prefix: string): string[] {
-    const found: { [address: string]: string } = {};
-    const mp = mempool.getMempool();
-    for (const tx in mp) {
-      for (const vout of mp[tx].vout) {
-        if (vout.scriptpubkey_address.indexOf(prefix) === 0) {
-          found[vout.scriptpubkey_address] = '';
-          if (Object.keys(found).length >= 10) {
-            return Object.keys(found);
-          }
-        }
-      }
-    }
-    return Object.keys(found);
-  }
-
-  $sendRawTransaction(rawTransaction: string): Promise<string> {
-    return this.bitcoindClient.sendRawTransaction(rawTransaction);
-  }
-
-  async $getOutspend(txId: string, vout: number): Promise<IEsploraApi.Outspend> {
-    const txOut = await this.bitcoindClient.getTxOut(txId, vout, false);
-    return {
-      spent: txOut === null,
-      status: {
-        confirmed: true,
-      }
-    };
-  }
-
-  async $getOutspends(txId: string): Promise<IEsploraApi.Outspend[]> {
-    const outSpends: IEsploraApi.Outspend[] = [];
-    const tx = await this.$getRawTransaction(txId, true, false);
-    for (let i = 0; i < tx.vout.length; i++) {
-      if (tx.status && tx.status.block_height === 0) {
-        outSpends.push({
-          spent: false
-        });
-      } else {
-        const txOut = await this.bitcoindClient.getTxOut(txId, i);
-        outSpends.push({
-          spent: txOut === null,
-        });
-      }
-    }
-    return outSpends;
-  }
-
-  async $getBatchedOutspends(txId: string[]): Promise<IEsploraApi.Outspend[][]> {
-    const outspends: IEsploraApi.Outspend[][] = [];
-    for (const tx of txId) {
-      const outspend = await this.$getOutspends(tx);
-      outspends.push(outspend);
-    }
-    return outspends;
-  }
-
-  $getEstimatedHashrate(blockHeight: number): Promise<number> {
-    // 120 is the default block span in Core
-    return this.bitcoindClient.getNetworkHashPs(120, blockHeight);
-  }
-
-  protected async $convertTransaction(transaction: IBitcoinApi.Transaction, addPrevout: boolean, lazyPrevouts = false): Promise<IEsploraApi.Transaction> {
-    let esploraTransaction: IEsploraApi.Transaction = {
-      txid: transaction.txid,
-      version: transaction.version,
-      locktime: transaction.locktime,
-      size: transaction.size,
-      weight: transaction.weight,
-      fee: 0,
-      vin: [],
-      vout: [],
-      status: { confirmed: false },
-    };
-
-    esploraTransaction.vout = transaction.vout.map((vout) => {
-      return {
-        value: Math.round(vout.value * 100000000),
-        scriptpubkey: vout.scriptPubKey.hex,
-        scriptpubkey_address: vout.scriptPubKey && vout.scriptPubKey.address ? vout.scriptPubKey.address
-          : vout.scriptPubKey.addresses ? vout.scriptPubKey.addresses[0] : '',
-        scriptpubkey_asm: vout.scriptPubKey.asm ? this.convertScriptSigAsm(vout.scriptPubKey.hex) : '',
-        scriptpubkey_type: this.translateScriptPubKeyType(vout.scriptPubKey.type),
-      };
-    });
-
-    esploraTransaction.vin = transaction.vin.map((vin) => {
-      return {
-        is_coinbase: !!vin.coinbase,
-        prevout: null,
-        scriptsig: vin.scriptSig && vin.scriptSig.hex || vin.coinbase || '',
-        scriptsig_asm: vin.scriptSig && this.convertScriptSigAsm(vin.scriptSig.hex) || '',
-        sequence: vin.sequence,
-        txid: vin.txid || '',
-        vout: vin.vout || 0,
-        witness: vin.txinwitness || [],
-        inner_redeemscript_asm: '',
-        inner_witnessscript_asm: '',
-      };
-    });
-
-    if (transaction.confirmations) {
-      esploraTransaction.status = {
-        confirmed: true,
-        block_height: blocks.getCurrentBlockHeight() - transaction.confirmations + 1,
-        block_hash: transaction.blockhash,
-        block_time: transaction.blocktime,
-      };
-    }
-
-    if (addPrevout) {
-      esploraTransaction = await this.$calculateFeeFromInputs(esploraTransaction, false, lazyPrevouts);
-    } else if (!transaction.confirmations) {
-      esploraTransaction = await this.$appendMempoolFeeData(esploraTransaction);
-    }
-
-    return esploraTransaction;
-  }
-
-  private translateScriptPubKeyType(outputType: string): string {
-    const map = {
-      'pubkey': 'p2pk',
-      'pubkeyhash': 'p2pkh',
-      'scripthash': 'p2sh',
-      'witness_v0_keyhash': 'v0_p2wpkh',
-      'witness_v0_scripthash': 'v0_p2wsh',
-      'witness_v1_taproot': 'v1_p2tr',
-      'nonstandard': 'nonstandard',
-      'multisig': 'multisig',
-      'nulldata': 'op_return'
-    };
-
-    if (map[outputType]) {
-      return map[outputType];
-    } else {
-      return 'unknown';
-    }
-  }
-
-  private async $appendMempoolFeeData(transaction: IEsploraApi.Transaction): Promise<IEsploraApi.Transaction> {
-    if (transaction.fee) {
-      return transaction;
-    }
-    let mempoolEntry: IBitcoinApi.MempoolEntry;
-    if (!mempool.isInSync() && !this.rawMempoolCache) {
-      this.rawMempoolCache = await this.$getRawMempoolVerbose();
-    }
-    if (this.rawMempoolCache && this.rawMempoolCache[transaction.txid]) {
-      mempoolEntry = this.rawMempoolCache[transaction.txid];
-    } else {
-      mempoolEntry = await this.$getMempoolEntry(transaction.txid);
-    }
-    transaction.fee = Math.round(mempoolEntry.fees.base * 100000000);
-    return transaction;
-  }
-
-  protected async $addPrevouts(transaction: TransactionExtended): Promise<TransactionExtended> {
-    for (const vin of transaction.vin) {
-      if (vin.prevout) {
-        continue;
-      }
-      const innerTx = await this.$getRawTransaction(vin.txid, false, false);
-      vin.prevout = innerTx.vout[vin.vout];
-      this.addInnerScriptsToVin(vin);
-    }
-    return transaction;
-  }
-
-  protected $returnCoinbaseTransaction(): Promise<IEsploraApi.Transaction> {
-    return this.bitcoindClient.getBlockHash(0).then((hash: string) =>
-      this.bitcoindClient.getBlock(hash, 2)
-        .then((block: IBitcoinApi.Block) => {
-          return this.$convertTransaction(Object.assign(block.tx[0], {
-            confirmations: blocks.getCurrentBlockHeight() + 1,
-            blocktime: block.time }), false);
-        })
-    );
-  }
-
-  private $getMempoolEntry(txid: string): Promise<IBitcoinApi.MempoolEntry> {
-    return this.bitcoindClient.getMempoolEntry(txid);
-  }
-
-  private $getRawMempoolVerbose(): Promise<IBitcoinApi.RawMempool> {
-    return this.bitcoindClient.getRawMemPool(true);
-  }
-
-
-  private async $calculateFeeFromInputs(transaction: IEsploraApi.Transaction, addPrevout: boolean, lazyPrevouts: boolean): Promise<IEsploraApi.Transaction> {
-    if (transaction.vin[0].is_coinbase) {
-      transaction.fee = 0;
-      return transaction;
-    }
-    let totalIn = 0;
-
-    for (let i = 0; i < transaction.vin.length; i++) {
-      if (lazyPrevouts && i > 12) {
-        transaction.vin[i].lazy = true;
-        continue;
-      }
-      const innerTx = await this.$getRawTransaction(transaction.vin[i].txid, false, false);
-      transaction.vin[i].prevout = innerTx.vout[transaction.vin[i].vout];
-      this.addInnerScriptsToVin(transaction.vin[i]);
-      totalIn += innerTx.vout[transaction.vin[i].vout].value;
-    }
-    if (lazyPrevouts && transaction.vin.length > 12) {
-      transaction.fee = -1;
-    } else {
-      const totalOut = transaction.vout.reduce((p, output) => p + output.value, 0);
-      transaction.fee = parseFloat((totalIn - totalOut).toFixed(8));
-    }
-    return transaction;
-  }
-
-  private convertScriptSigAsm(hex: string): string {
-    const buf = Buffer.from(hex, 'hex');
-
-    const b: string[] = [];
-
-    let i = 0;
-    while (i < buf.length) {
-      const op = buf[i];
-      if (op >= 0x01 && op <= 0x4e) {
-        i++;
-        let push: number;
-        if (op === 0x4c) {
-          push = buf.readUInt8(i);
-          b.push('OP_PUSHDATA1');
-          i += 1;
-        } else if (op === 0x4d) {
-          push = buf.readUInt16LE(i);
-          b.push('OP_PUSHDATA2');
-          i += 2;
-        } else if (op === 0x4e) {
-          push = buf.readUInt32LE(i);
-          b.push('OP_PUSHDATA4');
-          i += 4;
-        } else {
-          push = op;
-          b.push('OP_PUSHBYTES_' + push);
-        }
-
-        const data = buf.slice(i, i + push);
-        if (data.length !== push) {
-          break;
-        }
-
-        b.push(data.toString('hex'));
-        i += data.length;
-      } else {
-        if (op === 0x00) {
-          b.push('OP_0');
-        } else if (op === 0x4f) {
-          b.push('OP_PUSHNUM_NEG1');
-        } else if (op === 0xb1) {
-          b.push('OP_CLTV');
-        } else if (op === 0xb2) {
-          b.push('OP_CSV');
-        } else if (op === 0xba) {
-          b.push('OP_CHECKSIGADD');
-        } else {
-          const opcode = bitcoinjs.script.toASM([ op ]);
-          if (opcode && op < 0xfd) {
-            if (/^OP_(\d+)$/.test(opcode)) {
-              b.push(opcode.replace(/^OP_(\d+)$/, 'OP_PUSHNUM_$1'));
-            } else {
-              b.push(opcode);
-            }
-          } else {
-            b.push('OP_RETURN_' + op);
-          }
-        }
-        i += 1;
-      }
-    }
-
-    return b.join(' ');
-  }
-
-  private addInnerScriptsToVin(vin: IEsploraApi.Vin): void {
-    if (!vin.prevout) {
-      return;
-    }
-
-    if (vin.prevout.scriptpubkey_type === 'p2sh') {
-      const redeemScript = vin.scriptsig_asm.split(' ').reverse()[0];
-      vin.inner_redeemscript_asm = this.convertScriptSigAsm(redeemScript);
-      if (vin.witness && vin.witness.length > 2) {
-        const witnessScript = vin.witness[vin.witness.length - 1];
-        vin.inner_witnessscript_asm = this.convertScriptSigAsm(witnessScript);
-      }
-    }
-
-    if (vin.prevout.scriptpubkey_type === 'v0_p2wsh' && vin.witness) {
-      const witnessScript = vin.witness[vin.witness.length - 1];
-      vin.inner_witnessscript_asm = this.convertScriptSigAsm(witnessScript);
-    }
-
-    if (vin.prevout.scriptpubkey_type === 'v1_p2tr' && vin.witness && vin.witness.length > 1) {
-      const witnessScript = vin.witness[vin.witness.length - 2];
-      vin.inner_witnessscript_asm = this.convertScriptSigAsm(witnessScript);
-    }
-  }
-
-}
-
-export default BitcoinApi;

backend/src/api/bitcoin/bitcoin-client.ts

@@ -1,13 +0,0 @@
-import config from '../../config';
-const bitcoin = require('../../rpc-api/index');
-import { BitcoinRpcCredentials } from './bitcoin-api-abstract-factory';
-
-const nodeRpcCredentials: BitcoinRpcCredentials = {
-  host: config.CORE_RPC.HOST,
-  port: config.CORE_RPC.PORT,
-  user: config.CORE_RPC.USERNAME,
-  pass: config.CORE_RPC.PASSWORD,
-  timeout: 60000,
-};
-
-export default new bitcoin.Client(nodeRpcCredentials);

backend/src/api/bitcoin/bitcoin-second-client.ts

@@ -1,13 +0,0 @@
-import config from '../../config';
-const bitcoin = require('../../rpc-api/index');
-import { BitcoinRpcCredentials } from './bitcoin-api-abstract-factory';
-
-const nodeRpcCredentials: BitcoinRpcCredentials = {
-  host: config.SECOND_CORE_RPC.HOST,
-  port: config.SECOND_CORE_RPC.PORT,
-  user: config.SECOND_CORE_RPC.USERNAME,
-  pass: config.SECOND_CORE_RPC.PASSWORD,
-  timeout: 60000,
-};
-
-export default new bitcoin.Client(nodeRpcCredentials);

backend/src/api/bitcoin/bitcoin.routes.ts

@@ -1,718 +0,0 @@
-import { Application, Request, Response } from 'express';
-import axios from 'axios';
-import * as bitcoinjs from 'bitcoinjs-lib';
-import config from '../../config';
-import websocketHandler from '../websocket-handler';
-import mempool from '../mempool';
-import feeApi from '../fee-api';
-import mempoolBlocks from '../mempool-blocks';
-import bitcoinApi, { bitcoinCoreApi } from './bitcoin-api-factory';
-import { Common } from '../common';
-import backendInfo from '../backend-info';
-import transactionUtils from '../transaction-utils';
-import { IEsploraApi } from './esplora-api.interface';
-import loadingIndicators from '../loading-indicators';
-import { TransactionExtended } from '../../mempool.interfaces';
-import logger from '../../logger';
-import blocks from '../blocks';
-import bitcoinClient from './bitcoin-client';
-import difficultyAdjustment from '../difficulty-adjustment';
-import transactionRepository from '../../repositories/TransactionRepository';
-import rbfCache from '../rbf-cache';
-
-class BitcoinRoutes {
-  public initRoutes(app: Application) {
-    app
-      .get(config.MEMPOOL.API_URL_PREFIX + 'transaction-times', this.getTransactionTimes)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'outspends', this.$getBatchedOutspends)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'cpfp/:txId', this.$getCpfpInfo)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'difficulty-adjustment', this.getDifficultyChange)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'fees/recommended', this.getRecommendedFees)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'fees/mempool-blocks', this.getMempoolBlocks)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'backend-info', this.getBackendInfo)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'init-data', this.getInitData)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'validate-address/:address', this.validateAddress)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'tx/:txId/replaces', this.getRbfHistory)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'tx/:txId/cached', this.getCachedTx)
-      .post(config.MEMPOOL.API_URL_PREFIX + 'tx/push', this.$postTransactionForm)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'donations', async (req, res) => {
-        try {
-          const response = await axios.get(`${config.EXTERNAL_DATA_SERVER.MEMPOOL_API}/donations`, { responseType: 'stream', timeout: 10000 });
-          response.data.pipe(res);
-        } catch (e) {
-          res.status(500).end();
-        }
-      })
-      .get(config.MEMPOOL.API_URL_PREFIX + 'donations/images/:id', async (req, res) => {
-        try {
-          const response = await axios.get(`${config.EXTERNAL_DATA_SERVER.MEMPOOL_API}/donations/images/${req.params.id}`, {
-            responseType: 'stream', timeout: 10000
-          });
-          response.data.pipe(res);
-        } catch (e) {
-          res.status(500).end();
-        }
-      })
-      .get(config.MEMPOOL.API_URL_PREFIX + 'contributors', async (req, res) => {
-        try {
-          const response = await axios.get(`${config.EXTERNAL_DATA_SERVER.MEMPOOL_API}/contributors`, { responseType: 'stream', timeout: 10000 });
-          response.data.pipe(res);
-        } catch (e) {
-          res.status(500).end();
-        }
-      })
-      .get(config.MEMPOOL.API_URL_PREFIX + 'contributors/images/:id', async (req, res) => {
-        try {
-          const response = await axios.get(`${config.EXTERNAL_DATA_SERVER.MEMPOOL_API}/contributors/images/${req.params.id}`, {
-            responseType: 'stream', timeout: 10000
-          });
-          response.data.pipe(res);
-        } catch (e) {
-          res.status(500).end();
-        }
-      })
-      .get(config.MEMPOOL.API_URL_PREFIX + 'translators', async (req, res) => {
-        try {
-          const response = await axios.get(`${config.EXTERNAL_DATA_SERVER.MEMPOOL_API}/translators`, { responseType: 'stream', timeout: 10000 });
-          response.data.pipe(res);
-        } catch (e) {
-          res.status(500).end();
-        }
-      })
-      .get(config.MEMPOOL.API_URL_PREFIX + 'translators/images/:id', async (req, res) => {
-        try {
-          const response = await axios.get(`${config.EXTERNAL_DATA_SERVER.MEMPOOL_API}/translators/images/${req.params.id}`, {
-            responseType: 'stream', timeout: 10000
-          });
-          response.data.pipe(res);
-        } catch (e) {
-          res.status(500).end();
-        }
-      })
-      .get(config.MEMPOOL.API_URL_PREFIX + 'blocks', this.getBlocks.bind(this))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'blocks/:height', this.getBlocks.bind(this))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash', this.getBlock)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/summary', this.getStrippedBlockTransactions)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/audit-summary', this.getBlockAuditSummary)
-      .post(config.MEMPOOL.API_URL_PREFIX + 'psbt/addparents', this.postPsbtCompletion)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'blocks-bulk/:from', this.getBlocksByBulk.bind(this))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'blocks-bulk/:from/:to', this.getBlocksByBulk.bind(this))
-      ;
-
-      if (config.MEMPOOL.BACKEND !== 'esplora') {
-        app
-          .get(config.MEMPOOL.API_URL_PREFIX + 'mempool', this.getMempool)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'mempool/txids', this.getMempoolTxIds)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'mempool/recent', this.getRecentMempoolTransactions)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'tx/:txId', this.getTransaction)
-          .post(config.MEMPOOL.API_URL_PREFIX + 'tx', this.$postTransaction)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'tx/:txId/hex', this.getRawTransaction)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'tx/:txId/status', this.getTransactionStatus)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'tx/:txId/outspends', this.getTransactionOutspends)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/header', this.getBlockHeader)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'blocks/tip/height', this.getBlockTipHeight)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'blocks/tip/hash', this.getBlockTipHash)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/raw', this.getRawBlock)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/txids', this.getTxIdsForBlock)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/txs', this.getBlockTransactions)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/txs/:index', this.getBlockTransactions)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'block-height/:height', this.getBlockHeight)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'address/:address', this.getAddress)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'address/:address/txs', this.getAddressTransactions)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'address/:address/txs/chain/:txId', this.getAddressTransactions)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'address-prefix/:prefix', this.getAddressPrefix)
-          ;
-      }
-  }
-
-
-  private getInitData(req: Request, res: Response) {
-    try {
-      const result = websocketHandler.getInitData();
-      res.json(result);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private getRecommendedFees(req: Request, res: Response) {
-    if (!mempool.isInSync()) {
-      res.statusCode = 503;
-      res.send('Service Unavailable');
-      return;
-    }
-    const result = feeApi.getRecommendedFee();
-    res.json(result);
-  }
-
-  private getMempoolBlocks(req: Request, res: Response) {
-    try {
-      const result = mempoolBlocks.getMempoolBlocks();
-      res.json(result);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private getTransactionTimes(req: Request, res: Response) {
-    if (!Array.isArray(req.query.txId)) {
-      res.status(500).send('Not an array');
-      return;
-    }
-    const txIds: string[] = [];
-    for (const _txId in req.query.txId) {
-      if (typeof req.query.txId[_txId] === 'string') {
-        txIds.push(req.query.txId[_txId].toString());
-      }
-    }
-
-    const times = mempool.getFirstSeenForTransactions(txIds);
-    res.json(times);
-  }
-
-  private async $getBatchedOutspends(req: Request, res: Response) {
-    if (!Array.isArray(req.query.txId)) {
-      res.status(500).send('Not an array');
-      return;
-    }
-    if (req.query.txId.length > 50) {
-      res.status(400).send('Too many txids requested');
-      return;
-    }
-    const txIds: string[] = [];
-    for (const _txId in req.query.txId) {
-      if (typeof req.query.txId[_txId] === 'string') {
-        txIds.push(req.query.txId[_txId].toString());
-      }
-    }
-
-    try {
-      const batchedOutspends = await bitcoinApi.$getBatchedOutspends(txIds);
-      res.json(batchedOutspends);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getCpfpInfo(req: Request, res: Response) {
-    if (!/^[a-fA-F0-9]{64}$/.test(req.params.txId)) {
-      res.status(501).send(`Invalid transaction ID.`);
-      return;
-    }
-
-    const tx = mempool.getMempool()[req.params.txId];
-    if (tx) {
-      if (tx?.cpfpChecked) {
-        res.json({
-          ancestors: tx.ancestors,
-          bestDescendant: tx.bestDescendant || null,
-          descendants: tx.descendants || null,
-          effectiveFeePerVsize: tx.effectiveFeePerVsize || null,
-        });
-        return;
-      }
-
-      const cpfpInfo = Common.setRelativesAndGetCpfpInfo(tx, mempool.getMempool());
-
-      res.json(cpfpInfo);
-      return;
-    } else {
-      let cpfpInfo;
-      if (config.DATABASE.ENABLED) {
-        cpfpInfo = await transactionRepository.$getCpfpInfo(req.params.txId);
-      }
-      if (cpfpInfo) {
-        res.json(cpfpInfo);
-        return;
-      } else {
-        res.json({
-          ancestors: []
-        });
-        return;
-      }
-    }
-  }
-
-  private getBackendInfo(req: Request, res: Response) {
-    res.json(backendInfo.getBackendInfo());
-  }
-
-  private async getTransaction(req: Request, res: Response) {
-    try {
-      const transaction = await transactionUtils.$getTransactionExtended(req.params.txId, true);
-      res.json(transaction);
-    } catch (e) {
-      let statusCode = 500;
-      if (e instanceof Error && e instanceof Error && e.message && e.message.indexOf('No such mempool or blockchain transaction') > -1) {
-        statusCode = 404;
-      }
-      res.status(statusCode).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getRawTransaction(req: Request, res: Response) {
-    try {
-      const transaction: IEsploraApi.Transaction = await bitcoinApi.$getRawTransaction(req.params.txId, true);
-      res.setHeader('content-type', 'text/plain');
-      res.send(transaction.hex);
-    } catch (e) {
-      let statusCode = 500;
-      if (e instanceof Error && e.message && e.message.indexOf('No such mempool or blockchain transaction') > -1) {
-        statusCode = 404;
-      }
-      res.status(statusCode).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  /**
-   * Takes the PSBT as text/plain body, parses it, and adds the full
-   * parent transaction to each input that doesn't already have it.
-   * This is used for BTCPayServer / Trezor users which need access to
-   * the full parent transaction even with segwit inputs.
-   * It will respond with a text/plain PSBT in the same format (hex|base64).
-   */
-  private async postPsbtCompletion(req: Request, res: Response): Promise<void> {
-    res.setHeader('content-type', 'text/plain');
-    const notFoundError = `Couldn't get transaction hex for parent of input`;
-    try {
-      let psbt: bitcoinjs.Psbt;
-      let format: 'hex' | 'base64';
-      let isModified = false;
-      try {
-        psbt = bitcoinjs.Psbt.fromBase64(req.body);
-        format = 'base64';
-      } catch (e1) {
-        try {
-          psbt = bitcoinjs.Psbt.fromHex(req.body);
-          format = 'hex';
-        } catch (e2) {
-          throw new Error(`Unable to parse PSBT`);
-        }
-      }
-      for (const [index, input] of psbt.data.inputs.entries()) {
-        if (!input.nonWitnessUtxo) {
-          // Buffer.from ensures it won't be modified in place by reverse()
-          const txid = Buffer.from(psbt.txInputs[index].hash)
-            .reverse()
-            .toString('hex');
-
-          let transactionHex: string;
-          // If missing transaction, return 404 status error
-          try {
-            transactionHex = await bitcoinApi.$getTransactionHex(txid);
-            if (!transactionHex) {
-              throw new Error('');
-            }
-          } catch (err) {
-            throw new Error(`${notFoundError} #${index} @ ${txid}`);
-          }
-
-          psbt.updateInput(index, {
-            nonWitnessUtxo: Buffer.from(transactionHex, 'hex'),
-          });
-          if (!isModified) {
-            isModified = true;
-          }
-        }
-      }
-      if (isModified) {
-        res.send(format === 'hex' ? psbt.toHex() : psbt.toBase64());
-      } else {
-        // Not modified
-        // 422 Unprocessable Entity
-        // https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/422
-        res.status(422).send(`Psbt had no missing nonWitnessUtxos.`);
-      }
-    } catch (e: any) {
-      if (e instanceof Error && new RegExp(notFoundError).test(e.message)) {
-        res.status(404).send(e.message);
-      } else {
-        res.status(500).send(e instanceof Error ? e.message : e);
-      }
-    }
-  }
-
-  private async getTransactionStatus(req: Request, res: Response) {
-    try {
-      const transaction = await transactionUtils.$getTransactionExtended(req.params.txId, true);
-      res.json(transaction.status);
-    } catch (e) {
-      let statusCode = 500;
-      if (e instanceof Error && e.message && e.message.indexOf('No such mempool or blockchain transaction') > -1) {
-        statusCode = 404;
-      }
-      res.status(statusCode).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getStrippedBlockTransactions(req: Request, res: Response) {
-    try {
-      const transactions = await blocks.$getStrippedBlockTransactions(req.params.hash);
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 3600 * 24 * 30).toUTCString());
-      res.json(transactions);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getBlock(req: Request, res: Response) {
-    try {
-      const block = await blocks.$getBlock(req.params.hash);
-
-      const blockAge = new Date().getTime() / 1000 - block.timestamp;
-      const day = 24 * 3600;
-      let cacheDuration;
-      if (blockAge > 365 * day) {
-        cacheDuration = 30 * day;
-      } else if (blockAge > 30 * day) {
-        cacheDuration = 10 * day;
-      } else {
-        cacheDuration = 600
-      }
-
-      res.setHeader('Expires', new Date(Date.now() + 1000 * cacheDuration).toUTCString());
-      res.json(block);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getBlockHeader(req: Request, res: Response) {
-    try {
-      const blockHeader = await bitcoinApi.$getBlockHeader(req.params.hash);
-      res.setHeader('content-type', 'text/plain');
-      res.send(blockHeader);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getBlockAuditSummary(req: Request, res: Response) {
-    try {
-      const transactions = await blocks.$getBlockAuditSummary(req.params.hash);
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 3600 * 24 * 30).toUTCString());
-      res.json(transactions);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getBlocks(req: Request, res: Response) {
-    try {
-      if (['mainnet', 'testnet', 'signet'].includes(config.MEMPOOL.NETWORK)) { // Bitcoin
-        const height = req.params.height === undefined ? undefined : parseInt(req.params.height, 10);
-        res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-        res.json(await blocks.$getBlocks(height, 15));
-      } else { // Liquid, Bisq
-        return await this.getLegacyBlocks(req, res);
-      }
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getBlocksByBulk(req: Request, res: Response) {
-    try {
-      if (['mainnet', 'testnet', 'signet'].includes(config.MEMPOOL.NETWORK) === false) { // Liquid, Bisq - Not implemented
-        return res.status(404).send(`This API is only available for Bitcoin networks`);
-      }
-      if (config.MEMPOOL.MAX_BLOCKS_BULK_QUERY <= 0) {
-        return res.status(404).send(`This API is disabled. Set config.MEMPOOL.MAX_BLOCKS_BULK_QUERY to a positive number to enable it.`);
-      }
-      if (!Common.indexingEnabled()) {
-        return res.status(404).send(`Indexing is required for this API`);
-      }
-
-      const from = parseInt(req.params.from, 10);
-      if (!req.params.from || from < 0) {
-        return res.status(400).send(`Parameter 'from' must be a block height (integer)`);
-      }
-      const to = req.params.to === undefined ? await bitcoinApi.$getBlockHeightTip() : parseInt(req.params.to, 10);
-      if (to < 0) {
-        return res.status(400).send(`Parameter 'to' must be a block height (integer)`);
-      }
-      if (from > to) {
-        return res.status(400).send(`Parameter 'to' must be a higher block height than 'from'`);
-      }
-      if ((to - from + 1) > config.MEMPOOL.MAX_BLOCKS_BULK_QUERY) {
-        return res.status(400).send(`You can only query ${config.MEMPOOL.MAX_BLOCKS_BULK_QUERY} blocks at once.`);
-      }
-
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(await blocks.$getBlocksBetweenHeight(from, to));
-
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getLegacyBlocks(req: Request, res: Response) {
-    try {
-      const returnBlocks: IEsploraApi.Block[] = [];
-      const tip = blocks.getCurrentBlockHeight();
-      const fromHeight = Math.min(parseInt(req.params.height, 10) || tip, tip);
-
-      // Check if block height exist in local cache to skip the hash lookup
-      const blockByHeight = blocks.getBlocks().find((b) => b.height === fromHeight);
-      let startFromHash: string | null = null;
-      if (blockByHeight) {
-        startFromHash = blockByHeight.id;
-      } else {
-        startFromHash = await bitcoinApi.$getBlockHash(fromHeight);
-      }
-
-      let nextHash = startFromHash;
-      for (let i = 0; i < 10 && nextHash; i++) {
-        const localBlock = blocks.getBlocks().find((b) => b.id === nextHash);
-        if (localBlock) {
-          returnBlocks.push(localBlock);
-          nextHash = localBlock.previousblockhash;
-        } else {
-          const block = await bitcoinCoreApi.$getBlock(nextHash);
-          returnBlocks.push(block);
-          nextHash = block.previousblockhash;
-        }
-      }
-
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(returnBlocks);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-  
-  private async getBlockTransactions(req: Request, res: Response) {
-    try {
-      loadingIndicators.setProgress('blocktxs-' + req.params.hash, 0);
-
-      const txIds = await bitcoinApi.$getTxIdsForBlock(req.params.hash);
-      const transactions: TransactionExtended[] = [];
-      const startingIndex = Math.max(0, parseInt(req.params.index || '0', 10));
-
-      const endIndex = Math.min(startingIndex + 10, txIds.length);
-      for (let i = startingIndex; i < endIndex; i++) {
-        try {
-          const transaction = await transactionUtils.$getTransactionExtended(txIds[i], true, true);
-          transactions.push(transaction);
-          loadingIndicators.setProgress('blocktxs-' + req.params.hash, (i - startingIndex + 1) / (endIndex - startingIndex) * 100);
-        } catch (e) {
-          logger.debug('getBlockTransactions error: ' + (e instanceof Error ? e.message : e));
-        }
-      }
-      res.json(transactions);
-    } catch (e) {
-      loadingIndicators.setProgress('blocktxs-' + req.params.hash, 100);
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getBlockHeight(req: Request, res: Response) {
-    try {
-      const blockHash = await bitcoinApi.$getBlockHash(parseInt(req.params.height, 10));
-      res.send(blockHash);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getAddress(req: Request, res: Response) {
-    if (config.MEMPOOL.BACKEND === 'none') {
-      res.status(405).send('Address lookups cannot be used with bitcoind as backend.');
-      return;
-    }
-
-    try {
-      const addressData = await bitcoinApi.$getAddress(req.params.address);
-      res.json(addressData);
-    } catch (e) {
-      if (e instanceof Error && e.message && (e.message.indexOf('too long') > 0 || e.message.indexOf('confirmed status') > 0)) {
-        return res.status(413).send(e instanceof Error ? e.message : e);
-      }
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getAddressTransactions(req: Request, res: Response) {
-    if (config.MEMPOOL.BACKEND === 'none') {
-      res.status(405).send('Address lookups cannot be used with bitcoind as backend.');
-      return;
-    }
-
-    try {
-      const transactions = await bitcoinApi.$getAddressTransactions(req.params.address, req.params.txId);
-      res.json(transactions);
-    } catch (e) {
-      if (e instanceof Error && e.message && (e.message.indexOf('too long') > 0 || e.message.indexOf('confirmed status') > 0)) {
-        return res.status(413).send(e instanceof Error ? e.message : e);
-      }
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getAdressTxChain(req: Request, res: Response) {
-    res.status(501).send('Not implemented');
-  }
-
-  private async getAddressPrefix(req: Request, res: Response) {
-    try {
-      const blockHash = await bitcoinApi.$getAddressPrefix(req.params.prefix);
-      res.send(blockHash);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getRecentMempoolTransactions(req: Request, res: Response) {
-    const latestTransactions = Object.entries(mempool.getMempool())
-      .sort((a, b) => (b[1].firstSeen || 0) - (a[1].firstSeen || 0))
-      .slice(0, 10).map((tx) => Common.stripTransaction(tx[1]));
-
-    res.json(latestTransactions);
-  }
-
-  private async getMempool(req: Request, res: Response) {
-    const info = mempool.getMempoolInfo();
-    res.json({
-      count: info.size,
-      vsize: info.bytes,
-      total_fee: info.total_fee * 1e8,
-      fee_histogram: []
-    });
-  }
-
-  private async getMempoolTxIds(req: Request, res: Response) {
-    try {
-      const rawMempool = await bitcoinApi.$getRawMempool();
-      res.send(rawMempool);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getBlockTipHeight(req: Request, res: Response) {
-    try {
-      const result = await bitcoinApi.$getBlockHeightTip();
-      res.json(result);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getBlockTipHash(req: Request, res: Response) {
-    try {
-      const result = await bitcoinApi.$getBlockHashTip();
-      res.setHeader('content-type', 'text/plain');
-      res.send(result);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getRawBlock(req: Request, res: Response) {
-    try {
-      const result = await bitcoinApi.$getRawBlock(req.params.hash);
-      res.setHeader('content-type', 'application/octet-stream');
-      res.send(result);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getTxIdsForBlock(req: Request, res: Response) {
-    try {
-      const result = await bitcoinApi.$getTxIdsForBlock(req.params.hash);
-      res.json(result);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async validateAddress(req: Request, res: Response) {
-    try {
-      const result = await bitcoinClient.validateAddress(req.params.address);
-      res.json(result);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getRbfHistory(req: Request, res: Response) {
-    try {
-      const result = rbfCache.getReplaces(req.params.txId);
-      res.json(result || []);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getCachedTx(req: Request, res: Response) {
-    try {
-      const result = rbfCache.getTx(req.params.txId);
-      if (result) {
-        res.json(result);
-      } else {
-        res.status(204).send();
-      }
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getTransactionOutspends(req: Request, res: Response) {
-    try {
-      const result = await bitcoinApi.$getOutspends(req.params.txId);
-      res.json(result);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private getDifficultyChange(req: Request, res: Response) {
-    try {
-      const da = difficultyAdjustment.getDifficultyAdjustment();
-      if (da) {
-        res.json(da);
-      } else {
-        res.status(503).send(`Service Temporarily Unavailable`);
-      }
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $postTransaction(req: Request, res: Response) {
-    res.setHeader('content-type', 'text/plain');
-    try {
-      let rawTx;
-      if (typeof req.body === 'object') {
-        rawTx = Object.keys(req.body)[0];
-      } else {
-        rawTx = req.body;
-      }
-      const txIdResult = await bitcoinApi.$sendRawTransaction(rawTx);
-      res.send(txIdResult);
-    } catch (e: any) {
-      res.status(400).send(e.message && e.code ? 'sendrawtransaction RPC error: ' + JSON.stringify({ code: e.code, message: e.message })
-        : (e.message || 'Error'));
-    }
-  }
-
-  private async $postTransactionForm(req: Request, res: Response) {
-    res.setHeader('content-type', 'text/plain');
-    const matches = /tx=([a-z0-9]+)/.exec(req.body);
-    let txHex = '';
-    if (matches && matches[1]) {
-      txHex = matches[1];
-    }
-    try {
-      const txIdResult = await bitcoinClient.sendRawTransaction(txHex);
-      res.send(txIdResult);
-    } catch (e: any) {
-      res.status(400).send(e.message && e.code ? 'sendrawtransaction RPC error: ' + JSON.stringify({ code: e.code, message: e.message })
-        : (e.message || 'Error'));
-    }
-  }
-
-}
-
-export default new BitcoinRoutes();

backend/src/api/bitcoin/bitcoind-api.ts

@@ -0,0 +1,110 @@
+const config = require('../../../mempool-config.json');
+import * as bitcoin from 'bitcoin';
+import { ITransaction, IMempoolInfo, IBlock } from '../../interfaces';
+import { AbstractBitcoinApi } from './bitcoin-api-abstract-factory';
+
+class BitcoindApi implements AbstractBitcoinApi {
+  client: any;
+
+  constructor() {
+    this.client = new bitcoin.Client({
+      host: config.BITCOIN_NODE_HOST,
+      port: config.BITCOIN_NODE_PORT,
+      user: config.BITCOIN_NODE_USER,
+      pass: config.BITCOIN_NODE_PASS,
+    });
+  }
+
+  getMempoolInfo(): Promise<IMempoolInfo> {
+    return new Promise((resolve, reject) => {
+      this.client.getMempoolInfo((err: Error, mempoolInfo: any) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(mempoolInfo);
+      });
+    });
+  }
+
+  getRawMempool(): Promise<ITransaction['txid'][]> {
+    return new Promise((resolve, reject) => {
+      this.client.getRawMemPool((err: Error, transactions: ITransaction['txid'][]) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(transactions);
+      });
+    });
+  }
+
+  getRawTransaction(txId: string): Promise<ITransaction> {
+    return new Promise((resolve, reject) => {
+      this.client.getRawTransaction(txId, true, (err: Error, txData: ITransaction) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(txData);
+      });
+    });
+  }
+
+  getBlockCount(): Promise<number> {
+    return new Promise((resolve, reject) => {
+      this.client.getBlockCount((err: Error, response: number) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(response);
+      });
+    });
+  }
+
+  getBlockAndTransactions(hash: string, verbosity:  1 | 2 = 1): Promise<IBlock> {
+    return new Promise((resolve, reject) => {
+      this.client.getBlock(hash, verbosity, (err: Error, block: IBlock) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(block);
+      });
+    });
+  }
+
+  getBlockHash(height: number): Promise<string> {
+    return new Promise((resolve, reject) => {
+      this.client.getBlockHash(height, (err: Error, response: string) => {
+        if (err) {
+          return reject(err);
+        }
+        resolve(response);
+      });
+    });
+  }
+
+  getBlock(hash: string): Promise<IBlock> {
+    throw new Error('Method not implemented.');
+  }
+  getBlocks(): Promise<string> {
+    throw new Error('Method not implemented.');
+  }
+  getBlocksFromHeight(height: number): Promise<string> {
+    throw new Error('Method not implemented.');
+  }
+  getBlockTransactions(hash: string): Promise<IBlock> {
+    throw new Error('Method not implemented.');
+  }
+  getBlockTransactionsFromIndex(hash: string, index: number): Promise<IBlock> {
+    throw new Error('Method not implemented.');
+  }
+  getAddress(address: string): Promise<IBlock> {
+    throw new Error('Method not implemented.');
+  }
+  getAddressTransactions(address: string): Promise<IBlock> {
+    throw new Error('Method not implemented.');
+  }
+  getAddressTransactionsFromLastSeenTxid(address: string, lastSeenTxid: string): Promise<IBlock> {
+    throw new Error('Method not implemented.');
+  }
+}
+
+export default BitcoindApi;

backend/src/api/bitcoin/electrs-api.ts

@@ -0,0 +1,229 @@
+const config = require('../../../mempool-config.json');
+import { ITransaction, IMempoolInfo, IBlock } from '../../interfaces';
+import { AbstractBitcoinApi } from './bitcoin-api-abstract-factory';
+import * as request from 'request';
+
+class ElectrsApi implements AbstractBitcoinApi {
+
+  constructor() {
+  }
+
+  getMempoolInfo(): Promise<IMempoolInfo> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/mempool', { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else {
+          resolve({
+            size: response.count,
+            bytes: response.vsize,
+          });
+        }
+      });
+    });
+  }
+
+  getRawMempool(): Promise<ITransaction['txid'][]> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/mempool/txids', { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getRawTransaction(txId: string): Promise<ITransaction> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/tx/' + txId, { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else {
+          response.vsize = Math.round(response.weight / 4);
+          response.fee = response.fee / 100000000;
+          response.blockhash = response.status.block_hash;
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getBlockCount(): Promise<number> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/blocks/tip/height', { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getBlockAndTransactions(hash: string): Promise<IBlock> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/block/' + hash, { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else {
+          request(config.ELECTRS_API_URL + '/block/' + hash + '/txids', { json: true, timeout: 10000 }, (err2, res2, response2) => {
+            if (err2) {
+              reject(err2);
+            } else if (res.statusCode !== 200) {
+              reject(response);
+            } else {
+              const block = response;
+              block.hash = hash;
+              block.nTx = block.tx_count;
+              block.time = block.timestamp;
+              block.tx = response2;
+
+              resolve(block);
+            }
+          });
+        }
+      });
+    });
+  }
+
+  getBlockHash(height: number): Promise<string> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/block-height/' + height, { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else  {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getBlocks(): Promise<string> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/blocks', { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else  {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getBlocksFromHeight(height: number): Promise<string> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/blocks/' + height, { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else  {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getBlock(hash: string): Promise<IBlock> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/block/' + hash, { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else  {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getBlockTransactions(hash: string): Promise<IBlock> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/block/' + hash + '/txs', { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else  {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getBlockTransactionsFromIndex(hash: string, index: number): Promise<IBlock> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/block/' + hash + '/txs/' + index, { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else  {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getAddress(address: string): Promise<IBlock> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/address/' + address, { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else  {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getAddressTransactions(address: string): Promise<IBlock> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/address/' + address + '/txs', { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else  {
+          resolve(response);
+        }
+      });
+    });
+  }
+
+  getAddressTransactionsFromLastSeenTxid(address: string, lastSeenTxid: string): Promise<IBlock> {
+    return new Promise((resolve, reject) => {
+      request(config.ELECTRS_API_URL + '/address/' + address + '/txs/chain/' + lastSeenTxid,
+        { json: true, timeout: 10000 }, (err, res, response) => {
+        if (err) {
+          reject(err);
+        } else if (res.statusCode !== 200) {
+          reject(response);
+        } else  {
+          resolve(response);
+        }
+      });
+    });
+  }
+}
+
+export default ElectrsApi;

backend/src/api/bitcoin/electrum-api.interface.ts

@@ -1,12 +0,0 @@
-export namespace IElectrumApi {
-  export interface ScriptHashBalance {
-    confirmed: number;
-    unconfirmed: number;
-  }
-
-  export interface ScriptHashHistory {
-    height: number;
-    tx_hash: string;
-    fee?: number;
-  }
-}

backend/src/api/bitcoin/electrum-api.ts

@@ -1,152 +0,0 @@
-import config from '../../config';
-import Client from '@mempool/electrum-client';
-import { AbstractBitcoinApi } from './bitcoin-api-abstract-factory';
-import { IEsploraApi } from './esplora-api.interface';
-import { IElectrumApi } from './electrum-api.interface';
-import BitcoinApi from './bitcoin-api';
-import logger from '../../logger';
-import crypto from "crypto-js";
-import loadingIndicators from '../loading-indicators';
-import memoryCache from '../memory-cache';
-
-class BitcoindElectrsApi extends BitcoinApi implements AbstractBitcoinApi {
-  private electrumClient: any;
-
-  constructor(bitcoinClient: any) {
-    super(bitcoinClient);
-
-    const electrumConfig = { client: 'mempool-v2', version: '1.4' };
-    const electrumPersistencePolicy = { retryPeriod: 10000, maxRetry: 1000, callback: null };
-
-    const electrumCallbacks = {
-      onConnect: (client, versionInfo) => { logger.info(`Connected to Electrum Server at ${config.ELECTRUM.HOST}:${config.ELECTRUM.PORT} (${JSON.stringify(versionInfo)})`); },
-      onClose: (client) => { logger.info(`Disconnected from Electrum Server at ${config.ELECTRUM.HOST}:${config.ELECTRUM.PORT}`); },
-      onError: (err) => { logger.err(`Electrum error: ${JSON.stringify(err)}`); },
-      onLog: (str) => { logger.debug(str); },
-    };
-
-    this.electrumClient = new Client(
-      config.ELECTRUM.PORT,
-      config.ELECTRUM.HOST,
-      config.ELECTRUM.TLS_ENABLED ? 'tls' : 'tcp',
-      null,
-      electrumCallbacks
-    );
-
-    this.electrumClient.initElectrum(electrumConfig, electrumPersistencePolicy)
-      .then(() => { })
-      .catch((err) => {
-        logger.err(`Error connecting to Electrum Server at ${config.ELECTRUM.HOST}:${config.ELECTRUM.PORT}`);
-      });
-  }
-
-  async $getAddress(address: string): Promise<IEsploraApi.Address> {
-    const addressInfo = await this.bitcoindClient.validateAddress(address);
-    if (!addressInfo || !addressInfo.isvalid) {
-      return ({
-        'address': address,
-        'chain_stats': {
-          'funded_txo_count': 0,
-          'funded_txo_sum': 0,
-          'spent_txo_count': 0,
-          'spent_txo_sum': 0,
-          'tx_count': 0
-        },
-        'mempool_stats': {
-          'funded_txo_count': 0,
-          'funded_txo_sum': 0,
-          'spent_txo_count': 0,
-          'spent_txo_sum': 0,
-          'tx_count': 0
-        }
-      });
-    }
-
-    try {
-      const balance = await this.$getScriptHashBalance(addressInfo.scriptPubKey);
-      const history = await this.$getScriptHashHistory(addressInfo.scriptPubKey);
-
-      const unconfirmed = history.filter((h) => h.fee).length;
-
-      return {
-        'address': addressInfo.address,
-        'chain_stats': {
-          'funded_txo_count': 0,
-          'funded_txo_sum': balance.confirmed ? balance.confirmed : 0,
-          'spent_txo_count': 0,
-          'spent_txo_sum': balance.confirmed < 0 ? balance.confirmed : 0,
-          'tx_count': history.length - unconfirmed,
-        },
-        'mempool_stats': {
-          'funded_txo_count': 0,
-          'funded_txo_sum': balance.unconfirmed > 0 ? balance.unconfirmed : 0,
-          'spent_txo_count': 0,
-          'spent_txo_sum': balance.unconfirmed < 0 ? -balance.unconfirmed : 0,
-          'tx_count': unconfirmed,
-        },
-        'electrum': true,
-      };
-    } catch (e: any) {
-      throw new Error(typeof e === 'string' ? e : e && e.message || e);
-    }
-  }
-
-  async $getAddressTransactions(address: string, lastSeenTxId: string): Promise<IEsploraApi.Transaction[]> {
-    const addressInfo = await this.bitcoindClient.validateAddress(address);
-    if (!addressInfo || !addressInfo.isvalid) {
-      return [];
-    }
-
-    try {
-      loadingIndicators.setProgress('address-' + address, 0);
-
-      const transactions: IEsploraApi.Transaction[] = [];
-      const history = await this.$getScriptHashHistory(addressInfo.scriptPubKey);
-      history.sort((a, b) => (b.height || 9999999) - (a.height || 9999999));
-
-      let startingIndex = 0;
-      if (lastSeenTxId) {
-        const pos = history.findIndex((historicalTx) => historicalTx.tx_hash === lastSeenTxId);
-        if (pos) {
-          startingIndex = pos + 1;
-        }
-      }
-      const endIndex = Math.min(startingIndex + 10, history.length);
-
-      for (let i = startingIndex; i < endIndex; i++) {
-        const tx = await this.$getRawTransaction(history[i].tx_hash, false, true);
-        transactions.push(tx);
-        loadingIndicators.setProgress('address-' + address, (i + 1) / endIndex * 100);
-      }
-
-      return transactions;
-    } catch (e: any) {
-      loadingIndicators.setProgress('address-' + address, 100);
-      throw new Error(typeof e === 'string' ? e : e && e.message || e);
-    }
-  }
-
-  private $getScriptHashBalance(scriptHash: string): Promise<IElectrumApi.ScriptHashBalance> {
-    return this.electrumClient.blockchainScripthash_getBalance(this.encodeScriptHash(scriptHash));
-  }
-
-  private $getScriptHashHistory(scriptHash: string): Promise<IElectrumApi.ScriptHashHistory[]> {
-    const fromCache = memoryCache.get<IElectrumApi.ScriptHashHistory[]>('Scripthash_getHistory', scriptHash);
-    if (fromCache) {
-      return Promise.resolve(fromCache);
-    }
-    return this.electrumClient.blockchainScripthash_getHistory(this.encodeScriptHash(scriptHash))
-      .then((history) => {
-        memoryCache.set('Scripthash_getHistory', scriptHash, history, 2);
-        return history;
-      });
-  }
-
-  private encodeScriptHash(scriptPubKey: string): string {
-    const addrScripthash = crypto.enc.Hex.stringify(crypto.SHA256(crypto.enc.Hex.parse(scriptPubKey)));
-    return addrScripthash!.match(/.{2}/g)!.reverse().join('');
-  }
-
-}
-
-export default BitcoindElectrsApi;

backend/src/api/bitcoin/esplora-api.interface.ts

@@ -1,173 +0,0 @@
-export namespace IEsploraApi {
-  export interface Transaction {
-    txid: string;
-    version: number;
-    locktime: number;
-    size: number;
-    weight: number;
-    fee: number;
-    vin: Vin[];
-    vout: Vout[];
-    status: Status;
-    hex?: string;
-  }
-
-  export interface Recent {
-    txid: string;
-    fee: number;
-    vsize: number;
-    value: number;
-  }
-
-  export interface Vin {
-    txid: string;
-    vout: number;
-    is_coinbase: boolean;
-    scriptsig: string;
-    scriptsig_asm: string;
-    inner_redeemscript_asm: string;
-    inner_witnessscript_asm: string;
-    sequence: any;
-    witness: string[];
-    prevout: Vout | null;
-    // Elements
-    is_pegin?: boolean;
-    issuance?: Issuance;
-    // Custom
-    lazy?: boolean;
-  }
-
-  interface Issuance {
-    asset_id: string;
-    is_reissuance: string;
-    asset_blinding_nonce: string;
-    asset_entropy: string;
-    contract_hash: string;
-    assetamount?: number;
-    assetamountcommitment?: string;
-    tokenamount?: number;
-    tokenamountcommitment?: string;
-  }
-
-  export interface Vout {
-    scriptpubkey: string;
-    scriptpubkey_asm: string;
-    scriptpubkey_type: string;
-    scriptpubkey_address: string;
-    value: number;
-    // Elements
-    valuecommitment?: number;
-    asset?: string;
-    pegout?: Pegout;
-  }
-
-  interface Pegout {
-    genesis_hash: string;
-    scriptpubkey: string;
-    scriptpubkey_asm: string;
-    scriptpubkey_address: string;
-  }
-
-  export interface Status {
-    confirmed: boolean;
-    block_height?: number;
-    block_hash?: string;
-    block_time?: number;
-  }
-
-  export interface Block {
-    id: string;
-    height: number;
-    version: number;
-    timestamp: number;
-    bits: number;
-    nonce: number;
-    difficulty: number;
-    merkle_root: string;
-    tx_count: number;
-    size: number;
-    weight: number;
-    previousblockhash: string;
-    mediantime: number;
-  }
-
-  export interface Address {
-    address: string;
-    chain_stats: ChainStats;
-    mempool_stats: MempoolStats;
-    electrum?: boolean;
-  }
-
-  export interface ChainStats {
-    funded_txo_count: number;
-    funded_txo_sum: number;
-    spent_txo_count: number;
-    spent_txo_sum: number;
-    tx_count: number;
-  }
-
-  export interface MempoolStats {
-    funded_txo_count: number;
-    funded_txo_sum: number;
-    spent_txo_count: number;
-    spent_txo_sum: number;
-    tx_count: number;
-  }
-
-  export interface Outspend {
-    spent: boolean;
-    txid?: string;
-    vin?: number;
-    status?: Status;
-  }
-
-  export interface Asset {
-    asset_id: string;
-    issuance_txin: IssuanceTxin;
-    issuance_prevout: IssuancePrevout;
-    reissuance_token: string;
-    contract_hash: string;
-    status: Status;
-    chain_stats: AssetStats;
-    mempool_stats: AssetStats;
-  }
-
-  export interface AssetExtended extends Asset {
-    name: string;
-    ticker: string;
-    precision: number;
-    entity: Entity;
-    version: number;
-    issuer_pubkey: string;
-  }
-
-  export interface Entity {
-    domain: string;
-  }
-
-  interface IssuanceTxin {
-    txid: string;
-    vin: number;
-  }
-
-  interface IssuancePrevout {
-    txid: string;
-    vout: number;
-  }
-
-  interface AssetStats {
-    tx_count: number;
-    issuance_count: number;
-    issued_amount: number;
-    burned_amount: number;
-    has_blinded_issuances: boolean;
-    reissuance_tokens: number;
-    burned_reissuance_tokens: number;
-    peg_in_count: number;
-    peg_in_amount: number;
-    peg_out_count: number;
-    peg_out_amount: number;
-    burn_count: number;
-  }
-
-}

backend/src/api/bitcoin/esplora-api.ts

@@ -1,104 +0,0 @@
-import config from '../../config';
-import axios, { AxiosRequestConfig } from 'axios';
-import http from 'http';
-import { AbstractBitcoinApi } from './bitcoin-api-abstract-factory';
-import { IEsploraApi } from './esplora-api.interface';
-
-const axiosConnection = axios.create({
-  httpAgent: new http.Agent({ keepAlive: true })
-});
-
-class ElectrsApi implements AbstractBitcoinApi {
-  axiosConfig: AxiosRequestConfig = {
-    timeout: 10000,
-  };
-
-  constructor() { }
-
-  $getRawMempool(): Promise<IEsploraApi.Transaction['txid'][]> {
-    return axiosConnection.get<IEsploraApi.Transaction['txid'][]>(config.ESPLORA.REST_API_URL + '/mempool/txids', this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  $getRawTransaction(txId: string): Promise<IEsploraApi.Transaction> {
-    return axiosConnection.get<IEsploraApi.Transaction>(config.ESPLORA.REST_API_URL + '/tx/' + txId, this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  $getTransactionHex(txId: string): Promise<string> {
-    return axiosConnection.get<string>(config.ESPLORA.REST_API_URL + '/tx/' + txId + '/hex', this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  $getBlockHeightTip(): Promise<number> {
-    return axiosConnection.get<number>(config.ESPLORA.REST_API_URL + '/blocks/tip/height', this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  $getBlockHashTip(): Promise<string> {
-    return axiosConnection.get<string>(config.ESPLORA.REST_API_URL + '/blocks/tip/hash', this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  $getTxIdsForBlock(hash: string): Promise<string[]> {
-    return axiosConnection.get<string[]>(config.ESPLORA.REST_API_URL + '/block/' + hash + '/txids', this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  $getBlockHash(height: number): Promise<string> {
-    return axiosConnection.get<string>(config.ESPLORA.REST_API_URL + '/block-height/' + height, this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  $getBlockHeader(hash: string): Promise<string> {
-    return axiosConnection.get<string>(config.ESPLORA.REST_API_URL + '/block/' + hash + '/header', this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  $getBlock(hash: string): Promise<IEsploraApi.Block> {
-    return axiosConnection.get<IEsploraApi.Block>(config.ESPLORA.REST_API_URL + '/block/' + hash, this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  $getRawBlock(hash: string): Promise<Buffer> {
-    return axiosConnection.get<string>(config.ESPLORA.REST_API_URL + '/block/' + hash + "/raw", { ...this.axiosConfig, responseType: 'arraybuffer' })
-      .then((response) => { return Buffer.from(response.data); });
-  }
-
-  $getAddress(address: string): Promise<IEsploraApi.Address> {
-    throw new Error('Method getAddress not implemented.');
-  }
-
-  $getAddressTransactions(address: string, txId?: string): Promise<IEsploraApi.Transaction[]> {
-    throw new Error('Method getAddressTransactions not implemented.');
-  }
-
-  $getAddressPrefix(prefix: string): string[] {
-    throw new Error('Method not implemented.');
-  }
-
-  $sendRawTransaction(rawTransaction: string): Promise<string> {
-    throw new Error('Method not implemented.');
-  }
-
-  $getOutspend(txId: string, vout: number): Promise<IEsploraApi.Outspend> {
-    return axiosConnection.get<IEsploraApi.Outspend>(config.ESPLORA.REST_API_URL + '/tx/' + txId + '/outspend/' + vout, this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  $getOutspends(txId: string): Promise<IEsploraApi.Outspend[]> {
-    return axiosConnection.get<IEsploraApi.Outspend[]>(config.ESPLORA.REST_API_URL + '/tx/' + txId + '/outspends', this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  async $getBatchedOutspends(txId: string[]): Promise<IEsploraApi.Outspend[][]> {
-    const outspends: IEsploraApi.Outspend[][] = [];
-    for (const tx of txId) {
-      const outspend = await this.$getOutspends(tx);
-      outspends.push(outspend);
-    }
-    return outspends;
-  }
-}
-
-export default ElectrsApi;

backend/src/api/chain-tips.ts

@@ -1,61 +0,0 @@
-import logger from '../logger';
-import bitcoinClient from './bitcoin/bitcoin-client';
-
-export interface ChainTip {
-  height: number;
-  hash: string;
-  branchlen: number;
-  status: 'invalid' | 'active' | 'valid-fork' | 'valid-headers' | 'headers-only';
-};
-
-export interface OrphanedBlock {
-  height: number;
-  hash: string;
-  status: 'valid-fork' | 'valid-headers' | 'headers-only';
-}
-
-class ChainTips {
-  private chainTips: ChainTip[] = [];
-  private orphanedBlocks: OrphanedBlock[] = [];
-
-  public async updateOrphanedBlocks(): Promise<void> {
-    try {
-      this.chainTips = await bitcoinClient.getChainTips();
-      this.orphanedBlocks = [];
-
-      for (const chain of this.chainTips) {
-        if (chain.status === 'valid-fork' || chain.status === 'valid-headers') {
-          let block = await bitcoinClient.getBlock(chain.hash);
-          while (block && block.confirmations === -1) {
-            this.orphanedBlocks.push({
-              height: block.height,
-              hash: block.hash,
-              status: chain.status
-            });
-            block = await bitcoinClient.getBlock(block.previousblockhash);
-          }
-        }
-      }
-
-      logger.debug(`Updated orphaned blocks cache. Found ${this.orphanedBlocks.length} orphaned blocks`);
-    } catch (e) {
-      logger.err(`Cannot get fetch orphaned blocks. Reason: ${e instanceof Error ? e.message : e}`);
-    }
-  }
-
-  public getOrphanedBlocksAtHeight(height: number | undefined): OrphanedBlock[] {
-    if (height === undefined) {
-      return [];
-    }
-
-    const orphans: OrphanedBlock[] = [];
-    for (const block of this.orphanedBlocks) {
-      if (block.height === height) {
-        orphans.push(block);
-      }
-    }
-    return orphans;
-  }
-}
-
-export default new ChainTips();

backend/src/api/common.ts

@@ -1,348 +0,0 @@
-import { CpfpInfo, MempoolBlockWithTransactions, TransactionExtended, TransactionStripped } from '../mempool.interfaces';
-import config from '../config';
-import { NodeSocket } from '../repositories/NodesSocketsRepository';
-import { isIP } from 'net';
-export class Common {
-  static nativeAssetId = config.MEMPOOL.NETWORK === 'liquidtestnet' ?
-    '144c654344aa716d6f3abcc1ca90e5641e4e2a7f633bc09fe3baf64585819a49'
-  : '6f0279e9ed041c3d710a9f57d0c02928416460c4b722ae3457a11eec381c526d';
-  static _isLiquid = config.MEMPOOL.NETWORK === 'liquid' || config.MEMPOOL.NETWORK === 'liquidtestnet';
-
-  static isLiquid(): boolean {
-    return this._isLiquid;
-  }
-
-  static median(numbers: number[]) {
-    let medianNr = 0;
-    const numsLen = numbers.length;
-    if (numsLen % 2 === 0) {
-        medianNr = (numbers[numsLen / 2 - 1] + numbers[numsLen / 2]) / 2;
-    } else {
-        medianNr = numbers[(numsLen - 1) / 2];
-    }
-    return medianNr;
-  }
-
-  static percentile(numbers: number[], percentile: number) {
-    if (percentile === 50) {
-      return this.median(numbers);
-    }
-    const index = Math.ceil(numbers.length * (100 - percentile) * 1e-2);
-    if (index < 0 || index > numbers.length - 1) {
-      return 0;
-    }
-    return numbers[index];
-  }
-
-  static getFeesInRange(transactions: TransactionExtended[], rangeLength: number) {
-    const filtered: TransactionExtended[] = [];
-    let lastValidRate = Infinity;
-    // filter out anomalous fee rates to ensure monotonic range
-    for (const tx of transactions) {
-      if (tx.effectiveFeePerVsize <= lastValidRate) {
-        filtered.push(tx);
-        lastValidRate = tx.effectiveFeePerVsize;
-      }
-    }
-    const arr = [filtered[filtered.length - 1].effectiveFeePerVsize];
-    const chunk = 1 / (rangeLength - 1);
-    let itemsToAdd = rangeLength - 2;
-
-    while (itemsToAdd > 0) {
-      arr.push(filtered[Math.floor(filtered.length * chunk * itemsToAdd)].effectiveFeePerVsize);
-      itemsToAdd--;
-    }
-
-    arr.push(filtered[0].effectiveFeePerVsize);
-    return arr;
-  }
-
-  static findRbfTransactions(added: TransactionExtended[], deleted: TransactionExtended[]): { [txid: string]: TransactionExtended } {
-    const matches: { [txid: string]: TransactionExtended } = {};
-    deleted
-      .forEach((deletedTx) => {
-        const foundMatches = added.find((addedTx) => {
-          // The new tx must, absolutely speaking, pay at least as much fee as the replaced tx.
-          return addedTx.fee > deletedTx.fee
-            // The new transaction must pay more fee per kB than the replaced tx.
-            && addedTx.feePerVsize > deletedTx.feePerVsize
-            // Spends one or more of the same inputs
-            && deletedTx.vin.some((deletedVin) =>
-              addedTx.vin.some((vin) => vin.txid === deletedVin.txid && vin.vout === deletedVin.vout));
-            });
-        if (foundMatches) {
-          matches[deletedTx.txid] = foundMatches;
-        }
-      });
-    return matches;
-  }
-
-  static stripTransaction(tx: TransactionExtended): TransactionStripped {
-    return {
-      txid: tx.txid,
-      fee: tx.fee,
-      vsize: tx.weight / 4,
-      value: tx.vout.reduce((acc, vout) => acc + (vout.value ? vout.value : 0), 0),
-    };
-  }
-
-  static sleep$(ms: number): Promise<void> {
-    return new Promise((resolve) => {
-       setTimeout(() => {
-         resolve();
-       }, ms);
-    });
-  }
-
-  static shuffleArray(array: any[]) {
-    for (let i = array.length - 1; i > 0; i--) {
-        const j = Math.floor(Math.random() * (i + 1));
-        [array[i], array[j]] = [array[j], array[i]];
-    }
-  }
-
-  static setRelativesAndGetCpfpInfo(tx: TransactionExtended, memPool: { [txid: string]: TransactionExtended }): CpfpInfo {
-    const parents = this.findAllParents(tx, memPool);
-    const lowerFeeParents = parents.filter((parent) => parent.feePerVsize < tx.effectiveFeePerVsize);
-
-    let totalWeight = tx.weight + lowerFeeParents.reduce((prev, val) => prev + val.weight, 0);
-    let totalFees = tx.fee + lowerFeeParents.reduce((prev, val) => prev + val.fee, 0);
-
-    tx.ancestors = parents
-      .map((t) => {
-        return {
-          txid: t.txid,
-          weight: t.weight,
-          fee: t.fee,
-        };
-      });
-
-    // Add high (high fee) decendant weight and fees
-    if (tx.bestDescendant) {
-      totalWeight += tx.bestDescendant.weight;
-      totalFees += tx.bestDescendant.fee;
-    }
-
-    tx.effectiveFeePerVsize = Math.max(0, totalFees / (totalWeight / 4));
-    tx.cpfpChecked = true;
-
-    return {
-      ancestors: tx.ancestors,
-      bestDescendant: tx.bestDescendant || null,
-    };
-  }
-
-
-  private static findAllParents(tx: TransactionExtended, memPool: { [txid: string]: TransactionExtended }): TransactionExtended[] {
-    let parents: TransactionExtended[] = [];
-    tx.vin.forEach((parent) => {
-      if (parents.find((p) => p.txid === parent.txid)) {
-        return;
-      }
-
-      const parentTx = memPool[parent.txid];
-      if (parentTx) {
-        if (tx.bestDescendant && tx.bestDescendant.fee / (tx.bestDescendant.weight / 4) > parentTx.feePerVsize) {
-          if (parentTx.bestDescendant && parentTx.bestDescendant.fee < tx.fee + tx.bestDescendant.fee) {
-            parentTx.bestDescendant = {
-              weight: tx.weight + tx.bestDescendant.weight,
-              fee: tx.fee + tx.bestDescendant.fee,
-              txid: tx.txid,
-            };
-          }
-        } else if (tx.feePerVsize > parentTx.feePerVsize) {
-          parentTx.bestDescendant = {
-            weight: tx.weight,
-            fee: tx.fee,
-            txid: tx.txid
-          };
-        }
-        parents.push(parentTx);
-        parents = parents.concat(this.findAllParents(parentTx, memPool));
-      }
-    });
-    return parents;
-  }
-
-  // calculates the ratio of matched transactions to projected transactions by weight
-  static getSimilarity(projectedBlock: MempoolBlockWithTransactions, transactions: TransactionExtended[]): number {
-    let matchedWeight = 0;
-    let projectedWeight = 0;
-    const inBlock = {};
-
-    for (const tx of transactions) {
-      inBlock[tx.txid] = tx;
-    }
-
-    // look for transactions that were expected in the template, but missing from the mined block
-    for (const tx of projectedBlock.transactions) {
-      if (inBlock[tx.txid]) {
-        matchedWeight += tx.vsize * 4;
-      }
-      projectedWeight += tx.vsize * 4;
-    }
-
-    projectedWeight += transactions[0].weight;
-    matchedWeight += transactions[0].weight;
-
-    return projectedWeight ? matchedWeight / projectedWeight : 1;
-  }
-
-  static getSqlInterval(interval: string | null): string | null {
-    switch (interval) {
-      case '24h': return '1 DAY';
-      case '3d': return '3 DAY';
-      case '1w': return '1 WEEK';
-      case '1m': return '1 MONTH';
-      case '3m': return '3 MONTH';
-      case '6m': return '6 MONTH';
-      case '1y': return '1 YEAR';
-      case '2y': return '2 YEAR';
-      case '3y': return '3 YEAR';
-      case '4y': return '4 YEAR';
-      default: return null;
-    }
-  }
-
-  static indexingEnabled(): boolean {
-    return (
-      ['mainnet', 'testnet', 'signet'].includes(config.MEMPOOL.NETWORK) &&
-      config.DATABASE.ENABLED === true &&
-      config.MEMPOOL.INDEXING_BLOCKS_AMOUNT !== 0
-    );
-  }
-
-  static blocksSummariesIndexingEnabled(): boolean {
-    return (
-      Common.indexingEnabled() &&
-      config.MEMPOOL.BLOCKS_SUMMARIES_INDEXING === true
-    );
-  }
-
-  static cpfpIndexingEnabled(): boolean {
-    return (
-      Common.indexingEnabled() &&
-      config.MEMPOOL.CPFP_INDEXING === true
-    );
-  }
-
-  static setDateMidnight(date: Date): void {
-    date.setUTCHours(0);
-    date.setUTCMinutes(0);
-    date.setUTCSeconds(0);
-    date.setUTCMilliseconds(0);
-  }
-
-  static channelShortIdToIntegerId(channelId: string): string {
-    if (channelId.indexOf('x') === -1) { // Already an integer id
-      return channelId;
-    }
-    if (channelId.indexOf('/') !== -1) { // Topology import
-      channelId = channelId.slice(0, -2);
-    }
-    const s = channelId.split('x').map(part => BigInt(part));
-    return ((s[0] << 40n) | (s[1] << 16n) | s[2]).toString();
-  }
-
-  /** Decodes a channel id returned by lnd as uint64 to a short channel id */
-  static channelIntegerIdToShortId(id: string): string {
-    if (id.indexOf('/') !== -1) {
-      id = id.slice(0, -2);
-    }
-    
-    if (id.indexOf('x') !== -1) { // Already a short id
-      return id;
-    }
-
-    const n = BigInt(id);
-    return [
-      n >> 40n, // nth block
-      (n >> 16n) & 0xffffffn, // nth tx of the block
-      n & 0xffffn // nth output of the tx
-    ].join('x');
-  }
-
-  static utcDateToMysql(date?: number | null): string | null {
-    if (date === null) {
-      return null;
-    }
-    const d = new Date((date || 0) * 1000);
-    return d.toISOString().split('T')[0] + ' ' + d.toTimeString().split(' ')[0];
-  }
-
-  static findSocketNetwork(addr: string): {network: string | null, url: string} {
-    let network: string | null = null;
-    let url: string = addr;
-
-    if (config.LIGHTNING.BACKEND === 'cln') {
-      url = addr.split('://')[1];
-    }
-
-    if (!url) {
-      return {
-        network: null,
-        url: addr,
-      };
-    }
-
-    if (addr.indexOf('onion') !== -1) {
-      if (url.split('.')[0].length >= 56) {
-        network = 'torv3';
-      } else {
-        network = 'torv2';
-      }
-    } else if (addr.indexOf('i2p') !== -1) {
-      network = 'i2p';
-    } else if (addr.indexOf('ipv4') !== -1 || (config.LIGHTNING.BACKEND === 'lnd' && isIP(url.split(':')[0]) === 4)) {
-      const ipv = isIP(url.split(':')[0]);
-      if (ipv === 4) {
-        network = 'ipv4';
-      } else {
-        return {
-          network: null,
-          url: addr,
-        };
-      }
-    } else if (addr.indexOf('ipv6') !== -1 || (config.LIGHTNING.BACKEND === 'lnd' && url.indexOf(']:'))) {
-      url = url.split('[')[1].split(']')[0];
-      const ipv = isIP(url);
-      if (ipv === 6) {
-        const parts = addr.split(':');
-        network = 'ipv6';
-        url = `[${url}]:${parts[parts.length - 1]}`;
-      } else {
-        return {
-          network: null,
-          url: addr,
-        };
-      }
-    } else {
-      return {
-        network: null,
-        url: addr,
-      };
-    }
-
-    return {
-      network: network,
-      url: url,
-    };
-  }
-
-  static formatSocket(publicKey: string, socket: {network: string, addr: string}): NodeSocket {
-    if (config.LIGHTNING.BACKEND === 'cln') {
-      return {
-        publicKey: publicKey,
-        network: socket.network,
-        addr: socket.addr,
-      };
-    } else /* if (config.LIGHTNING.BACKEND === 'lnd') */ {
-      const formatted = this.findSocketNetwork(socket.addr);
-      return {
-        publicKey: publicKey,
-        network: formatted.network,
-        addr: formatted.url,
-      };
-    }
-  }
-}

backend/src/api/difficulty-adjustment.ts

@@ -1,106 +0,0 @@
-import config from '../config';
-import { IDifficultyAdjustment } from '../mempool.interfaces';
-import blocks from './blocks';
-
-export interface DifficultyAdjustment {
-  progressPercent: number;       // Percent: 0 to 100
-  difficultyChange: number;      // Percent: -75 to 300
-  estimatedRetargetDate: number; // Unix time in ms
-  remainingBlocks: number;       // Block count
-  remainingTime: number;         // Duration of time in ms
-  previousRetarget: number;      // Percent: -75 to 300
-  previousTime: number;          // Unix time in ms
-  nextRetargetHeight: number;    // Block Height
-  timeAvg: number;               // Duration of time in ms
-  timeOffset: number;            // (Testnet) Time since last block (cap @ 20min) in ms
-  expectedBlocks: number;         // Block count
-}
-
-export function calcDifficultyAdjustment(
-  DATime: number,
-  nowSeconds: number,
-  blockHeight: number,
-  previousRetarget: number,
-  network: string,
-  latestBlockTimestamp: number,
-): DifficultyAdjustment {
-  const ESTIMATE_LAG_BLOCKS = 146; // For first 7.2% of epoch, don't estimate.
-  const EPOCH_BLOCK_LENGTH = 2016; // Bitcoin mainnet
-  const BLOCK_SECONDS_TARGET = 600; // Bitcoin mainnet
-  const TESTNET_MAX_BLOCK_SECONDS = 1200; // Bitcoin testnet
-
-  const diffSeconds = nowSeconds - DATime;
-  const blocksInEpoch = (blockHeight >= 0) ? blockHeight % EPOCH_BLOCK_LENGTH : 0;
-  const progressPercent = (blockHeight >= 0) ? blocksInEpoch / EPOCH_BLOCK_LENGTH * 100 : 100;
-  const remainingBlocks = EPOCH_BLOCK_LENGTH - blocksInEpoch;
-  const nextRetargetHeight = (blockHeight >= 0) ? blockHeight + remainingBlocks : 0;
-  const expectedBlocks = diffSeconds / BLOCK_SECONDS_TARGET;
-
-  let difficultyChange = 0;
-  let timeAvgSecs = diffSeconds / blocksInEpoch;
-  // Only calculate the estimate once we have 7.2% of blocks in current epoch
-  if (blocksInEpoch >= ESTIMATE_LAG_BLOCKS) {
-    difficultyChange = (BLOCK_SECONDS_TARGET / timeAvgSecs - 1) * 100;
-    // Max increase is x4 (+300%)
-    if (difficultyChange > 300) {
-      difficultyChange = 300;
-    }
-    // Max decrease is /4 (-75%)
-    if (difficultyChange < -75) {
-      difficultyChange = -75;
-    }
-  }
-
-  // Testnet difficulty is set to 1 after 20 minutes of no blocks,
-  // therefore the time between blocks will always be below 20 minutes (1200s).
-  let timeOffset = 0;
-  if (network === 'testnet') {
-    if (timeAvgSecs > TESTNET_MAX_BLOCK_SECONDS) {
-      timeAvgSecs = TESTNET_MAX_BLOCK_SECONDS;
-    }
-
-    const secondsSinceLastBlock = nowSeconds - latestBlockTimestamp;
-    if (secondsSinceLastBlock + timeAvgSecs > TESTNET_MAX_BLOCK_SECONDS) {
-      timeOffset = -Math.min(secondsSinceLastBlock, TESTNET_MAX_BLOCK_SECONDS) * 1000;
-    }
-  }
-
-  const timeAvg = Math.floor(timeAvgSecs * 1000);
-  const remainingTime = remainingBlocks * timeAvg;
-  const estimatedRetargetDate = remainingTime + nowSeconds * 1000;
-
-  return {
-    progressPercent,
-    difficultyChange,
-    estimatedRetargetDate,
-    remainingBlocks,
-    remainingTime,
-    previousRetarget,
-    previousTime: DATime,
-    nextRetargetHeight,
-    timeAvg,
-    timeOffset,
-    expectedBlocks,
-  };
-}
-
-class DifficultyAdjustmentApi {
-  public getDifficultyAdjustment(): IDifficultyAdjustment | null {
-    const DATime = blocks.getLastDifficultyAdjustmentTime();
-    const previousRetarget = blocks.getPreviousDifficultyRetarget();
-    const blockHeight = blocks.getCurrentBlockHeight();
-    const blocksCache = blocks.getBlocks();
-    const latestBlock = blocksCache[blocksCache.length - 1];
-    if (!latestBlock) {
-      return null;
-    }
-    const nowSeconds = Math.floor(new Date().getTime() / 1000);
-
-    return calcDifficultyAdjustment(
-      DATime, nowSeconds, blockHeight, previousRetarget,
-      config.MEMPOOL.NETWORK, latestBlock.timestamp
-    );
-  }
-}
-
-export default new DifficultyAdjustmentApi();

backend/src/api/disk-cache.ts

@@ -1,203 +1,15 @@
 import * as fs from 'fs';
-const fsPromises = fs.promises;
-import cluster from 'cluster';
-import memPool from './mempool';
-import blocks from './blocks';
-import logger from '../logger';
-import config from '../config';
-import { TransactionExtended } from '../mempool.interfaces';
-import { Common } from './common';
 
 class DiskCache {
-  private cacheSchemaVersion = 3;
+  static FILE_NAME = './cache.json';
+  constructor() { }
 
-  private static TMP_FILE_NAME = config.MEMPOOL.CACHE_DIR + '/tmp-cache.json';
-  private static TMP_FILE_NAMES = config.MEMPOOL.CACHE_DIR + '/tmp-cache{number}.json';
-  private static FILE_NAME = config.MEMPOOL.CACHE_DIR + '/cache.json';
-  private static FILE_NAMES = config.MEMPOOL.CACHE_DIR + '/cache{number}.json';
-  private static CHUNK_FILES = 25;
-  private isWritingCache = false;
-
-  constructor() {
-    if (!cluster.isMaster) {
-      return;
-    }
-    process.on('SIGINT', (e) => {
-      this.saveCacheToDiskSync();
-      process.exit(2);
-    });
-    process.on('SIGTERM', (e) => {
-      this.saveCacheToDiskSync();
-      process.exit(2);
-    });
+  saveData(dataBlob: string) {
+    fs.writeFileSync(DiskCache.FILE_NAME, dataBlob, 'utf8');
   }
 
-  async $saveCacheToDisk(): Promise<void> {
-    if (!cluster.isPrimary) {
-      return;
-    }
-    if (this.isWritingCache) {
-      logger.debug('Saving cache already in progress. Skipping.');
-      return;
-    }
-    try {
-      logger.debug('Writing mempool and blocks data to disk cache (async)...');
-      this.isWritingCache = true;
-
-      const mempool = memPool.getMempool();
-      const mempoolArray: TransactionExtended[] = [];
-      for (const tx in mempool) {
-        mempoolArray.push(mempool[tx]);
-      }
-
-      Common.shuffleArray(mempoolArray);
-
-      const chunkSize = Math.floor(mempoolArray.length / DiskCache.CHUNK_FILES);
-
-      await fsPromises.writeFile(DiskCache.FILE_NAME, JSON.stringify({
-        network: config.MEMPOOL.NETWORK,
-        cacheSchemaVersion: this.cacheSchemaVersion,
-        blocks: blocks.getBlocks(),
-        blockSummaries: blocks.getBlockSummaries(),
-        mempool: {},
-        mempoolArray: mempoolArray.splice(0, chunkSize),
-      }), { flag: 'w' });
-      for (let i = 1; i < DiskCache.CHUNK_FILES; i++) {
-        await fsPromises.writeFile(DiskCache.FILE_NAMES.replace('{number}', i.toString()), JSON.stringify({
-          mempool: {},
-          mempoolArray: mempoolArray.splice(0, chunkSize),
-        }), { flag: 'w' });
-      }
-      logger.debug('Mempool and blocks data saved to disk cache');
-      this.isWritingCache = false;
-    } catch (e) {
-      logger.warn('Error writing to cache file: ' + (e instanceof Error ? e.message : e));
-      this.isWritingCache = false;
-    }
-  }
-
-  saveCacheToDiskSync(): void {
-    if (!cluster.isPrimary) {
-      return;
-    }
-    if (this.isWritingCache) {
-      logger.debug('Saving cache already in progress. Skipping.');
-      return;
-    }
-    try {
-      logger.debug('Writing mempool and blocks data to disk cache (sync)...');
-      this.isWritingCache = true;
-
-      const mempool = memPool.getMempool();
-      const mempoolArray: TransactionExtended[] = [];
-      for (const tx in mempool) {
-        mempoolArray.push(mempool[tx]);
-      }
-
-      Common.shuffleArray(mempoolArray);
-
-      const chunkSize = Math.floor(mempoolArray.length / DiskCache.CHUNK_FILES);
-
-      fs.writeFileSync(DiskCache.TMP_FILE_NAME, JSON.stringify({
-        network: config.MEMPOOL.NETWORK,
-        cacheSchemaVersion: this.cacheSchemaVersion,
-        blocks: blocks.getBlocks(),
-        blockSummaries: blocks.getBlockSummaries(),
-        mempool: {},
-        mempoolArray: mempoolArray.splice(0, chunkSize),
-      }), { flag: 'w' });
-      for (let i = 1; i < DiskCache.CHUNK_FILES; i++) {
-        fs.writeFileSync(DiskCache.TMP_FILE_NAMES.replace('{number}', i.toString()), JSON.stringify({
-          mempool: {},
-          mempoolArray: mempoolArray.splice(0, chunkSize),
-        }), { flag: 'w' });
-      }
-
-      fs.renameSync(DiskCache.TMP_FILE_NAME, DiskCache.FILE_NAME);
-      for (let i = 1; i < DiskCache.CHUNK_FILES; i++) {
-        fs.renameSync(DiskCache.TMP_FILE_NAMES.replace('{number}', i.toString()), DiskCache.FILE_NAMES.replace('{number}', i.toString()));
-      }
-
-      logger.debug('Mempool and blocks data saved to disk cache');
-      this.isWritingCache = false;
-    } catch (e) {
-      logger.warn('Error writing to cache file: ' + (e instanceof Error ? e.message : e));
-      this.isWritingCache = false;
-    }
-  }
-
-  wipeCache(): void {
-    logger.notice(`Wiping nodejs backend cache/cache*.json files`);
-    try {
-      fs.unlinkSync(DiskCache.FILE_NAME);
-    } catch (e: any) {
-      if (e?.code !== 'ENOENT') {
-        logger.err(`Cannot wipe cache file ${DiskCache.FILE_NAME}. Exception ${JSON.stringify(e)}`);
-      }
-    }
-
-    for (let i = 1; i < DiskCache.CHUNK_FILES; i++) {
-      const filename = DiskCache.FILE_NAMES.replace('{number}', i.toString());
-      try {
-        fs.unlinkSync(filename);
-      } catch (e: any) {
-        if (e?.code !== 'ENOENT') {
-          logger.err(`Cannot wipe cache file ${filename}. Exception ${JSON.stringify(e)}`);
-        }
-      }
-    }
-  }
-
-  loadMempoolCache(): void {
-    if (!fs.existsSync(DiskCache.FILE_NAME)) {
-      return;
-    }
-    try {
-      let data: any = {};
-      const cacheData = fs.readFileSync(DiskCache.FILE_NAME, 'utf8');
-      if (cacheData) {
-        logger.info('Restoring mempool and blocks data from disk cache');
-        data = JSON.parse(cacheData);
-        if (data.cacheSchemaVersion === undefined || data.cacheSchemaVersion !== this.cacheSchemaVersion) {
-          logger.notice('Disk cache contains an outdated schema version. Clearing it and skipping the cache loading.');
-          return this.wipeCache();
-        }
-        if (data.network && data.network !== config.MEMPOOL.NETWORK) {
-          logger.notice('Disk cache contains data from a different network. Clearing it and skipping the cache loading.');
-          return this.wipeCache();
-        }
-
-        if (data.mempoolArray) {
-          for (const tx of data.mempoolArray) {
-            data.mempool[tx.txid] = tx;
-          }
-        }
-      }
-
-      for (let i = 1; i < DiskCache.CHUNK_FILES; i++) {
-        const fileName = DiskCache.FILE_NAMES.replace('{number}', i.toString());
-        try {
-          if (fs.existsSync(fileName)) {
-            const cacheData2 = JSON.parse(fs.readFileSync(fileName, 'utf8'));
-            if (cacheData2.mempoolArray) {
-              for (const tx of cacheData2.mempoolArray) {
-                data.mempool[tx.txid] = tx;
-              }
-            } else {
-              Object.assign(data.mempool, cacheData2.mempool);
-            }
-          }
-        } catch (e) {
-          logger.info('Error parsing ' + fileName + '. Skipping. Reason: ' + (e instanceof Error ? e.message : e));
-        }
-      }
-
-      memPool.setMempool(data.mempool);
-      blocks.setBlocks(data.blocks);
-      blocks.setBlockSummaries(data.blockSummaries || []);
-    } catch (e) {
-      logger.warn('Failed to parse mempoool and blocks cache. Skipping. Reason: ' + (e instanceof Error ? e.message : e));
-    }
+  loadData(): string {
+    return fs.readFileSync(DiskCache.FILE_NAME, 'utf8');
   }
 }
 

backend/src/api/explorer/channels.api.ts

@@ -1,709 +0,0 @@
-import logger from '../../logger';
-import DB from '../../database';
-import nodesApi from './nodes.api';
-import { ResultSetHeader } from 'mysql2';
-import { ILightningApi } from '../lightning/lightning-api.interface';
-import { Common } from '../common';
-
-class ChannelsApi {
-  public async $getAllChannels(): Promise<any[]> {
-    try {
-      const query = `SELECT * FROM channels`;
-      const [rows]: any = await DB.query(query);
-      return rows;
-    } catch (e) {
-      logger.err('$getAllChannels error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  public async $getAllChannelsGeo(publicKey?: string, style?: string): Promise<any[]> {
-    try {
-      let select: string;
-      if (style === 'widget') {
-        select = `
-          nodes_1.latitude AS node1_latitude, nodes_1.longitude AS node1_longitude,
-          nodes_2.latitude AS node2_latitude, nodes_2.longitude AS node2_longitude
-        `;
-      } else {
-        select = `
-          nodes_1.public_key as node1_public_key, nodes_1.alias AS node1_alias,
-          nodes_1.latitude AS node1_latitude, nodes_1.longitude AS node1_longitude,
-          nodes_2.public_key as node2_public_key, nodes_2.alias AS node2_alias,
-          nodes_2.latitude AS node2_latitude, nodes_2.longitude AS node2_longitude
-        `;
-      }
-
-      const params: string[] = [];
-      let query = `SELECT ${select}
-        FROM channels
-        JOIN nodes AS nodes_1 on nodes_1.public_key = channels.node1_public_key
-        JOIN nodes AS nodes_2 on nodes_2.public_key = channels.node2_public_key
-        WHERE channels.status = 1
-          AND nodes_1.latitude IS NOT NULL AND nodes_1.longitude IS NOT NULL
-          AND nodes_2.latitude IS NOT NULL AND nodes_2.longitude IS NOT NULL
-      `;
-
-      if (publicKey !== undefined) {
-        query += ' AND (nodes_1.public_key = ? OR nodes_2.public_key = ?)';
-        params.push(publicKey);
-        params.push(publicKey);
-      } else {
-        query += ` AND channels.capacity > 1000000
-          GROUP BY nodes_1.public_key, nodes_2.public_key
-          ORDER BY channels.capacity DESC
-          LIMIT 10000
-        `;        
-      }
-
-      const [rows]: any = await DB.query(query, params);
-      return rows.map((row) => {
-        if (style === 'widget') {
-          return [
-            row.node1_longitude, row.node1_latitude,
-            row.node2_longitude, row.node2_latitude,
-          ];
-        } else {
-          return [
-            row.node1_public_key, row.node1_alias,
-            row.node1_longitude, row.node1_latitude,
-            row.node2_public_key, row.node2_alias,
-            row.node2_longitude, row.node2_latitude,
-          ];
-        }
-      });
-    } catch (e) {
-      logger.err('$getAllChannelsGeo error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  public async $searchChannelsById(search: string): Promise<any[]> {
-    try {
-      const searchStripped = search.replace('%', '') + '%';
-      const query = `SELECT id, short_id, capacity, status FROM channels WHERE id LIKE ? OR short_id LIKE ? LIMIT 10`;
-      const [rows]: any = await DB.query(query, [searchStripped, searchStripped]);
-      return rows;
-    } catch (e) {
-      logger.err('$searchChannelsById error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  public async $getChannelsByStatus(status: number | number[]): Promise<any[]> {
-    try {
-      let query: string;
-      if (Array.isArray(status)) {
-        query = `SELECT * FROM channels WHERE status IN (${status.join(',')})`;
-      } else {
-        query = `SELECT * FROM channels WHERE status = ?`;
-      }
-      const [rows]: any = await DB.query(query, [status]);
-      return rows;
-    } catch (e) {
-      logger.err('$getChannelsByStatus error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  public async $getClosedChannelsWithoutReason(): Promise<any[]> {
-    try {
-      const query = `SELECT * FROM channels WHERE status = 2 AND closing_reason IS NULL AND closing_transaction_id != ''`;
-      const [rows]: any = await DB.query(query);
-      return rows;
-    } catch (e) {
-      logger.err('$getClosedChannelsWithoutReason error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  public async $getUnresolvedClosedChannels(): Promise<any[]> {
-    try {
-      const query = `SELECT * FROM channels WHERE status = 2 AND closing_reason = 2 AND closing_resolved = 0 AND closing_transaction_id != ''`;
-      const [rows]: any = await DB.query(query);
-      return rows;
-    } catch (e) {
-      logger.err('$getUnresolvedClosedChannels error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  public async $getChannelsWithoutSourceChecked(): Promise<any[]> {
-    try {
-      const query = `
-        SELECT channels.*
-        FROM channels
-        WHERE channels.source_checked != 1
-      `;
-      const [rows]: any = await DB.query(query);
-      return rows;
-    } catch (e) {
-      logger.err('$getUnresolvedClosedChannels error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  public async $getChannelsWithoutCreatedDate(): Promise<any[]> {
-    try {
-      const query = `SELECT * FROM channels WHERE created IS NULL`;
-      const [rows]: any = await DB.query(query);
-      return rows;
-    } catch (e) {
-      logger.err('$getChannelsWithoutCreatedDate error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  public async $getChannel(id: string): Promise<any> {
-    try {
-      const query = `
-        SELECT n1.alias AS alias_left, n1.longitude as node1_longitude, n1.latitude as node1_latitude,
-          n2.alias AS alias_right, n2.longitude as node2_longitude, n2.latitude as node2_latitude,
-          channels.*,
-          ns1.channels AS channels_left, ns1.capacity AS capacity_left, ns2.channels AS channels_right, ns2.capacity AS capacity_right
-        FROM channels
-        LEFT JOIN nodes AS n1 ON n1.public_key = channels.node1_public_key
-        LEFT JOIN nodes AS n2 ON n2.public_key = channels.node2_public_key
-        LEFT JOIN node_stats AS ns1 ON ns1.public_key = channels.node1_public_key
-        LEFT JOIN node_stats AS ns2 ON ns2.public_key = channels.node2_public_key
-        WHERE (
-          ns1.id = (
-            SELECT MAX(id)
-            FROM node_stats
-            WHERE public_key = channels.node1_public_key
-          )
-          AND ns2.id = (
-            SELECT MAX(id)
-            FROM node_stats
-            WHERE public_key = channels.node2_public_key
-          )
-        )
-        AND channels.id = ?
-      `;
-
-      const [rows]: any = await DB.query(query, [id]);
-      if (rows[0]) {
-        return this.convertChannel(rows[0]);
-      }
-    } catch (e) {
-      logger.err('$getChannel error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  public async $getChannelsStats(): Promise<any> {
-    try {
-      // Feedback from zerofeerouting:
-      // "I would argue > 5000ppm can be ignored. Channels charging more than .5% fee are ignored by CLN for example."
-      const ignoredFeeRateThreshold = 5000;
-      const ignoredBaseFeeThreshold = 5000;
-
-      // Capacity
-      let query = `SELECT AVG(capacity) AS avgCapacity FROM channels WHERE status = 1 ORDER BY capacity`;
-      const [avgCapacity]: any = await DB.query(query);
-
-      query = `SELECT capacity FROM channels WHERE status = 1 ORDER BY capacity`;
-      let [capacity]: any = await DB.query(query);
-      capacity = capacity.map(capacity => capacity.capacity);
-      const medianCapacity = capacity[Math.floor(capacity.length / 2)];
-
-      // Fee rates
-      query = `SELECT node1_fee_rate FROM channels WHERE node1_fee_rate < ${ignoredFeeRateThreshold} AND status = 1`;
-      let [feeRates1]: any = await DB.query(query);
-      feeRates1 = feeRates1.map(rate => rate.node1_fee_rate);
-      query = `SELECT node2_fee_rate FROM channels WHERE node2_fee_rate < ${ignoredFeeRateThreshold} AND status = 1`;
-      let [feeRates2]: any = await DB.query(query);
-      feeRates2 = feeRates2.map(rate => rate.node2_fee_rate);
-
-      let feeRates = (feeRates1.concat(feeRates2)).sort((a, b) => a - b);
-      let avgFeeRate = 0;
-      for (const rate of feeRates) {
-        avgFeeRate += rate; 
-      }
-      avgFeeRate /= feeRates.length;
-      const medianFeeRate = feeRates[Math.floor(feeRates.length / 2)];
-
-      // Base fees
-      query = `SELECT node1_base_fee_mtokens FROM channels WHERE node1_base_fee_mtokens < ${ignoredBaseFeeThreshold} AND status = 1`;
-      let [baseFees1]: any = await DB.query(query);
-      baseFees1 = baseFees1.map(rate => rate.node1_base_fee_mtokens);
-      query = `SELECT node2_base_fee_mtokens FROM channels WHERE node2_base_fee_mtokens < ${ignoredBaseFeeThreshold} AND status = 1`;
-      let [baseFees2]: any = await DB.query(query);
-      baseFees2 = baseFees2.map(rate => rate.node2_base_fee_mtokens);
-
-      let baseFees = (baseFees1.concat(baseFees2)).sort((a, b) => a - b);
-      let avgBaseFee = 0;
-      for (const fee of baseFees) {
-        avgBaseFee += fee; 
-      }
-      avgBaseFee /= baseFees.length;
-      const medianBaseFee = feeRates[Math.floor(baseFees.length / 2)];
-      
-      return {
-        avgCapacity: parseInt(avgCapacity[0].avgCapacity, 10),
-        avgFeeRate: avgFeeRate,
-        avgBaseFee: avgBaseFee,
-        medianCapacity: medianCapacity,
-        medianFeeRate: medianFeeRate,
-        medianBaseFee: medianBaseFee,
-      }
-
-    } catch (e) {
-      logger.err(`Cannot calculate channels statistics. Reason: ${e instanceof Error ? e.message : e}`);
-      throw e;
-    }
-  }
-
-  public async $getChannelsByTransactionId(transactionIds: string[]): Promise<any[]> {
-    try {
-      const query = `
-        SELECT n1.alias AS alias_left, n2.alias AS alias_right, channels.*
-        FROM channels
-        LEFT JOIN nodes AS n1 ON n1.public_key = channels.node1_public_key
-        LEFT JOIN nodes AS n2 ON n2.public_key = channels.node2_public_key
-        WHERE channels.transaction_id IN ? OR channels.closing_transaction_id IN ?
-      `;
-      const [rows]: any = await DB.query(query, [[transactionIds], [transactionIds]]);
-      const channels = rows.map((row) => this.convertChannel(row));
-      return channels;
-    } catch (e) {
-      logger.err('$getChannelByTransactionId error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  public async $getChannelByClosingId(transactionId: string): Promise<any> {
-    try {
-      const query = `
-        SELECT
-          channels.*
-        FROM channels
-        WHERE channels.closing_transaction_id = ?
-      `;
-      const [rows]: any = await DB.query(query, [transactionId]);
-      if (rows.length > 0) {
-        rows[0].outputs = JSON.parse(rows[0].outputs);
-        return rows[0];
-      }
-    } catch (e) {
-      logger.err('$getChannelByClosingId error: ' + (e instanceof Error ? e.message : e));
-      // don't throw - this data isn't essential
-    }
-  }
-
-  public async $getChannelsByOpeningId(transactionId: string): Promise<any> {
-    try {
-      const query = `
-        SELECT
-          channels.*
-        FROM channels
-        WHERE channels.transaction_id = ?
-      `;
-      const [rows]: any = await DB.query(query, [transactionId]);
-      if (rows.length > 0) {
-        return rows.map(row => {
-          row.outputs = JSON.parse(row.outputs);
-          return row;
-        });
-      }
-    } catch (e) {
-      logger.err('$getChannelsByOpeningId error: ' + (e instanceof Error ? e.message : e));
-      // don't throw - this data isn't essential
-    }
-  }
-
-  public async $updateClosingInfo(channelInfo: { id: string, node1_closing_balance: number, node2_closing_balance: number, closed_by: string | null, closing_fee: number, outputs: ILightningApi.ForensicOutput[]}): Promise<void> {
-    try {
-      const query = `
-        UPDATE channels SET
-          node1_closing_balance = ?,
-          node2_closing_balance = ?,
-          closed_by = ?,
-          closing_fee = ?,
-          outputs = ?
-        WHERE channels.id = ?
-      `;
-      await DB.query<ResultSetHeader>(query, [
-        channelInfo.node1_closing_balance || 0,
-        channelInfo.node2_closing_balance || 0,
-        channelInfo.closed_by,
-        channelInfo.closing_fee || 0,
-        JSON.stringify(channelInfo.outputs),
-        channelInfo.id,
-      ]);
-    } catch (e) {
-      logger.err('$updateClosingInfo error: ' + (e instanceof Error ? e.message : e));
-      // don't throw - this data isn't essential
-    }
-  }
-
-  public async $updateOpeningInfo(channelInfo: { id: string, node1_funding_balance: number, node2_funding_balance: number, funding_ratio: number, single_funded: boolean | void }): Promise<void> {
-    try {
-      const query = `
-        UPDATE channels SET
-          node1_funding_balance = ?,
-          node2_funding_balance = ?,
-          funding_ratio = ?,
-          single_funded = ?
-        WHERE channels.id = ?
-      `;
-      await DB.query<ResultSetHeader>(query, [
-        channelInfo.node1_funding_balance || 0,
-        channelInfo.node2_funding_balance || 0,
-        channelInfo.funding_ratio,
-        channelInfo.single_funded ? 1 : 0,
-        channelInfo.id,
-      ]);
-    } catch (e) {
-      logger.err('$updateOpeningInfo error: ' + (e instanceof Error ? e.message : e));
-      // don't throw - this data isn't essential
-    }
-  }
-
-  public async $markChannelSourceChecked(id: string): Promise<void> {
-    try {
-      const query = `
-        UPDATE channels
-        SET source_checked = 1
-        WHERE id = ?
-      `;
-      await DB.query<ResultSetHeader>(query, [id]);
-    } catch (e) {
-      logger.err('$markChannelSourceChecked error: ' + (e instanceof Error ? e.message : e));
-      // don't throw - this data isn't essential
-    }
-  }
-
-  public async $getChannelsForNode(public_key: string, index: number, length: number, status: string): Promise<any[]> {
-    try {
-      let channelStatusFilter;
-      if (status === 'open') {
-        channelStatusFilter = '< 2';
-      } else if (status === 'active') {
-        channelStatusFilter = '= 1';
-      } else if (status === 'closed') {
-        channelStatusFilter = '= 2';
-      } else {
-        throw new Error('getChannelsForNode: Invalid status requested');
-      }
-
-      // Channels originating from node
-      let query = `
-        SELECT COALESCE(node2.alias, SUBSTRING(node2_public_key, 0, 20)) AS alias, COALESCE(node2.public_key, node2_public_key) AS public_key,
-          channels.status, channels.node1_fee_rate,
-          channels.capacity, channels.short_id, channels.id, channels.closing_reason,
-          UNIX_TIMESTAMP(closing_date) as closing_date, UNIX_TIMESTAMP(channels.updated_at) as updated_at
-        FROM channels
-        LEFT JOIN nodes AS node2 ON node2.public_key = channels.node2_public_key
-        WHERE node1_public_key = ? AND channels.status ${channelStatusFilter}
-      `;
-      const [channelsFromNode]: any = await DB.query(query, [public_key]);
-
-      // Channels incoming to node
-      query = `
-        SELECT COALESCE(node1.alias, SUBSTRING(node1_public_key, 0, 20)) AS alias, COALESCE(node1.public_key, node1_public_key) AS public_key,
-          channels.status, channels.node2_fee_rate,
-          channels.capacity, channels.short_id, channels.id, channels.closing_reason,
-          UNIX_TIMESTAMP(closing_date) as closing_date, UNIX_TIMESTAMP(channels.updated_at) as updated_at
-        FROM channels
-        LEFT JOIN nodes AS node1 ON node1.public_key = channels.node1_public_key
-        WHERE node2_public_key = ? AND channels.status ${channelStatusFilter}
-      `;
-      const [channelsToNode]: any = await DB.query(query, [public_key]);
-
-      let allChannels = channelsFromNode.concat(channelsToNode);
-      allChannels.sort((a, b) => {
-        if (status === 'closed') {
-          if (!b.closing_date && !a.closing_date) {
-            return (b.updated_at ?? 0) - (a.updated_at ?? 0);
-          } else {
-            return (b.closing_date ?? 0) - (a.closing_date ?? 0);
-          }
-        } else {
-          return b.capacity - a.capacity;
-        }
-      });
-
-      if (index >= 0) {
-        allChannels = allChannels.slice(index, index + length);
-      } else if (index === -1) { // Node channels tree chart
-        allChannels = allChannels.slice(0, 1000);
-      }
-
-      const channels: any[] = []
-      for (const row of allChannels) {
-        let channel;
-        if (index >= 0) {
-          const activeChannelsStats: any = await nodesApi.$getActiveChannelsStats(row.public_key);
-          channel = {
-            status: row.status,
-            closing_reason: row.closing_reason,
-            closing_date: row.closing_date,
-            capacity: row.capacity ?? 0,
-            short_id: row.short_id,
-            id: row.id,
-            fee_rate: row.node1_fee_rate ?? row.node2_fee_rate ?? 0,
-            node: {
-              alias: row.alias.length > 0 ? row.alias : row.public_key.slice(0, 20),
-              public_key: row.public_key,
-              channels: activeChannelsStats.active_channel_count ?? 0,
-              capacity: activeChannelsStats.capacity ?? 0,
-            }
-          };
-        } else if (index === -1) {
-          channel = {
-            capacity: row.capacity ?? 0,
-            short_id: row.short_id,
-            id: row.id,
-            node: {
-              alias: row.alias.length > 0 ? row.alias : row.public_key.slice(0, 20),
-              public_key: row.public_key,
-            }
-          };
-        }
-
-        channels.push(channel);
-      }
-
-      return channels;
-    } catch (e) {
-      logger.err('$getChannelsForNode error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  public async $getChannelsCountForNode(public_key: string, status: string): Promise<any> {
-    try {
-      // Default active and inactive channels
-      let statusQuery = '< 2';
-      // Closed channels only
-      if (status === 'closed') {
-        statusQuery = '= 2';
-      }
-      const query = `
-        SELECT COUNT(*) AS count
-        FROM channels
-        WHERE (node1_public_key = ? OR node2_public_key = ?)
-        AND status ${statusQuery}
-      `;
-      const [rows]: any = await DB.query(query, [public_key, public_key]);
-      return rows[0]['count'];
-    } catch (e) {
-      logger.err('$getChannelsForNode error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  private convertChannel(channel: any): any {
-    return {
-      'id': channel.id,
-      'short_id': channel.short_id,
-      'capacity': channel.capacity,
-      'transaction_id': channel.transaction_id,
-      'transaction_vout': channel.transaction_vout,
-      'closing_transaction_id': channel.closing_transaction_id,
-      'closing_fee': channel.closing_fee,
-      'closing_reason': channel.closing_reason,
-      'closing_date': channel.closing_date,
-      'updated_at': channel.updated_at,
-      'created': channel.created,
-      'status': channel.status,
-      'funding_ratio': channel.funding_ratio,
-      'closed_by': channel.closed_by,
-      'single_funded': !!channel.single_funded,
-      'node_left': {
-        'alias': channel.alias_left,
-        'public_key': channel.node1_public_key,
-        'channels': channel.channels_left,
-        'capacity': channel.capacity_left,
-        'base_fee_mtokens': channel.node1_base_fee_mtokens,
-        'cltv_delta': channel.node1_cltv_delta,
-        'fee_rate': channel.node1_fee_rate,
-        'is_disabled': channel.node1_is_disabled,
-        'max_htlc_mtokens': channel.node1_max_htlc_mtokens,
-        'min_htlc_mtokens': channel.node1_min_htlc_mtokens,
-        'updated_at': channel.node1_updated_at,
-        'longitude': channel.node1_longitude,
-        'latitude': channel.node1_latitude,
-        'funding_balance': channel.node1_funding_balance,
-        'closing_balance': channel.node1_closing_balance,
-        'initiated_close': channel.closed_by === channel.node1_public_key ? true : undefined,
-      },
-      'node_right': {
-        'alias': channel.alias_right,
-        'public_key': channel.node2_public_key,
-        'channels': channel.channels_right,
-        'capacity': channel.capacity_right,
-        'base_fee_mtokens': channel.node2_base_fee_mtokens,
-        'cltv_delta': channel.node2_cltv_delta,
-        'fee_rate': channel.node2_fee_rate,
-        'is_disabled': channel.node2_is_disabled,
-        'max_htlc_mtokens': channel.node2_max_htlc_mtokens,
-        'min_htlc_mtokens': channel.node2_min_htlc_mtokens,
-        'updated_at': channel.node2_updated_at,
-        'longitude': channel.node2_longitude,
-        'latitude': channel.node2_latitude,
-        'funding_balance': channel.node2_funding_balance,
-        'closing_balance': channel.node2_closing_balance,
-        'initiated_close': channel.closed_by === channel.node2_public_key ? true : undefined,
-      },
-    };
-  }
-
-  /**
-   * Save or update a channel present in the graph
-   */
-  public async $saveChannel(channel: ILightningApi.Channel, status = 1): Promise<void> {
-    const [ txid, vout ] = channel.chan_point.split(':');
-
-    const policy1: Partial<ILightningApi.RoutingPolicy> = channel.node1_policy || {};
-    const policy2: Partial<ILightningApi.RoutingPolicy> = channel.node2_policy || {};
-
-    // https://github.com/mempool/mempool/issues/3006
-    if ((channel.last_update ?? 0) < 1514736061) { // January 1st 2018
-      channel.last_update = null;
-    }
-    if ((policy1.last_update ?? 0) < 1514736061) { // January 1st 2018
-      policy1.last_update = null;
-    }
-    if ((policy2.last_update ?? 0) < 1514736061) { // January 1st 2018
-      policy2.last_update = null;
-    }
-
-    const query = `INSERT INTO channels
-      (
-        id,
-        short_id,
-        capacity,
-        transaction_id,
-        transaction_vout,
-        updated_at,
-        status,
-        node1_public_key,
-        node1_base_fee_mtokens,
-        node1_cltv_delta,
-        node1_fee_rate,
-        node1_is_disabled,
-        node1_max_htlc_mtokens,
-        node1_min_htlc_mtokens,
-        node1_updated_at,
-        node2_public_key,
-        node2_base_fee_mtokens,
-        node2_cltv_delta,
-        node2_fee_rate,
-        node2_is_disabled,
-        node2_max_htlc_mtokens,
-        node2_min_htlc_mtokens,
-        node2_updated_at
-      )
-      VALUES (?, ?, ?, ?, ?, ?, ${status}, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
-      ON DUPLICATE KEY UPDATE
-        capacity = ?,
-        updated_at = ?,
-        status = ${status},
-        node1_public_key = ?,
-        node1_base_fee_mtokens = ?,
-        node1_cltv_delta = ?,
-        node1_fee_rate = ?,
-        node1_is_disabled = ?,
-        node1_max_htlc_mtokens = ?,
-        node1_min_htlc_mtokens = ?,
-        node1_updated_at = ?,
-        node2_public_key = ?,
-        node2_base_fee_mtokens = ?,
-        node2_cltv_delta = ?,
-        node2_fee_rate = ?,
-        node2_is_disabled = ?,
-        node2_max_htlc_mtokens = ?,
-        node2_min_htlc_mtokens = ?,
-        node2_updated_at = ?
-      ;`;
-
-    await DB.query(query, [
-      Common.channelShortIdToIntegerId(channel.channel_id),
-      Common.channelIntegerIdToShortId(channel.channel_id),
-      channel.capacity,
-      txid,
-      vout,
-      Common.utcDateToMysql(channel.last_update),
-      channel.node1_pub,
-      policy1.fee_base_msat,
-      policy1.time_lock_delta,
-      policy1.fee_rate_milli_msat,
-      policy1.disabled,
-      policy1.max_htlc_msat,
-      policy1.min_htlc,
-      Common.utcDateToMysql(policy1.last_update),
-      channel.node2_pub,
-      policy2.fee_base_msat,
-      policy2.time_lock_delta,
-      policy2.fee_rate_milli_msat,
-      policy2.disabled,
-      policy2.max_htlc_msat,
-      policy2.min_htlc,
-      Common.utcDateToMysql(policy2.last_update),
-      channel.capacity,
-      Common.utcDateToMysql(channel.last_update),
-      channel.node1_pub,
-      policy1.fee_base_msat,
-      policy1.time_lock_delta,
-      policy1.fee_rate_milli_msat,
-      policy1.disabled,
-      policy1.max_htlc_msat,
-      policy1.min_htlc,
-      Common.utcDateToMysql(policy1.last_update),
-      channel.node2_pub,
-      policy2.fee_base_msat,
-      policy2.time_lock_delta,
-      policy2.fee_rate_milli_msat,
-      policy2.disabled,
-      policy2.max_htlc_msat,
-      policy2.min_htlc,
-      Common.utcDateToMysql(policy2.last_update)
-    ]);
-  }
-
-  /**
-   * Set all channels not in `graphChannelsIds` as inactive (status = 0)
-   */
-  public async $setChannelsInactive(graphChannelsIds: string[]): Promise<void> {
-    if (graphChannelsIds.length === 0) {
-      return;
-    }
-
-    try {
-      const result = await DB.query<ResultSetHeader>(`
-        UPDATE channels
-        SET status = 0
-        WHERE id NOT IN (
-          ${graphChannelsIds.map(id => `"${id}"`).join(',')}
-        )
-        AND status != 2
-      `);
-      if (result[0].changedRows ?? 0 > 0) {
-        logger.debug(`Marked ${result[0].changedRows} channels as inactive because they are not in the graph`, logger.tags.ln);
-      }
-    } catch (e) {
-      logger.err('$setChannelsInactive() error: ' + (e instanceof Error ? e.message : e));
-    }
-  }
-
-  public async $getLatestChannelUpdateForNode(publicKey: string): Promise<number> {
-    try {
-      const query = `
-        SELECT MAX(UNIX_TIMESTAMP(updated_at)) as updated_at
-        FROM channels
-        WHERE node1_public_key = ?
-      `;
-      const [rows]: any[] = await DB.query(query, [publicKey]);
-      if (rows.length > 0) {
-        return rows[0].updated_at;
-      }
-    } catch (e) {
-      logger.err(`Can't getLatestChannelUpdateForNode for ${publicKey}. Reason ${e instanceof Error ? e.message : e}`);
-    }
-    return 0;
-  }
-}
-
-export default new ChannelsApi();

backend/src/api/explorer/channels.routes.ts

@@ -1,126 +0,0 @@
-import config from '../../config';
-import { Application, Request, Response } from 'express';
-import channelsApi from './channels.api';
-
-class ChannelsRoutes {
-  constructor() { }
-
-  public initRoutes(app: Application) {
-    app
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/channels/txids', this.$getChannelsByTransactionIds)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/channels/search/:search', this.$searchChannelsById)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/channels/:short_id', this.$getChannel)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/channels', this.$getChannelsForNode)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/channels-geo', this.$getAllChannelsGeo)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/channels-geo/:publicKey', this.$getAllChannelsGeo)
-    ;
-  }
-
-  private async $searchChannelsById(req: Request, res: Response) {
-    try {
-      const channels = await channelsApi.$searchChannelsById(req.params.search);
-      res.json(channels);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getChannel(req: Request, res: Response) {
-    try {
-      const channel = await channelsApi.$getChannel(req.params.short_id);
-      if (!channel) {
-        res.status(404).send('Channel not found');
-        return;
-      }
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(channel);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getChannelsForNode(req: Request, res: Response) {
-    try {
-      if (typeof req.query.public_key !== 'string') {
-        res.status(400).send('Missing parameter: public_key');
-        return;
-      }
-
-      const index = parseInt(typeof req.query.index === 'string' ? req.query.index : '0', 10) || 0;
-      const status: string = typeof req.query.status === 'string' ? req.query.status : '';
-
-      if (index < -1) {
-        res.status(400).send('Invalid index');
-      }
-      if (['open', 'active', 'closed'].includes(status) === false) {
-        res.status(400).send('Invalid status');
-      }
-
-      const channels = await channelsApi.$getChannelsForNode(req.query.public_key, index, 10, status);
-      const channelsCount = await channelsApi.$getChannelsCountForNode(req.query.public_key, status);
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.header('X-Total-Count', channelsCount.toString());
-      res.json(channels);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getChannelsByTransactionIds(req: Request, res: Response): Promise<void> {
-    try {
-      if (!Array.isArray(req.query.txId)) {
-        res.status(400).send('Not an array');
-        return;
-      }
-      const txIds: string[] = [];
-      for (const _txId in req.query.txId) {
-        if (typeof req.query.txId[_txId] === 'string') {
-          txIds.push(req.query.txId[_txId].toString());
-        }
-      }
-      const channels = await channelsApi.$getChannelsByTransactionId(txIds);
-      const result: any[] = [];
-      for (const txid of txIds) {
-        const inputs: any = {};
-        const outputs: any = {};
-        // Assuming that we only have one lightning close input in each transaction. This may not be true in the future
-        const foundChannelsFromInput = channels.find((channel) => channel.closing_transaction_id === txid);
-        if (foundChannelsFromInput) {
-          inputs[0] = foundChannelsFromInput;
-        }
-        const foundChannelsFromOutputs = channels.filter((channel) => channel.transaction_id === txid);
-        for (const output of foundChannelsFromOutputs) {
-          outputs[output.transaction_vout] = output;
-        }
-        result.push({
-          inputs,
-          outputs,
-        });
-      }
-
-      res.json(result);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getAllChannelsGeo(req: Request, res: Response) {
-    try {
-      const style: string = typeof req.query.style === 'string' ? req.query.style : '';
-      const channels = await channelsApi.$getAllChannelsGeo(req.params?.publicKey, style);
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(channels);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-}
-
-export default new ChannelsRoutes();

backend/src/api/explorer/general.routes.ts

@@ -1,58 +0,0 @@
-import config from '../../config';
-import { Application, Request, Response } from 'express';
-import nodesApi from './nodes.api';
-import channelsApi from './channels.api';
-import statisticsApi from './statistics.api';
-class GeneralLightningRoutes {
-  constructor() { }
-
-  public initRoutes(app: Application) {
-    app
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/search', this.$searchNodesAndChannels)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/statistics/latest', this.$getGeneralStats)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/statistics/:interval', this.$getStatistics)
-    ;
-  }
-
-  private async $searchNodesAndChannels(req: Request, res: Response) {
-    if (typeof req.query.searchText !== 'string') {
-      res.status(400).send('Missing parameter: searchText');
-      return;
-    }
-    try {
-      const nodes = await nodesApi.$searchNodeByPublicKeyOrAlias(req.query.searchText);
-      const channels = await channelsApi.$searchChannelsById(req.query.searchText);
-      res.json({
-        nodes: nodes,
-        channels: channels,
-      });
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getStatistics(req: Request, res: Response) {
-    try {
-      const statistics = await statisticsApi.$getStatistics(req.params.interval);
-      const statisticsCount = await statisticsApi.$getStatisticsCount();
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.header('X-total-count', statisticsCount.toString());
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(statistics);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getGeneralStats(req: Request, res: Response) {
-    try {
-      const statistics = await statisticsApi.$getLatestStatistics();
-      res.json(statistics);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-}
-
-export default new GeneralLightningRoutes();

backend/src/api/explorer/nodes.api.ts

@@ -1,723 +0,0 @@
-import logger from '../../logger';
-import DB from '../../database';
-import { ResultSetHeader } from 'mysql2';
-import { ILightningApi } from '../lightning/lightning-api.interface';
-import { ITopNodesPerCapacity, ITopNodesPerChannels } from '../../mempool.interfaces';
-
-class NodesApi {
-  public async $getWorldNodes(): Promise<any> {
-    try {
-      let query = `
-        SELECT nodes.public_key as publicKey, IF(nodes.alias = '', SUBSTRING(nodes.public_key, 1, 20), alias) as alias,
-        CAST(COALESCE(nodes.capacity, 0) as INT) as capacity,
-        CAST(COALESCE(nodes.channels, 0) as INT) as channels,
-        nodes.longitude, nodes.latitude,
-        geo_names_country.names as country, geo_names_iso.names as isoCode
-        FROM nodes
-        JOIN geo_names geo_names_country ON geo_names_country.id = nodes.country_id AND geo_names_country.type = 'country'
-        JOIN geo_names geo_names_iso ON geo_names_iso.id = nodes.country_id AND geo_names_iso.type = 'country_iso_code'
-        WHERE status = 1 AND nodes.as_number IS NOT NULL
-        ORDER BY capacity
-      `;
-
-      const [nodes]: any[] = await DB.query(query);
-
-      for (let i = 0; i < nodes.length; ++i) {
-        nodes[i].country = JSON.parse(nodes[i].country);
-      }
-
-      query = `
-        SELECT MAX(nodes.capacity) as maxLiquidity, MAX(nodes.channels) as maxChannels
-        FROM nodes
-        WHERE status = 1 AND nodes.as_number IS NOT NULL
-      `;
-
-      const [maximums]: any[] = await DB.query(query);
-      
-      return {
-        maxLiquidity: maximums[0].maxLiquidity,
-        maxChannels: maximums[0].maxChannels,
-        nodes: nodes.map(node => [
-          node.longitude, node.latitude,
-          node.publicKey, node.alias, node.capacity, node.channels,
-          node.country, node.isoCode
-        ])
-      };
-    } catch (e) {
-      logger.err(`Can't get world nodes list. Reason: ${e instanceof Error ? e.message : e}`);
-    }
-  }
-
-  public async $getNode(public_key: string): Promise<any> {
-    try {
-      // General info
-      let query = `
-        SELECT public_key, alias, UNIX_TIMESTAMP(first_seen) AS first_seen,
-          UNIX_TIMESTAMP(updated_at) AS updated_at, color, sockets as sockets,
-          as_number, city_id, country_id, subdivision_id, longitude, latitude,
-          geo_names_iso.names as iso_code, geo_names_as.names as as_organization, geo_names_city.names as city,
-          geo_names_country.names as country, geo_names_subdivision.names as subdivision
-        FROM nodes
-        LEFT JOIN geo_names geo_names_as on geo_names_as.id = as_number
-        LEFT JOIN geo_names geo_names_city on geo_names_city.id = city_id
-        LEFT JOIN geo_names geo_names_subdivision on geo_names_subdivision.id = subdivision_id
-        LEFT JOIN geo_names geo_names_country on geo_names_country.id = country_id
-        LEFT JOIN geo_names geo_names_iso ON geo_names_iso.id = nodes.country_id AND geo_names_iso.type = 'country_iso_code'
-        WHERE public_key = ?
-      `;
-      let [rows]: any[] = await DB.query(query, [public_key]);
-      if (rows.length === 0) {
-        throw new Error(`This node does not exist, or our node is not seeing it yet`);
-      }
-
-      const node = rows[0];
-      node.as_organization = JSON.parse(node.as_organization);
-      node.subdivision = JSON.parse(node.subdivision);
-      node.city = JSON.parse(node.city);
-      node.country = JSON.parse(node.country);
-
-      // Active channels and capacity
-      const activeChannelsStats: any = await this.$getActiveChannelsStats(public_key);
-      node.active_channel_count = activeChannelsStats.active_channel_count ?? 0;
-      node.capacity = activeChannelsStats.capacity ?? 0;
-
-      // Opened channels count
-      query = `
-        SELECT count(short_id) as opened_channel_count
-        FROM channels
-        WHERE status != 2 AND (channels.node1_public_key = ? OR channels.node2_public_key = ?)
-      `;
-      [rows] = await DB.query(query, [public_key, public_key]);
-      node.opened_channel_count = 0;
-      if (rows.length > 0) {
-        node.opened_channel_count = rows[0].opened_channel_count;
-      }
-
-      // Closed channels count
-      query = `
-        SELECT count(short_id) as closed_channel_count
-        FROM channels
-        WHERE status = 2 AND (channels.node1_public_key = ? OR channels.node2_public_key = ?)
-      `;
-      [rows] = await DB.query(query, [public_key, public_key]);
-      node.closed_channel_count = 0;
-      if (rows.length > 0) {
-        node.closed_channel_count = rows[0].closed_channel_count;
-      }
-
-      // Custom records
-      query = `
-        SELECT type, payload
-        FROM nodes_records
-        WHERE public_key = ?
-      `;
-      [rows] = await DB.query(query, [public_key]);
-      node.custom_records = {};
-      for (const record of rows) {
-        node.custom_records[record.type] = Buffer.from(record.payload, 'binary').toString('hex');
-      }
-
-      return node;
-    } catch (e) {
-      logger.err(`Cannot get node information for ${public_key}. Reason: ${(e instanceof Error ? e.message : e)}`);
-      throw e;
-    }
-  }
-
-  public async $getActiveChannelsStats(node_public_key: string): Promise<unknown> {
-    const query = `
-      SELECT count(short_id) as active_channel_count, sum(capacity) as capacity
-      FROM channels
-      WHERE status = 1 AND (channels.node1_public_key = ? OR channels.node2_public_key = ?)
-    `;
-    const [rows]: any[] = await DB.query(query, [node_public_key, node_public_key]);
-    if (rows.length > 0) {
-      return {
-        active_channel_count: rows[0].active_channel_count,
-        capacity: rows[0].capacity
-      };
-    } else {
-      return null;
-    }
-  }
-
-  public async $getFeeHistogram(node_public_key: string): Promise<unknown> {
-    try {
-      const inQuery = `
-        SELECT CASE WHEN fee_rate <= 10.0 THEN CEIL(fee_rate)
-                    WHEN (fee_rate > 10.0 and fee_rate <= 100.0) THEN CEIL(fee_rate / 10.0) * 10.0
-                    WHEN (fee_rate > 100.0 and fee_rate <= 1000.0) THEN CEIL(fee_rate / 100.0) * 100.0
-                    WHEN fee_rate > 1000.0 THEN CEIL(fee_rate / 1000.0) * 1000.0
-               END as bucket,
-               count(short_id) as count,
-               sum(capacity) as capacity
-        FROM (
-          SELECT CASE WHEN node1_public_key = ? THEN node2_fee_rate WHEN node2_public_key = ? THEN node1_fee_rate END as fee_rate,
-                 short_id as short_id,
-                 capacity as capacity
-          FROM channels
-          WHERE status = 1 AND (channels.node1_public_key = ? OR channels.node2_public_key = ?)
-        ) as fee_rate_table
-        GROUP BY bucket;
-      `;
-      const [inRows]: any[] = await DB.query(inQuery, [node_public_key, node_public_key, node_public_key, node_public_key]);
-
-      const outQuery = `
-        SELECT CASE WHEN fee_rate <= 10.0 THEN CEIL(fee_rate)
-                    WHEN (fee_rate > 10.0 and fee_rate <= 100.0) THEN CEIL(fee_rate / 10.0) * 10.0
-                    WHEN (fee_rate > 100.0 and fee_rate <= 1000.0) THEN CEIL(fee_rate / 100.0) * 100.0
-                    WHEN fee_rate > 1000.0 THEN CEIL(fee_rate / 1000.0) * 1000.0
-               END as bucket,
-               count(short_id) as count,
-               sum(capacity) as capacity
-        FROM (
-          SELECT CASE WHEN node1_public_key = ? THEN node1_fee_rate WHEN node2_public_key = ? THEN node2_fee_rate END as fee_rate,
-                 short_id as short_id,
-                 capacity as capacity
-          FROM channels
-          WHERE status = 1 AND (channels.node1_public_key = ? OR channels.node2_public_key = ?)
-        ) as fee_rate_table
-        GROUP BY bucket;
-      `;
-      const [outRows]: any[] = await DB.query(outQuery, [node_public_key, node_public_key, node_public_key, node_public_key]);
-
-      return {
-        incoming: inRows.length > 0 ? inRows : [],
-        outgoing: outRows.length > 0 ? outRows : [],
-      };
-    } catch (e) {
-      logger.err(`Cannot get node fee distribution for ${node_public_key}. Reason: ${(e instanceof Error ? e.message : e)}`);
-      throw e;
-    }
-  }
-
-  public async $getAllNodes(): Promise<any> {
-    try {
-      const query = `SELECT * FROM nodes`;
-      const [rows]: any = await DB.query(query);
-      return rows;
-    } catch (e) {
-      logger.err('$getAllNodes error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  public async $getNodeStats(public_key: string): Promise<any> {
-    try {
-      const query = `
-        SELECT UNIX_TIMESTAMP(added) AS added, capacity, channels
-        FROM node_stats
-        WHERE public_key = ?
-        ORDER BY added DESC
-      `;
-      const [rows]: any = await DB.query(query, [public_key]);
-      return rows;
-    } catch (e) {
-      logger.err('$getNodeStats error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  public async $getTopCapacityNodes(full: boolean): Promise<ITopNodesPerCapacity[]> {
-    try {
-      let rows: any;
-      let query: string;
-      if (full === false) {
-        query = `
-          SELECT nodes.public_key AS publicKey, IF(nodes.alias = '', SUBSTRING(nodes.public_key, 1, 20), alias) as alias,
-            nodes.capacity
-          FROM nodes
-          ORDER BY capacity DESC
-          LIMIT 6
-        `;
-
-        [rows] = await DB.query(query);
-      } else {
-        query = `
-          SELECT nodes.public_key AS publicKey, IF(nodes.alias = '', SUBSTRING(nodes.public_key, 1, 20), alias) as alias,
-            CAST(COALESCE(nodes.capacity, 0) as INT) as capacity,
-            CAST(COALESCE(nodes.channels, 0) as INT) as channels,
-            UNIX_TIMESTAMP(nodes.first_seen) as firstSeen, UNIX_TIMESTAMP(nodes.updated_at) as updatedAt,
-            geo_names_city.names as city, geo_names_country.names as country,
-            geo_names_iso.names as iso_code, geo_names_subdivision.names as subdivision
-          FROM nodes
-          LEFT JOIN geo_names geo_names_country ON geo_names_country.id = nodes.country_id AND geo_names_country.type = 'country'
-          LEFT JOIN geo_names geo_names_city ON geo_names_city.id = nodes.city_id AND geo_names_city.type = 'city'
-          LEFT JOIN geo_names geo_names_iso ON geo_names_iso.id = nodes.country_id AND geo_names_iso.type = 'country_iso_code'
-          LEFT JOIN geo_names geo_names_subdivision on geo_names_subdivision.id = nodes.subdivision_id AND geo_names_subdivision.type = 'division'
-          ORDER BY capacity DESC
-          LIMIT 100
-        `;
-
-        [rows] = await DB.query(query);
-        for (let i = 0; i < rows.length; ++i) {
-          rows[i].country = JSON.parse(rows[i].country);
-          rows[i].city = JSON.parse(rows[i].city);
-        }
-      }
-
-      return rows;
-    } catch (e) {
-      logger.err('$getTopCapacityNodes error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  public async $getTopChannelsNodes(full: boolean): Promise<ITopNodesPerChannels[]> {
-    try {
-      let rows: any;
-      let query: string;
-      if (full === false) {
-        query = `
-          SELECT
-            nodes.public_key as publicKey,
-            IF(nodes.alias = '', SUBSTRING(nodes.public_key, 1, 20), alias) as alias,
-            nodes.channels,
-            geo_names_city.names as city, geo_names_country.names as country,
-            geo_names_iso.names as iso_code, geo_names_subdivision.names as subdivision
-          FROM nodes
-          LEFT JOIN geo_names geo_names_country ON geo_names_country.id = nodes.country_id AND geo_names_country.type = 'country'
-          LEFT JOIN geo_names geo_names_city ON geo_names_city.id = nodes.city_id AND geo_names_city.type = 'city'
-          LEFT JOIN geo_names geo_names_iso ON geo_names_iso.id = nodes.country_id AND geo_names_iso.type = 'country_iso_code'
-          LEFT JOIN geo_names geo_names_subdivision on geo_names_subdivision.id = nodes.subdivision_id AND geo_names_subdivision.type = 'division'
-          ORDER BY channels DESC
-          LIMIT 6;
-        `;
-
-        [rows] = await DB.query(query);
-        for (let i = 0; i < rows.length; ++i) {
-          rows[i].country = JSON.parse(rows[i].country);
-          rows[i].city = JSON.parse(rows[i].city);
-        }
-      } else {
-        query = `
-          SELECT nodes.public_key AS publicKey, IF(nodes.alias = '', SUBSTRING(nodes.public_key, 1, 20), alias) as alias,
-            CAST(COALESCE(nodes.channels, 0) as INT) as channels,
-            CAST(COALESCE(nodes.capacity, 0) as INT) as capacity,
-            UNIX_TIMESTAMP(nodes.first_seen) as firstSeen, UNIX_TIMESTAMP(nodes.updated_at) as updatedAt,
-            geo_names_city.names as city, geo_names_country.names as country,
-            geo_names_iso.names as iso_code, geo_names_subdivision.names as subdivision
-          FROM nodes
-          LEFT JOIN geo_names geo_names_country ON geo_names_country.id = nodes.country_id AND geo_names_country.type = 'country'
-          LEFT JOIN geo_names geo_names_city ON geo_names_city.id = nodes.city_id AND geo_names_city.type = 'city'
-          LEFT JOIN geo_names geo_names_iso ON geo_names_iso.id = nodes.country_id AND geo_names_iso.type = 'country_iso_code'
-          LEFT JOIN geo_names geo_names_subdivision on geo_names_subdivision.id = nodes.subdivision_id AND geo_names_subdivision.type = 'division'
-          ORDER BY channels DESC
-          LIMIT 100
-        `;
-
-        [rows] = await DB.query(query);
-        for (let i = 0; i < rows.length; ++i) {
-          rows[i].country = JSON.parse(rows[i].country);
-          rows[i].city = JSON.parse(rows[i].city);
-        }
-      }
-
-      return rows;
-    } catch (e) {
-      logger.err('$getTopChannelsNodes error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  public async $getOldestNodes(full: boolean): Promise<ITopNodesPerChannels[]> {
-    try {
-      let [rows]: any[] = await DB.query('SELECT UNIX_TIMESTAMP(MAX(added)) as maxAdded FROM node_stats');
-      const latestDate = rows[0].maxAdded;
-
-      let query: string;
-      if (full === false) {
-        query = `
-          SELECT nodes.public_key, IF(nodes.alias = '', SUBSTRING(nodes.public_key, 1, 20), alias) as alias,
-            node_stats.channels
-          FROM node_stats
-          JOIN nodes ON nodes.public_key = node_stats.public_key
-          WHERE added = FROM_UNIXTIME(${latestDate})
-          ORDER BY first_seen
-          LIMIT 100;
-        `;
-
-        [rows] = await DB.query(query);
-      } else {
-        query = `
-          SELECT node_stats.public_key AS publicKey, IF(nodes.alias = '', SUBSTRING(node_stats.public_key, 1, 20), alias) as alias,
-            CAST(COALESCE(node_stats.channels, 0) as INT) as channels,
-            CAST(COALESCE(node_stats.capacity, 0) as INT) as capacity,
-            UNIX_TIMESTAMP(nodes.first_seen) as firstSeen, UNIX_TIMESTAMP(nodes.updated_at) as updatedAt,
-            geo_names_city.names as city, geo_names_country.names as country,
-            geo_names_iso.names as iso_code, geo_names_subdivision.names as subdivision
-          FROM node_stats
-          RIGHT JOIN nodes ON nodes.public_key = node_stats.public_key
-          LEFT JOIN geo_names geo_names_country ON geo_names_country.id = nodes.country_id AND geo_names_country.type = 'country'
-          LEFT JOIN geo_names geo_names_city ON geo_names_city.id = nodes.city_id AND geo_names_city.type = 'city'
-          LEFT JOIN geo_names geo_names_iso ON geo_names_iso.id = nodes.country_id AND geo_names_iso.type = 'country_iso_code'
-          LEFT JOIN geo_names geo_names_subdivision on geo_names_subdivision.id = nodes.subdivision_id AND geo_names_subdivision.type = 'division'
-          WHERE added = FROM_UNIXTIME(${latestDate})
-          ORDER BY first_seen
-          LIMIT 100
-        `;
-
-        [rows] = await DB.query(query);
-        for (let i = 0; i < rows.length; ++i) {
-          rows[i].country = JSON.parse(rows[i].country);
-          rows[i].city = JSON.parse(rows[i].city);
-        }
-      }
-
-      return rows;
-    } catch (e) {
-      logger.err('$getTopChannelsNodes error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  public async $searchNodeByPublicKeyOrAlias(search: string) {
-    try {
-      const publicKeySearch = search.replace('%', '') + '%';
-      const aliasSearch = search
-        .replace(/[-_.]/g, ' ') // Replace all -_. characters with empty space. Eg: "ln.nicehash" becomes "ln nicehash".  
-        .replace(/[^a-zA-Z0-9 ]/g, '') // Remove all special characters and keep just A to Z, 0 to 9.
-        .split(' ')
-        .filter(key => key.length)
-        .map((search) => '+' + search + '*').join(' ');
-      // %keyword% is wildcard search and can't be indexed so it's slower as the node database grow. keyword% can be indexed but then you can't search for "Nicehash" and get result for ln.nicehash.com. So we use fulltext index for words "ln, nicehash, com" and nicehash* will find it instantly.
-      const query = `SELECT public_key, alias, capacity, channels, status FROM nodes WHERE public_key LIKE ? OR MATCH alias_search AGAINST (? IN BOOLEAN MODE) ORDER BY capacity DESC LIMIT 10`;
-      const [rows]: any = await DB.query(query, [publicKeySearch, aliasSearch]);
-      return rows;
-    } catch (e) {
-      logger.err('$searchNodeByPublicKeyOrAlias error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  public async $getNodesISPRanking() {
-    try {
-      let query = '';
-
-      // List all channels and the two linked ISP
-      query = `
-        SELECT short_id, channels.capacity,
-          channels.node1_public_key AS node1PublicKey, isp1.names AS isp1, isp1.id as isp1ID,
-          channels.node2_public_key AS node2PublicKey, isp2.names AS isp2, isp2.id as isp2ID
-        FROM channels
-        JOIN nodes node1 ON node1.public_key = channels.node1_public_key
-        JOIN nodes node2 ON node2.public_key = channels.node2_public_key
-        JOIN geo_names isp1 ON isp1.id = node1.as_number
-        JOIN geo_names isp2 ON isp2.id = node2.as_number
-        WHERE channels.status = 1
-        ORDER BY short_id DESC
-      `;
-      const [channelsIsp]: any = await DB.query(query);
-
-      // Sum channels capacity and node count per ISP
-      const ispList = {};
-      for (const channel of channelsIsp) {
-        const isp1 = JSON.parse(channel.isp1);
-        const isp2 = JSON.parse(channel.isp2);
-
-        if (!ispList[isp1]) {
-          ispList[isp1] = {
-            ids: [channel.isp1ID],
-            capacity: 0,
-            channels: 0,
-            nodes: {},
-          };
-        } else if (ispList[isp1].ids.includes(channel.isp1ID) === false) {
-          ispList[isp1].ids.push(channel.isp1ID);
-        }
-
-        if (!ispList[isp2]) {
-          ispList[isp2] = {
-            ids: [channel.isp2ID],
-            capacity: 0,
-            channels: 0,
-            nodes: {},
-          };
-        } else if (ispList[isp2].ids.includes(channel.isp2ID) === false) {
-          ispList[isp2].ids.push(channel.isp2ID);
-        }
-        
-        ispList[isp1].capacity += channel.capacity;
-        ispList[isp1].channels += 1;
-        ispList[isp1].nodes[channel.node1PublicKey] = true;
-        ispList[isp2].capacity += channel.capacity;
-        ispList[isp2].channels += 1;
-        ispList[isp2].nodes[channel.node2PublicKey] = true;
-      }
-      
-      const ispRanking: any[] = [];
-      for (const isp of Object.keys(ispList)) {
-        ispRanking.push([
-          ispList[isp].ids.sort((a, b) => a - b).join(','),
-          isp,
-          ispList[isp].capacity,
-          ispList[isp].channels,
-          Object.keys(ispList[isp].nodes).length,
-        ]);
-      }
-
-      // Total active channels capacity
-      query = `SELECT SUM(capacity) AS capacity FROM channels WHERE status = 1`;
-      const [totalCapacity]: any = await DB.query(query);
-
-      // Get the total capacity of all channels which have at least one node on clearnet
-      query = `
-        SELECT SUM(capacity) as capacity
-        FROM (
-          SELECT capacity, GROUP_CONCAT(socket1.type, socket2.type) as networks
-          FROM channels
-          JOIN nodes_sockets socket1 ON node1_public_key = socket1.public_key
-          JOIN nodes_sockets socket2 ON node2_public_key = socket2.public_key
-          AND channels.status = 1
-          GROUP BY short_id
-        ) channels_tmp
-        WHERE channels_tmp.networks LIKE '%ipv%'
-      `;
-      const [clearnetCapacity]: any = await DB.query(query);
-
-      // Get the total capacity of all channels which have both nodes on Tor 
-      query = `
-        SELECT SUM(capacity) as capacity
-        FROM (
-          SELECT capacity, GROUP_CONCAT(socket1.type, socket2.type) as networks
-          FROM channels
-          JOIN nodes_sockets socket1 ON node1_public_key = socket1.public_key
-          JOIN nodes_sockets socket2 ON node2_public_key = socket2.public_key
-          AND channels.status = 1
-          GROUP BY short_id
-        ) channels_tmp
-        WHERE channels_tmp.networks NOT LIKE '%ipv%' AND
-          channels_tmp.networks NOT LIKE '%dns%' AND
-          channels_tmp.networks NOT LIKE '%websocket%'
-      `;
-      const [torCapacity]: any = await DB.query(query);
-
-      const clearnetCapacityValue = parseInt(clearnetCapacity[0].capacity, 10);
-      const torCapacityValue = parseInt(torCapacity[0].capacity, 10);
-      const unknownCapacityValue = parseInt(totalCapacity[0].capacity) - clearnetCapacityValue - torCapacityValue;
-
-      return {
-        clearnetCapacity: clearnetCapacityValue,
-        torCapacity: torCapacityValue,
-        unknownCapacity: unknownCapacityValue,
-        ispRanking: ispRanking,
-      };
-    } catch (e) {
-      logger.err(`Cannot get LN ISP ranking. Reason: ${e instanceof Error ? e.message : e}`);
-      throw e;
-    }
-  }
-
-  public async $getNodesPerCountry(countryId: string) {
-    try {
-      const query = `
-        SELECT nodes.public_key, CAST(COALESCE(nodes.capacity, 0) as INT) as capacity, CAST(COALESCE(nodes.channels, 0) as INT) as channels,
-          nodes.alias, UNIX_TIMESTAMP(nodes.first_seen) as first_seen, UNIX_TIMESTAMP(nodes.updated_at) as updated_at,
-          geo_names_city.names as city, geo_names_country.names as country,
-          geo_names_iso.names as iso_code, geo_names_subdivision.names as subdivision,
-          nodes.longitude, nodes.latitude, nodes.as_number, geo_names_isp.names as isp
-        FROM nodes
-        LEFT JOIN geo_names geo_names_country ON geo_names_country.id = nodes.country_id AND geo_names_country.type = 'country'
-        LEFT JOIN geo_names geo_names_city ON geo_names_city.id = nodes.city_id AND geo_names_city.type = 'city'
-        LEFT JOIN geo_names geo_names_iso ON geo_names_iso.id = nodes.country_id AND geo_names_iso.type = 'country_iso_code'
-        LEFT JOIN geo_names geo_names_subdivision on geo_names_subdivision.id = nodes.subdivision_id AND geo_names_subdivision.type = 'division'
-        LEFT JOIN geo_names geo_names_isp on geo_names_isp.id = nodes.as_number AND geo_names_isp.type = 'as_organization'
-        WHERE geo_names_country.id = ?
-        ORDER BY capacity DESC
-      `;
-
-      const [rows]: any = await DB.query(query, [countryId]);
-      for (let i = 0; i < rows.length; ++i) {
-        rows[i].country = JSON.parse(rows[i].country);
-        rows[i].city = JSON.parse(rows[i].city);
-        rows[i].subdivision = JSON.parse(rows[i].subdivision);
-        rows[i].isp = JSON.parse(rows[i].isp);
-      }
-      return rows;
-    } catch (e) {
-      logger.err(`Cannot get nodes for country id ${countryId}. Reason: ${e instanceof Error ? e.message : e}`);
-      throw e;
-    }
-  }
-
-  public async $getNodesPerISP(ISPId: string) {
-    try {
-      let query = `
-        SELECT channels.node1_public_key AS node1PublicKey, isp1.id as isp1ID,
-          channels.node2_public_key AS node2PublicKey, isp2.id as isp2ID
-        FROM channels
-        JOIN nodes node1 ON node1.public_key = channels.node1_public_key
-        JOIN nodes node2 ON node2.public_key = channels.node2_public_key
-        JOIN geo_names isp1 ON isp1.id = node1.as_number
-        JOIN geo_names isp2 ON isp2.id = node2.as_number
-        WHERE channels.status = 1 AND (node1.as_number IN (?) OR node2.as_number IN (?))
-        ORDER BY short_id DESC
-      `;
-
-      const IPSIds = ISPId.split(',');
-      const [rows]: any = await DB.query(query, [IPSIds, IPSIds]);
-      if (!rows || rows.length === 0) {
-        return [];
-      }
-
-      const nodes = {};
-
-      const intISPIds: number[] = [];
-      for (const ispId of IPSIds) {
-        intISPIds.push(parseInt(ispId, 10));
-      }
-
-      for (const channel of rows) {
-        if (intISPIds.includes(channel.isp1ID)) {
-          nodes[channel.node1PublicKey] = true;
-        }
-        if (intISPIds.includes(channel.isp2ID)) {
-          nodes[channel.node2PublicKey] = true;
-        }
-      }
-
-      query = `
-        SELECT nodes.public_key, CAST(COALESCE(nodes.capacity, 0) as INT) as capacity, CAST(COALESCE(nodes.channels, 0) as INT) as channels,
-          nodes.alias, UNIX_TIMESTAMP(nodes.first_seen) as first_seen, UNIX_TIMESTAMP(nodes.updated_at) as updated_at,
-          geo_names_city.names as city, geo_names_country.names as country,
-          geo_names_iso.names as iso_code, geo_names_subdivision.names as subdivision,
-          nodes.longitude, nodes.latitude
-        FROM nodes
-        LEFT JOIN geo_names geo_names_country ON geo_names_country.id = nodes.country_id AND geo_names_country.type = 'country'
-        LEFT JOIN geo_names geo_names_city ON geo_names_city.id = nodes.city_id AND geo_names_city.type = 'city'
-        LEFT JOIN geo_names geo_names_iso ON geo_names_iso.id = nodes.country_id AND geo_names_iso.type = 'country_iso_code'
-        LEFT JOIN geo_names geo_names_subdivision on geo_names_subdivision.id = nodes.subdivision_id AND geo_names_subdivision.type = 'division'
-        WHERE nodes.public_key IN (?)
-        ORDER BY capacity DESC
-      `;
-
-      const [rows2]: any = await DB.query(query, [Object.keys(nodes)]);
-      for (let i = 0; i < rows2.length; ++i) {
-        rows2[i].country = JSON.parse(rows2[i].country);
-        rows2[i].city = JSON.parse(rows2[i].city);
-        rows2[i].subdivision = JSON.parse(rows2[i].subdivision);
-      }
-      return rows2;
-
-    } catch (e) {
-      logger.err(`Cannot get nodes for ISP id ${ISPId}. Reason: ${e instanceof Error ? e.message : e}`);
-      throw e;
-    }
-  }
-
-  public async $getNodesCountries() {
-    try {
-      let query = `SELECT geo_names.names as names, geo_names_iso.names as iso_code, COUNT(DISTINCT nodes.public_key) as nodesCount, SUM(capacity) as capacity
-        FROM nodes
-        JOIN geo_names ON geo_names.id = nodes.country_id AND geo_names.type = 'country'
-        JOIN geo_names geo_names_iso ON geo_names_iso.id = nodes.country_id AND geo_names_iso.type = 'country_iso_code'
-        GROUP BY country_id
-        ORDER BY COUNT(DISTINCT nodes.public_key) DESC
-      `;
-      const [nodesCountPerCountry]: any = await DB.query(query);
-
-      query = `SELECT COUNT(*) as total FROM nodes WHERE country_id IS NOT NULL`;
-      const [nodesWithAS]: any = await DB.query(query);
-
-      const nodesPerCountry: any[] = [];
-      for (const country of nodesCountPerCountry) {
-        nodesPerCountry.push({
-          name: JSON.parse(country.names),
-          iso: country.iso_code, 
-          count: country.nodesCount,
-          share: Math.floor(country.nodesCount / nodesWithAS[0].total * 10000) / 100,
-          capacity: country.capacity,
-        })
-      }
-
-      return nodesPerCountry;
-    } catch (e) {
-      logger.err(`Cannot get nodes grouped by AS. Reason: ${e instanceof Error ? e.message : e}`);
-      throw e;
-    }
-  }
-
-  /**
-   * Save or update a node present in the graph
-   */
-  public async $saveNode(node: ILightningApi.Node): Promise<void> {
-    try {
-      // https://github.com/mempool/mempool/issues/3006
-      if ((node.last_update ?? 0) < 1514736061) { // January 1st 2018
-        node.last_update = null;
-      }
-  
-      const sockets = (node.addresses?.map(a => a.addr).join(',')) ?? '';
-      const query = `INSERT INTO nodes(
-          public_key,
-          first_seen,
-          updated_at,
-          alias,
-          alias_search,
-          color,
-          sockets,
-          status
-        )
-        VALUES (?, NOW(), FROM_UNIXTIME(?), ?, ?, ?, ?, 1)
-        ON DUPLICATE KEY UPDATE updated_at = FROM_UNIXTIME(?), alias = ?, alias_search = ?, color = ?, sockets = ?, status = 1`;
-
-      await DB.query(query, [
-        node.pub_key,
-        node.last_update,
-        node.alias,
-        this.aliasToSearchText(node.alias),
-        node.color,
-        sockets,
-        node.last_update,
-        node.alias,
-        this.aliasToSearchText(node.alias),
-        node.color,
-        sockets,
-      ]);
-    } catch (e) {
-      logger.err('$saveNode() error: ' + (e instanceof Error ? e.message : e));
-    }
-  }
-
-  /**
-   * Update node sockets
-   */
-  public async $updateNodeSockets(publicKey: string, sockets: {network: string; addr: string}[]): Promise<void> {
-    const formattedSockets = (sockets.map(a => a.addr).join(',')) ?? '';
-    try {
-      await DB.query(`UPDATE nodes SET sockets = ? WHERE public_key = ?`, [formattedSockets, publicKey]);
-    } catch (e) {
-      logger.err(`Cannot update node sockets for ${publicKey}. Reason: ${e instanceof Error ? e.message : e}`);
-    }
-  }
-
-  /**
-   * Set all nodes not in `nodesPubkeys` as inactive (status = 0)
-   */
-   public async $setNodesInactive(graphNodesPubkeys: string[]): Promise<void> {
-    if (graphNodesPubkeys.length === 0) {
-      return;
-    }
-
-    try {
-      const result = await DB.query<ResultSetHeader>(`
-        UPDATE nodes
-        SET status = 0
-        WHERE public_key NOT IN (
-          ${graphNodesPubkeys.map(pubkey => `"${pubkey}"`).join(',')}
-        )
-      `);
-      if (result[0].changedRows ?? 0 > 0) {
-        logger.debug(`Marked ${result[0].changedRows} nodes as inactive because they are not in the graph`, logger.tags.ln);
-      }
-    } catch (e) {
-      logger.err('$setNodesInactive() error: ' + (e instanceof Error ? e.message : e));
-    }
-  }
-
-  private aliasToSearchText(str: string): string {
-    return str.replace(/[-_.]/g, ' ').replace(/[^a-zA-Z0-9 ]/g, '');
-  }
-}
-
-export default new NodesApi();

backend/src/api/explorer/nodes.routes.ts

@@ -1,316 +0,0 @@
-import config from '../../config';
-import { Application, Request, Response } from 'express';
-import nodesApi from './nodes.api';
-import DB from '../../database';
-import { INodesRanking } from '../../mempool.interfaces';
-
-class NodesRoutes {
-  constructor() { }
-
-  public initRoutes(app: Application) {
-    app
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/world', this.$getWorldNodes)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/country/:country', this.$getNodesPerCountry)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/search/:search', this.$searchNode)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/isp-ranking', this.$getISPRanking)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/isp/:isp', this.$getNodesPerISP)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/countries', this.$getNodesCountries)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/rankings', this.$getNodesRanking)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/rankings/liquidity', this.$getTopNodesByCapacity)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/rankings/connectivity', this.$getTopNodesByChannels)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/rankings/age', this.$getOldestNodes)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/:public_key/statistics', this.$getHistoricalNodeStats)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/:public_key/fees/histogram', this.$getFeeHistogram)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/:public_key', this.$getNode)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/nodes/group/:name', this.$getNodeGroup)
-    ;
-  }
-
-  private async $searchNode(req: Request, res: Response) {
-    try {
-      const nodes = await nodesApi.$searchNodeByPublicKeyOrAlias(req.params.search);
-      res.json(nodes);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getNodeGroup(req: Request, res: Response) {
-    try {
-      let nodesList;
-      let nodes: any[] = [];
-      switch (config.MEMPOOL.NETWORK) {
-        case 'testnet':
-          nodesList = [
-            '032c7c7819276c4f706a04df1a0f1e10a5495994a7be4c1d3d28ca766e5a2b957b',
-            '025a7e38c2834dd843591a4d23d5f09cdeb77ddca85f673c2d944a14220ff14cf7',
-            '0395e2731a1673ef21d7a16a727c4fc4d4c35a861c428ce2c819c53d2b81c8bd55',
-            '032ab2028c0b614c6d87824e2373529652fd7e4221b4c70cc4da7c7005c49afcf0',
-            '029001b22fe70b48bee12d014df91982eb85ff1bd404ec772d5c83c4ee3e88d2c3',
-            '0212e2848d79f928411da5f2ff0a8c95ec6ccb5a09d2031b6f71e91309dcde63af',
-            '03e871a2229523d34f76e6311ff197cfe7f26c2fbec13554b93a46f4e710c47dab',
-            '032202ec98d976b0e928bd1d91924e8bd3eab07231fc39feb3737b010071073df8',
-            '02fa7c5a948d03d563a9f36940c2205a814e594d17c0042ced242c71a857d72605',
-            '039c14fdec2d958e3d14cebf657451bbd9e039196615785e82c917f274e3fb2205',
-            '033589bbcb233ffc416cefd5437c7f37e9d7cb7942d405e39e72c4c846d9b37f18',
-            '029293110441c6e2eacb57e1255bf6ef05c41a6a676fe474922d33c19f98a7d584',
-            '0235ad0b56ed8c42c4354444c24e971c05e769ec0b5fb0ccea42880095dc02ea2c',
-            '029700819a37afea630f80e6cc461f3fd3c4ace2598a21cfbbe64d1c78d0ee69a5',
-            '02c2d8b2dbf87c7894af2f1d321290e2fe6db5446cd35323987cee98f06e2e0075',
-            '030b0ca1ea7b1075716d2a555630e6fd47ef11bc7391fe68963ec06cf370a5e382',
-            '031adb9eb2d66693f85fa31a4adca0319ba68219f3ad5f9a2ef9b34a6b40755fa1',
-            '02ccd07faa47eda810ecf5591ccf5ca50f6c1034d0d175052898d32a00b9bae24f',
-          ];
-          break;
-        case 'signet':
-          nodesList = [
-            '03ddab321b760433cbf561b615ef62ac7d318630c5f51d523aaf5395b90b751956',
-            '033d92c7bfd213ef1b34c90e985fb5dc77f9ec2409d391492484e57a44c4aca1de',
-            '02ad010dda54253c1eb9efe38b0760657a3b43ecad62198c359c051c9d99d45781',
-            '025196512905b8a3f1597428b867bec63ec9a95e5089eb7dc7e63e2d2691669029',
-            '027c625aa1fbe3768db68ebcb05b53b6dc0ce68b7b54b8900d326d167363e684fe',
-            '03f1629af3101fcc56b7aac2667016be84e3defbf3d0c8719f836c9b41c9a57a43',
-            '02dfb81e2f7a3c4c9e8a51b70ef82b4a24549cc2fab1f5b2fd636501774a918991',
-            '02d01ccf832944c68f10d39006093769c5b8bda886d561b128534e313d729fdb34',
-            '02499ed23027d4698a6904ff4ec1b6085a61f10b9a6937f90438f9947e38e8ea86',
-            '038310e3a786340f2bd7770704c7ccfe560fd163d9a1c99d67894597419d12cbf7',
-            '03e5e9d879b72c7d67ecd483bae023bd33e695bb32b981a4021260f7b9d62bc761',
-            '028d16e1a0ace4c0c0a421536d8d32ce484dfe6e2f726b7b0e7c30f12a195f8cc7',
-            '02ff690d06c187ab994bf83c5a2114fe5bf50112c2c817af0f788f736be9fa2070',
-            '02a9f570c51a2526a5ee85802e88f9281bed771eb66a0c8a7d898430dd5d0eae45',
-            '038c3de773255d3bd7a50e31e58d423baac5c90826a74d75e64b74c95475de1097',
-            '0242c7f7d315095f37ad1421ae0a2fc967d4cbe65b61b079c5395a769436959853',
-            '02a909e70eb03742f12666ebb1f56ac42a5fbaab0c0e8b5b1df4aa9f10f8a09240',
-            '03a26efa12489803c07f3ac2f1dba63812e38f0f6e866ce3ebb34df7de1f458cd2',
-          ];
-          break;
-        default:
-          nodesList = [
-            '03fbc17549ec667bccf397ababbcb4cdc0e3394345e4773079ab2774612ec9be61',
-            '03da9a8623241ccf95f19cd645c6cecd4019ac91570e976eb0a128bebbc4d8a437',
-            '03ca5340cf85cb2e7cf076e489f785410838de174e40be62723e8a60972ad75144',
-            '0238bd27f02d67d6c51e269692bc8c9a32357a00e7777cba7f4f1f18a2a700b108',
-            '03f983dcabed6baa1eab5b56c8b2e8fdc846ab3fd931155377897335e85a9fa57c',
-            '03e399589533581e48796e29a825839a010036a61b20744fda929d6709fcbffcc5',
-            '021f5288b5f72c42cd0d8801086af7ce09a816d8ee9a4c47a4b436399b26cb601a',
-            '032b01b7585f781420cd4148841a82831ba37fa952342052cec16750852d4f2dd9',
-            '02848036488d4b8fb1f1c4064261ec36151f43b085f0b51bd239ade3ddfc940c34',
-            '02b6b1640fe029e304c216951af9fbefdb23b0bdc9baaf327540d31b6107841fdf',
-            '03694289827203a5b3156d753071ddd5bf92e371f5a462943f9555eef6d2d6606c',
-            '0283d850db7c3e8ea7cc9c4abc7afaab12bbdf72b677dcba1d608350d2537d7d43',
-            '02521287789f851268a39c9eccc9d6180d2c614315b583c9e6ae0addbd6d79df06',
-            '0258c2a7b7f8af2585b4411b1ec945f70988f30412bb1df179de941f14d0b1bc3e',
-            '03c3389ff1a896f84d921ed01a19fc99c6724ce8dc4b960cd3b7b2362b62cd60d7',
-            '038d118996b3eaa15dcd317b32a539c9ecfdd7698f204acf8a087336af655a9192',
-            '02a928903d93d78877dacc3642b696128a3636e9566dd42d2d132325b2c8891c09',
-            '0328cd17f3a9d3d90b532ade0d1a67e05eb8a51835b3dce0a2e38eac04b5a62a57',
-          ];
-      }
-
-      for (let pubKey of nodesList) {
-        try {
-          const node = await nodesApi.$getNode(pubKey);
-          if (node) {
-            nodes.push(node);
-          }
-        } catch (e) {}
-      }
-      
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(nodes);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getNode(req: Request, res: Response) {
-    try {
-      const node = await nodesApi.$getNode(req.params.public_key);
-      if (!node) {
-        res.status(404).send('Node not found');
-        return;
-      }
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(node);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getHistoricalNodeStats(req: Request, res: Response) {
-    try {
-      const statistics = await nodesApi.$getNodeStats(req.params.public_key);
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(statistics);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getFeeHistogram(req: Request, res: Response) {
-    try {
-      const node = await nodesApi.$getFeeHistogram(req.params.public_key);
-      if (!node) {
-        res.status(404).send('Node not found');
-        return;
-      }
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(node);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getNodesRanking(req: Request, res: Response): Promise<void> {
-    try {
-      const topCapacityNodes = await nodesApi.$getTopCapacityNodes(false);
-      const topChannelsNodes = await nodesApi.$getTopChannelsNodes(false);
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(<INodesRanking>{
-        topByCapacity: topCapacityNodes,
-        topByChannels: topChannelsNodes,
-      });
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getTopNodesByCapacity(req: Request, res: Response): Promise<void> {
-    try {
-      const topCapacityNodes = await nodesApi.$getTopCapacityNodes(true);
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(topCapacityNodes);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getTopNodesByChannels(req: Request, res: Response): Promise<void> {
-    try {
-      const topCapacityNodes = await nodesApi.$getTopChannelsNodes(true);
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(topCapacityNodes);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getOldestNodes(req: Request, res: Response): Promise<void> {
-    try {
-      const topCapacityNodes = await nodesApi.$getOldestNodes(true);
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(topCapacityNodes);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getISPRanking(req: Request, res: Response): Promise<void> {
-    try {
-      const nodesPerAs = await nodesApi.$getNodesISPRanking();
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 600).toUTCString());
-      res.json(nodesPerAs);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getWorldNodes(req: Request, res: Response) {
-    try {
-      const worldNodes = await nodesApi.$getWorldNodes();
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 600).toUTCString());
-      res.json(worldNodes);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getNodesPerCountry(req: Request, res: Response) {
-    try {
-      const [country]: any[] = await DB.query(
-        `SELECT geo_names.id, geo_names_country.names as country_names
-        FROM geo_names
-        JOIN geo_names geo_names_country on geo_names.id = geo_names_country.id AND geo_names_country.type = 'country'
-        WHERE geo_names.type = 'country_iso_code' AND geo_names.names = ?`,
-        [req.params.country]
-      );
-
-      if (country.length === 0) {
-        res.status(404).send(`This country does not exist or does not host any lightning nodes on clearnet`);
-        return;
-      }
-
-      const nodes = await nodesApi.$getNodesPerCountry(country[0].id);
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json({
-        country: JSON.parse(country[0].country_names),
-        nodes: nodes,
-      });
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getNodesPerISP(req: Request, res: Response) {
-    try {
-      const [isp]: any[] = await DB.query(
-        `SELECT geo_names.names as isp_name
-        FROM geo_names
-        WHERE geo_names.type = 'as_organization' AND geo_names.id = ?`,
-        [req.params.isp]
-      );
-
-      if (isp.length === 0) {
-        res.status(404).send(`This ISP does not exist or does not host any lightning nodes on clearnet`);
-        return;
-      }
-
-      const nodes = await nodesApi.$getNodesPerISP(req.params.isp);
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json({
-        isp: JSON.parse(isp[0].isp_name),
-        nodes: nodes,
-      });
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getNodesCountries(req: Request, res: Response) {
-    try {
-      const nodesPerAs = await nodesApi.$getNodesCountries();
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 600).toUTCString());
-      res.json(nodesPerAs);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-}
-
-export default new NodesRoutes();

backend/src/api/explorer/statistics.api.ts

@@ -1,53 +0,0 @@
-import logger from '../../logger';
-import DB from '../../database';
-import { Common } from '../common';
-
-class StatisticsApi {
-  public async $getStatistics(interval: string | null = null): Promise<any> {
-    interval = Common.getSqlInterval(interval);
-
-    let query = `SELECT UNIX_TIMESTAMP(added) AS added, channel_count, total_capacity,
-      tor_nodes, clearnet_nodes, unannounced_nodes, clearnet_tor_nodes
-      FROM lightning_stats`;
-
-    if (interval) {
-      query += ` WHERE added BETWEEN DATE_SUB(NOW(), INTERVAL ${interval}) AND NOW()`;
-    }
-
-    query += ` ORDER BY added DESC`;
-
-    try {
-      const [rows]: any = await DB.query(query);
-      return rows;
-    } catch (e) {
-      logger.err('$getStatistics error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  public async $getLatestStatistics(): Promise<any> {
-    try {
-      const [rows]: any = await DB.query(`SELECT * FROM lightning_stats ORDER BY added DESC LIMIT 1`);
-      const [rows2]: any = await DB.query(`SELECT * FROM lightning_stats WHERE DATE(added) = DATE(NOW() - INTERVAL 7 DAY)`);
-      return {
-        latest: rows[0],
-        previous: rows2[0],
-      };
-    } catch (e) {
-      logger.err('$getLatestStatistics error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-
-  public async $getStatisticsCount(): Promise<number> {
-    try {
-      const [rows]: any = await DB.query(`SELECT count(*) as count FROM lightning_stats`);
-      return rows[0].count;
-    } catch (e) {
-      logger.err('$getLatestStatistics error: ' + (e instanceof Error ? e.message : e));
-      throw e;
-    }
-  }
-}
-
-export default new StatisticsApi();

backend/src/api/fee-api.ts

@@ -1,52 +1,47 @@
-import { MempoolBlock } from '../mempool.interfaces';
-import { Common } from './common';
-import mempool from './mempool';
-import projectedBlocks from './mempool-blocks';
+import projectedBlocks from './projected-blocks';
+import { DB } from '../database';
 
 class FeeApi {
   constructor() { }
 
-  defaultFee = Common.isLiquid() ? 0.1 : 1;
-
   public getRecommendedFee() {
-    const pBlocks = projectedBlocks.getMempoolBlocks();
-    const mPool = mempool.getMempoolInfo();
-    const minimumFee = Math.ceil(mPool.mempoolminfee * 100000);
-
+    const pBlocks = projectedBlocks.getProjectedBlocks();
     if (!pBlocks.length) {
       return {
-        'fastestFee': this.defaultFee,
-        'halfHourFee': this.defaultFee,
-        'hourFee': this.defaultFee,
-        'economyFee': minimumFee,
-        'minimumFee': minimumFee,
+        'fastestFee': 0,
+        'halfHourFee': 0,
+        'hourFee': 0,
       };
     }
+    let firstMedianFee = Math.ceil(pBlocks[0].medianFee);
 
-    const firstMedianFee = this.optimizeMedianFee(pBlocks[0], pBlocks[1]);
-    const secondMedianFee = pBlocks[1] ? this.optimizeMedianFee(pBlocks[1], pBlocks[2], firstMedianFee) : this.defaultFee;
-    const thirdMedianFee = pBlocks[2] ? this.optimizeMedianFee(pBlocks[2], pBlocks[3], secondMedianFee) : this.defaultFee;
+    if (pBlocks.length === 1 && pBlocks[0].blockWeight <= 2000000) {
+      firstMedianFee = 1;
+    }
+
+    const secondMedianFee = pBlocks[1] ? Math.ceil(pBlocks[1].medianFee) : firstMedianFee;
+    const thirdMedianFee = pBlocks[2] ? Math.ceil(pBlocks[2].medianFee) : secondMedianFee;
 
     return {
       'fastestFee': firstMedianFee,
       'halfHourFee': secondMedianFee,
       'hourFee': thirdMedianFee,
-      'economyFee': Math.min(2 * minimumFee, thirdMedianFee),
-      'minimumFee': minimumFee,
     };
   }
 
-  private optimizeMedianFee(pBlock: MempoolBlock, nextBlock: MempoolBlock | undefined, previousFee?: number): number {
-    const useFee = previousFee ? (pBlock.medianFee + previousFee) / 2 : pBlock.medianFee;
-    if (pBlock.blockVSize <= 500000) {
-      return this.defaultFee;
+  public async $getTransactionsForBlock(blockHeight: number): Promise<any[]> {
+    try {
+      const connection = await DB.pool.getConnection();
+      const query = `SELECT feePerVsize AS fpv FROM transactions WHERE blockheight = ? ORDER BY feePerVsize ASC`;
+      const [rows] = await connection.query<any>(query, [blockHeight]);
+      connection.release();
+      return rows;
+    } catch (e) {
+      console.log('$getTransactionsForBlock() error', e);
+      return [];
     }
-    if (pBlock.blockVSize <= 950000 && !nextBlock) {
-      const multiplier = (pBlock.blockVSize - 500000) / 500000;
-      return Math.max(Math.round(useFee * multiplier), this.defaultFee);
-    }
-    return Math.ceil(useFee);
   }
+
 }
 
 export default new FeeApi();

backend/src/api/fetch-version.ts

@@ -1,37 +0,0 @@
-import fs from 'fs';
-import path from "path";
-const { spawnSync } = require('child_process');
-
-function getVersion(): string {
-  const packageJson = fs.readFileSync('package.json').toString();
-  return JSON.parse(packageJson).version;
-}
-
-function getGitCommit(): string {
-  if (process.env.MEMPOOL_COMMIT_HASH) {
-    return process.env.MEMPOOL_COMMIT_HASH;
-  } else {
-    const gitRevParse = spawnSync('git', ['rev-parse', '--short', 'HEAD']);
-    if (!gitRevParse.error) {
-      const output = gitRevParse.stdout.toString('utf-8').replace(/[\n\r\s]+$/, '');
-      if (output) {
-        return output;
-      } else {
-        console.log('Could not fetch git commit: No repo available');
-      }
-    } else if (gitRevParse.error.code === 'ENOENT') {
-      console.log('Could not fetch git commit: Command `git` is unavailable');
-    }
-  }
-  return '?';
-}
-
-const versionInfo = {
-  version: getVersion(),
-  gitCommit: getGitCommit()
-}
-
-fs.writeFileSync(
-  path.join(__dirname, 'version.json'),
-  JSON.stringify(versionInfo, null, 2) + "\n"
-);

backend/src/api/fiat-conversion.ts

@@ -0,0 +1,31 @@
+import * as request from 'request';
+
+class FiatConversion {
+  private tickers = {
+    'BTCUSD': {
+      'USD': 4110.78
+    },
+  };
+
+  constructor() { }
+
+  public startService() {
+    setInterval(this.updateCurrency.bind(this), 1000 * 60 * 60);
+    this.updateCurrency();
+  }
+
+  public getTickers() {
+    return this.tickers;
+  }
+
+  private updateCurrency() {
+    request('https://api.opennode.co/v1/rates', { json: true }, (err, res, body) => {
+      if (err) { return console.log(err); }
+      if (body && body.data) {
+        this.tickers = body.data;
+      }
+    });
+  }
+}
+
+export default new FiatConversion();

backend/src/api/lightning/clightning/clightning-client.ts

@@ -1,270 +0,0 @@
-// Imported from https://github.com/shesek/lightning-client-js
-
-'use strict';
-
-const methods = [
-  'addgossip',
-  'autocleaninvoice',
-  'check',
-  'checkmessage',
-  'close',
-  'connect',
-  'createinvoice',
-  'createinvoicerequest',
-  'createoffer',
-  'createonion',
-  'decode',
-  'decodepay',
-  'delexpiredinvoice',
-  'delinvoice',
-  'delpay',
-  'dev-listaddrs',
-  'dev-rescan-outputs',
-  'disableoffer',
-  'disconnect',
-  'estimatefees',
-  'feerates',
-  'fetchinvoice',
-  'fundchannel',
-  'fundchannel_cancel',
-  'fundchannel_complete',
-  'fundchannel_start',
-  'fundpsbt',
-  'getchaininfo',
-  'getinfo',
-  'getlog',
-  'getrawblockbyheight',
-  'getroute',
-  'getsharedsecret',
-  'getutxout',
-  'help',
-  'invoice',
-  'keysend',
-  'legacypay',
-  'listchannels',
-  'listconfigs',
-  'listforwards',
-  'listfunds',
-  'listinvoices',
-  'listnodes',
-  'listoffers',
-  'listpays',
-  'listpeers',
-  'listsendpays',
-  'listtransactions',
-  'multifundchannel',
-  'multiwithdraw',
-  'newaddr',
-  'notifications',
-  'offer',
-  'offerout',
-  'openchannel_abort',
-  'openchannel_bump',
-  'openchannel_init',
-  'openchannel_signed',
-  'openchannel_update',
-  'pay',
-  'payersign',
-  'paystatus',
-  'ping',
-  'plugin',
-  'reserveinputs',
-  'sendinvoice',
-  'sendonion',
-  'sendonionmessage',
-  'sendpay',
-  'sendpsbt',
-  'sendrawtransaction',
-  'setchannelfee',
-  'signmessage',
-  'signpsbt',
-  'stop',
-  'txdiscard',
-  'txprepare',
-  'txsend',
-  'unreserveinputs',
-  'utxopsbt',
-  'waitanyinvoice',
-  'waitblockheight',
-  'waitinvoice',
-  'waitsendpay',
-  'withdraw'
-];
-
-
-import EventEmitter from 'events';
-import { existsSync, statSync } from 'fs';
-import { createConnection, Socket } from 'net';
-import { homedir } from 'os';
-import path from 'path';
-import { createInterface, Interface } from 'readline';
-import logger from '../../../logger';
-import { AbstractLightningApi } from '../lightning-api-abstract-factory';
-import { ILightningApi } from '../lightning-api.interface';
-import { convertAndmergeBidirectionalChannels, convertNode } from './clightning-convert';
-
-class LightningError extends Error {
-  type: string = 'lightning';
-  message: string = 'lightning-client error';
-
-  constructor(error) {
-    super();
-    this.type = error.type;
-    this.message = error.message;
-  }
-}
-
-const defaultRpcPath = path.join(homedir(), '.lightning')
-  , fStat = (...p) => statSync(path.join(...p))
-  , fExists = (...p) => existsSync(path.join(...p))
-
-export default class CLightningClient extends EventEmitter implements AbstractLightningApi {
-  private rpcPath: string;
-  private reconnectWait: number;
-  private reconnectTimeout;
-  private reqcount: number;
-  private client: Socket;
-  private rl: Interface;
-  private clientConnectionPromise: Promise<unknown>;
-
-  constructor(rpcPath = defaultRpcPath) {
-    if (!path.isAbsolute(rpcPath)) {
-      throw new Error('The rpcPath must be an absolute path');
-    }
-
-    if (!fExists(rpcPath) || !fStat(rpcPath).isSocket()) {
-      // network directory provided, use the lightning-rpc within in
-      if (fExists(rpcPath, 'lightning-rpc')) {
-        rpcPath = path.join(rpcPath, 'lightning-rpc');
-      }
-
-      // main data directory provided, default to using the bitcoin mainnet subdirectory
-      // to be removed in v0.2.0
-      else if (fExists(rpcPath, 'bitcoin', 'lightning-rpc')) {
-        logger.warn(`${rpcPath}/lightning-rpc is missing, using the bitcoin mainnet subdirectory at ${rpcPath}/bitcoin instead.`, logger.tags.ln)
-        logger.warn(`specifying the main lightning data directory is deprecated, please specify the network directory explicitly.\n`, logger.tags.ln)
-        rpcPath = path.join(rpcPath, 'bitcoin', 'lightning-rpc')
-      }
-    }
-
-    logger.debug(`Connecting to ${rpcPath}`, logger.tags.ln);
-
-    super();
-    this.rpcPath = rpcPath;
-    this.reconnectWait = 0.5;
-    this.reconnectTimeout = null;
-    this.reqcount = 0;
-
-    const _self = this;
-
-    this.client = createConnection(rpcPath).on(
-      'error', () => {
-        _self.increaseWaitTime();
-        _self.reconnect();
-      }
-    );
-    this.rl = createInterface({ input: this.client }).on(
-      'error', () => {
-        _self.increaseWaitTime();
-        _self.reconnect();
-      }
-    );
-
-    this.clientConnectionPromise = new Promise<void>(resolve => {
-      _self.client.on('connect', () => {
-        logger.info(`CLightning client connected`, logger.tags.ln);
-        _self.reconnectWait = 1;
-        resolve();
-      });
-
-      _self.client.on('end', () => {
-        logger.err(`CLightning client connection closed, reconnecting`, logger.tags.ln);
-        _self.increaseWaitTime();
-        _self.reconnect();
-      });
-
-      _self.client.on('error', error => {
-        logger.err(`CLightning client connection error: ${error}`, logger.tags.ln);
-        _self.increaseWaitTime();
-        _self.reconnect();
-      });
-    });
-
-    this.rl.on('line', line => {
-      line = line.trim();
-      if (!line) {
-        return;
-      }
-      const data = JSON.parse(line);
-      _self.emit('res:' + data.id, data);
-    });
-  }
-
-  increaseWaitTime(): void {
-    if (this.reconnectWait >= 16) {
-      this.reconnectWait = 16;
-    } else {
-      this.reconnectWait *= 2;
-    }
-  }
-
-  reconnect(): void {
-    const _self = this;
-
-    if (this.reconnectTimeout) {
-      return;
-    }
-
-    this.reconnectTimeout = setTimeout(() => {
-      logger.debug(`Trying to reconnect...`, logger.tags.ln);
-
-      _self.client.connect(_self.rpcPath);
-      _self.reconnectTimeout = null;
-    }, this.reconnectWait * 1000);
-  }
-
-  call(method, args = []): Promise<any> {
-    const _self = this;
-
-    const callInt = ++this.reqcount;
-    const sendObj = {
-      jsonrpc: '2.0',
-      method,
-      params: args,
-      id: '' + callInt
-    };
-
-
-    // Wait for the client to connect
-    return this.clientConnectionPromise
-      .then(() => new Promise((resolve, reject) => {
-        // Wait for a response
-        this.once('res:' + callInt, res => res.error == null
-          ? resolve(res.result)
-          : reject(new LightningError(res.error))
-        );
-
-        // Send the command
-        _self.client.write(JSON.stringify(sendObj));
-      }));
-  }
-
-  async $getNetworkGraph(): Promise<ILightningApi.NetworkGraph> {
-    const listnodes: any[] = await this.call('listnodes');
-    const listchannels: any[] = await this.call('listchannels');
-    const channelsList = await convertAndmergeBidirectionalChannels(listchannels['channels']);
-
-    return {
-      nodes: listnodes['nodes'].map(node => convertNode(node)),
-      edges: channelsList,
-    };
-  }
-}
-
-const protify = s => s.replace(/-([a-z])/g, m => m[1].toUpperCase());
-
-methods.forEach(k => {
-  CLightningClient.prototype[protify(k)] = function (...args: any) {
-    return this.call(k, args);
-  };
-});

backend/src/api/lightning/clightning/clightning-convert.ts

@@ -1,158 +0,0 @@
-import { ILightningApi } from '../lightning-api.interface';
-import FundingTxFetcher from '../../../tasks/lightning/sync-tasks/funding-tx-fetcher';
-import logger from '../../../logger';
-import { Common } from '../../common';
-import config from '../../../config';
-
-/**
- * Convert a clightning "listnode" entry to a lnd node entry
- */
-export function convertNode(clNode: any): ILightningApi.Node {
-  let custom_records: { [type: number]: string } | undefined = undefined;
-  if (clNode.option_will_fund) {
-    try {
-      custom_records = { '1': Buffer.from(clNode.option_will_fund.compact_lease || '', 'hex').toString('base64') };
-    } catch (e) {
-      logger.err(`Cannot decode option_will_fund compact_lease for ${clNode.nodeid}). Reason: ` + (e instanceof Error ? e.message : e));
-      custom_records = undefined;
-    }
-  }
-  return {
-    alias: clNode.alias ?? '',
-    color: `#${clNode.color ?? ''}`,
-    features: [], // TODO parse and return clNode.feature
-    pub_key: clNode.nodeid,
-    addresses: clNode.addresses?.map((addr) => {
-      let address = addr.address;
-      if (addr.type === 'ipv6') {
-        address = `[${address}]`;
-      }
-      return {
-        network: addr.type,
-        addr: `${address}:${addr.port}`
-      };
-    }) ?? [],
-    last_update: clNode?.last_timestamp ?? 0,
-    custom_records
-  };
-}
-
-/**
- * Convert clightning "listchannels" response to lnd "describegraph.edges" format
- */
-export async function convertAndmergeBidirectionalChannels(clChannels: any[]): Promise<ILightningApi.Channel[]> {
-  logger.debug(`Converting clightning nodes and channels to lnd graph format`, logger.tags.ln);
-
-  let loggerTimer = new Date().getTime() / 1000;
-  let channelProcessed = 0;
-
-  const consolidatedChannelList: ILightningApi.Channel[] = [];
-  const clChannelsDict = {};
-  const clChannelsDictCount = {};
-
-  for (const clChannel of clChannels) {
-    if (!clChannelsDict[clChannel.short_channel_id]) {
-      clChannelsDict[clChannel.short_channel_id] = clChannel;
-      clChannelsDictCount[clChannel.short_channel_id] = 1;
-    } else {
-      const fullChannel = await buildFullChannel(clChannel, clChannelsDict[clChannel.short_channel_id]);
-      if (fullChannel !== null) {
-        consolidatedChannelList.push(fullChannel);
-        delete clChannelsDict[clChannel.short_channel_id];
-        clChannelsDictCount[clChannel.short_channel_id]++;
-      }
-    }
-
-    const elapsedSeconds = Math.round((new Date().getTime() / 1000) - loggerTimer);
-    if (elapsedSeconds > config.LIGHTNING.LOGGER_UPDATE_INTERVAL) {
-      logger.info(`Building complete channels from clightning output. Channels processed: ${channelProcessed + 1} of ${clChannels.length}`, logger.tags.ln);
-      loggerTimer = new Date().getTime() / 1000;
-    }
-
-    ++channelProcessed;
-  }
-
-  channelProcessed = 0;
-  const keys = Object.keys(clChannelsDict);
-  for (const short_channel_id of keys) {
-    const incompleteChannel = await buildIncompleteChannel(clChannelsDict[short_channel_id]);
-    if (incompleteChannel !== null) {
-      consolidatedChannelList.push(incompleteChannel);
-    }
-
-    const elapsedSeconds = Math.round((new Date().getTime() / 1000) - loggerTimer);
-    if (elapsedSeconds > config.LIGHTNING.LOGGER_UPDATE_INTERVAL) {
-      logger.info(`Building partial channels from clightning output. Channels processed: ${channelProcessed + 1} of ${keys.length}`);
-      loggerTimer = new Date().getTime() / 1000;
-    }
-
-    channelProcessed++;
-  }
-
-  return consolidatedChannelList;
-}
-
-/**
- * Convert two clightning "getchannels" entries into a full a lnd "describegraph.edges" format
- * In this case, clightning knows the channel policy for both nodes
- */
-async function buildFullChannel(clChannelA: any, clChannelB: any): Promise<ILightningApi.Channel | null> {
-  const lastUpdate = Math.max(clChannelA.last_update ?? 0, clChannelB.last_update ?? 0);
-
-  const tx = await FundingTxFetcher.$fetchChannelOpenTx(clChannelA.short_channel_id);
-  if (!tx) {
-    return null;
-  }
-  const parts = clChannelA.short_channel_id.split('x');
-  const outputIdx = parts[2];
-
-  return {
-    channel_id: Common.channelShortIdToIntegerId(clChannelA.short_channel_id),
-    capacity: clChannelA.satoshis,
-    last_update: lastUpdate,
-    node1_policy: convertPolicy(clChannelA),
-    node2_policy: convertPolicy(clChannelB),
-    chan_point: `${tx.txid}:${outputIdx}`,
-    node1_pub: clChannelA.source,
-    node2_pub: clChannelB.source,
-  };
-}
-
-/**
- * Convert one clightning "getchannels" entry into a full a lnd "describegraph.edges" format
- * In this case, clightning knows the channel policy of only one node
- */
-async function buildIncompleteChannel(clChannel: any): Promise<ILightningApi.Channel | null> {
-  const tx = await FundingTxFetcher.$fetchChannelOpenTx(clChannel.short_channel_id);
-  if (!tx) {
-    return null;
-  }
-  const parts = clChannel.short_channel_id.split('x');
-  const outputIdx = parts[2];
-
-  return {
-    channel_id: Common.channelShortIdToIntegerId(clChannel.short_channel_id),
-    capacity: clChannel.satoshis,
-    last_update: clChannel.last_update ?? 0,
-    node1_policy: convertPolicy(clChannel),
-    node2_policy: null,
-    chan_point: `${tx.txid}:${outputIdx}`,
-    node1_pub: clChannel.source,
-    node2_pub: clChannel.destination,
-  };
-}
-
-/**
- * Convert a clightning "listnode" response to a lnd channel policy format
- */
-function convertPolicy(clChannel: any): ILightningApi.RoutingPolicy {
-  return {
-    time_lock_delta: clChannel.delay,
-    min_htlc: clChannel.htlc_minimum_msat.slice(0, -4),
-    max_htlc_msat: clChannel.htlc_maximum_msat.slice(0, -4),
-    fee_base_msat: clChannel.base_fee_millisatoshi,
-    fee_rate_milli_msat: clChannel.fee_per_millionth,
-    disabled: !clChannel.active,
-    last_update: clChannel.last_update ?? 0,
-  };
-}

backend/src/api/lightning/lightning-api-abstract-factory.ts

@@ -1,5 +0,0 @@
-import { ILightningApi } from './lightning-api.interface';
-
-export interface AbstractLightningApi {
-  $getNetworkGraph(): Promise<ILightningApi.NetworkGraph>;
-}

backend/src/api/lightning/lightning-api-factory.ts

@@ -1,16 +0,0 @@
-import config from '../../config';
-import CLightningClient from './clightning/clightning-client';
-import { AbstractLightningApi } from './lightning-api-abstract-factory';
-import LndApi from './lnd/lnd-api';
-
-function lightningApiFactory(): AbstractLightningApi {
-  switch (config.LIGHTNING.ENABLED === true && config.LIGHTNING.BACKEND) {
-    case 'cln':
-      return new CLightningClient(config.CLIGHTNING.SOCKET);
-    case 'lnd':
-    default:
-      return new LndApi();
-  }
-}
-
-export default lightningApiFactory();

backend/src/api/lightning/lightning-api.interface.ts

@@ -1,92 +0,0 @@
-export namespace ILightningApi {
-  export interface NetworkInfo {
-    graph_diameter: number;
-    avg_out_degree: number;
-    max_out_degree: number;
-    num_nodes: number;
-    num_channels: number;
-    total_network_capacity: string;
-    avg_channel_size: number;
-    min_channel_size: string;
-    max_channel_size: string;
-    median_channel_size_sat: string;
-    num_zombie_chans: string;
-  }
-
-  export interface NetworkGraph {
-    nodes: Node[];
-    edges: Channel[];
-  }
-
-  export interface Channel {
-    channel_id: string;
-    chan_point: string;
-    last_update: number | null;
-    node1_pub: string;
-    node2_pub: string;
-    capacity: string;
-    node1_policy: RoutingPolicy | null;
-    node2_policy: RoutingPolicy | null;
-  }
-
-  export interface RoutingPolicy {
-    time_lock_delta: number;
-    min_htlc: string;
-    fee_base_msat: string;
-    fee_rate_milli_msat: string;
-    disabled: boolean;
-    max_htlc_msat: string;
-    last_update: number | null;
-  }
-
-  export interface Node {
-    last_update: number | null;
-    pub_key: string;
-    alias: string;
-    addresses: {
-      network: string;
-      addr: string;
-    }[];
-    color: string;
-    features: { [key: number]: Feature };
-    custom_records?: { [type: number]: string };
-  }
-
-  export interface Info {
-    identity_pubkey: string;
-    alias: string;
-    num_pending_channels: number;
-    num_active_channels: number;
-    num_peers: number;
-    block_height: number;
-    block_hash: string;
-    synced_to_chain: boolean;
-    testnet: boolean;
-    uris: string[];
-    best_header_timestamp: string;
-    version: string;
-    num_inactive_channels: number;
-    chains: {
-      chain: string;
-      network: string;
-    }[];
-    color: string;
-    synced_to_graph: boolean;
-    features: { [key: number]: Feature };
-    commit_hash: string;
-    /** Available on LND since v0.15.0-beta */
-    require_htlc_interceptor?: boolean;
-  }
-
-  export interface Feature {
-    name: string;
-    is_required: boolean;
-    is_known: boolean;
-  }
-
-  export interface ForensicOutput {
-    node?: 1 | 2;
-    type: number;
-    value: number;
-  }
-}

backend/src/api/lightning/lnd/lnd-api.ts

@@ -1,41 +0,0 @@
-import axios, { AxiosRequestConfig } from 'axios';
-import { Agent } from 'https';
-import * as fs from 'fs';
-import { AbstractLightningApi } from '../lightning-api-abstract-factory';
-import { ILightningApi } from '../lightning-api.interface';
-import config from '../../../config';
-
-class LndApi implements AbstractLightningApi {
-  axiosConfig: AxiosRequestConfig = {};
-
-  constructor() {
-    if (config.LIGHTNING.ENABLED) {
-      this.axiosConfig = {
-        headers: {
-          'Grpc-Metadata-macaroon': fs.readFileSync(config.LND.MACAROON_PATH).toString('hex')
-        },
-        httpsAgent: new Agent({
-          ca: fs.readFileSync(config.LND.TLS_CERT_PATH)
-        }),
-        timeout: 10000
-      };
-    }
-  }
-
-  async $getNetworkInfo(): Promise<ILightningApi.NetworkInfo> {
-    return axios.get<ILightningApi.NetworkInfo>(config.LND.REST_API_URL + '/v1/graph/info', this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  async $getInfo(): Promise<ILightningApi.Info> {
-    return axios.get<ILightningApi.Info>(config.LND.REST_API_URL + '/v1/getinfo', this.axiosConfig)
-      .then((response) => response.data);
-  }
-
-  async $getNetworkGraph(): Promise<ILightningApi.NetworkGraph> {
-    return axios.get<ILightningApi.NetworkGraph>(config.LND.REST_API_URL + '/v1/graph', this.axiosConfig)
-      .then((response) => response.data);
-  }
-}
-
-export default LndApi;

backend/src/api/liquid/elements-parser.ts

@@ -1,103 +0,0 @@
-import { IBitcoinApi } from '../bitcoin/bitcoin-api.interface';
-import bitcoinClient from '../bitcoin/bitcoin-client';
-import bitcoinSecondClient from '../bitcoin/bitcoin-second-client';
-import { Common } from '../common';
-import DB from '../../database';
-import logger from '../../logger';
-
-class ElementsParser {
-  private isRunning = false;
-
-  constructor() { }
-
-  public async $parse() {
-    if (this.isRunning) {
-      return;
-    }
-    try {
-      this.isRunning = true;
-      const result = await bitcoinClient.getChainTips();
-      const tip = result[0].height;
-      const latestBlockHeight = await this.$getLatestBlockHeightFromDatabase();
-      for (let height = latestBlockHeight + 1; height <= tip; height++) {
-        const blockHash: IBitcoinApi.ChainTips = await bitcoinClient.getBlockHash(height);
-        const block: IBitcoinApi.Block = await bitcoinClient.getBlock(blockHash, 2);
-        await this.$parseBlock(block);
-        await this.$saveLatestBlockToDatabase(block.height);
-      }
-      this.isRunning = false;
-    } catch (e) {
-      this.isRunning = false;
-      throw new Error(e instanceof Error ? e.message : 'Error');
-    }
-  }
-
-  public async $getPegDataByMonth(): Promise<any> {
-    const query = `SELECT SUM(amount) AS amount, DATE_FORMAT(FROM_UNIXTIME(datetime), '%Y-%m-01') AS date FROM elements_pegs GROUP BY DATE_FORMAT(FROM_UNIXTIME(datetime), '%Y%m')`;
-    const [rows] = await DB.query(query);
-    return rows;
-  }
-
-  protected async $parseBlock(block: IBitcoinApi.Block) {
-    for (const tx of block.tx) {
-      await this.$parseInputs(tx, block);
-      await this.$parseOutputs(tx, block);
-    }
-  }
-
-  protected async $parseInputs(tx: IBitcoinApi.Transaction, block: IBitcoinApi.Block) {
-    for (const [index, input] of tx.vin.entries()) {
-      if (input.is_pegin) {
-        await this.$parsePegIn(input, index, tx.txid, block);
-      }
-    }
-  }
-
-  protected async $parsePegIn(input: IBitcoinApi.Vin, vindex: number, txid: string, block: IBitcoinApi.Block) {
-    const bitcoinTx: IBitcoinApi.Transaction = await bitcoinSecondClient.getRawTransaction(input.txid, true);
-    const prevout = bitcoinTx.vout[input.vout || 0];
-    const outputAddress = prevout.scriptPubKey.address || (prevout.scriptPubKey.addresses && prevout.scriptPubKey.addresses[0]) || '';
-    await this.$savePegToDatabase(block.height, block.time, prevout.value * 100000000, txid, vindex,
-      outputAddress, bitcoinTx.txid, prevout.n, 1);
-  }
-
-  protected async $parseOutputs(tx: IBitcoinApi.Transaction, block: IBitcoinApi.Block) {
-    for (const output of tx.vout) {
-      if (output.scriptPubKey.pegout_chain) {
-        await this.$savePegToDatabase(block.height, block.time, 0 - output.value * 100000000, tx.txid, output.n,
-          (output.scriptPubKey.pegout_addresses && output.scriptPubKey.pegout_addresses[0] || ''), '', 0, 0);
-      }
-      if (!output.scriptPubKey.pegout_chain && output.scriptPubKey.type === 'nulldata'
-        && output.value && output.value > 0 && output.asset && output.asset === Common.nativeAssetId) {
-        await this.$savePegToDatabase(block.height, block.time, 0 - output.value * 100000000, tx.txid, output.n,
-          (output.scriptPubKey.pegout_addresses && output.scriptPubKey.pegout_addresses[0] || ''), '', 0, 1);
-      }
-    }
-  }
-
-  protected async $savePegToDatabase(height: number, blockTime: number, amount: number, txid: string,
-    txindex: number, bitcoinaddress: string, bitcointxid: string, bitcoinindex: number, final_tx: number): Promise<void> {
-    const query = `INSERT INTO elements_pegs(
-        block, datetime, amount, txid, txindex, bitcoinaddress, bitcointxid, bitcoinindex, final_tx
-      ) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)`;
-
-    const params: (string | number)[] = [
-      height, blockTime, amount, txid, txindex, bitcoinaddress, bitcointxid, bitcoinindex, final_tx
-    ];
-    await DB.query(query, params);
-    logger.debug(`Saved L-BTC peg from block height #${height} with TXID ${txid}.`);
-  }
-
-  protected async $getLatestBlockHeightFromDatabase(): Promise<number> {
-    const query = `SELECT number FROM state WHERE name = 'last_elements_block'`;
-    const [rows] = await DB.query(query);
-    return rows[0]['number'];
-  }
-
-  protected async $saveLatestBlockToDatabase(blockHeight: number) {
-    const query = `UPDATE state SET number = ? WHERE name = 'last_elements_block'`;
-    await DB.query(query, [blockHeight]);
-  }
-}
-
-export default new ElementsParser();

backend/src/api/liquid/icons.ts

@@ -1,38 +0,0 @@
-import * as fs from 'fs';
-import logger from '../../logger';
-
-class Icons {
-  private static FILE_NAME = './icons.json';
-  private iconIds: string[] = [];
-  private icons: { [assetId: string]: string; } = {};
-
-  constructor() {}
-
-  public loadIcons() {
-    if (!fs.existsSync(Icons.FILE_NAME)) {
-      logger.warn(`${Icons.FILE_NAME} does not exist. No Liquid icons loaded.`);
-      return;
-    }
-    const cacheData = fs.readFileSync(Icons.FILE_NAME, 'utf8');
-    this.icons = JSON.parse(cacheData);
-
-    for (const i in this.icons) {
-      this.iconIds.push(i);
-    }
-    logger.debug(`Liquid icons has been loaded.`);
-  }
-
-  public getIconByAssetId(assetId: string): Buffer | undefined {
-    const icon = this.icons[assetId];
-    if (icon) {
-      return Buffer.from(icon, 'base64');
-    }
-  }
-
-  public getAllIconIds() {
-    return this.iconIds;
-  }
-
-}
-
-export default new Icons();

backend/src/api/liquid/liquid.routes.ts

@@ -1,73 +0,0 @@
-import axios from 'axios';
-import { Application, Request, Response } from 'express';
-import config from '../../config';
-import elementsParser from './elements-parser';
-import icons from './icons';
-
-class LiquidRoutes {
-  public initRoutes(app: Application) {
-    app
-      .get(config.MEMPOOL.API_URL_PREFIX + 'assets/icons', this.getAllLiquidIcon)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'assets/featured', this.$getAllFeaturedLiquidAssets)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'asset/:assetId/icon', this.getLiquidIcon)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'assets/group/:id', this.$getAssetGroup)
-      ;
-    
-    if (config.DATABASE.ENABLED) {
-      app
-        .get(config.MEMPOOL.API_URL_PREFIX + 'liquid/pegs/month', this.$getElementsPegsByMonth)
-        ;
-    }
-  }
-
-
-  private getLiquidIcon(req: Request, res: Response) {
-    const result = icons.getIconByAssetId(req.params.assetId);
-    if (result) {
-      res.setHeader('content-type', 'image/png');
-      res.setHeader('content-length', result.length);
-      res.send(result);
-    } else {
-      res.status(404).send('Asset icon not found');
-    }
-  }
-
-  private getAllLiquidIcon(req: Request, res: Response) {
-    const result = icons.getAllIconIds();
-    if (result) {
-      res.json(result);
-    } else {
-      res.status(404).send('Asset icons not found');
-    }
-  }
-
-  private async $getAllFeaturedLiquidAssets(req: Request, res: Response) {
-    try {
-      const response = await axios.get(`${config.EXTERNAL_DATA_SERVER.LIQUID_API}/assets/featured`, { responseType: 'stream', timeout: 10000 });
-      response.data.pipe(res);
-    } catch (e) {
-      res.status(500).end();
-    }
-  }
-
-  private async $getAssetGroup(req: Request, res: Response) {
-    try {
-      const response = await axios.get(`${config.EXTERNAL_DATA_SERVER.LIQUID_API}/assets/group/${parseInt(req.params.id, 10)}`,
-        { responseType: 'stream', timeout: 10000 });
-      response.data.pipe(res);
-    } catch (e) {
-      res.status(500).end();
-    }
-  }
-
-  private async $getElementsPegsByMonth(req: Request, res: Response) {
-    try {
-      const pegs = await elementsParser.$getPegDataByMonth();
-      res.json(pegs);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-}
-
-export default new LiquidRoutes();

backend/src/api/loading-indicators.ts

@@ -1,32 +0,0 @@
-import { ILoadingIndicators } from '../mempool.interfaces';
-
-class LoadingIndicators {
-  private loadingIndicators: ILoadingIndicators = {
-    'mempool': 0,
-  };
-  private progressChangedCallback: ((loadingIndicators: ILoadingIndicators) => void) | undefined;
-
-  constructor() { }
-
-  public setProgressChangedCallback(fn: (loadingIndicators: ILoadingIndicators) => void) {
-    this.progressChangedCallback = fn;
-  }
-
-  public setProgress(name: string, progressPercent: number, rounded: boolean = true) {
-    const newProgress = rounded === true ? Math.round(progressPercent) : progressPercent;
-    if (newProgress >= 100) {
-      delete this.loadingIndicators[name];
-    } else {
-      this.loadingIndicators[name] = newProgress;
-    }
-    if (this.progressChangedCallback) {
-      this.progressChangedCallback(this.loadingIndicators);
-    }
-  }
-
-  public getLoadingIndicators() {
-    return this.loadingIndicators;
-  }
-}
-
-export default new LoadingIndicators();

backend/src/api/memory-cache.ts

@@ -1,38 +0,0 @@
-interface ICache {
-  type: string;
-  id: string;
-  expires: Date;
-  data: any;
-}
-
-class MemoryCache {
-  private cache: ICache[] = [];
-  constructor() {
-    setInterval(this.cleanup.bind(this), 1000);
-  }
-
-  public set(type: string, id: string, data: any, secondsExpiry: number) {
-    const expiry = new Date();
-    expiry.setSeconds(expiry.getSeconds() + secondsExpiry);
-    this.cache.push({
-      type: type,
-      id: id,
-      data: data,
-      expires: expiry,
-    });
-  }
-
-  public get<T>(type: string, id: string): T | null {
-    const found = this.cache.find((cache) => cache.type === type && cache.id === id);
-    if (found) {
-      return found.data;
-    }
-    return null;
-  }
-
-  private cleanup() {
-    this.cache = this.cache.filter((cache) => cache.expires < (new Date()));
-  }
-}
-
-export default new MemoryCache();

backend/src/api/mempool-blocks.ts

@@ -1,329 +0,0 @@
-import logger from '../logger';
-import { MempoolBlock, TransactionExtended, ThreadTransaction, TransactionStripped, MempoolBlockWithTransactions, MempoolBlockDelta, Ancestor } from '../mempool.interfaces';
-import { Common } from './common';
-import config from '../config';
-import { Worker } from 'worker_threads';
-import path from 'path';
-
-class MempoolBlocks {
-  private mempoolBlocks: MempoolBlockWithTransactions[] = [];
-  private mempoolBlockDeltas: MempoolBlockDelta[] = [];
-  private txSelectionWorker: Worker | null = null;
-
-  constructor() {}
-
-  public getMempoolBlocks(): MempoolBlock[] {
-    return this.mempoolBlocks.map((block) => {
-      return {
-        blockSize: block.blockSize,
-        blockVSize: block.blockVSize,
-        nTx: block.nTx,
-        totalFees: block.totalFees,
-        medianFee: block.medianFee,
-        feeRange: block.feeRange,
-      };
-    });
-  }
-
-  public getMempoolBlocksWithTransactions(): MempoolBlockWithTransactions[] {
-    return this.mempoolBlocks;
-  }
-
-  public getMempoolBlockDeltas(): MempoolBlockDelta[] {
-    return this.mempoolBlockDeltas;
-  }
-
-  public updateMempoolBlocks(memPool: { [txid: string]: TransactionExtended }, saveResults: boolean = false): MempoolBlockWithTransactions[] {
-    const latestMempool = memPool;
-    const memPoolArray: TransactionExtended[] = [];
-    for (const i in latestMempool) {
-      if (latestMempool.hasOwnProperty(i)) {
-        memPoolArray.push(latestMempool[i]);
-      }
-    }
-    const start = new Date().getTime();
-
-    // Clear bestDescendants & ancestors
-    memPoolArray.forEach((tx) => {
-      tx.bestDescendant = null;
-      tx.ancestors = [];
-      tx.cpfpChecked = false;
-      if (!tx.effectiveFeePerVsize) {
-        tx.effectiveFeePerVsize = tx.feePerVsize;
-      }
-    });
-
-    // First sort
-    memPoolArray.sort((a, b) => b.feePerVsize - a.feePerVsize);
-
-    // Loop through and traverse all ancestors and sum up all the sizes + fees
-    // Pass down size + fee to all unconfirmed children
-    let sizes = 0;
-    memPoolArray.forEach((tx, i) => {
-      sizes += tx.weight;
-      if (sizes > 4000000 * 8) {
-        return;
-      }
-      Common.setRelativesAndGetCpfpInfo(tx, memPool);
-    });
-
-    // Final sort, by effective fee
-    memPoolArray.sort((a, b) => b.effectiveFeePerVsize - a.effectiveFeePerVsize);
-
-    const end = new Date().getTime();
-    const time = end - start;
-    logger.debug('Mempool blocks calculated in ' + time / 1000 + ' seconds');
-
-    const blocks = this.calculateMempoolBlocks(memPoolArray, this.mempoolBlocks);
-
-    if (saveResults) {
-      const deltas = this.calculateMempoolDeltas(this.mempoolBlocks, blocks);
-      this.mempoolBlocks = blocks;
-      this.mempoolBlockDeltas = deltas;
-    }
-
-    return blocks;
-  }
-
-  private calculateMempoolBlocks(transactionsSorted: TransactionExtended[], prevBlocks: MempoolBlockWithTransactions[]): MempoolBlockWithTransactions[] {
-    const mempoolBlocks: MempoolBlockWithTransactions[] = [];
-    let blockWeight = 0;
-    let blockSize = 0;
-    let transactions: TransactionExtended[] = [];
-    transactionsSorted.forEach((tx) => {
-      if (blockWeight + tx.weight <= config.MEMPOOL.BLOCK_WEIGHT_UNITS
-        || mempoolBlocks.length === config.MEMPOOL.MEMPOOL_BLOCKS_AMOUNT - 1) {
-        blockWeight += tx.weight;
-        blockSize += tx.size;
-        transactions.push(tx);
-      } else {
-        mempoolBlocks.push(this.dataToMempoolBlocks(transactions, mempoolBlocks.length));
-        blockWeight = tx.weight;
-        blockSize = tx.size;
-        transactions = [tx];
-      }
-    });
-    if (transactions.length) {
-      mempoolBlocks.push(this.dataToMempoolBlocks(transactions, mempoolBlocks.length));
-    }
-
-    return mempoolBlocks;
-  }
-
-  private calculateMempoolDeltas(prevBlocks: MempoolBlockWithTransactions[], mempoolBlocks: MempoolBlockWithTransactions[]): MempoolBlockDelta[] {
-    const mempoolBlockDeltas: MempoolBlockDelta[] = [];
-    for (let i = 0; i < Math.max(mempoolBlocks.length, prevBlocks.length); i++) {
-      let added: TransactionStripped[] = [];
-      let removed: string[] = [];
-      if (mempoolBlocks[i] && !prevBlocks[i]) {
-        added = mempoolBlocks[i].transactions;
-      } else if (!mempoolBlocks[i] && prevBlocks[i]) {
-        removed = prevBlocks[i].transactions.map(tx => tx.txid);
-      } else if (mempoolBlocks[i] && prevBlocks[i]) {
-        const prevIds = {};
-        const newIds = {};
-        prevBlocks[i].transactions.forEach(tx => {
-          prevIds[tx.txid] = true;
-        });
-        mempoolBlocks[i].transactions.forEach(tx => {
-          newIds[tx.txid] = true;
-        });
-        prevBlocks[i].transactions.forEach(tx => {
-          if (!newIds[tx.txid]) {
-            removed.push(tx.txid);
-          }
-        });
-        mempoolBlocks[i].transactions.forEach(tx => {
-          if (!prevIds[tx.txid]) {
-            added.push(tx);
-          }
-        });
-      }
-      mempoolBlockDeltas.push({
-        added,
-        removed
-      });
-    }
-    return mempoolBlockDeltas;
-  }
-
-  public async makeBlockTemplates(newMempool: { [txid: string]: TransactionExtended }, saveResults: boolean = false): Promise<MempoolBlockWithTransactions[]> {
-    // prepare a stripped down version of the mempool with only the minimum necessary data
-    // to reduce the overhead of passing this data to the worker thread
-    const strippedMempool: { [txid: string]: ThreadTransaction } = {};
-    Object.values(newMempool).forEach(entry => {
-      strippedMempool[entry.txid] = {
-        txid: entry.txid,
-        fee: entry.fee,
-        weight: entry.weight,
-        feePerVsize: entry.fee / (entry.weight / 4),
-        effectiveFeePerVsize: entry.fee / (entry.weight / 4),
-        vin: entry.vin.map(v => v.txid),
-      };
-    });
-
-    // (re)initialize tx selection worker thread
-    if (!this.txSelectionWorker) {
-      this.txSelectionWorker = new Worker(path.resolve(__dirname, './tx-selection-worker.js'));
-      // if the thread throws an unexpected error, or exits for any other reason,
-      // reset worker state so that it will be re-initialized on the next run
-      this.txSelectionWorker.once('error', () => {
-        this.txSelectionWorker = null;
-      });
-      this.txSelectionWorker.once('exit', () => {
-        this.txSelectionWorker = null;
-      });
-    }
-
-    // run the block construction algorithm in a separate thread, and wait for a result
-    let threadErrorListener;
-    try {
-      const workerResultPromise = new Promise<{ blocks: ThreadTransaction[][], clusters: { [root: string]: string[] } }>((resolve, reject) => {
-        threadErrorListener = reject;
-        this.txSelectionWorker?.once('message', (result): void => {
-          resolve(result);
-        });
-        this.txSelectionWorker?.once('error', reject);
-      });
-      this.txSelectionWorker.postMessage({ type: 'set', mempool: strippedMempool });
-      const { blocks, clusters } = await workerResultPromise;
-
-      // clean up thread error listener
-      this.txSelectionWorker?.removeListener('error', threadErrorListener);
-
-      return this.processBlockTemplates(newMempool, blocks, clusters, saveResults);
-    } catch (e) {
-      logger.err('makeBlockTemplates failed. ' + (e instanceof Error ? e.message : e));
-    }
-    return this.mempoolBlocks;
-  }
-
-  public async updateBlockTemplates(newMempool: { [txid: string]: TransactionExtended }, added: TransactionExtended[], removed: string[], saveResults: boolean = false): Promise<void> {
-    if (!this.txSelectionWorker) {
-      // need to reset the worker
-      this.makeBlockTemplates(newMempool, saveResults);
-      return;
-    }
-    // prepare a stripped down version of the mempool with only the minimum necessary data
-    // to reduce the overhead of passing this data to the worker thread
-    const addedStripped: ThreadTransaction[] = added.map(entry => {
-      return {
-        txid: entry.txid,
-        fee: entry.fee,
-        weight: entry.weight,
-        feePerVsize: entry.fee / (entry.weight / 4),
-        effectiveFeePerVsize: entry.fee / (entry.weight / 4),
-        vin: entry.vin.map(v => v.txid),
-      };
-    });
-
-    // run the block construction algorithm in a separate thread, and wait for a result
-    let threadErrorListener;
-    try {
-      const workerResultPromise = new Promise<{ blocks: ThreadTransaction[][], clusters: { [root: string]: string[] } }>((resolve, reject) => {
-        threadErrorListener = reject;
-        this.txSelectionWorker?.once('message', (result): void => {
-          resolve(result);
-        });
-        this.txSelectionWorker?.once('error', reject);
-      });
-      this.txSelectionWorker.postMessage({ type: 'update', added: addedStripped, removed });
-      const { blocks, clusters } = await workerResultPromise;
-
-      // clean up thread error listener
-      this.txSelectionWorker?.removeListener('error', threadErrorListener);
-
-      this.processBlockTemplates(newMempool, blocks, clusters, saveResults);
-    } catch (e) {
-      logger.err('updateBlockTemplates failed. ' + (e instanceof Error ? e.message : e));
-    }
-  }
-
-  private processBlockTemplates(mempool, blocks, clusters, saveResults): MempoolBlockWithTransactions[] {
-    // update this thread's mempool with the results
-    blocks.forEach(block => {
-      block.forEach(tx => {
-        if (tx.txid in mempool) {
-          if (tx.effectiveFeePerVsize != null) {
-            mempool[tx.txid].effectiveFeePerVsize = tx.effectiveFeePerVsize;
-          }
-          if (tx.cpfpRoot && tx.cpfpRoot in clusters) {
-            const ancestors: Ancestor[] = [];
-            const descendants: Ancestor[] = [];
-            const cluster = clusters[tx.cpfpRoot];
-            let matched = false;
-            cluster.forEach(txid => {
-              if (txid === tx.txid) {
-                matched = true;
-              } else {
-                const relative = {
-                  txid: txid,
-                  fee: mempool[txid].fee,
-                  weight: mempool[txid].weight,
-                };
-                if (matched) {
-                  descendants.push(relative);
-                } else {
-                  ancestors.push(relative);
-                }
-              }
-            });
-            mempool[tx.txid].ancestors = ancestors;
-            mempool[tx.txid].descendants = descendants;
-            mempool[tx.txid].bestDescendant = null;
-          }
-          mempool[tx.txid].cpfpChecked = tx.cpfpChecked;
-        }
-      });
-    });
-
-    // unpack the condensed blocks into proper mempool blocks
-    const mempoolBlocks = blocks.map((transactions, blockIndex) => {
-      return this.dataToMempoolBlocks(transactions.map(tx => {
-        return mempool[tx.txid] || null;
-      }).filter(tx => !!tx), blockIndex);
-    });
-
-    if (saveResults) {
-      const deltas = this.calculateMempoolDeltas(this.mempoolBlocks, mempoolBlocks);
-      this.mempoolBlocks = mempoolBlocks;
-      this.mempoolBlockDeltas = deltas;
-    }
-
-    return mempoolBlocks;
-  }
-
-  private dataToMempoolBlocks(transactions: TransactionExtended[], blocksIndex: number): MempoolBlockWithTransactions {
-    let totalSize = 0;
-    let totalWeight = 0;
-    const fitTransactions: TransactionExtended[] = [];
-    transactions.forEach(tx => {
-      totalSize += tx.size;
-      totalWeight += tx.weight;
-      if ((totalWeight + tx.weight) <= config.MEMPOOL.BLOCK_WEIGHT_UNITS * 1.2) {
-        fitTransactions.push(tx);
-      }
-    });
-    let rangeLength = 4;
-    if (blocksIndex === 0) {
-      rangeLength = 8;
-    }
-    if (transactions.length > 4000) {
-      rangeLength = 6;
-    } else if (transactions.length > 10000) {
-      rangeLength = 8;
-    }
-    return {
-      blockSize: totalSize,
-      blockVSize: totalWeight / 4,
-      nTx: transactions.length,
-      totalFees: transactions.reduce((acc, cur) => acc + cur.fee, 0),
-      medianFee: Common.percentile(transactions.map((tx) => tx.effectiveFeePerVsize), config.MEMPOOL.RECOMMENDED_FEE_PERCENTILE),
-      feeRange: Common.getFeesInRange(transactions, rangeLength),
-      transactionIds: transactions.map((tx) => tx.txid),
-      transactions: fitTransactions.map((tx) => Common.stripTransaction(tx)),
-    };
-  }
-}
-
-export default new MempoolBlocks();

backend/src/api/mempool.ts

@@ -1,99 +1,35 @@
-import config from '../config';
+const config = require('../../mempool-config.json');
 import bitcoinApi from './bitcoin/bitcoin-api-factory';
-import { TransactionExtended, VbytesPerSecond } from '../mempool.interfaces';
-import logger from '../logger';
-import { Common } from './common';
-import transactionUtils from './transaction-utils';
-import { IBitcoinApi } from './bitcoin/bitcoin-api.interface';
-import loadingIndicators from './loading-indicators';
-import bitcoinClient from './bitcoin/bitcoin-client';
-import bitcoinSecondClient from './bitcoin/bitcoin-second-client';
-import rbfCache from './rbf-cache';
+import { ITransaction, IMempoolInfo, IMempool } from '../interfaces';
 
 class Mempool {
-  private static WEBSOCKET_REFRESH_RATE_MS = 10000;
-  private static LAZY_DELETE_AFTER_SECONDS = 30;
-  private inSync: boolean = false;
-  private mempoolCacheDelta: number = -1;
-  private mempoolCache: { [txId: string]: TransactionExtended } = {};
-  private mempoolInfo: IBitcoinApi.MempoolInfo = { loaded: false, size: 0, bytes: 0, usage: 0, total_fee: 0,
-                                                    maxmempool: 300000000, mempoolminfee: 0.00001000, minrelaytxfee: 0.00001000 };
-  private mempoolChangedCallback: ((newMempool: {[txId: string]: TransactionExtended; }, newTransactions: TransactionExtended[],
-    deletedTransactions: TransactionExtended[]) => void) | undefined;
-  private asyncMempoolChangedCallback: ((newMempool: {[txId: string]: TransactionExtended; }, newTransactions: TransactionExtended[],
-    deletedTransactions: TransactionExtended[]) => Promise<void>) | undefined;
+  private mempool: IMempool = {};
+  private mempoolInfo: IMempoolInfo | undefined;
+  private mempoolChangedCallback: Function | undefined;
 
   private txPerSecondArray: number[] = [];
   private txPerSecond: number = 0;
 
-  private vBytesPerSecondArray: VbytesPerSecond[] = [];
+  private vBytesPerSecondArray: any[] = [];
   private vBytesPerSecond: number = 0;
-  private mempoolProtection = 0;
-  private latestTransactions: any[] = [];
-
-  private ESPLORA_MISSING_TX_WARNING_THRESHOLD = 100; 
-  private SAMPLE_TIME = 10000; // In ms
-  private timer = new Date().getTime();
-  private missingTxCount = 0;
 
   constructor() {
     setInterval(this.updateTxPerSecond.bind(this), 1000);
-    setInterval(this.deleteExpiredTransactions.bind(this), 20000);
   }
 
-  /**
-   * Return true if we should leave resources available for mempool tx caching
-   */
-  public hasPriority(): boolean {
-    if (this.inSync) {
-      return false;
-    } else {
-      return this.mempoolCacheDelta == -1 || this.mempoolCacheDelta > 25;
-    }
-  }
-
-  public isInSync(): boolean {
-    return this.inSync;
-  }
-
-  public setOutOfSync(): void {
-    this.inSync = false;
-    loadingIndicators.setProgress('mempool', 99);
-  }
-
-  public getLatestTransactions() {
-    return this.latestTransactions;
-  }
-
-  public setMempoolChangedCallback(fn: (newMempool: { [txId: string]: TransactionExtended; },
-    newTransactions: TransactionExtended[], deletedTransactions: TransactionExtended[]) => void) {
+  public setMempoolChangedCallback(fn: Function) {
     this.mempoolChangedCallback = fn;
   }
 
-  public setAsyncMempoolChangedCallback(fn: (newMempool: { [txId: string]: TransactionExtended; },
-    newTransactions: TransactionExtended[], deletedTransactions: TransactionExtended[]) => Promise<void>) {
-    this.asyncMempoolChangedCallback = fn;
+  public getMempool(): { [txid: string]: ITransaction } {
+    return this.mempool;
   }
 
-  public getMempool(): { [txid: string]: TransactionExtended } {
-    return this.mempoolCache;
+  public setMempool(mempoolData: any) {
+    this.mempool = mempoolData;
   }
 
-  public setMempool(mempoolData: { [txId: string]: TransactionExtended }) {
-    this.mempoolCache = mempoolData;
-    if (this.mempoolChangedCallback) {
-      this.mempoolChangedCallback(this.mempoolCache, [], []);
-    }
-    if (this.asyncMempoolChangedCallback) {
-      this.asyncMempoolChangedCallback(this.mempoolCache, [], []);
-    }
-  }
-
-  public async $updateMemPoolInfo() {
-    this.mempoolInfo = await this.$getMempoolInfo();
-  }
-
-  public getMempoolInfo(): IBitcoinApi.MempoolInfo {
+  public getMempoolInfo(): IMempoolInfo | undefined {
     return this.mempoolInfo;
   }
 
@@ -105,182 +41,128 @@ class Mempool {
     return this.vBytesPerSecond;
   }
 
-  public getFirstSeenForTransactions(txIds: string[]): number[] {
-    const txTimes: number[] = [];
-    txIds.forEach((txId: string) => {
-      const tx = this.mempoolCache[txId];
-      if (tx && tx.firstSeen) {
-        txTimes.push(tx.firstSeen);
-      } else {
-        txTimes.push(0);
-      }
-    });
-    return txTimes;
+  public async updateMemPoolInfo() {
+    try {
+      this.mempoolInfo = await bitcoinApi.getMempoolInfo();
+    } catch (err) {
+      console.log('Error getMempoolInfo', err);
+    }
   }
 
-  public async $updateMempool(): Promise<void> {
-    logger.debug(`Updating mempool...`);
+  public async getRawTransaction(txId: string, isCoinbase = false): Promise<ITransaction | false> {
+    try {
+      const transaction = await bitcoinApi.getRawTransaction(txId);
+
+      let totalOut = 0;
+      transaction.vout.forEach((output) => totalOut += output.value);
+
+      if (config.BACKEND_API === 'electrs') {
+        transaction.feePerWeightUnit = (transaction.fee * 100000000) / transaction.weight || 0;
+        transaction.feePerVsize = (transaction.fee * 100000000) / (transaction.vsize) || 0;
+        transaction.totalOut = totalOut / 100000000;
+      } else {
+        let totalIn = 0;
+        if (!isCoinbase) {
+          for (let i = 0; i < transaction.vin.length; i++) {
+            try {
+              const result = await bitcoinApi.getRawTransaction(transaction.vin[i].txid);
+              transaction.vin[i]['value'] = result.vout[transaction.vin[i].vout].value;
+              totalIn += result.vout[transaction.vin[i].vout].value;
+            } catch (err) {
+              console.log('Locating historical tx error');
+            }
+          }
+        }
+
+        if (totalIn > totalOut) {
+          transaction.fee = parseFloat((totalIn - totalOut).toFixed(8));
+          transaction.feePerWeightUnit = (transaction.fee * 100000000) / (transaction.vsize * 4) || 0;
+          transaction.feePerVsize = (transaction.fee * 100000000) / (transaction.vsize) || 0;
+        } else if (!isCoinbase) {
+          transaction.fee = 0;
+          transaction.feePerVsize = 0;
+          transaction.feePerWeightUnit = 0;
+          console.log('Minus fee error!');
+        }
+        transaction.totalOut = totalOut;
+      }
+      return transaction;
+    } catch (e) {
+      console.log(txId + ' not found');
+      return false;
+    }
+  }
+
+  public async updateMempool() {
+    console.log('Updating mempool');
     const start = new Date().getTime();
     let hasChange: boolean = false;
-    const currentMempoolSize = Object.keys(this.mempoolCache).length;
-    const transactions = await bitcoinApi.$getRawMempool();
-    const diff = transactions.length - currentMempoolSize;
-    const newTransactions: TransactionExtended[] = [];
-
-    this.mempoolCacheDelta = Math.abs(diff);
-
-    if (!this.inSync) {
-      loadingIndicators.setProgress('mempool', Object.keys(this.mempoolCache).length / transactions.length * 100);
-    }
-
-    // https://github.com/mempool/mempool/issues/3283
-    const logEsplora404 = (missingTxCount, threshold, time) => {
-      const log = `In the past ${time / 1000} seconds, esplora tx API replied ${missingTxCount} times with a 404 error code while updating nodejs backend mempool`;
-      if (missingTxCount >= threshold) {
-        logger.warn(log);
-      } else if (missingTxCount > 0) {
-        logger.debug(log);
-      }
-    };
-
-    for (const txid of transactions) {
-      if (!this.mempoolCache[txid]) {
-        try {
-          const transaction = await transactionUtils.$getTransactionExtended(txid);
-          this.mempoolCache[txid] = transaction;
-          if (this.inSync) {
+    let txCount = 0;
+    try {
+      const transactions = await bitcoinApi.getRawMempool();
+      const diff = transactions.length - Object.keys(this.mempool).length;
+      for (const tx of transactions) {
+        if (!this.mempool[tx]) {
+          const transaction = await this.getRawTransaction(tx);
+          if (transaction) {
+            this.mempool[tx] = transaction;
+            txCount++;
             this.txPerSecondArray.push(new Date().getTime());
             this.vBytesPerSecondArray.push({
               unixTime: new Date().getTime(),
               vSize: transaction.vsize,
             });
+            hasChange = true;
+            if (diff > 0) {
+              console.log('Calculated fee for transaction ' + txCount + ' / ' + diff);
+            } else {
+              console.log('Calculated fee for transaction ' + txCount);
+            }
+          } else {
+            console.log('Error finding transaction in mempool.');
           }
+        }
+
+        if ((new Date().getTime()) - start > config.MEMPOOL_REFRESH_RATE_MS * 10) {
+          break;
+        }
+      }
+
+      const newMempool: IMempool = {};
+      transactions.forEach((tx) => {
+        if (this.mempool[tx]) {
+          newMempool[tx] = this.mempool[tx];
+        } else {
           hasChange = true;
-          newTransactions.push(transaction);
-        } catch (e: any) {
-          if (config.MEMPOOL.BACKEND === 'esplora' && e.response?.status === 404) {
-            this.missingTxCount++;
-          }
-          logger.debug(`Error finding transaction '${txid}' in the mempool: ` + (e instanceof Error ? e.message : e));
         }
+      });
+
+      this.mempool = newMempool;
+
+      if (hasChange && this.mempoolChangedCallback) {
+        this.mempoolChangedCallback(this.mempool);
       }
 
-      if ((new Date().getTime()) - start > Mempool.WEBSOCKET_REFRESH_RATE_MS) {
-        break;
-      }
-    }
-
-    // Reset esplora 404 counter and log a warning if needed
-    const elapsedTime = new Date().getTime() - this.timer;
-    if (elapsedTime > this.SAMPLE_TIME) {
-      logEsplora404(this.missingTxCount, this.ESPLORA_MISSING_TX_WARNING_THRESHOLD, elapsedTime);
-      this.timer = new Date().getTime();
-      this.missingTxCount = 0;
-    }
-
-    // Prevent mempool from clear on bitcoind restart by delaying the deletion
-    if (this.mempoolProtection === 0
-      && currentMempoolSize > 20000
-      && transactions.length / currentMempoolSize <= 0.80
-    ) {
-      this.mempoolProtection = 1;
-      this.inSync = false;
-      logger.warn(`Mempool clear protection triggered because transactions.length: ${transactions.length} and currentMempoolSize: ${currentMempoolSize}.`);
-      setTimeout(() => {
-        this.mempoolProtection = 2;
-        logger.warn('Mempool clear protection resumed.');
-      }, 1000 * 60 * config.MEMPOOL.CLEAR_PROTECTION_MINUTES);
-    }
-
-    const deletedTransactions: TransactionExtended[] = [];
-
-    if (this.mempoolProtection !== 1) {
-      this.mempoolProtection = 0;
-      // Index object for faster search
-      const transactionsObject = {};
-      transactions.forEach((txId) => transactionsObject[txId] = true);
-
-      // Flag transactions for lazy deletion
-      for (const tx in this.mempoolCache) {
-        if (!transactionsObject[tx] && !this.mempoolCache[tx].deleteAfter) {
-          deletedTransactions.push(this.mempoolCache[tx]);
-          this.mempoolCache[tx].deleteAfter = new Date().getTime() + Mempool.LAZY_DELETE_AFTER_SECONDS * 1000;
-        }
-      }
-    }
-
-    const newTransactionsStripped = newTransactions.map((tx) => Common.stripTransaction(tx));
-    this.latestTransactions = newTransactionsStripped.concat(this.latestTransactions).slice(0, 6);
-
-    if (!this.inSync && transactions.length === Object.keys(this.mempoolCache).length) {
-      this.inSync = true;
-      logger.notice('The mempool is now in sync!');
-      loadingIndicators.setProgress('mempool', 100);
-    }
-
-    this.mempoolCacheDelta = Math.abs(transactions.length - Object.keys(this.mempoolCache).length);
-
-    if (this.mempoolChangedCallback && (hasChange || deletedTransactions.length)) {
-      this.mempoolChangedCallback(this.mempoolCache, newTransactions, deletedTransactions);
-    }
-    if (this.asyncMempoolChangedCallback && (hasChange || deletedTransactions.length)) {
-      await this.asyncMempoolChangedCallback(this.mempoolCache, newTransactions, deletedTransactions);
-    }
-
-    const end = new Date().getTime();
-    const time = end - start;
-    logger.debug(`Mempool updated in ${time / 1000} seconds. New size: ${Object.keys(this.mempoolCache).length} (${diff > 0 ? '+' + diff : diff})`);
-  }
-
-  public handleRbfTransactions(rbfTransactions: { [txid: string]: TransactionExtended; }) {
-    for (const rbfTransaction in rbfTransactions) {
-      if (this.mempoolCache[rbfTransaction]) {
-        // Store replaced transactions
-        rbfCache.add(this.mempoolCache[rbfTransaction], rbfTransactions[rbfTransaction].txid);
-        // Erase the replaced transactions from the local mempool
-        delete this.mempoolCache[rbfTransaction];
-      }
+      const end = new Date().getTime();
+      const time = end - start;
+      console.log('Mempool updated in ' + time / 1000 + ' seconds');
+    } catch (err) {
+      console.log('getRawMempool error.', err);
     }
   }
 
   private updateTxPerSecond() {
-    const nowMinusTimeSpan = new Date().getTime() - (1000 * config.STATISTICS.TX_PER_SECOND_SAMPLE_PERIOD);
+    const nowMinusTimeSpan = new Date().getTime() - (1000 * config.TX_PER_SECOND_SPAN_SECONDS);
     this.txPerSecondArray = this.txPerSecondArray.filter((unixTime) => unixTime > nowMinusTimeSpan);
-    this.txPerSecond = this.txPerSecondArray.length / config.STATISTICS.TX_PER_SECOND_SAMPLE_PERIOD || 0;
+    this.txPerSecond = this.txPerSecondArray.length / config.TX_PER_SECOND_SPAN_SECONDS || 0;
 
     this.vBytesPerSecondArray = this.vBytesPerSecondArray.filter((data) => data.unixTime > nowMinusTimeSpan);
     if (this.vBytesPerSecondArray.length) {
       this.vBytesPerSecond = Math.round(
-        this.vBytesPerSecondArray.map((data) => data.vSize).reduce((a, b) => a + b) / config.STATISTICS.TX_PER_SECOND_SAMPLE_PERIOD
+        this.vBytesPerSecondArray.map((data) => data.vSize).reduce((a, b) => a + b) / config.TX_PER_SECOND_SPAN_SECONDS
       );
     }
   }
-
-  private deleteExpiredTransactions() {
-    const now = new Date().getTime();
-    for (const tx in this.mempoolCache) {
-      const lazyDeleteAt = this.mempoolCache[tx].deleteAfter;
-      if (lazyDeleteAt && lazyDeleteAt < now) {
-        delete this.mempoolCache[tx];
-        rbfCache.evict(tx);
-      }
-    }
-  }
-
-  private $getMempoolInfo() {
-    if (config.MEMPOOL.USE_SECOND_NODE_FOR_MINFEE) {
-      return Promise.all([
-        bitcoinClient.getMempoolInfo(),
-        bitcoinSecondClient.getMempoolInfo()
-      ]).then(([mempoolInfo, secondMempoolInfo]) => {
-        mempoolInfo.maxmempool = secondMempoolInfo.maxmempool;
-        mempoolInfo.mempoolminfee = secondMempoolInfo.mempoolminfee;
-        mempoolInfo.minrelaytxfee = secondMempoolInfo.minrelaytxfee;
-        return mempoolInfo;
-      });
-    }
-    return bitcoinClient.getMempoolInfo();
-  }
 }
 
 export default new Mempool();

backend/src/api/mining/mining-routes.ts

@@ -1,329 +0,0 @@
-import { Application, Request, Response } from 'express';
-import config from "../../config";
-import logger from '../../logger';
-import BlocksAuditsRepository from '../../repositories/BlocksAuditsRepository';
-import BlocksRepository from '../../repositories/BlocksRepository';
-import DifficultyAdjustmentsRepository from '../../repositories/DifficultyAdjustmentsRepository';
-import HashratesRepository from '../../repositories/HashratesRepository';
-import bitcoinClient from '../bitcoin/bitcoin-client';
-import mining from "./mining";
-import PricesRepository from '../../repositories/PricesRepository';
-
-class MiningRoutes {
-  public initRoutes(app: Application) {
-    app
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/pools/:interval', this.$getPools)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/pool/:slug/hashrate', this.$getPoolHistoricalHashrate)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/pool/:slug/blocks', this.$getPoolBlocks)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/pool/:slug/blocks/:height', this.$getPoolBlocks)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/pool/:slug', this.$getPool)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/hashrate/pools/:interval', this.$getPoolsHistoricalHashrate)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/hashrate/:interval', this.$getHistoricalHashrate)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/difficulty-adjustments', this.$getDifficultyAdjustments)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/reward-stats/:blockCount', this.$getRewardStats)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/blocks/fees/:interval', this.$getHistoricalBlockFees)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/blocks/rewards/:interval', this.$getHistoricalBlockRewards)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/blocks/fee-rates/:interval', this.$getHistoricalBlockFeeRates)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/blocks/sizes-weights/:interval', this.$getHistoricalBlockSizeAndWeight)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/difficulty-adjustments/:interval', this.$getDifficultyAdjustments)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/blocks/predictions/:interval', this.$getHistoricalBlockPrediction)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/blocks/audit/scores', this.$getBlockAuditScores)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/blocks/audit/scores/:height', this.$getBlockAuditScores)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/blocks/audit/score/:hash', this.$getBlockAuditScore)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/blocks/audit/:hash', this.$getBlockAudit)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'mining/blocks/timestamp/:timestamp', this.$getHeightFromTimestamp)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'historical-price', this.$getHistoricalPrice)
-    ;
-  }
-
-  private async $getHistoricalPrice(req: Request, res: Response): Promise<void> {
-    try {
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 300).toUTCString());
-      if (req.query.timestamp) {
-        res.status(200).send(await PricesRepository.$getNearestHistoricalPrice(
-          parseInt(<string>req.query.timestamp ?? 0, 10)
-        ));
-      } else {
-        res.status(200).send(await PricesRepository.$getHistoricalPrices());
-      }
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getPool(req: Request, res: Response): Promise<void> {
-    try {
-      const stats = await mining.$getPoolStat(req.params.slug);
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(stats);
-    } catch (e) {
-      if (e instanceof Error && e.message.indexOf('This mining pool does not exist') > -1) {
-        res.status(404).send(e.message);
-      } else {
-        res.status(500).send(e instanceof Error ? e.message : e);
-      }
-    }
-  }
-
-  private async $getPoolBlocks(req: Request, res: Response) {
-    try {
-      const poolBlocks = await BlocksRepository.$getBlocksByPool(
-        req.params.slug,
-        req.params.height === undefined ? undefined : parseInt(req.params.height, 10),
-      );
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(poolBlocks);
-    } catch (e) {
-      if (e instanceof Error && e.message.indexOf('This mining pool does not exist') > -1) {
-        res.status(404).send(e.message);
-      } else {
-        res.status(500).send(e instanceof Error ? e.message : e);
-      }
-    }
-  }
-
-  private async $getPools(req: Request, res: Response) {
-    try {
-      const stats = await mining.$getPoolsStats(req.params.interval);
-      const blockCount = await BlocksRepository.$blockCount(null, null);
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.header('X-total-count', blockCount.toString());
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(stats);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getPoolsHistoricalHashrate(req: Request, res: Response) {
-    try {
-      const hashrates = await HashratesRepository.$getPoolsWeeklyHashrate(req.params.interval);
-      const blockCount = await BlocksRepository.$blockCount(null, null);
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.header('X-total-count', blockCount.toString());
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 300).toUTCString());
-      res.json(hashrates);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getPoolHistoricalHashrate(req: Request, res: Response) {
-    try {
-      const hashrates = await HashratesRepository.$getPoolWeeklyHashrate(req.params.slug);
-      const blockCount = await BlocksRepository.$blockCount(null, null);
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.header('X-total-count', blockCount.toString());
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 300).toUTCString());
-      res.json(hashrates);
-    } catch (e) {
-      if (e instanceof Error && e.message.indexOf('This mining pool does not exist') > -1) {
-        res.status(404).send(e.message);
-      } else {
-        res.status(500).send(e instanceof Error ? e.message : e);
-      }
-    }
-  }
-
-  private async $getHistoricalHashrate(req: Request, res: Response) {
-    let currentHashrate = 0, currentDifficulty = 0;
-    try {
-      currentHashrate = await bitcoinClient.getNetworkHashPs();
-      currentDifficulty = await bitcoinClient.getDifficulty();
-    } catch (e) {
-      logger.debug('Bitcoin Core is not available, using zeroed value for current hashrate and difficulty');
-    }
-
-    try {
-      const hashrates = await HashratesRepository.$getNetworkDailyHashrate(req.params.interval);
-      const difficulty = await DifficultyAdjustmentsRepository.$getAdjustments(req.params.interval, false);
-      const blockCount = await BlocksRepository.$blockCount(null, null);
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.header('X-total-count', blockCount.toString());
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 300).toUTCString());
-      res.json({
-        hashrates: hashrates,
-        difficulty: difficulty,
-        currentHashrate: currentHashrate,
-        currentDifficulty: currentDifficulty,
-      });
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getHistoricalBlockFees(req: Request, res: Response) {
-    try {
-      const blockFees = await mining.$getHistoricalBlockFees(req.params.interval);
-      const blockCount = await BlocksRepository.$blockCount(null, null);
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.header('X-total-count', blockCount.toString());
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(blockFees);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getHistoricalBlockRewards(req: Request, res: Response) {
-    try {
-      const blockRewards = await mining.$getHistoricalBlockRewards(req.params.interval);
-      const blockCount = await BlocksRepository.$blockCount(null, null);
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.header('X-total-count', blockCount.toString());
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(blockRewards);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getHistoricalBlockFeeRates(req: Request, res: Response) {
-    try {
-      const blockFeeRates = await mining.$getHistoricalBlockFeeRates(req.params.interval);
-      const blockCount = await BlocksRepository.$blockCount(null, null);
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.header('X-total-count', blockCount.toString());
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(blockFeeRates);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getHistoricalBlockSizeAndWeight(req: Request, res: Response) {
-    try {
-      const blockSizes = await mining.$getHistoricalBlockSizes(req.params.interval);
-      const blockWeights = await mining.$getHistoricalBlockWeights(req.params.interval);
-      const blockCount = await BlocksRepository.$blockCount(null, null);
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.header('X-total-count', blockCount.toString());
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json({
-        sizes: blockSizes,
-        weights: blockWeights
-      });
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getDifficultyAdjustments(req: Request, res: Response) {
-    try {
-      const difficulty = await DifficultyAdjustmentsRepository.$getRawAdjustments(req.params.interval, true);
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 300).toUTCString());
-      res.json(difficulty.map(adj => [adj.time, adj.height, adj.difficulty, adj.adjustment]));
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getRewardStats(req: Request, res: Response) {
-    try {
-      const response = await mining.$getRewardStats(parseInt(req.params.blockCount, 10));
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(response);
-    } catch (e) {
-      res.status(500).end();
-    }
-  }
-
-  private async $getHistoricalBlockPrediction(req: Request, res: Response) {
-    try {
-      const blockPredictions = await mining.$getBlockPredictionsHistory(req.params.interval);
-      const blockCount = await BlocksAuditsRepository.$getPredictionsCount();
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.header('X-total-count', blockCount.toString());
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(blockPredictions.map(prediction => [prediction.time, prediction.height, prediction.match_rate]));
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  public async $getBlockAudit(req: Request, res: Response) {
-    try {
-      const audit = await BlocksAuditsRepository.$getBlockAudit(req.params.hash);
-
-      if (!audit) {
-        res.status(204).send(`This block has not been audited.`);
-        return;
-      }
-
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 3600 * 24).toUTCString());
-      res.json(audit);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getHeightFromTimestamp(req: Request, res: Response) {
-    try {
-      const timestamp = parseInt(req.params.timestamp, 10);
-      // This will prevent people from entering milliseconds etc.
-      // Block timestamps are allowed to be up to 2 hours off, so 24 hours
-      // will never put the maximum value before the most recent block
-      const nowPlus1day = Math.floor(Date.now() / 1000) + 60 * 60 * 24;
-      // Prevent non-integers that are not seconds
-      if (!/^[1-9][0-9]*$/.test(req.params.timestamp) || timestamp > nowPlus1day) {
-        throw new Error(`Invalid timestamp, value must be Unix seconds`);
-      }
-      const result = await BlocksRepository.$getBlockHeightFromTimestamp(
-        timestamp,
-      );
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 300).toUTCString());
-      res.json(result);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async $getBlockAuditScores(req: Request, res: Response) {
-    try {
-      let height = req.params.height === undefined ? undefined : parseInt(req.params.height, 10);
-      if (height == null) {
-        height = await BlocksRepository.$mostRecentBlockHeight();
-      }
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-      res.json(await BlocksAuditsRepository.$getBlockAuditScores(height, height - 15));
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  public async $getBlockAuditScore(req: Request, res: Response) {
-    try {
-      const audit = await BlocksAuditsRepository.$getBlockAuditScore(req.params.hash);
-
-      res.header('Pragma', 'public');
-      res.header('Cache-control', 'public');
-      res.setHeader('Expires', new Date(Date.now() + 1000 * 3600 * 24).toUTCString());
-      res.json(audit || 'null');
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-}
-
-export default new MiningRoutes();

backend/src/api/mining/mining.ts

@@ -1,592 +0,0 @@
-import { BlockPrice, PoolInfo, PoolStats, RewardStats } from '../../mempool.interfaces';
-import BlocksRepository from '../../repositories/BlocksRepository';
-import PoolsRepository from '../../repositories/PoolsRepository';
-import HashratesRepository from '../../repositories/HashratesRepository';
-import bitcoinClient from '../bitcoin/bitcoin-client';
-import logger from '../../logger';
-import { Common } from '../common';
-import loadingIndicators from '../loading-indicators';
-import { escape } from 'mysql2';
-import DifficultyAdjustmentsRepository from '../../repositories/DifficultyAdjustmentsRepository';
-import config from '../../config';
-import BlocksAuditsRepository from '../../repositories/BlocksAuditsRepository';
-import PricesRepository from '../../repositories/PricesRepository';
-import { bitcoinCoreApi } from '../bitcoin/bitcoin-api-factory';
-import { IEsploraApi } from '../bitcoin/esplora-api.interface';
-import database from '../../database';
-
-class Mining {
-  private blocksPriceIndexingRunning = false;
-  public lastHashrateIndexingDate: number | null = null;
-  public lastWeeklyHashrateIndexingDate: number | null = null;
-
-  /**
-   * Get historical block predictions match rate
-   */
-   public async $getBlockPredictionsHistory(interval: string | null = null): Promise<any> {
-    return await BlocksAuditsRepository.$getBlockPredictionsHistory(
-      this.getTimeRange(interval),
-      Common.getSqlInterval(interval)
-    );
-  }
-
-  /**
-   * Get historical block total fee
-   */
-  public async $getHistoricalBlockFees(interval: string | null = null): Promise<any> {
-    return await BlocksRepository.$getHistoricalBlockFees(
-      this.getTimeRange(interval, 5),
-      Common.getSqlInterval(interval)
-    );
-  }
-
-  /**
-   * Get historical block rewards
-   */
-  public async $getHistoricalBlockRewards(interval: string | null = null): Promise<any> {
-    return await BlocksRepository.$getHistoricalBlockRewards(
-      this.getTimeRange(interval),
-      Common.getSqlInterval(interval)
-    );
-  }
-
-  /**
-   * Get historical block fee rates percentiles
-   */
-   public async $getHistoricalBlockFeeRates(interval: string | null = null): Promise<any> {
-    return await BlocksRepository.$getHistoricalBlockFeeRates(
-      this.getTimeRange(interval),
-      Common.getSqlInterval(interval)
-    );
-  }
-
-  /**
-   * Get historical block sizes
-   */
-   public async $getHistoricalBlockSizes(interval: string | null = null): Promise<any> {
-    return await BlocksRepository.$getHistoricalBlockSizes(
-      this.getTimeRange(interval),
-      Common.getSqlInterval(interval)
-    );
-  }
-
-  /**
-   * Get historical block weights
-   */
-   public async $getHistoricalBlockWeights(interval: string | null = null): Promise<any> {
-    return await BlocksRepository.$getHistoricalBlockWeights(
-      this.getTimeRange(interval),
-      Common.getSqlInterval(interval)
-    );
-  }
-
-  /**
-   * Generate high level overview of the pool ranks and general stats
-   */
-  public async $getPoolsStats(interval: string | null): Promise<object> {
-    const poolsStatistics = {};
-
-    const poolsInfo: PoolInfo[] = await PoolsRepository.$getPoolsInfo(interval);
-    const emptyBlocks: any[] = await BlocksRepository.$countEmptyBlocks(null, interval);
-
-    const poolsStats: PoolStats[] = [];
-    let rank = 1;
-
-    poolsInfo.forEach((poolInfo: PoolInfo) => {
-      const emptyBlocksCount = emptyBlocks.filter((emptyCount) => emptyCount.poolId === poolInfo.poolId);
-      const poolStat: PoolStats = {
-        poolId: poolInfo.poolId, // mysql row id
-        name: poolInfo.name,
-        link: poolInfo.link,
-        blockCount: poolInfo.blockCount,
-        rank: rank++,
-        emptyBlocks: emptyBlocksCount.length > 0 ? emptyBlocksCount[0]['count'] : 0,
-        slug: poolInfo.slug,
-        avgMatchRate: poolInfo.avgMatchRate !== null ? Math.round(100 * poolInfo.avgMatchRate) / 100 : null,
-      };
-      poolsStats.push(poolStat);
-    });
-
-    poolsStatistics['pools'] = poolsStats;
-
-    const blockCount: number = await BlocksRepository.$blockCount(null, interval);
-    poolsStatistics['blockCount'] = blockCount;
-
-    const totalBlock24h: number = await BlocksRepository.$blockCount(null, '24h');
-
-    try {
-      poolsStatistics['lastEstimatedHashrate'] = await bitcoinClient.getNetworkHashPs(totalBlock24h);
-    } catch (e) {
-      poolsStatistics['lastEstimatedHashrate'] = 0;
-      logger.debug('Bitcoin Core is not available, using zeroed value for current hashrate', logger.tags.mining);
-    }
-
-    return poolsStatistics;
-  }
-
-  /**
-   * Get all mining pool stats for a pool
-   */
-  public async $getPoolStat(slug: string): Promise<object> {
-    const pool = await PoolsRepository.$getPool(slug);
-    if (!pool) {
-      throw new Error('This mining pool does not exist ' + escape(slug));
-    }
-
-    const blockCount: number = await BlocksRepository.$blockCount(pool.id);
-    const totalBlock: number = await BlocksRepository.$blockCount(null, null);
-
-    const blockCount24h: number = await BlocksRepository.$blockCount(pool.id, '24h');
-    const totalBlock24h: number = await BlocksRepository.$blockCount(null, '24h');
-
-    const blockCount1w: number = await BlocksRepository.$blockCount(pool.id, '1w');
-    const totalBlock1w: number = await BlocksRepository.$blockCount(null, '1w');
-
-    const avgHealth = await BlocksRepository.$getAvgBlockHealthPerPoolId(pool.id);    
-    const totalReward = await BlocksRepository.$getTotalRewardForPoolId(pool.id);    
-
-    let currentEstimatedHashrate = 0;
-    try {
-      currentEstimatedHashrate = await bitcoinClient.getNetworkHashPs(totalBlock24h);
-    } catch (e) {
-      logger.debug('Bitcoin Core is not available, using zeroed value for current hashrate', logger.tags.mining);
-    }
-
-    return {
-      pool: pool,
-      blockCount: {
-        'all': blockCount,
-        '24h': blockCount24h,
-        '1w': blockCount1w,
-      },
-      blockShare: {
-        'all': blockCount / totalBlock,
-        '24h': blockCount24h / totalBlock24h,
-        '1w': blockCount1w / totalBlock1w,
-      },
-      estimatedHashrate: currentEstimatedHashrate * (blockCount24h / totalBlock24h),
-      reportedHashrate: null,
-      avgBlockHealth: avgHealth,
-      totalReward: totalReward,
-    };
-  }
-
-  /**
-   * Get miner reward stats
-   */
-  public async $getRewardStats(blockCount: number): Promise<RewardStats> {
-    return await BlocksRepository.$getBlockStats(blockCount);
-  }
-
-  /**
-   * Generate weekly mining pool hashrate history
-   */
-  public async $generatePoolHashrateHistory(): Promise<void> {
-    const now = new Date();
-
-    // Run only if:
-    // * this.lastWeeklyHashrateIndexingDate is set to null (node backend restart, reorg)
-    // * we started a new week (around Monday midnight)
-    const runIndexing = this.lastWeeklyHashrateIndexingDate === null ||
-      now.getUTCDay() === 1 && this.lastWeeklyHashrateIndexingDate !== now.getUTCDate();
-    if (!runIndexing) {
-      logger.debug(`Pool hashrate history indexing is up to date, nothing to do`, logger.tags.mining);
-      return;
-    }
-
-    try {
-      const oldestConsecutiveBlockTimestamp = 1000 * (await BlocksRepository.$getOldestConsecutiveBlock()).timestamp;
-
-      const genesisBlock: IEsploraApi.Block = await bitcoinCoreApi.$getBlock(await bitcoinClient.getBlockHash(0));
-      const genesisTimestamp = genesisBlock.timestamp * 1000;
-
-      const indexedTimestamp = await HashratesRepository.$getWeeklyHashrateTimestamps();
-      const hashrates: any[] = [];
- 
-      const lastMonday = new Date(now.setDate(now.getDate() - (now.getDay() + 6) % 7));
-      const lastMondayMidnight = this.getDateMidnight(lastMonday);
-      let toTimestamp = lastMondayMidnight.getTime();
-
-      const totalWeekIndexed = (await BlocksRepository.$blockCount(null, null)) / 1008;
-      let indexedThisRun = 0;
-      let totalIndexed = 0;
-      let newlyIndexed = 0;
-      const startedAt = new Date().getTime() / 1000;
-      let timer = new Date().getTime() / 1000;
-
-      logger.debug(`Indexing weekly mining pool hashrate`, logger.tags.mining);
-      loadingIndicators.setProgress('weekly-hashrate-indexing', 0);
-
-      while (toTimestamp > genesisTimestamp && toTimestamp > oldestConsecutiveBlockTimestamp) {
-        const fromTimestamp = toTimestamp - 604800000;
-
-        // Skip already indexed weeks
-        if (indexedTimestamp.includes(toTimestamp / 1000)) {
-          toTimestamp -= 604800000;
-          ++totalIndexed;
-          continue;
-        }
-
-        const blockStats: any = await BlocksRepository.$blockCountBetweenTimestamp(
-          null, fromTimestamp / 1000, toTimestamp / 1000);
-        const lastBlockHashrate = await bitcoinClient.getNetworkHashPs(blockStats.blockCount,
-          blockStats.lastBlockHeight);
-
-        let pools = await PoolsRepository.$getPoolsInfoBetween(fromTimestamp / 1000, toTimestamp / 1000);
-        const totalBlocks = pools.reduce((acc, pool) => acc + pool.blockCount, 0);
-        if (totalBlocks > 0) {
-          pools = pools.map((pool: any) => {
-            pool.hashrate = (pool.blockCount / totalBlocks) * lastBlockHashrate;
-            pool.share = (pool.blockCount / totalBlocks);
-            return pool;
-          });
-
-          for (const pool of pools) {
-            hashrates.push({
-              hashrateTimestamp: toTimestamp / 1000,
-              avgHashrate: pool['hashrate'] ,
-              poolId: pool.poolId,
-              share: pool['share'],
-              type: 'weekly',
-            });
-          }
-
-          newlyIndexed += hashrates.length / Math.max(1, pools.length);
-          await HashratesRepository.$saveHashrates(hashrates);
-          hashrates.length = 0;
-        }
-
-        const elapsedSeconds = Math.max(1, Math.round((new Date().getTime() / 1000) - timer));
-        if (elapsedSeconds > 1) {
-          const runningFor = Math.max(1, Math.round((new Date().getTime() / 1000) - startedAt));
-          const weeksPerSeconds = Math.max(1, Math.round(indexedThisRun / elapsedSeconds));
-          const progress = Math.round(totalIndexed / totalWeekIndexed * 10000) / 100;
-          const formattedDate = new Date(fromTimestamp).toUTCString();
-          logger.debug(`Getting weekly pool hashrate for ${formattedDate} | ~${weeksPerSeconds.toFixed(2)} weeks/sec | total: ~${totalIndexed}/${Math.round(totalWeekIndexed)} (${progress}%) | elapsed: ${runningFor} seconds`, logger.tags.mining);
-          timer = new Date().getTime() / 1000;
-          indexedThisRun = 0;
-          loadingIndicators.setProgress('weekly-hashrate-indexing', progress, false);
-        }
-
-        toTimestamp -= 604800000;
-        ++indexedThisRun;
-        ++totalIndexed;
-      }
-      this.lastWeeklyHashrateIndexingDate = new Date().getUTCDate();
-      if (newlyIndexed > 0) {
-        logger.info(`Weekly mining pools hashrates indexing completed: indexed ${newlyIndexed} weeks`, logger.tags.mining);
-      } else {
-        logger.debug(`Weekly mining pools hashrates indexing completed: indexed ${newlyIndexed} weeks`, logger.tags.mining);
-      }
-      loadingIndicators.setProgress('weekly-hashrate-indexing', 100);
-    } catch (e) {
-      loadingIndicators.setProgress('weekly-hashrate-indexing', 100);
-      logger.err(`Weekly mining pools hashrates indexing failed. Trying again in 10 seconds. Reason: ${(e instanceof Error ? e.message : e)}`, logger.tags.mining);
-      throw e;
-    }
-  }
-
-  /**
-   * Generate daily hashrate data
-   */
-  public async $generateNetworkHashrateHistory(): Promise<void> {
-    // We only run this once a day around midnight
-    const today = new Date().getUTCDate();
-    if (today === this.lastHashrateIndexingDate) {
-      logger.debug(`Network hashrate history indexing is up to date, nothing to do`, logger.tags.mining);
-      return;
-    }
-
-    const oldestConsecutiveBlockTimestamp = 1000 * (await BlocksRepository.$getOldestConsecutiveBlock()).timestamp;
-
-    try {
-      const genesisBlock: IEsploraApi.Block = await bitcoinCoreApi.$getBlock(await bitcoinClient.getBlockHash(0));
-      const genesisTimestamp = genesisBlock.timestamp * 1000;
-      const indexedTimestamp = (await HashratesRepository.$getRawNetworkDailyHashrate(null)).map(hashrate => hashrate.timestamp);
-      const lastMidnight = this.getDateMidnight(new Date());
-      let toTimestamp = Math.round(lastMidnight.getTime());
-      const hashrates: any[] = [];
-
-      const totalDayIndexed = (await BlocksRepository.$blockCount(null, null)) / 144;
-      let indexedThisRun = 0;
-      let totalIndexed = 0;
-      let newlyIndexed = 0;
-      const startedAt = new Date().getTime() / 1000;
-      let timer = new Date().getTime() / 1000;
-
-      logger.debug(`Indexing daily network hashrate`, logger.tags.mining);
-      loadingIndicators.setProgress('daily-hashrate-indexing', 0);
-
-      while (toTimestamp > genesisTimestamp && toTimestamp > oldestConsecutiveBlockTimestamp) {
-        const fromTimestamp = toTimestamp - 86400000;
-
-        // Skip already indexed days
-        if (indexedTimestamp.includes(toTimestamp / 1000)) {
-          toTimestamp -= 86400000;
-          ++totalIndexed;
-          continue;
-        }
-
-        const blockStats: any = await BlocksRepository.$blockCountBetweenTimestamp(
-          null, fromTimestamp / 1000, toTimestamp / 1000);
-        const lastBlockHashrate = blockStats.blockCount === 0 ? 0 : await bitcoinClient.getNetworkHashPs(blockStats.blockCount,
-          blockStats.lastBlockHeight);
-
-        hashrates.push({
-          hashrateTimestamp: toTimestamp / 1000,
-          avgHashrate: lastBlockHashrate,
-          poolId: 0,
-          share: 1,
-          type: 'daily',
-        });
-
-        if (hashrates.length > 10) {
-          newlyIndexed += hashrates.length;
-          await HashratesRepository.$saveHashrates(hashrates);
-          hashrates.length = 0;
-        }
-
-        const elapsedSeconds = Math.max(1, Math.round((new Date().getTime() / 1000) - timer));
-        if (elapsedSeconds > 1) {
-          const runningFor = Math.max(1, Math.round((new Date().getTime() / 1000) - startedAt));
-          const daysPerSeconds = Math.max(1, Math.round(indexedThisRun / elapsedSeconds));
-          const progress = Math.round(totalIndexed / totalDayIndexed * 10000) / 100;
-          const formattedDate = new Date(fromTimestamp).toUTCString();
-          logger.debug(`Getting network daily hashrate for ${formattedDate} | ~${daysPerSeconds.toFixed(2)} days/sec | total: ~${totalIndexed}/${Math.round(totalDayIndexed)} (${progress}%) | elapsed: ${runningFor} seconds`, logger.tags.mining);
-          timer = new Date().getTime() / 1000;
-          indexedThisRun = 0;
-          loadingIndicators.setProgress('daily-hashrate-indexing', progress);
-        }
-
-        toTimestamp -= 86400000;
-        ++indexedThisRun;
-        ++totalIndexed;
-      }
-
-      // Add genesis block manually
-      if (config.MEMPOOL.INDEXING_BLOCKS_AMOUNT === -1 && !indexedTimestamp.includes(genesisTimestamp / 1000)) {
-        hashrates.push({
-          hashrateTimestamp: genesisTimestamp / 1000,
-          avgHashrate: await bitcoinClient.getNetworkHashPs(1, 1),
-          poolId: 0,
-          share: 1,
-          type: 'daily',
-        });
-      }
-
-      newlyIndexed += hashrates.length;
-      await HashratesRepository.$saveHashrates(hashrates);
-
-      this.lastHashrateIndexingDate = new Date().getUTCDate();
-      if (newlyIndexed > 0) {
-        logger.info(`Daily network hashrate indexing completed: indexed ${newlyIndexed} days`, logger.tags.mining);
-      } else {
-        logger.debug(`Daily network hashrate indexing completed: indexed ${newlyIndexed} days`, logger.tags.mining);
-      }
-      loadingIndicators.setProgress('daily-hashrate-indexing', 100);
-    } catch (e) {
-      loadingIndicators.setProgress('daily-hashrate-indexing', 100);
-      logger.err(`Daily network hashrate indexing failed. Trying again later. Reason: ${(e instanceof Error ? e.message : e)}`, logger.tags.mining);
-      throw e;
-    }
-  }
-
-  /**
-   * Index difficulty adjustments
-   */
-  public async $indexDifficultyAdjustments(): Promise<void> {
-    const indexedHeightsArray = await DifficultyAdjustmentsRepository.$getAdjustmentsHeights();
-    const indexedHeights = {};
-    for (const height of indexedHeightsArray) {
-      indexedHeights[height] = true;
-    }
-
-    const blocks: any = await BlocksRepository.$getBlocksDifficulty();
-    const genesisBlock: IEsploraApi.Block = await bitcoinCoreApi.$getBlock(await bitcoinClient.getBlockHash(0));
-    let currentDifficulty = genesisBlock.difficulty;
-    let totalIndexed = 0;
-
-    if (config.MEMPOOL.INDEXING_BLOCKS_AMOUNT === -1 && indexedHeights[0] !== true) {
-      await DifficultyAdjustmentsRepository.$saveAdjustments({
-        time: genesisBlock.timestamp,
-        height: 0,
-        difficulty: currentDifficulty,
-        adjustment: 0.0,
-      });
-    }
-
-    const oldestConsecutiveBlock = await BlocksRepository.$getOldestConsecutiveBlock();
-    if (config.MEMPOOL.INDEXING_BLOCKS_AMOUNT !== -1) {
-      currentDifficulty = oldestConsecutiveBlock.difficulty;
-    }
-
-    let totalBlockChecked = 0;
-    let timer = new Date().getTime() / 1000;
-
-    for (const block of blocks) {
-      if (block.difficulty !== currentDifficulty) {
-        if (indexedHeights[block.height] === true) { // Already indexed
-          if (block.height >= oldestConsecutiveBlock.height) {
-            currentDifficulty = block.difficulty;
-          }
-          continue;          
-        }
-
-        let adjustment = block.difficulty / currentDifficulty;
-        adjustment = Math.round(adjustment * 1000000) / 1000000; // Remove float point noise
-
-        await DifficultyAdjustmentsRepository.$saveAdjustments({
-          time: block.time,
-          height: block.height,
-          difficulty: block.difficulty,
-          adjustment: adjustment,
-        });
-
-        totalIndexed++;
-        if (block.height >= oldestConsecutiveBlock.height) {
-          currentDifficulty = block.difficulty;
-        }
-    }
-
-      totalBlockChecked++;
-      const elapsedSeconds = Math.max(1, Math.round((new Date().getTime() / 1000) - timer));
-      if (elapsedSeconds > 5) {
-        const progress = Math.round(totalBlockChecked / blocks.length * 100);
-        logger.info(`Indexing difficulty adjustment at block #${block.height} | Progress: ${progress}%`, logger.tags.mining);
-        timer = new Date().getTime() / 1000;
-      }
-    }
-
-    if (totalIndexed > 0) {
-      logger.info(`Indexed ${totalIndexed} difficulty adjustments`, logger.tags.mining);
-    } else {
-      logger.debug(`Indexed ${totalIndexed} difficulty adjustments`, logger.tags.mining);
-    }
-  }
-
-  /**
-   * Create a link between blocks and the latest price at when they were mined
-   */
-  public async $indexBlockPrices(): Promise<void> {
-    if (this.blocksPriceIndexingRunning === true) {
-      return;
-    }
-    this.blocksPriceIndexingRunning = true;
-
-    try {
-      const prices: any[] = await PricesRepository.$getPricesTimesAndId();    
-      const blocksWithoutPrices: any[] = await BlocksRepository.$getBlocksWithoutPrice();
-
-      let totalInserted = 0;
-      const blocksPrices: BlockPrice[] = [];
-
-      for (const block of blocksWithoutPrices) {
-        // Quick optimisation, out mtgox feed only goes back to 2010-07-19 02:00:00, so skip the first 68951 blocks
-        if (['mainnet', 'testnet'].includes(config.MEMPOOL.NETWORK) && block.height < 68951) {
-          blocksPrices.push({
-            height: block.height,
-            priceId: prices[0].id,
-          });
-          continue;
-        }
-        for (const price of prices) {
-          if (block.timestamp < price.time) {
-            blocksPrices.push({
-              height: block.height,
-              priceId: price.id,
-            });
-            break;
-          };
-        }
-
-        if (blocksPrices.length >= 100000) {
-          totalInserted += blocksPrices.length;
-          let logStr = `Linking ${blocksPrices.length} blocks to their closest price`;
-          if (blocksWithoutPrices.length > 200000) {
-            logStr += ` | Progress ${Math.round(totalInserted / blocksWithoutPrices.length * 100)}%`;
-          }
-          logger.debug(logStr, logger.tags.mining);
-          await BlocksRepository.$saveBlockPrices(blocksPrices);
-          blocksPrices.length = 0;
-        }
-      }
-
-      if (blocksPrices.length > 0) {
-        totalInserted += blocksPrices.length;
-        let logStr = `Linking ${blocksPrices.length} blocks to their closest price`;
-        if (blocksWithoutPrices.length > 200000) {
-          logStr += ` | Progress ${Math.round(totalInserted / blocksWithoutPrices.length * 100)}%`;
-        }
-        logger.debug(logStr, logger.tags.mining);
-        await BlocksRepository.$saveBlockPrices(blocksPrices);
-      }
-    } catch (e) {
-      this.blocksPriceIndexingRunning = false;
-      throw e;
-    }
-
-    this.blocksPriceIndexingRunning = false;
-  }
-
-  /**
-   * Index core coinstatsindex
-   */
-  public async $indexCoinStatsIndex(): Promise<void> {
-    let timer = new Date().getTime() / 1000;
-    let totalIndexed = 0;
-
-    const blockchainInfo = await bitcoinClient.getBlockchainInfo();
-    let currentBlockHeight = blockchainInfo.blocks;
-
-    while (currentBlockHeight > 0) {
-      const indexedBlocks = await BlocksRepository.$getBlocksMissingCoinStatsIndex(
-        currentBlockHeight, currentBlockHeight - 10000);
-        
-      for (const block of indexedBlocks) {
-        const txoutset = await bitcoinClient.getTxoutSetinfo('none', block.height);
-        await BlocksRepository.$updateCoinStatsIndexData(block.hash, txoutset.txouts,
-          Math.round(txoutset.block_info.prevout_spent * 100000000));        
-        ++totalIndexed;
-
-        const elapsedSeconds = Math.max(1, new Date().getTime() / 1000 - timer);
-        if (elapsedSeconds > 5) {
-          logger.info(`Indexing coinstatsindex data for block #${block.height}. Indexed ${totalIndexed} blocks.`, logger.tags.mining);
-          timer = new Date().getTime() / 1000;
-        }
-      }
-
-      currentBlockHeight -= 10000;
-    }
-
-    if (totalIndexed) {
-      logger.info(`Indexing missing coinstatsindex data completed`, logger.tags.mining);
-    }
-  }
-
-  private getDateMidnight(date: Date): Date {
-    date.setUTCHours(0);
-    date.setUTCMinutes(0);
-    date.setUTCSeconds(0);
-    date.setUTCMilliseconds(0);
-
-    return date;
-  }
-
-  private getTimeRange(interval: string | null, scale = 1): number {
-    switch (interval) {
-      case '4y': return 43200 * scale; // 12h
-      case '3y': return 43200 * scale; // 12h
-      case '2y': return 28800 * scale; // 8h
-      case '1y': return 28800 * scale; // 8h
-      case '6m': return 10800 * scale; // 3h
-      case '3m': return 7200 * scale; // 2h
-      case '1m': return 1800 * scale; // 30min
-      case '1w': return 300 * scale; // 5min
-      case '3d': return 1 * scale;
-      case '24h': return 1 * scale;
-      default: return 86400 * scale;
-    }
-  }
-}
-
-export default new Mining();

backend/src/api/pools-parser.ts

@@ -1,162 +0,0 @@
-import DB from '../database';
-import logger from '../logger';
-import config from '../config';
-import PoolsRepository from '../repositories/PoolsRepository';
-import { PoolTag } from '../mempool.interfaces';
-import diskCache from './disk-cache';
-
-class PoolsParser {
-  miningPools: any[] = [];
-  unknownPool: any = {
-    'id': 0,
-    'name': 'Unknown',
-    'link': 'https://learnmeabitcoin.com/technical/coinbase-transaction',
-    'regexes': '[]',
-    'addresses': '[]',
-    'slug': 'unknown'
-  };
-  private uniqueLogs: string[] = [];
-
-  private uniqueLog(loggerFunction: any, msg: string): void {
-    if (this.uniqueLogs.includes(msg)) {
-      return;
-    }
-    this.uniqueLogs.push(msg);
-    loggerFunction(msg);
-  }
-
-  public setMiningPools(pools): void {
-    for (const pool of pools) {
-      pool.regexes = pool.tags;
-      pool.slug = pool.name.replace(/[^a-z0-9]/gi, '').toLowerCase();
-      delete(pool.tags);
-    }
-    this.miningPools = pools;
-  }
-
-  /**
-   * Populate our db with updated mining pool definition
-   * @param pools 
-   */
-  public async migratePoolsJson(): Promise<void> {
-    // We also need to wipe the backend cache to make sure we don't serve blocks with
-    // the wrong mining pool (usually happen with unknown blocks)
-    diskCache.wipeCache();
-
-    await this.$insertUnknownPool();
-
-    for (const pool of this.miningPools) {
-      if (!pool.id) {
-        logger.info(`Mining pool ${pool.name} has no unique 'id' defined. Skipping.`);
-        continue;
-      }
-
-      const poolDB = await PoolsRepository.$getPoolByUniqueId(pool.id, false);
-      if (!poolDB) {
-        // New mining pool
-        const slug = pool.name.replace(/[^a-z0-9]/gi, '').toLowerCase();
-        logger.debug(`Inserting new mining pool ${pool.name}`);
-        await PoolsRepository.$insertNewMiningPool(pool, slug);
-        await this.$deleteUnknownBlocks();
-      } else {
-        if (poolDB.name !== pool.name) {
-          // Pool has been renamed
-          const newSlug = pool.name.replace(/[^a-z0-9]/gi, '').toLowerCase();
-          logger.warn(`Renaming ${poolDB.name} mining pool to ${pool.name}. Slug has been updated. Maybe you want to make a redirection from 'https://mempool.space/mining/pool/${poolDB.slug}' to 'https://mempool.space/mining/pool/${newSlug}`);
-          await PoolsRepository.$renameMiningPool(poolDB.id, newSlug, pool.name);
-        }
-        if (poolDB.link !== pool.link) {
-          // Pool link has changed
-          logger.debug(`Updating link for ${pool.name} mining pool`);
-          await PoolsRepository.$updateMiningPoolLink(poolDB.id, pool.link);
-        }
-        if (JSON.stringify(pool.addresses) !== poolDB.addresses ||
-          JSON.stringify(pool.regexes) !== poolDB.regexes) {
-          // Pool addresses changed or coinbase tags changed
-          logger.notice(`Updating addresses and/or coinbase tags for ${pool.name} mining pool. If 'AUTOMATIC_BLOCK_REINDEXING' is enabled, we will re-index its blocks and 'unknown' blocks`);
-          await PoolsRepository.$updateMiningPoolTags(poolDB.id, pool.addresses, pool.regexes);
-          await this.$deleteBlocksForPool(poolDB);
-        }
-      }
-    }
-
-    logger.info('Mining pools-v2.json import completed');
-  }
-
-  /**
-   * Manually add the 'unknown pool'
-   */
-  public async $insertUnknownPool(): Promise<void> {
-    if (!config.DATABASE.ENABLED) {
-      return;
-    }
-
-    try {
-      const [rows]: any[] = await DB.query({ sql: 'SELECT name from pools where name="Unknown"', timeout: 120000 });
-      if (rows.length === 0) {
-        await DB.query({
-          sql: `INSERT INTO pools(name, link, regexes, addresses, slug, unique_id)
-          VALUES("${this.unknownPool.name}", "${this.unknownPool.link}", "[]", "[]", "${this.unknownPool.slug}", 0);
-        `});
-      } else {
-        await DB.query(`UPDATE pools
-          SET name='${this.unknownPool.name}', link='${this.unknownPool.link}',
-          regexes='[]', addresses='[]',
-          slug='${this.unknownPool.slug}',
-          unique_id=0
-          WHERE slug='${this.unknownPool.slug}'
-        `);
-      }
-    } catch (e) {
-      logger.err(`Unable to insert or update "Unknown" mining pool. Reason: ${e instanceof Error ? e.message : e}`);
-    }
-  }
-
-  /**
-   * Delete indexed blocks for an updated mining pool
-   * 
-   * @param pool 
-   */
-  private async $deleteBlocksForPool(pool: PoolTag): Promise<void> {
-    if (config.MEMPOOL.AUTOMATIC_BLOCK_REINDEXING === false) {
-      return;
-    }
-
-    // Get oldest blocks mined by the pool and assume pools-v2.json updates only concern most recent years
-    // Ignore early days of Bitcoin as there were no mining pool yet
-    const [oldestPoolBlock]: any[] = await DB.query(`
-      SELECT height
-      FROM blocks
-      WHERE pool_id = ?
-      ORDER BY height
-      LIMIT 1`,
-      [pool.id]
-    );
-    const oldestBlockHeight = oldestPoolBlock.length ?? 0 > 0 ? oldestPoolBlock[0].height : 130635;
-    const [unknownPool] = await DB.query(`SELECT id from pools where slug = "unknown"`);
-    this.uniqueLog(logger.notice, `Deleting blocks with unknown mining pool from height ${oldestBlockHeight} for re-indexing`);
-    await DB.query(`
-      DELETE FROM blocks
-      WHERE pool_id = ? AND height >= ${oldestBlockHeight}`,
-      [unknownPool[0].id]
-    );
-    logger.notice(`Deleting blocks from ${pool.name} mining pool for re-indexing`);
-    await DB.query(`
-      DELETE FROM blocks
-      WHERE pool_id = ?`,
-      [pool.id]
-    );
-  }
-
-  private async $deleteUnknownBlocks(): Promise<void> {
-    const [unknownPool] = await DB.query(`SELECT id from pools where slug = "unknown"`);
-    this.uniqueLog(logger.notice, `Deleting blocks with unknown mining pool from height 130635 for re-indexing`);
-    await DB.query(`
-      DELETE FROM blocks
-      WHERE pool_id = ? AND height >= 130635`,
-      [unknownPool[0].id]
-    );
-  }
-}
-
-export default new PoolsParser();

backend/src/api/projected-blocks.ts

@@ -0,0 +1,101 @@
+const config = require('../../mempool-config.json');
+import { ITransaction, IProjectedBlock, IMempool, IProjectedBlockInternal } from '../interfaces';
+
+class ProjectedBlocks {
+  private transactionsSorted: ITransaction[] = [];
+
+  constructor() {}
+
+  public getProjectedBlockFeesForBlock(index: number) {
+    const projectedBlock = this.getProjectedBlocksInternal()[index];
+
+    if (!projectedBlock) {
+      throw new Error('No projected block for that index');
+    }
+
+    return projectedBlock.txFeePerVsizes.map((fpv) => {
+      return {'fpv': fpv};
+    });
+  }
+
+  public updateProjectedBlocks(memPool: IMempool): void {
+    const latestMempool = memPool;
+    const memPoolArray: ITransaction[] = [];
+    for (const i in latestMempool) {
+      if (latestMempool.hasOwnProperty(i)) {
+        memPoolArray.push(latestMempool[i]);
+      }
+    }
+    memPoolArray.sort((a, b) => b.feePerWeightUnit - a.feePerWeightUnit);
+    this.transactionsSorted = memPoolArray.filter((tx) => tx.feePerWeightUnit);
+  }
+
+  public getProjectedBlocks(txId?: string, numberOfBlocks: number = config.DEFAULT_PROJECTED_BLOCKS_AMOUNT): IProjectedBlock[] {
+    return this.getProjectedBlocksInternal(numberOfBlocks).map((projectedBlock) => {
+      return {
+        blockSize: projectedBlock.blockSize,
+        blockWeight: projectedBlock.blockWeight,
+        nTx: projectedBlock.nTx,
+        minFee: projectedBlock.minFee,
+        maxFee: projectedBlock.maxFee,
+        minWeightFee: projectedBlock.minWeightFee,
+        maxWeightFee: projectedBlock.maxWeightFee,
+        medianFee: projectedBlock.medianFee,
+        fees: projectedBlock.fees,
+        hasMytx: txId ? projectedBlock.txIds.some((tx) => tx === txId) : false
+      };
+    });
+  }
+
+  private getProjectedBlocksInternal(numberOfBlocks: number = config.DEFAULT_PROJECTED_BLOCKS_AMOUNT): IProjectedBlockInternal[] {
+    const projectedBlocks: IProjectedBlockInternal[] = [];
+    let blockWeight = 0;
+    let blockSize = 0;
+    let transactions: ITransaction[] = [];
+    this.transactionsSorted.forEach((tx) => {
+      if (blockWeight + tx.vsize * 4 < 4000000 || projectedBlocks.length === numberOfBlocks) {
+        blockWeight += tx.weight || tx.vsize * 4;
+        blockSize += tx.size;
+        transactions.push(tx);
+      } else {
+        projectedBlocks.push(this.dataToProjectedBlock(transactions, blockSize, blockWeight));
+        blockWeight = 0;
+        blockSize = 0;
+        transactions = [];
+      }
+    });
+    if (transactions.length) {
+      projectedBlocks.push(this.dataToProjectedBlock(transactions, blockSize, blockWeight));
+    }
+    return projectedBlocks;
+  }
+
+  private dataToProjectedBlock(transactions: ITransaction[], blockSize: number, blockWeight: number): IProjectedBlockInternal {
+    return {
+      blockSize: blockSize,
+      blockWeight: blockWeight,
+      nTx: transactions.length,
+      minFee: transactions[transactions.length - 1].feePerVsize,
+      maxFee: transactions[0].feePerVsize,
+      minWeightFee: transactions[transactions.length - 1].feePerWeightUnit,
+      maxWeightFee: transactions[0].feePerWeightUnit,
+      medianFee: this.median(transactions.map((tx) => tx.feePerVsize)),
+      txIds: transactions.map((tx) => tx.txid),
+      txFeePerVsizes: transactions.map((tx) => tx.feePerVsize).reverse(),
+      fees: transactions.map((tx) => tx.fee).reduce((acc, currValue) => acc + currValue),
+    };
+  }
+
+  private median(numbers: number[]) {
+    let medianNr = 0;
+    const numsLen = numbers.length;
+    if (numsLen % 2 === 0) {
+        medianNr = (numbers[numsLen / 2 - 1] + numbers[numsLen / 2]) / 2;
+    } else {
+        medianNr = numbers[(numsLen - 1) / 2];
+    }
+    return medianNr;
+  }
+}
+
+export default new ProjectedBlocks();

backend/src/api/rbf-cache.ts

@@ -1,65 +0,0 @@
-import { TransactionExtended } from "../mempool.interfaces";
-
-class RbfCache {
-  private replacedBy: { [txid: string]: string; } = {};
-  private replaces: { [txid: string]: string[] } = {};
-  private txs: { [txid: string]: TransactionExtended } = {};
-  private expiring: { [txid: string]: Date } = {};
-
-  constructor() {
-    setInterval(this.cleanup.bind(this), 1000 * 60 * 60);
-  }
-
-  public add(replacedTx: TransactionExtended, newTxId: string): void {
-    this.replacedBy[replacedTx.txid] = newTxId;
-    this.txs[replacedTx.txid] = replacedTx;
-    if (!this.replaces[newTxId]) {
-      this.replaces[newTxId] = [];
-    }
-    this.replaces[newTxId].push(replacedTx.txid);
-  }
-
-  public getReplacedBy(txId: string): string | undefined {
-    return this.replacedBy[txId];
-  }
-
-  public getReplaces(txId: string): string[] | undefined {
-    return this.replaces[txId];
-  }
-
-  public getTx(txId: string): TransactionExtended | undefined {
-    return this.txs[txId];
-  }
-
-  // flag a transaction as removed from the mempool
-  public evict(txid): void {
-    this.expiring[txid] = new Date(Date.now() + 1000 * 86400); // 24 hours
-  }
-
-  private cleanup(): void {
-    const currentDate = new Date();
-    for (const txid in this.expiring) {
-      if (this.expiring[txid] < currentDate) {
-        delete this.expiring[txid];
-        this.remove(txid);
-      }
-    }
-  }
-
-  // remove a transaction & all previous versions from the cache
-  private remove(txid): void {
-    // don't remove a transaction while a newer version remains in the mempool
-    if (this.replaces[txid] && !this.replacedBy[txid]) {
-      const replaces = this.replaces[txid];
-      delete this.replaces[txid];
-      for (const tx of replaces) {
-        // recursively remove prior versions from the cache
-        delete this.replacedBy[tx];
-        delete this.txs[tx];
-        this.remove(tx);
-      }
-    }
-  }
-}
-
-export default new RbfCache();

backend/src/api/statistics.ts

@@ -0,0 +1,389 @@
+import memPool from './mempool';
+import { DB } from '../database';
+
+import { ITransaction, IMempoolStats } from '../interfaces';
+
+class Statistics {
+  protected intervalTimer: NodeJS.Timer | undefined;
+  protected newStatisticsEntryCallback: Function | undefined;
+
+  public setNewStatisticsEntryCallback(fn: Function) {
+    this.newStatisticsEntryCallback = fn;
+  }
+
+  constructor() {
+  }
+
+  public startStatistics(): void {
+    const now = new Date();
+    const nextInterval = new Date(now.getFullYear(), now.getMonth(), now.getDate(), now.getHours(),
+      Math.floor(now.getMinutes() / 1) * 1 + 1, 0, 0);
+    const difference = nextInterval.getTime() - now.getTime();
+
+    setTimeout(() => {
+      this.runStatistics();
+      this.intervalTimer = setInterval(() => { this.runStatistics(); }, 1 * 60 * 1000);
+    }, difference);
+  }
+
+  private async runStatistics(): Promise<void> {
+    const currentMempool = memPool.getMempool();
+    const txPerSecond = memPool.getTxPerSecond();
+    const vBytesPerSecond = memPool.getVBytesPerSecond();
+
+    if (txPerSecond === 0) {
+      return;
+    }
+
+    console.log('Running statistics');
+
+    let memPoolArray: ITransaction[] = [];
+    for (const i in currentMempool) {
+      if (currentMempool.hasOwnProperty(i)) {
+        memPoolArray.push(currentMempool[i]);
+      }
+    }
+    // Remove 0 and undefined
+    memPoolArray = memPoolArray.filter((tx) => tx.feePerWeightUnit);
+
+    if (!memPoolArray.length) {
+      return;
+    }
+
+    memPoolArray.sort((a, b) => a.feePerWeightUnit - b.feePerWeightUnit);
+    const totalWeight = memPoolArray.map((tx) => tx.vsize).reduce((acc, curr) => acc + curr) * 4;
+    const totalFee = memPoolArray.map((tx) => tx.fee).reduce((acc, curr) => acc + curr);
+
+    const logFees = [1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 30, 40, 50, 60, 70, 80, 90, 100, 125, 150, 175, 200,
+      250, 300, 350, 400, 500, 600, 700, 800, 900, 1000, 1200, 1400, 1600, 1800, 2000];
+
+    const weightUnitFees: { [feePerWU: number]: number } = {};
+    const weightVsizeFees: { [feePerWU: number]: number } = {};
+
+    memPoolArray.forEach((transaction) => {
+      for (let i = 0; i < logFees.length; i++) {
+        if ((logFees[i] === 2000 && transaction.feePerWeightUnit >= 2000) || transaction.feePerWeightUnit <= logFees[i]) {
+          if (weightUnitFees[logFees[i]]) {
+            weightUnitFees[logFees[i]] += transaction.vsize * 4;
+          } else {
+            weightUnitFees[logFees[i]] = transaction.vsize * 4;
+          }
+          break;
+        }
+      }
+    });
+
+    memPoolArray.forEach((transaction) => {
+      for (let i = 0; i < logFees.length; i++) {
+        if ((logFees[i] === 2000 && transaction.feePerVsize >= 2000) || transaction.feePerVsize <= logFees[i]) {
+          if (weightVsizeFees[logFees[i]]) {
+            weightVsizeFees[logFees[i]] += transaction.vsize;
+          } else {
+            weightVsizeFees[logFees[i]] = transaction.vsize;
+          }
+          break;
+        }
+      }
+    });
+
+    const insertId = await this.$create({
+      added: 'NOW()',
+      unconfirmed_transactions: memPoolArray.length,
+      tx_per_second: txPerSecond,
+      vbytes_per_second: Math.round(vBytesPerSecond),
+      mempool_byte_weight: totalWeight,
+      total_fee: totalFee,
+      fee_data: JSON.stringify({
+        'wu': weightUnitFees,
+        'vsize': weightVsizeFees
+      }),
+      vsize_1: weightVsizeFees['1'] || 0,
+      vsize_2: weightVsizeFees['2'] || 0,
+      vsize_3: weightVsizeFees['3'] || 0,
+      vsize_4: weightVsizeFees['4'] || 0,
+      vsize_5: weightVsizeFees['5'] || 0,
+      vsize_6: weightVsizeFees['6'] || 0,
+      vsize_8: weightVsizeFees['8'] || 0,
+      vsize_10: weightVsizeFees['10'] || 0,
+      vsize_12: weightVsizeFees['12'] || 0,
+      vsize_15: weightVsizeFees['15'] || 0,
+      vsize_20: weightVsizeFees['20'] || 0,
+      vsize_30: weightVsizeFees['30'] || 0,
+      vsize_40: weightVsizeFees['40'] || 0,
+      vsize_50: weightVsizeFees['50'] || 0,
+      vsize_60: weightVsizeFees['60'] || 0,
+      vsize_70: weightVsizeFees['70'] || 0,
+      vsize_80: weightVsizeFees['80'] || 0,
+      vsize_90: weightVsizeFees['90'] || 0,
+      vsize_100: weightVsizeFees['100'] || 0,
+      vsize_125: weightVsizeFees['125'] || 0,
+      vsize_150: weightVsizeFees['150'] || 0,
+      vsize_175: weightVsizeFees['175'] || 0,
+      vsize_200: weightVsizeFees['200'] || 0,
+      vsize_250: weightVsizeFees['250'] || 0,
+      vsize_300: weightVsizeFees['300'] || 0,
+      vsize_350: weightVsizeFees['350'] || 0,
+      vsize_400: weightVsizeFees['400'] || 0,
+      vsize_500: weightVsizeFees['500'] || 0,
+      vsize_600: weightVsizeFees['600'] || 0,
+      vsize_700: weightVsizeFees['700'] || 0,
+      vsize_800: weightVsizeFees['800'] || 0,
+      vsize_900: weightVsizeFees['900'] || 0,
+      vsize_1000: weightVsizeFees['1000'] || 0,
+      vsize_1200: weightVsizeFees['1200'] || 0,
+      vsize_1400: weightVsizeFees['1400'] || 0,
+      vsize_1600: weightVsizeFees['1600'] || 0,
+      vsize_1800: weightVsizeFees['1800'] || 0,
+      vsize_2000: weightVsizeFees['2000'] || 0,
+    });
+
+    if (this.newStatisticsEntryCallback && insertId) {
+      const newStats = await this.$get(insertId);
+      this.newStatisticsEntryCallback(newStats);
+    }
+  }
+
+  private async $create(statistics: IMempoolStats): Promise<number | undefined> {
+    try {
+      const connection = await DB.pool.getConnection();
+      const query = `INSERT INTO statistics(
+              added,
+              unconfirmed_transactions,
+              tx_per_second,
+              vbytes_per_second,
+              mempool_byte_weight,
+              fee_data,
+              total_fee,
+              vsize_1,
+              vsize_2,
+              vsize_3,
+              vsize_4,
+              vsize_5,
+              vsize_6,
+              vsize_8,
+              vsize_10,
+              vsize_12,
+              vsize_15,
+              vsize_20,
+              vsize_30,
+              vsize_40,
+              vsize_50,
+              vsize_60,
+              vsize_70,
+              vsize_80,
+              vsize_90,
+              vsize_100,
+              vsize_125,
+              vsize_150,
+              vsize_175,
+              vsize_200,
+              vsize_250,
+              vsize_300,
+              vsize_350,
+              vsize_400,
+              vsize_500,
+              vsize_600,
+              vsize_700,
+              vsize_800,
+              vsize_900,
+              vsize_1000,
+              vsize_1200,
+              vsize_1400,
+              vsize_1600,
+              vsize_1800,
+              vsize_2000
+            )
+            VALUES (${statistics.added}, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?,
+               ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`;
+
+      const params: (string | number)[] = [
+        statistics.unconfirmed_transactions,
+        statistics.tx_per_second,
+        statistics.vbytes_per_second,
+        statistics.mempool_byte_weight,
+        statistics.fee_data,
+        statistics.total_fee,
+        statistics.vsize_1,
+        statistics.vsize_2,
+        statistics.vsize_3,
+        statistics.vsize_4,
+        statistics.vsize_5,
+        statistics.vsize_6,
+        statistics.vsize_8,
+        statistics.vsize_10,
+        statistics.vsize_12,
+        statistics.vsize_15,
+        statistics.vsize_20,
+        statistics.vsize_30,
+        statistics.vsize_40,
+        statistics.vsize_50,
+        statistics.vsize_60,
+        statistics.vsize_70,
+        statistics.vsize_80,
+        statistics.vsize_90,
+        statistics.vsize_100,
+        statistics.vsize_125,
+        statistics.vsize_150,
+        statistics.vsize_175,
+        statistics.vsize_200,
+        statistics.vsize_250,
+        statistics.vsize_300,
+        statistics.vsize_350,
+        statistics.vsize_400,
+        statistics.vsize_500,
+        statistics.vsize_600,
+        statistics.vsize_700,
+        statistics.vsize_800,
+        statistics.vsize_900,
+        statistics.vsize_1000,
+        statistics.vsize_1200,
+        statistics.vsize_1400,
+        statistics.vsize_1600,
+        statistics.vsize_1800,
+        statistics.vsize_2000,
+      ];
+      const [result]: any = await connection.query(query, params);
+      connection.release();
+      return result.insertId;
+    } catch (e) {
+      console.log('$create() error', e);
+    }
+  }
+
+  private getQueryForDays(days: number, groupBy: number) {
+
+    return `SELECT id, added, unconfirmed_transactions,
+            AVG(tx_per_second) AS tx_per_second,
+            AVG(vbytes_per_second) AS vbytes_per_second,
+            AVG(vsize_1) AS vsize_1,
+            AVG(vsize_2) AS vsize_2,
+            AVG(vsize_3) AS vsize_3,
+            AVG(vsize_4) AS vsize_4,
+            AVG(vsize_5) AS vsize_5,
+            AVG(vsize_6) AS vsize_6,
+            AVG(vsize_8) AS vsize_8,
+            AVG(vsize_10) AS vsize_10,
+            AVG(vsize_12) AS vsize_12,
+            AVG(vsize_15) AS vsize_15,
+            AVG(vsize_20) AS vsize_20,
+            AVG(vsize_30) AS vsize_30,
+            AVG(vsize_40) AS vsize_40,
+            AVG(vsize_50) AS vsize_50,
+            AVG(vsize_60) AS vsize_60,
+            AVG(vsize_70) AS vsize_70,
+            AVG(vsize_80) AS vsize_80,
+            AVG(vsize_90) AS vsize_90,
+            AVG(vsize_100) AS vsize_100,
+            AVG(vsize_125) AS vsize_125,
+            AVG(vsize_150) AS vsize_150,
+            AVG(vsize_175) AS vsize_175,
+            AVG(vsize_200) AS vsize_200,
+            AVG(vsize_250) AS vsize_250,
+            AVG(vsize_300) AS vsize_300,
+            AVG(vsize_350) AS vsize_350,
+            AVG(vsize_400) AS vsize_400,
+            AVG(vsize_500) AS vsize_500,
+            AVG(vsize_600) AS vsize_600,
+            AVG(vsize_700) AS vsize_700,
+            AVG(vsize_800) AS vsize_800,
+            AVG(vsize_900) AS vsize_900,
+            AVG(vsize_1000) AS vsize_1000,
+            AVG(vsize_1200) AS vsize_1200,
+            AVG(vsize_1400) AS vsize_1400,
+            AVG(vsize_1600) AS vsize_1600,
+            AVG(vsize_1800) AS vsize_1800,
+            AVG(vsize_2000) AS vsize_2000 FROM statistics GROUP BY UNIX_TIMESTAMP(added) DIV ${groupBy} ORDER BY id DESC LIMIT ${days}`;
+  }
+
+  public async $get(id: number): Promise<IMempoolStats | undefined> {
+    try {
+      const connection = await DB.pool.getConnection();
+      const query = `SELECT * FROM statistics WHERE id = ?`;
+      const [rows] = await connection.query<any>(query, [id]);
+      connection.release();
+      return rows[0];
+    } catch (e) {
+      console.log('$list2H() error', e);
+    }
+  }
+
+  public async $list2H(): Promise<IMempoolStats[]> {
+    try {
+      const connection = await DB.pool.getConnection();
+      const query = `SELECT * FROM statistics ORDER BY id DESC LIMIT 120`;
+      const [rows] = await connection.query<any>(query);
+      connection.release();
+      return rows;
+    } catch (e) {
+      console.log('$list2H() error', e);
+      return [];
+    }
+  }
+
+  public async $list24H(): Promise<IMempoolStats[]> {
+    try {
+      const connection = await DB.pool.getConnection();
+      const query = this.getQueryForDays(120, 720);
+      const [rows] = await connection.query<any>(query);
+      connection.release();
+      return rows;
+    } catch (e) {
+      return [];
+    }
+  }
+
+  public async $list1W(): Promise<IMempoolStats[]> {
+    try {
+      const connection = await DB.pool.getConnection();
+      const query = this.getQueryForDays(120, 5040);
+      const [rows] = await connection.query<any>(query);
+      connection.release();
+      return rows;
+    } catch (e) {
+      console.log('$list1W() error', e);
+      return [];
+    }
+  }
+
+  public async $list1M(): Promise<IMempoolStats[]> {
+    try {
+      const connection = await DB.pool.getConnection();
+      const query = this.getQueryForDays(120, 20160);
+      const [rows] = await connection.query<any>(query);
+      connection.release();
+      return rows;
+    } catch (e) {
+      console.log('$list1M() error', e);
+      return [];
+    }
+  }
+
+  public async $list3M(): Promise<IMempoolStats[]> {
+    try {
+      const connection = await DB.pool.getConnection();
+      const query = this.getQueryForDays(120, 60480);
+      const [rows] = await connection.query<any>(query);
+      connection.release();
+      return rows;
+    } catch (e) {
+      console.log('$list3M() error', e);
+      return [];
+    }
+  }
+
+  public async $list6M(): Promise<IMempoolStats[]> {
+    try {
+      const connection = await DB.pool.getConnection();
+      const query = this.getQueryForDays(120, 120960);
+      const [rows] = await connection.query<any>(query);
+      connection.release();
+      return rows;
+    } catch (e) {
+      console.log('$list6M() error', e);
+      return [];
+    }
+  }
+
+}
+
+export default new Statistics();

backend/src/api/statistics/statistics-api.ts

@@ -1,441 +0,0 @@
-import DB from '../../database';
-import logger from '../../logger';
-import { Statistic, OptimizedStatistic } from '../../mempool.interfaces';
-
-class StatisticsApi {
-  protected queryTimeout = 120000;
-
-  public async $createZeroedStatistic(): Promise<number | undefined> {
-    try {
-      const query = `INSERT INTO statistics(
-              added,
-              unconfirmed_transactions,
-              tx_per_second,
-              vbytes_per_second,
-              mempool_byte_weight,
-              fee_data,
-              total_fee,
-              vsize_1,
-              vsize_2,
-              vsize_3,
-              vsize_4,
-              vsize_5,
-              vsize_6,
-              vsize_8,
-              vsize_10,
-              vsize_12,
-              vsize_15,
-              vsize_20,
-              vsize_30,
-              vsize_40,
-              vsize_50,
-              vsize_60,
-              vsize_70,
-              vsize_80,
-              vsize_90,
-              vsize_100,
-              vsize_125,
-              vsize_150,
-              vsize_175,
-              vsize_200,
-              vsize_250,
-              vsize_300,
-              vsize_350,
-              vsize_400,
-              vsize_500,
-              vsize_600,
-              vsize_700,
-              vsize_800,
-              vsize_900,
-              vsize_1000,
-              vsize_1200,
-              vsize_1400,
-              vsize_1600,
-              vsize_1800,
-              vsize_2000
-            )
-            VALUES (NOW(), 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-               0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0)`;
-      const [result]: any = await DB.query(query);
-      return result.insertId;
-    } catch (e) {
-      logger.err('$create() error' + (e instanceof Error ? e.message : e));
-    }
-  }
-
-  public async $create(statistics: Statistic): Promise<number | undefined> {
-    try {
-      const query = `INSERT INTO statistics(
-              added,
-              unconfirmed_transactions,
-              tx_per_second,
-              vbytes_per_second,
-              mempool_byte_weight,
-              fee_data,
-              total_fee,
-              vsize_1,
-              vsize_2,
-              vsize_3,
-              vsize_4,
-              vsize_5,
-              vsize_6,
-              vsize_8,
-              vsize_10,
-              vsize_12,
-              vsize_15,
-              vsize_20,
-              vsize_30,
-              vsize_40,
-              vsize_50,
-              vsize_60,
-              vsize_70,
-              vsize_80,
-              vsize_90,
-              vsize_100,
-              vsize_125,
-              vsize_150,
-              vsize_175,
-              vsize_200,
-              vsize_250,
-              vsize_300,
-              vsize_350,
-              vsize_400,
-              vsize_500,
-              vsize_600,
-              vsize_700,
-              vsize_800,
-              vsize_900,
-              vsize_1000,
-              vsize_1200,
-              vsize_1400,
-              vsize_1600,
-              vsize_1800,
-              vsize_2000
-            )
-            VALUES (${statistics.added}, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?,
-               ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`;
-
-      const params: (string | number)[] = [
-        statistics.unconfirmed_transactions,
-        statistics.tx_per_second,
-        statistics.vbytes_per_second,
-        statistics.mempool_byte_weight,
-        statistics.fee_data,
-        statistics.total_fee,
-        statistics.vsize_1,
-        statistics.vsize_2,
-        statistics.vsize_3,
-        statistics.vsize_4,
-        statistics.vsize_5,
-        statistics.vsize_6,
-        statistics.vsize_8,
-        statistics.vsize_10,
-        statistics.vsize_12,
-        statistics.vsize_15,
-        statistics.vsize_20,
-        statistics.vsize_30,
-        statistics.vsize_40,
-        statistics.vsize_50,
-        statistics.vsize_60,
-        statistics.vsize_70,
-        statistics.vsize_80,
-        statistics.vsize_90,
-        statistics.vsize_100,
-        statistics.vsize_125,
-        statistics.vsize_150,
-        statistics.vsize_175,
-        statistics.vsize_200,
-        statistics.vsize_250,
-        statistics.vsize_300,
-        statistics.vsize_350,
-        statistics.vsize_400,
-        statistics.vsize_500,
-        statistics.vsize_600,
-        statistics.vsize_700,
-        statistics.vsize_800,
-        statistics.vsize_900,
-        statistics.vsize_1000,
-        statistics.vsize_1200,
-        statistics.vsize_1400,
-        statistics.vsize_1600,
-        statistics.vsize_1800,
-        statistics.vsize_2000,
-      ];
-      const [result]: any = await DB.query(query, params);
-      return result.insertId;
-    } catch (e) {
-      logger.err('$create() error' + (e instanceof Error ? e.message : e));
-    }
-  }
-
-  private getQueryForDaysAvg(div: number, interval: string) {
-    return `SELECT
-      UNIX_TIMESTAMP(added) as added,
-      CAST(avg(vbytes_per_second) as DOUBLE) as vbytes_per_second,
-      CAST(avg(vsize_1) as DOUBLE) as vsize_1,
-      CAST(avg(vsize_2) as DOUBLE) as vsize_2,
-      CAST(avg(vsize_3) as DOUBLE) as vsize_3,
-      CAST(avg(vsize_4) as DOUBLE) as vsize_4,
-      CAST(avg(vsize_5) as DOUBLE) as vsize_5,
-      CAST(avg(vsize_6) as DOUBLE) as vsize_6,
-      CAST(avg(vsize_8) as DOUBLE) as vsize_8,
-      CAST(avg(vsize_10) as DOUBLE) as vsize_10,
-      CAST(avg(vsize_12) as DOUBLE) as vsize_12,
-      CAST(avg(vsize_15) as DOUBLE) as vsize_15,
-      CAST(avg(vsize_20) as DOUBLE) as vsize_20,
-      CAST(avg(vsize_30) as DOUBLE) as vsize_30,
-      CAST(avg(vsize_40) as DOUBLE) as vsize_40,
-      CAST(avg(vsize_50) as DOUBLE) as vsize_50,
-      CAST(avg(vsize_60) as DOUBLE) as vsize_60,
-      CAST(avg(vsize_70) as DOUBLE) as vsize_70,
-      CAST(avg(vsize_80) as DOUBLE) as vsize_80,
-      CAST(avg(vsize_90) as DOUBLE) as vsize_90,
-      CAST(avg(vsize_100) as DOUBLE) as vsize_100,
-      CAST(avg(vsize_125) as DOUBLE) as vsize_125,
-      CAST(avg(vsize_150) as DOUBLE) as vsize_150,
-      CAST(avg(vsize_175) as DOUBLE) as vsize_175,
-      CAST(avg(vsize_200) as DOUBLE) as vsize_200,
-      CAST(avg(vsize_250) as DOUBLE) as vsize_250,
-      CAST(avg(vsize_300) as DOUBLE) as vsize_300,
-      CAST(avg(vsize_350) as DOUBLE) as vsize_350,
-      CAST(avg(vsize_400) as DOUBLE) as vsize_400,
-      CAST(avg(vsize_500) as DOUBLE) as vsize_500,
-      CAST(avg(vsize_600) as DOUBLE) as vsize_600,
-      CAST(avg(vsize_700) as DOUBLE) as vsize_700,
-      CAST(avg(vsize_800) as DOUBLE) as vsize_800,
-      CAST(avg(vsize_900) as DOUBLE) as vsize_900,
-      CAST(avg(vsize_1000) as DOUBLE) as vsize_1000,
-      CAST(avg(vsize_1200) as DOUBLE) as vsize_1200,
-      CAST(avg(vsize_1400) as DOUBLE) as vsize_1400,
-      CAST(avg(vsize_1600) as DOUBLE) as vsize_1600,
-      CAST(avg(vsize_1800) as DOUBLE) as vsize_1800,
-      CAST(avg(vsize_2000) as DOUBLE) as vsize_2000 \
-      FROM statistics \
-      WHERE added BETWEEN DATE_SUB(NOW(), INTERVAL ${interval}) AND NOW() \
-      GROUP BY UNIX_TIMESTAMP(added) DIV ${div} \
-      ORDER BY statistics.added DESC;`;
-  }
-
-  private getQueryForDays(div: number, interval: string) {
-    return `SELECT
-      UNIX_TIMESTAMP(added) as added,
-      CAST(avg(vbytes_per_second) as DOUBLE) as vbytes_per_second,
-      vsize_1,
-      vsize_2,
-      vsize_3,
-      vsize_4,
-      vsize_5,
-      vsize_6,
-      vsize_8,
-      vsize_10,
-      vsize_12,
-      vsize_15,
-      vsize_20,
-      vsize_30,
-      vsize_40,
-      vsize_50,
-      vsize_60,
-      vsize_70,
-      vsize_80,
-      vsize_90,
-      vsize_100,
-      vsize_125,
-      vsize_150,
-      vsize_175,
-      vsize_200,
-      vsize_250,
-      vsize_300,
-      vsize_350,
-      vsize_400,
-      vsize_500,
-      vsize_600,
-      vsize_700,
-      vsize_800,
-      vsize_900,
-      vsize_1000,
-      vsize_1200,
-      vsize_1400,
-      vsize_1600,
-      vsize_1800,
-      vsize_2000 \
-      FROM statistics \
-      WHERE added BETWEEN DATE_SUB(NOW(), INTERVAL ${interval}) AND NOW() \
-      GROUP BY UNIX_TIMESTAMP(added) DIV ${div} \
-      ORDER BY statistics.added DESC;`;
-  }
-
-  public async $get(id: number): Promise<OptimizedStatistic | undefined> {
-    try {
-      const query = `SELECT *, UNIX_TIMESTAMP(added) as added FROM statistics WHERE id = ?`;
-      const [rows] = await DB.query(query, [id]);
-      if (rows[0]) {
-        return this.mapStatisticToOptimizedStatistic([rows[0]])[0];
-      }
-    } catch (e) {
-      logger.err('$list2H() error' + (e instanceof Error ? e.message : e));
-    }
-  }
-
-  public async $list2H(): Promise<OptimizedStatistic[]> {
-    try {
-      const query = `SELECT *, UNIX_TIMESTAMP(added) as added FROM statistics ORDER BY statistics.added DESC LIMIT 120`;
-      const [rows] = await DB.query({ sql: query, timeout: this.queryTimeout });
-      return this.mapStatisticToOptimizedStatistic(rows as Statistic[]);
-    } catch (e) {
-      logger.err('$list2H() error' + (e instanceof Error ? e.message : e));
-      return [];
-    }
-  }
-
-  public async $list24H(): Promise<OptimizedStatistic[]> {
-    try {
-      const query = `SELECT *, UNIX_TIMESTAMP(added) as added FROM statistics ORDER BY statistics.added DESC LIMIT 1440`;
-      const [rows] = await DB.query({ sql: query, timeout: this.queryTimeout });
-      return this.mapStatisticToOptimizedStatistic(rows as Statistic[]);
-    } catch (e) {
-      logger.err('$list24h() error' + (e instanceof Error ? e.message : e));
-      return [];
-    }
-  }
-
-  public async $list1W(): Promise<OptimizedStatistic[]> {
-    try {
-      const query = this.getQueryForDaysAvg(300, '1 WEEK'); // 5m interval
-      const [rows] = await DB.query({ sql: query, timeout: this.queryTimeout });
-      return this.mapStatisticToOptimizedStatistic(rows as Statistic[]);
-    } catch (e) {
-      logger.err('$list1W() error' + (e instanceof Error ? e.message : e));
-      return [];
-    }
-  }
-
-  public async $list1M(): Promise<OptimizedStatistic[]> {
-    try {
-      const query = this.getQueryForDaysAvg(1800, '1 MONTH'); // 30m interval
-      const [rows] = await DB.query({ sql: query, timeout: this.queryTimeout });
-      return this.mapStatisticToOptimizedStatistic(rows as Statistic[]);
-    } catch (e) {
-      logger.err('$list1M() error' + (e instanceof Error ? e.message : e));
-      return [];
-    }
-  }
-
-  public async $list3M(): Promise<OptimizedStatistic[]> {
-    try {
-      const query = this.getQueryForDaysAvg(7200, '3 MONTH'); // 2h interval
-      const [rows] = await DB.query({ sql: query, timeout: this.queryTimeout });
-      return this.mapStatisticToOptimizedStatistic(rows as Statistic[]);
-    } catch (e) {
-      logger.err('$list3M() error' + (e instanceof Error ? e.message : e));
-      return [];
-    }
-  }
-
-  public async $list6M(): Promise<OptimizedStatistic[]> {
-    try {
-      const query = this.getQueryForDaysAvg(10800, '6 MONTH'); // 3h interval
-      const [rows] = await DB.query({ sql: query, timeout: this.queryTimeout });
-      return this.mapStatisticToOptimizedStatistic(rows as Statistic[]);
-    } catch (e) {
-      logger.err('$list6M() error' + (e instanceof Error ? e.message : e));
-      return [];
-    }
-  }
-
-  public async $list1Y(): Promise<OptimizedStatistic[]> {
-    try {
-      const query = this.getQueryForDays(28800, '1 YEAR'); // 8h interval
-      const [rows] = await DB.query({ sql: query, timeout: this.queryTimeout });
-      return this.mapStatisticToOptimizedStatistic(rows as Statistic[]);
-    } catch (e) {
-      logger.err('$list1Y() error' + (e instanceof Error ? e.message : e));
-      return [];
-    }
-  }
-
-  public async $list2Y(): Promise<OptimizedStatistic[]> {
-    try {
-      const query = this.getQueryForDays(28800, '2 YEAR'); // 8h interval
-      const [rows] = await DB.query({ sql: query, timeout: this.queryTimeout });
-      return this.mapStatisticToOptimizedStatistic(rows as Statistic[]);
-    } catch (e) {
-      logger.err('$list2Y() error' + (e instanceof Error ? e.message : e));
-      return [];
-    }
-  }
-
-  public async $list3Y(): Promise<OptimizedStatistic[]> {
-    try {
-      const query = this.getQueryForDays(43200, '3 YEAR'); // 12h interval
-      const [rows] = await DB.query({ sql: query, timeout: this.queryTimeout });
-      return this.mapStatisticToOptimizedStatistic(rows as Statistic[]);
-    } catch (e) {
-      logger.err('$list3Y() error' + (e instanceof Error ? e.message : e));
-      return [];
-    }
-  }
-
-  public async $list4Y(): Promise<OptimizedStatistic[]> {
-    try {
-      const query = this.getQueryForDays(43200, '4 YEAR'); // 12h interval
-      const [rows] = await DB.query({ sql: query, timeout: this.queryTimeout });
-      return this.mapStatisticToOptimizedStatistic(rows as Statistic[]);
-    } catch (e) {
-      logger.err('$list4Y() error' + (e instanceof Error ? e.message : e));
-      return [];
-    }
-  }
-
-  private mapStatisticToOptimizedStatistic(statistic: Statistic[]): OptimizedStatistic[] {
-    return statistic.map((s) => {
-      return {
-        added: s.added,
-        vbytes_per_second: s.vbytes_per_second,
-        mempool_byte_weight: s.mempool_byte_weight,
-        total_fee: s.total_fee,
-        vsizes: [
-          s.vsize_1,
-          s.vsize_2,
-          s.vsize_3,
-          s.vsize_4,
-          s.vsize_5,
-          s.vsize_6,
-          s.vsize_8,
-          s.vsize_10,
-          s.vsize_12,
-          s.vsize_15,
-          s.vsize_20,
-          s.vsize_30,
-          s.vsize_40,
-          s.vsize_50,
-          s.vsize_60,
-          s.vsize_70,
-          s.vsize_80,
-          s.vsize_90,
-          s.vsize_100,
-          s.vsize_125,
-          s.vsize_150,
-          s.vsize_175,
-          s.vsize_200,
-          s.vsize_250,
-          s.vsize_300,
-          s.vsize_350,
-          s.vsize_400,
-          s.vsize_500,
-          s.vsize_600,
-          s.vsize_700,
-          s.vsize_800,
-          s.vsize_900,
-          s.vsize_1000,
-          s.vsize_1200,
-          s.vsize_1400,
-          s.vsize_1600,
-          s.vsize_1800,
-          s.vsize_2000,
-        ]
-      };
-    });
-  }
-}
-
-export default new StatisticsApi();

backend/src/api/statistics/statistics.routes.ts

@@ -1,71 +0,0 @@
-import { Application, Request, Response } from 'express';
-import config from '../../config';
-import statisticsApi from './statistics-api';
-
-class StatisticsRoutes {
-  public initRoutes(app: Application) {
-    app
-      .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/2h', this.$getStatisticsByTime.bind(this, '2h'))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/24h', this.$getStatisticsByTime.bind(this, '24h'))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/1w', this.$getStatisticsByTime.bind(this, '1w'))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/1m', this.$getStatisticsByTime.bind(this, '1m'))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/3m', this.$getStatisticsByTime.bind(this, '3m'))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/6m', this.$getStatisticsByTime.bind(this, '6m'))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/1y', this.$getStatisticsByTime.bind(this, '1y'))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/2y', this.$getStatisticsByTime.bind(this, '2y'))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/3y', this.$getStatisticsByTime.bind(this, '3y'))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'statistics/4y', this.$getStatisticsByTime.bind(this, '4y'))
-    ;
-  }
-
-  private async $getStatisticsByTime(time: '2h' | '24h' | '1w' | '1m' | '3m' | '6m' | '1y' | '2y' | '3y' | '4y', req: Request, res: Response) {
-    res.header('Pragma', 'public');
-    res.header('Cache-control', 'public');
-    res.setHeader('Expires', new Date(Date.now() + 1000 * 300).toUTCString());
-
-    try {
-      let result;
-      switch (time as string) {
-        case '2h':
-          result = await statisticsApi.$list2H();
-          res.setHeader('Expires', new Date(Date.now() + 1000 * 30).toUTCString());
-          break;
-        case '24h':
-          result = await statisticsApi.$list24H();
-          res.setHeader('Expires', new Date(Date.now() + 1000 * 60).toUTCString());
-          break;
-        case '1w':
-          result = await statisticsApi.$list1W();
-          break;
-        case '1m':
-          result = await statisticsApi.$list1M();
-          break;
-        case '3m':
-          result = await statisticsApi.$list3M();
-          break;
-        case '6m':
-          result = await statisticsApi.$list6M();
-          break;
-        case '1y':
-          result = await statisticsApi.$list1Y();
-          break;
-        case '2y':
-          result = await statisticsApi.$list2Y();
-          break;
-        case '3y':
-          result = await statisticsApi.$list3Y();
-          break;
-        case '4y':
-          result = await statisticsApi.$list4Y();
-          break;
-        default:
-          result = await statisticsApi.$list2H();
-      }
-      res.json(result);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-}
-
-export default new StatisticsRoutes();

backend/src/api/statistics/statistics.ts

@@ -1,153 +0,0 @@
-import memPool from '../mempool';
-import logger from '../../logger';
-import { TransactionExtended, OptimizedStatistic } from '../../mempool.interfaces';
-import { Common } from '../common';
-import statisticsApi from './statistics-api';
-
-class Statistics {
-  protected intervalTimer: NodeJS.Timer | undefined;
-  protected newStatisticsEntryCallback: ((stats: OptimizedStatistic) => void) | undefined;
-
-  public setNewStatisticsEntryCallback(fn: (stats: OptimizedStatistic) => void) {
-    this.newStatisticsEntryCallback = fn;
-  }
-
-  public startStatistics(): void {
-    logger.info('Starting statistics service');
-
-    const now = new Date();
-    const nextInterval = new Date(now.getFullYear(), now.getMonth(), now.getDate(), now.getHours(),
-      Math.floor(now.getMinutes() / 1) * 1 + 1, 0, 0);
-    const difference = nextInterval.getTime() - now.getTime();
-
-    setTimeout(() => {
-      this.runStatistics();
-      this.intervalTimer = setInterval(() => {
-        this.runStatistics();
-      }, 1 * 60 * 1000);
-    }, difference);
-  }
-
-  private async runStatistics(): Promise<void> {
-    if (!memPool.isInSync()) {
-      return;
-    }
-    const currentMempool = memPool.getMempool();
-    const txPerSecond = memPool.getTxPerSecond();
-    const vBytesPerSecond = memPool.getVBytesPerSecond();
-
-    logger.debug('Running statistics');
-
-    let memPoolArray: TransactionExtended[] = [];
-    for (const i in currentMempool) {
-      if (currentMempool.hasOwnProperty(i)) {
-        memPoolArray.push(currentMempool[i]);
-      }
-    }
-    // Remove 0 and undefined
-    memPoolArray = memPoolArray.filter((tx) => tx.effectiveFeePerVsize);
-
-    if (!memPoolArray.length) {
-      try {
-        const insertIdZeroed = await statisticsApi.$createZeroedStatistic();
-        if (this.newStatisticsEntryCallback && insertIdZeroed) {
-          const newStats = await statisticsApi.$get(insertIdZeroed);
-          if (newStats) {
-            this.newStatisticsEntryCallback(newStats);
-          }
-        }
-      } catch (e) {
-        logger.err('Unable to insert zeroed statistics. ' + e);
-      }
-      return;
-    }
-
-    memPoolArray.sort((a, b) => a.effectiveFeePerVsize - b.effectiveFeePerVsize);
-    const totalWeight = memPoolArray.map((tx) => tx.vsize).reduce((acc, curr) => acc + curr) * 4;
-    const totalFee = memPoolArray.map((tx) => tx.fee).reduce((acc, curr) => acc + curr);
-
-    const logFees = [1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 30, 40, 50, 60, 70, 80, 90, 100, 125, 150, 175, 200,
-      250, 300, 350, 400, 500, 600, 700, 800, 900, 1000, 1200, 1400, 1600, 1800, 2000];
-
-    const weightVsizeFees: { [feePerWU: number]: number } = {};
-    const lastItem = logFees.length - 1;
-
-    memPoolArray.forEach((transaction) => {
-      for (let i = 0; i < logFees.length; i++) {
-        if (
-          (Common.isLiquid() && (i === lastItem || transaction.effectiveFeePerVsize * 10 < logFees[i + 1]))
-          ||
-          (!Common.isLiquid() && (i === lastItem || transaction.effectiveFeePerVsize < logFees[i + 1]))
-        ) {
-          if (weightVsizeFees[logFees[i]]) {
-            weightVsizeFees[logFees[i]] += transaction.vsize;
-          } else {
-            weightVsizeFees[logFees[i]] = transaction.vsize;
-          }
-          break;
-        }
-      }
-    });
-
-    try {
-      const insertId = await statisticsApi.$create({
-        added: 'NOW()',
-        unconfirmed_transactions: memPoolArray.length,
-        tx_per_second: txPerSecond,
-        vbytes_per_second: Math.round(vBytesPerSecond),
-        mempool_byte_weight: totalWeight,
-        total_fee: totalFee,
-        fee_data: '',
-        vsize_1: weightVsizeFees['1'] || 0,
-        vsize_2: weightVsizeFees['2'] || 0,
-        vsize_3: weightVsizeFees['3'] || 0,
-        vsize_4: weightVsizeFees['4'] || 0,
-        vsize_5: weightVsizeFees['5'] || 0,
-        vsize_6: weightVsizeFees['6'] || 0,
-        vsize_8: weightVsizeFees['8'] || 0,
-        vsize_10: weightVsizeFees['10'] || 0,
-        vsize_12: weightVsizeFees['12'] || 0,
-        vsize_15: weightVsizeFees['15'] || 0,
-        vsize_20: weightVsizeFees['20'] || 0,
-        vsize_30: weightVsizeFees['30'] || 0,
-        vsize_40: weightVsizeFees['40'] || 0,
-        vsize_50: weightVsizeFees['50'] || 0,
-        vsize_60: weightVsizeFees['60'] || 0,
-        vsize_70: weightVsizeFees['70'] || 0,
-        vsize_80: weightVsizeFees['80'] || 0,
-        vsize_90: weightVsizeFees['90'] || 0,
-        vsize_100: weightVsizeFees['100'] || 0,
-        vsize_125: weightVsizeFees['125'] || 0,
-        vsize_150: weightVsizeFees['150'] || 0,
-        vsize_175: weightVsizeFees['175'] || 0,
-        vsize_200: weightVsizeFees['200'] || 0,
-        vsize_250: weightVsizeFees['250'] || 0,
-        vsize_300: weightVsizeFees['300'] || 0,
-        vsize_350: weightVsizeFees['350'] || 0,
-        vsize_400: weightVsizeFees['400'] || 0,
-        vsize_500: weightVsizeFees['500'] || 0,
-        vsize_600: weightVsizeFees['600'] || 0,
-        vsize_700: weightVsizeFees['700'] || 0,
-        vsize_800: weightVsizeFees['800'] || 0,
-        vsize_900: weightVsizeFees['900'] || 0,
-        vsize_1000: weightVsizeFees['1000'] || 0,
-        vsize_1200: weightVsizeFees['1200'] || 0,
-        vsize_1400: weightVsizeFees['1400'] || 0,
-        vsize_1600: weightVsizeFees['1600'] || 0,
-        vsize_1800: weightVsizeFees['1800'] || 0,
-        vsize_2000: weightVsizeFees['2000'] || 0,
-      });
-
-      if (this.newStatisticsEntryCallback && insertId) {
-        const newStats = await statisticsApi.$get(insertId);
-        if (newStats) {
-          this.newStatisticsEntryCallback(newStats);
-        }
-      }
-    } catch (e) {
-      logger.err('Unable to insert statistics. ' + e);
-    }
-  }
-}
-
-export default new Statistics();

backend/src/api/transaction-utils.ts

@@ -1,68 +0,0 @@
-import { TransactionExtended, TransactionMinerInfo } from '../mempool.interfaces';
-import { IEsploraApi } from './bitcoin/esplora-api.interface';
-import { Common } from './common';
-import bitcoinApi, { bitcoinCoreApi } from './bitcoin/bitcoin-api-factory';
-
-class TransactionUtils {
-  constructor() { }
-
-  public stripCoinbaseTransaction(tx: TransactionExtended): TransactionMinerInfo {
-    return {
-      vin: [{
-        scriptsig: tx.vin[0].scriptsig || tx.vin[0]['coinbase']
-      }],
-      vout: tx.vout
-        .map((vout) => ({
-          scriptpubkey_address: vout.scriptpubkey_address,
-          scriptpubkey_asm: vout.scriptpubkey_asm,
-          value: vout.value
-        }))
-        .filter((vout) => vout.value)
-    };
-  }
-
-  /**
-   * @param txId 
-   * @param addPrevouts 
-   * @param lazyPrevouts 
-   * @param forceCore - See https://github.com/mempool/mempool/issues/2904
-   */
-  public async $getTransactionExtended(txId: string, addPrevouts = false, lazyPrevouts = false, forceCore = false): Promise<TransactionExtended> {
-    let transaction: IEsploraApi.Transaction;
-    if (forceCore === true) {
-      transaction  = await bitcoinCoreApi.$getRawTransaction(txId, true);
-    } else {
-      transaction  = await bitcoinApi.$getRawTransaction(txId, false, addPrevouts, lazyPrevouts);
-    }
-    return this.extendTransaction(transaction);
-  }
-
-  private extendTransaction(transaction: IEsploraApi.Transaction): TransactionExtended {
-    // @ts-ignore
-    if (transaction.vsize) {
-      // @ts-ignore
-      return transaction;
-    }
-    const feePerVbytes = Math.max(Common.isLiquid() ? 0.1 : 1,
-      (transaction.fee || 0) / (transaction.weight / 4));
-    const transactionExtended: TransactionExtended = Object.assign({
-      vsize: Math.round(transaction.weight / 4),
-      feePerVsize: feePerVbytes,
-      effectiveFeePerVsize: feePerVbytes,
-    }, transaction);
-    if (!transaction.status.confirmed) {
-      transactionExtended.firstSeen = Math.round((new Date().getTime() / 1000));
-    }
-    return transactionExtended;
-  }
-
-  public hex2ascii(hex: string) {
-    let str = '';
-    for (let i = 0; i < hex.length; i += 2) {
-      str += String.fromCharCode(parseInt(hex.substr(i, 2), 16));
-    }
-    return str;
-  }
-}
-
-export default new TransactionUtils();

backend/src/api/tx-selection-worker.ts

@@ -1,294 +0,0 @@
-import config from '../config';
-import logger from '../logger';
-import { ThreadTransaction, MempoolBlockWithTransactions, AuditTransaction } from '../mempool.interfaces';
-import { PairingHeap } from '../utils/pairing-heap';
-import { Common } from './common';
-import { parentPort } from 'worker_threads';
-
-let mempool: { [txid: string]: ThreadTransaction } = {};
-
-if (parentPort) {
-  parentPort.on('message', (params) => {
-    if (params.type === 'set') {
-      mempool = params.mempool;
-    } else if (params.type === 'update') {
-      params.added.forEach(tx => {
-        mempool[tx.txid] = tx;
-      });
-      params.removed.forEach(txid => {
-        delete mempool[txid];
-      });
-    }
-    
-    const { blocks, clusters } = makeBlockTemplates(mempool);
-
-    // return the result to main thread.
-    if (parentPort) {
-     parentPort.postMessage({ blocks, clusters });
-    }
-  });
-}
-
-/*
-* Build projected mempool blocks using an approximation of the transaction selection algorithm from Bitcoin Core
-* (see BlockAssembler in https://github.com/bitcoin/bitcoin/blob/master/src/node/miner.cpp)
-*/
-function makeBlockTemplates(mempool: { [txid: string]: ThreadTransaction })
-  : { blocks: ThreadTransaction[][], clusters: { [root: string]: string[] } } {
-  const start = Date.now();
-  const auditPool: { [txid: string]: AuditTransaction } = {};
-  const mempoolArray: AuditTransaction[] = [];
-  const restOfArray: ThreadTransaction[] = [];
-  const cpfpClusters: { [root: string]: string[] } = {};
-  
-  // grab the top feerate txs up to maxWeight
-  Object.values(mempool).sort((a, b) => b.feePerVsize - a.feePerVsize).forEach(tx => {
-    // initializing everything up front helps V8 optimize property access later
-    auditPool[tx.txid] = {
-      txid: tx.txid,
-      fee: tx.fee,
-      weight: tx.weight,
-      feePerVsize: tx.feePerVsize,
-      effectiveFeePerVsize: tx.feePerVsize,
-      vin: tx.vin,
-      relativesSet: false,
-      ancestorMap: new Map<string, AuditTransaction>(),
-      children: new Set<AuditTransaction>(),
-      ancestorFee: 0,
-      ancestorWeight: 0,
-      score: 0,
-      used: false,
-      modified: false,
-      modifiedNode: null,
-    };
-    mempoolArray.push(auditPool[tx.txid]);
-  });
-
-  // Build relatives graph & calculate ancestor scores
-  for (const tx of mempoolArray) {
-    if (!tx.relativesSet) {
-      setRelatives(tx, auditPool);
-    }
-  }
-
-  // Sort by descending ancestor score
-  mempoolArray.sort((a, b) => (b.score || 0) - (a.score || 0));
-
-  // Build blocks by greedily choosing the highest feerate package
-  // (i.e. the package rooted in the transaction with the best ancestor score)
-  const blocks: ThreadTransaction[][] = [];
-  let blockWeight = 4000;
-  let blockSize = 0;
-  let transactions: AuditTransaction[] = [];
-  const modified: PairingHeap<AuditTransaction> = new PairingHeap((a, b): boolean => (a.score || 0) > (b.score || 0));
-  let overflow: AuditTransaction[] = [];
-  let failures = 0;
-  let top = 0;
-  while ((top < mempoolArray.length || !modified.isEmpty())) {
-    // skip invalid transactions
-    while (top < mempoolArray.length && (mempoolArray[top].used || mempoolArray[top].modified)) {
-      top++;
-    }
-
-    // Select best next package
-    let nextTx;
-    const nextPoolTx = mempoolArray[top];
-    const nextModifiedTx = modified.peek();
-    if (nextPoolTx && (!nextModifiedTx || (nextPoolTx.score || 0) > (nextModifiedTx.score || 0))) {
-      nextTx = nextPoolTx;
-      top++;
-    } else {
-      modified.pop();
-      if (nextModifiedTx) {
-        nextTx = nextModifiedTx;
-        nextTx.modifiedNode = undefined;
-      }
-    }
-
-    if (nextTx && !nextTx?.used) {
-      // Check if the package fits into this block
-      if (blockWeight + nextTx.ancestorWeight < config.MEMPOOL.BLOCK_WEIGHT_UNITS) {
-        const ancestors: AuditTransaction[] = Array.from(nextTx.ancestorMap.values());
-        // sort ancestors by dependency graph (equivalent to sorting by ascending ancestor count)
-        const sortedTxSet = [...ancestors.sort((a, b) => { return (a.ancestorMap.size || 0) - (b.ancestorMap.size || 0); }), nextTx];
-        let isCluster = false;
-        if (sortedTxSet.length > 1) {
-          cpfpClusters[nextTx.txid] = sortedTxSet.map(tx => tx.txid);
-          isCluster = true;
-        }
-        const effectiveFeeRate = nextTx.ancestorFee / (nextTx.ancestorWeight / 4);
-        const used: AuditTransaction[] = [];
-        while (sortedTxSet.length) {
-          const ancestor = sortedTxSet.pop();
-          const mempoolTx = mempool[ancestor.txid];
-          ancestor.used = true;
-          ancestor.usedBy = nextTx.txid;
-          // update original copy of this tx with effective fee rate & relatives data
-          mempoolTx.effectiveFeePerVsize = effectiveFeeRate;
-          if (isCluster) {
-            mempoolTx.cpfpRoot = nextTx.txid;
-          }
-          mempoolTx.cpfpChecked = true;
-          transactions.push(ancestor);
-          blockSize += ancestor.size;
-          blockWeight += ancestor.weight;
-          used.push(ancestor);
-        }
-
-        // remove these as valid package ancestors for any descendants remaining in the mempool
-        if (used.length) {
-          used.forEach(tx => {
-            updateDescendants(tx, auditPool, modified);
-          });
-        }
-
-        failures = 0;
-      } else {
-        // hold this package in an overflow list while we check for smaller options
-        overflow.push(nextTx);
-        failures++;
-      }
-    }
-
-    // this block is full
-    const exceededPackageTries = failures > 1000 && blockWeight > (config.MEMPOOL.BLOCK_WEIGHT_UNITS - 4000);
-    const queueEmpty = top >= mempoolArray.length && modified.isEmpty();
-    if ((exceededPackageTries || queueEmpty) && blocks.length < 7) {
-      // construct this block
-      if (transactions.length) {
-        blocks.push(transactions.map(t => mempool[t.txid]));
-      }
-      // reset for the next block
-      transactions = [];
-      blockSize = 0;
-      blockWeight = 4000;
-
-      // 'overflow' packages didn't fit in this block, but are valid candidates for the next
-      for (const overflowTx of overflow.reverse()) {
-        if (overflowTx.modified) {
-          overflowTx.modifiedNode = modified.add(overflowTx);
-        } else {
-          top--;
-          mempoolArray[top] = overflowTx;
-        }
-      }
-      overflow = [];
-    }
-  }
-  // pack any leftover transactions into the last block
-  for (const tx of overflow) {
-    if (!tx || tx?.used) {
-      continue;
-    }
-    blockWeight += tx.weight;
-    const mempoolTx = mempool[tx.txid];
-    // update original copy of this tx with effective fee rate & relatives data
-    mempoolTx.effectiveFeePerVsize = tx.score;
-    if (tx.ancestorMap.size > 0) {
-      cpfpClusters[tx.txid] = Array.from(tx.ancestorMap?.values()).map(a => a.txid);
-      mempoolTx.cpfpRoot = tx.txid;
-    }
-    mempoolTx.cpfpChecked = true;
-    transactions.push(tx);
-    tx.used = true;
-  }
-  const blockTransactions = transactions.map(t => mempool[t.txid]);
-  restOfArray.forEach(tx => {
-    blockWeight += tx.weight;
-    tx.effectiveFeePerVsize = tx.feePerVsize;
-    tx.cpfpChecked = false;
-    blockTransactions.push(tx);
-  });
-  if (blockTransactions.length) {
-    blocks.push(blockTransactions);
-  }
-  transactions = [];
-
-  const end = Date.now();
-  const time = end - start;
-  logger.debug('Mempool templates calculated in ' + time / 1000 + ' seconds');
-
-  return { blocks, clusters: cpfpClusters };
-}
-
-// traverse in-mempool ancestors
-// recursion unavoidable, but should be limited to depth < 25 by mempool policy
-function setRelatives(
-  tx: AuditTransaction,
-  mempool: { [txid: string]: AuditTransaction },
-): void {
-  for (const parent of tx.vin) {
-    const parentTx = mempool[parent];
-    if (parentTx && !tx.ancestorMap?.has(parent)) {
-      tx.ancestorMap.set(parent, parentTx);
-      parentTx.children.add(tx);
-      // visit each node only once
-      if (!parentTx.relativesSet) {
-        setRelatives(parentTx, mempool);
-      }
-      parentTx.ancestorMap.forEach((ancestor) => {
-        tx.ancestorMap.set(ancestor.txid, ancestor);
-      });
-    }
-  };
-  tx.ancestorFee = tx.fee || 0;
-  tx.ancestorWeight = tx.weight || 0;
-  tx.ancestorMap.forEach((ancestor) => {
-    tx.ancestorFee += ancestor.fee;
-    tx.ancestorWeight += ancestor.weight;
-  });
-  tx.score = tx.ancestorFee / ((tx.ancestorWeight / 4) || 1);
-  tx.relativesSet = true;
-}
-
-// iterate over remaining descendants, removing the root as a valid ancestor & updating the ancestor score
-// avoids recursion to limit call stack depth
-function updateDescendants(
-  rootTx: AuditTransaction,
-  mempool: { [txid: string]: AuditTransaction },
-  modified: PairingHeap<AuditTransaction>,
-): void {
-  const descendantSet: Set<AuditTransaction> = new Set();
-  // stack of nodes left to visit
-  const descendants: AuditTransaction[] = [];
-  let descendantTx;
-  let tmpScore;
-  rootTx.children.forEach(childTx => {
-    if (!descendantSet.has(childTx)) {
-      descendants.push(childTx);
-      descendantSet.add(childTx);
-    }
-  });
-  while (descendants.length) {
-    descendantTx = descendants.pop();
-    if (descendantTx && descendantTx.ancestorMap && descendantTx.ancestorMap.has(rootTx.txid)) {
-      // remove tx as ancestor
-      descendantTx.ancestorMap.delete(rootTx.txid);
-      descendantTx.ancestorFee -= rootTx.fee;
-      descendantTx.ancestorWeight -= rootTx.weight;
-      tmpScore = descendantTx.score;
-      descendantTx.score = descendantTx.ancestorFee / (descendantTx.ancestorWeight / 4);
-
-      if (!descendantTx.modifiedNode) {
-        descendantTx.modified = true;
-        descendantTx.modifiedNode = modified.add(descendantTx);
-      } else {
-        // rebalance modified heap if score has changed
-        if (descendantTx.score < tmpScore) {
-          modified.decreasePriority(descendantTx.modifiedNode);
-        } else if (descendantTx.score > tmpScore) {
-          modified.increasePriority(descendantTx.modifiedNode);
-        }
-      }
-
-      // add this node's children to the stack
-      descendantTx.children.forEach(childTx => {
-        // visit each node only once
-        if (!descendantSet.has(childTx)) {
-          descendants.push(childTx);
-          descendantSet.add(childTx);
-        }
-      });
-    }
-  }
-}

backend/src/api/websocket-handler.ts

@@ -1,599 +0,0 @@
-import logger from '../logger';
-import * as WebSocket from 'ws';
-import {
-  BlockExtended, TransactionExtended, WebsocketResponse,
-  OptimizedStatistic, ILoadingIndicators
-} from '../mempool.interfaces';
-import blocks from './blocks';
-import memPool from './mempool';
-import backendInfo from './backend-info';
-import mempoolBlocks from './mempool-blocks';
-import { Common } from './common';
-import loadingIndicators from './loading-indicators';
-import config from '../config';
-import transactionUtils from './transaction-utils';
-import rbfCache from './rbf-cache';
-import difficultyAdjustment from './difficulty-adjustment';
-import feeApi from './fee-api';
-import BlocksAuditsRepository from '../repositories/BlocksAuditsRepository';
-import BlocksSummariesRepository from '../repositories/BlocksSummariesRepository';
-import Audit from './audit';
-import { deepClone } from '../utils/clone';
-import priceUpdater from '../tasks/price-updater';
-import { ApiPrice } from '../repositories/PricesRepository';
-
-class WebsocketHandler {
-  private wss: WebSocket.Server | undefined;
-  private extraInitProperties = {};
-
-  constructor() { }
-
-  setWebsocketServer(wss: WebSocket.Server) {
-    this.wss = wss;
-  }
-
-  setExtraInitProperties(property: string, value: any) {
-    this.extraInitProperties[property] = value;
-  }
-
-  setupConnectionHandling() {
-    if (!this.wss) {
-      throw new Error('WebSocket.Server is not set');
-    }
-
-    this.wss.on('connection', (client: WebSocket) => {
-      client.on('error', logger.info);
-      client.on('message', async (message: string) => {
-        try {
-          const parsedMessage: WebsocketResponse = JSON.parse(message);
-          const response = {};
-
-          if (parsedMessage.action === 'want') {
-            client['want-blocks'] = parsedMessage.data.indexOf('blocks') > -1;
-            client['want-mempool-blocks'] = parsedMessage.data.indexOf('mempool-blocks') > -1;
-            client['want-live-2h-chart'] = parsedMessage.data.indexOf('live-2h-chart') > -1;
-            client['want-stats'] = parsedMessage.data.indexOf('stats') > -1;
-          }
-
-          if (parsedMessage && parsedMessage['track-tx']) {
-            if (/^[a-fA-F0-9]{64}$/.test(parsedMessage['track-tx'])) {
-              client['track-tx'] = parsedMessage['track-tx'];
-              // Client is telling the transaction wasn't found
-              if (parsedMessage['watch-mempool']) {
-                const rbfCacheTxid = rbfCache.getReplacedBy(client['track-tx']);
-                if (rbfCacheTxid) {
-                  response['txReplaced'] = {
-                    txid: rbfCacheTxid,
-                  };
-                  client['track-tx'] = null;
-                } else {
-                  // It might have appeared before we had the time to start watching for it
-                  const tx = memPool.getMempool()[client['track-tx']];
-                  if (tx) {
-                    if (config.MEMPOOL.BACKEND === 'esplora') {
-                      response['tx'] = tx;
-                    } else {
-                      // tx.prevout is missing from transactions when in bitcoind mode
-                      try {
-                        const fullTx = await transactionUtils.$getTransactionExtended(tx.txid, true);
-                        response['tx'] = fullTx;
-                      } catch (e) {
-                        logger.debug('Error finding transaction: ' + (e instanceof Error ? e.message : e));
-                      }
-                    }
-                  } else {
-                    try {
-                      const fullTx = await transactionUtils.$getTransactionExtended(client['track-tx'], true);
-                      response['tx'] = fullTx;
-                    } catch (e) {
-                      logger.debug('Error finding transaction. ' + (e instanceof Error ? e.message : e));
-                      client['track-mempool-tx'] = parsedMessage['track-tx'];
-                    }
-                  }
-                }
-              }
-            } else {
-              client['track-tx'] = null;
-            }
-          }
-
-          if (parsedMessage && parsedMessage['track-address']) {
-            if (/^([a-km-zA-HJ-NP-Z1-9]{26,35}|[a-km-zA-HJ-NP-Z1-9]{80}|[a-z]{2,5}1[ac-hj-np-z02-9]{8,100}|[A-Z]{2,5}1[AC-HJ-NP-Z02-9]{8,100})$/
-              .test(parsedMessage['track-address'])) {
-              let matchedAddress = parsedMessage['track-address'];
-              if (/^[A-Z]{2,5}1[AC-HJ-NP-Z02-9]{8,100}$/.test(parsedMessage['track-address'])) {
-                matchedAddress = matchedAddress.toLowerCase();
-              }
-              client['track-address'] = matchedAddress;
-            } else {
-              client['track-address'] = null;
-            }
-          }
-
-          if (parsedMessage && parsedMessage['track-asset']) {
-            if (/^[a-fA-F0-9]{64}$/.test(parsedMessage['track-asset'])) {
-              client['track-asset'] = parsedMessage['track-asset'];
-            } else {
-              client['track-asset'] = null;
-            }
-          }
-
-          if (parsedMessage && parsedMessage['track-mempool-block'] !== undefined) {
-            if (Number.isInteger(parsedMessage['track-mempool-block']) && parsedMessage['track-mempool-block'] >= 0) {
-              const index = parsedMessage['track-mempool-block'];
-              client['track-mempool-block'] = index;
-              const mBlocksWithTransactions = mempoolBlocks.getMempoolBlocksWithTransactions();
-              response['projected-block-transactions'] = {
-                index: index,
-                blockTransactions: mBlocksWithTransactions[index]?.transactions || [],
-              };
-            } else {
-              client['track-mempool-block'] = null;
-            }
-          }
-
-          if (parsedMessage.action === 'init') {
-            const _blocks = blocks.getBlocks().slice(-config.MEMPOOL.INITIAL_BLOCKS_AMOUNT);
-            if (!_blocks) {
-              return;
-            }
-            client.send(JSON.stringify(this.getInitData(_blocks)));
-          }
-
-          if (parsedMessage.action === 'ping') {
-            response['pong'] = true;
-          }
-
-          if (parsedMessage['track-donation'] && parsedMessage['track-donation'].length === 22) {
-            client['track-donation'] = parsedMessage['track-donation'];
-          }
-
-          if (parsedMessage['track-bisq-market']) {
-            if (/^[a-z]{3}_[a-z]{3}$/.test(parsedMessage['track-bisq-market'])) {
-              client['track-bisq-market'] = parsedMessage['track-bisq-market'];
-            } else {
-              client['track-bisq-market'] = null;
-            }
-          }
-
-          if (Object.keys(response).length) {
-            client.send(JSON.stringify(response));
-          }
-        } catch (e) {
-          logger.debug('Error parsing websocket message: ' + (e instanceof Error ? e.message : e));
-        }
-      });
-    });
-  }
-
-  handleNewDonation(id: string) {
-    if (!this.wss) {
-      throw new Error('WebSocket.Server is not set');
-    }
-
-    this.wss.clients.forEach((client) => {
-      if (client.readyState !== WebSocket.OPEN) {
-        return;
-      }
-      if (client['track-donation'] === id) {
-        client.send(JSON.stringify({ donationConfirmed: true }));
-      }
-    });
-  }
-
-  handleLoadingChanged(indicators: ILoadingIndicators) {
-    if (!this.wss) {
-      throw new Error('WebSocket.Server is not set');
-    }
-
-    this.wss.clients.forEach((client) => {
-      if (client.readyState !== WebSocket.OPEN) {
-        return;
-      }
-      client.send(JSON.stringify({ loadingIndicators: indicators }));
-    });
-  }
-
-  handleNewConversionRates(conversionRates: ApiPrice) {
-    if (!this.wss) {
-      throw new Error('WebSocket.Server is not set');
-    }
-
-    this.wss.clients.forEach((client) => {
-      if (client.readyState !== WebSocket.OPEN) {
-        return;
-      }
-      client.send(JSON.stringify({ conversions: conversionRates }));
-    });
-  }
-
-  getInitData(_blocks?: BlockExtended[]) {
-    if (!_blocks) {
-      _blocks = blocks.getBlocks().slice(-config.MEMPOOL.INITIAL_BLOCKS_AMOUNT);
-    }
-    return {
-      'mempoolInfo': memPool.getMempoolInfo(),
-      'vBytesPerSecond': memPool.getVBytesPerSecond(),
-      'blocks': _blocks,
-      'conversions': priceUpdater.getLatestPrices(),
-      'mempool-blocks': mempoolBlocks.getMempoolBlocks(),
-      'transactions': memPool.getLatestTransactions(),
-      'backendInfo': backendInfo.getBackendInfo(),
-      'loadingIndicators': loadingIndicators.getLoadingIndicators(),
-      'da': difficultyAdjustment.getDifficultyAdjustment(),
-      'fees': feeApi.getRecommendedFee(),
-      ...this.extraInitProperties
-    };
-  }
-
-  handleNewStatistic(stats: OptimizedStatistic) {
-    if (!this.wss) {
-      throw new Error('WebSocket.Server is not set');
-    }
-
-    this.wss.clients.forEach((client) => {
-      if (client.readyState !== WebSocket.OPEN) {
-        return;
-      }
-
-      if (!client['want-live-2h-chart']) {
-        return;
-      }
-
-      client.send(JSON.stringify({
-        'live-2h-chart': stats
-      }));
-    });
-  }
-
-  async handleMempoolChange(newMempool: { [txid: string]: TransactionExtended },
-    newTransactions: TransactionExtended[], deletedTransactions: TransactionExtended[]): Promise<void> {
-    if (!this.wss) {
-      throw new Error('WebSocket.Server is not set');
-    }
-
-    if (config.MEMPOOL.ADVANCED_GBT_MEMPOOL) {
-      await mempoolBlocks.updateBlockTemplates(newMempool, newTransactions, deletedTransactions.map(tx => tx.txid), true);
-    } else {
-      mempoolBlocks.updateMempoolBlocks(newMempool, true);
-    }
-
-    const mBlocks = mempoolBlocks.getMempoolBlocks();
-    const mBlockDeltas = mempoolBlocks.getMempoolBlockDeltas();
-    const mempoolInfo = memPool.getMempoolInfo();
-    const vBytesPerSecond = memPool.getVBytesPerSecond();
-    const rbfTransactions = Common.findRbfTransactions(newTransactions, deletedTransactions);
-    const da = difficultyAdjustment.getDifficultyAdjustment();
-    memPool.handleRbfTransactions(rbfTransactions);
-    const recommendedFees = feeApi.getRecommendedFee();
-
-    this.wss.clients.forEach(async (client) => {
-      if (client.readyState !== WebSocket.OPEN) {
-        return;
-      }
-
-      const response = {};
-
-      if (client['want-stats']) {
-        response['mempoolInfo'] = mempoolInfo;
-        response['vBytesPerSecond'] = vBytesPerSecond;
-        response['transactions'] = newTransactions.slice(0, 6).map((tx) => Common.stripTransaction(tx));
-        response['da'] = da;
-        response['fees'] = recommendedFees;
-      }
-
-      if (client['want-mempool-blocks']) {
-        response['mempool-blocks'] = mBlocks;
-      }
-
-      if (client['track-mempool-tx']) {
-        const tx = newTransactions.find((t) => t.txid === client['track-mempool-tx']);
-        if (tx) {
-          if (config.MEMPOOL.BACKEND !== 'esplora') {
-            try {
-              const fullTx = await transactionUtils.$getTransactionExtended(tx.txid, true);
-              response['tx'] = fullTx;
-            } catch (e) {
-              logger.debug('Error finding transaction in mempool: ' + (e instanceof Error ? e.message : e));
-            }
-          } else {
-            response['tx'] = tx;
-          }
-          client['track-mempool-tx'] = null;
-        }
-      }
-
-      if (client['track-address']) {
-        const foundTransactions: TransactionExtended[] = [];
-
-        for (const tx of newTransactions) {
-          const someVin = tx.vin.some((vin) => !!vin.prevout && vin.prevout.scriptpubkey_address === client['track-address']);
-          if (someVin) {
-            if (config.MEMPOOL.BACKEND !== 'esplora') {
-              try {
-                const fullTx = await transactionUtils.$getTransactionExtended(tx.txid, true);
-                foundTransactions.push(fullTx);
-              } catch (e) {
-                logger.debug('Error finding transaction in mempool: ' + (e instanceof Error ? e.message : e));
-              }
-            } else {
-              foundTransactions.push(tx);
-            }
-            return;
-          }
-          const someVout = tx.vout.some((vout) => vout.scriptpubkey_address === client['track-address']);
-          if (someVout) {
-            if (config.MEMPOOL.BACKEND !== 'esplora') {
-              try {
-                const fullTx = await transactionUtils.$getTransactionExtended(tx.txid, true);
-                foundTransactions.push(fullTx);
-              } catch (e) {
-                logger.debug('Error finding transaction in mempool: ' + (e instanceof Error ? e.message : e));
-              }
-            } else {
-              foundTransactions.push(tx);
-            }
-          }
-        }
-
-        if (foundTransactions.length) {
-          response['address-transactions'] = foundTransactions;
-        }
-      }
-
-      if (client['track-asset']) {
-        const foundTransactions: TransactionExtended[] = [];
-
-        newTransactions.forEach((tx) => {
-
-          if (client['track-asset'] === Common.nativeAssetId) {
-            if (tx.vin.some((vin) => !!vin.is_pegin)) {
-              foundTransactions.push(tx);
-              return;
-            }
-            if (tx.vout.some((vout) => !!vout.pegout)) {
-              foundTransactions.push(tx);
-            }
-          } else {
-            if (tx.vin.some((vin) => !!vin.issuance && vin.issuance.asset_id === client['track-asset'])) {
-              foundTransactions.push(tx);
-              return;
-            }
-            if (tx.vout.some((vout) => !!vout.asset && vout.asset === client['track-asset'])) {
-              foundTransactions.push(tx);
-            }
-          }
-        });
-
-        if (foundTransactions.length) {
-          response['address-transactions'] = foundTransactions;
-        }
-      }
-
-      if (client['track-tx']) {
-        const outspends: object = {};
-        newTransactions.forEach((tx) => tx.vin.forEach((vin, i) => {
-          if (vin.txid === client['track-tx']) {
-            outspends[vin.vout] = {
-              vin: i,
-              txid: tx.txid,
-            };
-          }
-        }));
-
-        if (Object.keys(outspends).length) {
-          response['utxoSpent'] = outspends;
-        }
-
-        if (rbfTransactions[client['track-tx']]) {
-          for (const rbfTransaction in rbfTransactions) {
-            if (client['track-tx'] === rbfTransaction) {
-              response['rbfTransaction'] = {
-                txid: rbfTransactions[rbfTransaction].txid,
-              };
-              break;
-            }
-          }
-        }
-      }
-
-      if (client['track-mempool-block'] >= 0) {
-        const index = client['track-mempool-block'];
-        if (mBlockDeltas[index]) {
-          response['projected-block-transactions'] = {
-            index: index,
-            delta: mBlockDeltas[index],
-          };
-        }
-      }
-
-      if (Object.keys(response).length) {
-        client.send(JSON.stringify(response));
-      }
-    });
-  }
- 
-  async handleNewBlock(block: BlockExtended, txIds: string[], transactions: TransactionExtended[]): Promise<void> {
-    if (!this.wss) {
-      throw new Error('WebSocket.Server is not set');
-    }
-
-    const _memPool = memPool.getMempool();
-
-    if (config.MEMPOOL.AUDIT) {
-      let projectedBlocks;
-      // template calculation functions have mempool side effects, so calculate audits using
-      // a cloned copy of the mempool if we're running a different algorithm for mempool updates
-      const auditMempool = (config.MEMPOOL.ADVANCED_GBT_AUDIT === config.MEMPOOL.ADVANCED_GBT_MEMPOOL) ? _memPool : deepClone(_memPool);
-      if (config.MEMPOOL.ADVANCED_GBT_AUDIT) {
-        projectedBlocks = await mempoolBlocks.makeBlockTemplates(auditMempool, false);
-      } else {
-        projectedBlocks = mempoolBlocks.updateMempoolBlocks(auditMempool, false);
-      }
-
-      if (Common.indexingEnabled() && memPool.isInSync()) {
-        const { censored, added, fresh, score, similarity } = Audit.auditBlock(transactions, projectedBlocks, auditMempool);
-        const matchRate = Math.round(score * 100 * 100) / 100;
-
-        const stripped = projectedBlocks[0]?.transactions ? projectedBlocks[0].transactions.map((tx) => {
-          return {
-            txid: tx.txid,
-            vsize: tx.vsize,
-            fee: tx.fee ? Math.round(tx.fee) : 0,
-            value: tx.value,
-          };
-        }) : [];
-
-        BlocksSummariesRepository.$saveTemplate({
-          height: block.height,
-          template: {
-            id: block.id,
-            transactions: stripped
-          }
-        });
-
-        BlocksAuditsRepository.$saveAudit({
-          time: block.timestamp,
-          height: block.height,
-          hash: block.id,
-          addedTxs: added,
-          missingTxs: censored,
-          freshTxs: fresh,
-          matchRate: matchRate,
-        });
-
-        if (block.extras) {
-          block.extras.matchRate = matchRate;
-          block.extras.similarity = similarity;
-        }
-      }
-    } else if (block.extras) {
-      const mBlocks = mempoolBlocks.getMempoolBlocksWithTransactions();
-      if (mBlocks?.length && mBlocks[0].transactions) {
-        block.extras.similarity = Common.getSimilarity(mBlocks[0], transactions);
-      }
-    }
-
-    const removed: string[] = [];
-    // Update mempool to remove transactions included in the new block
-    for (const txId of txIds) {
-      delete _memPool[txId];
-      removed.push(txId);
-      rbfCache.evict(txId);
-    }
-
-    if (config.MEMPOOL.ADVANCED_GBT_MEMPOOL) {
-      await mempoolBlocks.updateBlockTemplates(_memPool, [], removed, true);
-    } else {
-      mempoolBlocks.updateMempoolBlocks(_memPool, true);
-    }
-    const mBlocks = mempoolBlocks.getMempoolBlocks();
-    const mBlockDeltas = mempoolBlocks.getMempoolBlockDeltas();
-
-    const da = difficultyAdjustment.getDifficultyAdjustment();
-    const fees = feeApi.getRecommendedFee();
-
-    this.wss.clients.forEach((client) => {
-      if (client.readyState !== WebSocket.OPEN) {
-        return;
-      }
-
-      if (!client['want-blocks']) {
-        return;
-      }
-
-      const response = {
-        'block': block,
-        'mempoolInfo': memPool.getMempoolInfo(),
-        'da': da,
-        'fees': fees,
-      };
-
-      if (mBlocks && client['want-mempool-blocks']) {
-        response['mempool-blocks'] = mBlocks;
-      }
-
-      if (client['track-tx'] && txIds.indexOf(client['track-tx']) > -1) {
-        response['txConfirmed'] = true;
-      }
-
-      if (client['track-address']) {
-        const foundTransactions: TransactionExtended[] = [];
-
-        transactions.forEach((tx) => {
-          if (tx.vin && tx.vin.some((vin) => !!vin.prevout && vin.prevout.scriptpubkey_address === client['track-address'])) {
-            foundTransactions.push(tx);
-            return;
-          }
-          if (tx.vout && tx.vout.some((vout) => vout.scriptpubkey_address === client['track-address'])) {
-            foundTransactions.push(tx);
-          }
-        });
-
-        if (foundTransactions.length) {
-          foundTransactions.forEach((tx) => {
-            tx.status = {
-              confirmed: true,
-              block_height: block.height,
-              block_hash: block.id,
-              block_time: block.timestamp,
-            };
-          });
-
-          response['block-transactions'] = foundTransactions;
-        }
-      }
-
-      if (client['track-asset']) {
-        const foundTransactions: TransactionExtended[] = [];
-
-        transactions.forEach((tx) => {
-          if (client['track-asset'] === Common.nativeAssetId) {
-            if (tx.vin && tx.vin.some((vin) => !!vin.is_pegin)) {
-              foundTransactions.push(tx);
-              return;
-            }
-            if (tx.vout && tx.vout.some((vout) => !!vout.pegout)) {
-              foundTransactions.push(tx);
-            }
-          } else {
-            if (tx.vin && tx.vin.some((vin) => !!vin.issuance && vin.issuance.asset_id === client['track-asset'])) {
-              foundTransactions.push(tx);
-              return;
-            }
-            if (tx.vout && tx.vout.some((vout) => !!vout.asset && vout.asset === client['track-asset'])) {
-              foundTransactions.push(tx);
-            }
-          }
-        });
-
-        if (foundTransactions.length) {
-          foundTransactions.forEach((tx) => {
-            tx.status = {
-              confirmed: true,
-              block_height: block.height,
-              block_hash: block.id,
-              block_time: block.timestamp,
-            };
-          });
-
-          response['block-transactions'] = foundTransactions;
-        }
-      }
-
-      if (client['track-mempool-block'] >= 0) {
-        const index = client['track-mempool-block'];
-        if (mBlockDeltas && mBlockDeltas[index]) {
-          response['projected-block-transactions'] = {
-            index: index,
-            delta: mBlockDeltas[index],
-          };
-        }
-      }
-
-      client.send(JSON.stringify(response));
-    });
-  }
-}
-
-export default new WebsocketHandler();

backend/src/config.ts

@@ -1,298 +0,0 @@
-const configFromFile = require(
-    process.env.MEMPOOL_CONFIG_FILE ? process.env.MEMPOOL_CONFIG_FILE : '../mempool-config.json'
-);
-
-interface IConfig {
-  MEMPOOL: {
-    ENABLED: boolean;
-    NETWORK: 'mainnet' | 'testnet' | 'signet' | 'liquid' | 'liquidtestnet';
-    BACKEND: 'esplora' | 'electrum' | 'none';
-    HTTP_PORT: number;
-    SPAWN_CLUSTER_PROCS: number;
-    API_URL_PREFIX: string;
-    POLL_RATE_MS: number;
-    CACHE_DIR: string;
-    CLEAR_PROTECTION_MINUTES: number;
-    RECOMMENDED_FEE_PERCENTILE: number;
-    BLOCK_WEIGHT_UNITS: number;
-    INITIAL_BLOCKS_AMOUNT: number;
-    MEMPOOL_BLOCKS_AMOUNT: number;
-    INDEXING_BLOCKS_AMOUNT: number;
-    BLOCKS_SUMMARIES_INDEXING: boolean;
-    USE_SECOND_NODE_FOR_MINFEE: boolean;
-    EXTERNAL_ASSETS: string[];
-    EXTERNAL_MAX_RETRY: number;
-    EXTERNAL_RETRY_INTERVAL: number;
-    USER_AGENT: string;
-    STDOUT_LOG_MIN_PRIORITY: 'emerg' | 'alert' | 'crit' | 'err' | 'warn' | 'notice' | 'info' | 'debug';
-    AUTOMATIC_BLOCK_REINDEXING: boolean;
-    POOLS_JSON_URL: string,
-    POOLS_JSON_TREE_URL: string,
-    AUDIT: boolean;
-    ADVANCED_GBT_AUDIT: boolean;
-    ADVANCED_GBT_MEMPOOL: boolean;
-    CPFP_INDEXING: boolean;
-    MAX_BLOCKS_BULK_QUERY: number;
-  };
-  ESPLORA: {
-    REST_API_URL: string;
-  };
-  LIGHTNING: {
-    ENABLED: boolean;
-    BACKEND: 'lnd' | 'cln' | 'ldk';
-    TOPOLOGY_FOLDER: string;
-    STATS_REFRESH_INTERVAL: number;
-    GRAPH_REFRESH_INTERVAL: number;
-    LOGGER_UPDATE_INTERVAL: number;
-    FORENSICS_INTERVAL: number;
-    FORENSICS_RATE_LIMIT: number;
-  };
-  LND: {
-    TLS_CERT_PATH: string;
-    MACAROON_PATH: string;
-    REST_API_URL: string;
-  };
-  CLIGHTNING: {
-    SOCKET: string;
-  };
-  ELECTRUM: {
-    HOST: string;
-    PORT: number;
-    TLS_ENABLED: boolean;
-  };
-  CORE_RPC: {
-    HOST: string;
-    PORT: number;
-    USERNAME: string;
-    PASSWORD: string;
-  };
-  SECOND_CORE_RPC: {
-    HOST: string;
-    PORT: number;
-    USERNAME: string;
-    PASSWORD: string;
-  };
-  DATABASE: {
-    ENABLED: boolean;
-    HOST: string,
-    SOCKET: string,
-    PORT: number;
-    DATABASE: string;
-    USERNAME: string;
-    PASSWORD: string;
-  };
-  SYSLOG: {
-    ENABLED: boolean;
-    HOST: string;
-    PORT: number;
-    MIN_PRIORITY: 'emerg' | 'alert' | 'crit' | 'err' | 'warn' | 'notice' | 'info' | 'debug';
-    FACILITY: string;
-  };
-  STATISTICS: {
-    ENABLED: boolean;
-    TX_PER_SECOND_SAMPLE_PERIOD: number;
-  };
-  BISQ: {
-    ENABLED: boolean;
-    DATA_PATH: string;
-  };
-  SOCKS5PROXY: {
-    ENABLED: boolean;
-    USE_ONION: boolean;
-    HOST: string;
-    PORT: number;
-    USERNAME: string;
-    PASSWORD: string;
-  };
-  PRICE_DATA_SERVER: {
-    TOR_URL: string;
-    CLEARNET_URL: string;
-  };
-  EXTERNAL_DATA_SERVER: {
-    MEMPOOL_API: string;
-    MEMPOOL_ONION: string;
-    LIQUID_API: string;
-    LIQUID_ONION: string;
-    BISQ_URL: string;
-    BISQ_ONION: string;
-  };
-  MAXMIND: {
-    ENABLED: boolean;
-    GEOLITE2_CITY: string;
-    GEOLITE2_ASN: string;
-    GEOIP2_ISP: string;
-  },
-}
-
-const defaults: IConfig = {
-  'MEMPOOL': {
-    'ENABLED': true,
-    'NETWORK': 'mainnet',
-    'BACKEND': 'none',
-    'HTTP_PORT': 8999,
-    'SPAWN_CLUSTER_PROCS': 0,
-    'API_URL_PREFIX': '/api/v1/',
-    'POLL_RATE_MS': 2000,
-    'CACHE_DIR': './cache',
-    'CLEAR_PROTECTION_MINUTES': 20,
-    'RECOMMENDED_FEE_PERCENTILE': 50,
-    'BLOCK_WEIGHT_UNITS': 4000000,
-    'INITIAL_BLOCKS_AMOUNT': 8,
-    'MEMPOOL_BLOCKS_AMOUNT': 8,
-    'INDEXING_BLOCKS_AMOUNT': 11000, // 0 = disable indexing, -1 = index all blocks
-    'BLOCKS_SUMMARIES_INDEXING': false,
-    'USE_SECOND_NODE_FOR_MINFEE': false,
-    'EXTERNAL_ASSETS': [],
-    'EXTERNAL_MAX_RETRY': 1,
-    'EXTERNAL_RETRY_INTERVAL': 0,
-    'USER_AGENT': 'mempool',
-    'STDOUT_LOG_MIN_PRIORITY': 'debug',
-    'AUTOMATIC_BLOCK_REINDEXING': false,
-    'POOLS_JSON_URL': 'https://raw.githubusercontent.com/mempool/mining-pools/master/pools-v2.json',
-    'POOLS_JSON_TREE_URL': 'https://api.github.com/repos/mempool/mining-pools/git/trees/master',
-    'AUDIT': false,
-    'ADVANCED_GBT_AUDIT': false,
-    'ADVANCED_GBT_MEMPOOL': false,
-    'CPFP_INDEXING': false,
-    'MAX_BLOCKS_BULK_QUERY': 0,
-  },
-  'ESPLORA': {
-    'REST_API_URL': 'http://127.0.0.1:3000',
-  },
-  'ELECTRUM': {
-    'HOST': '127.0.0.1',
-    'PORT': 3306,
-    'TLS_ENABLED': true,
-  },
-  'CORE_RPC': {
-    'HOST': '127.0.0.1',
-    'PORT': 8332,
-    'USERNAME': 'mempool',
-    'PASSWORD': 'mempool'
-  },
-  'SECOND_CORE_RPC': {
-    'HOST': '127.0.0.1',
-    'PORT': 8332,
-    'USERNAME': 'mempool',
-    'PASSWORD': 'mempool'
-  },
-  'DATABASE': {
-    'ENABLED': true,
-    'HOST': '127.0.0.1',
-    'SOCKET': '',
-    'PORT': 3306,
-    'DATABASE': 'mempool',
-    'USERNAME': 'mempool',
-    'PASSWORD': 'mempool'
-  },
-  'SYSLOG': {
-    'ENABLED': true,
-    'HOST': '127.0.0.1',
-    'PORT': 514,
-    'MIN_PRIORITY': 'info',
-    'FACILITY': 'local7'
-  },
-  'STATISTICS': {
-    'ENABLED': true,
-    'TX_PER_SECOND_SAMPLE_PERIOD': 150
-  },
-  'BISQ': {
-    'ENABLED': false,
-    'DATA_PATH': '/bisq/statsnode-data/btc_mainnet/db'
-  },
-  'LIGHTNING': {
-    'ENABLED': false,
-    'BACKEND': 'lnd',
-    'TOPOLOGY_FOLDER': '',
-    'STATS_REFRESH_INTERVAL': 600,
-    'GRAPH_REFRESH_INTERVAL': 600,
-    'LOGGER_UPDATE_INTERVAL': 30,
-    'FORENSICS_INTERVAL': 43200,
-    'FORENSICS_RATE_LIMIT': 20,
-  },
-  'LND': {
-    'TLS_CERT_PATH': '',
-    'MACAROON_PATH': '',
-    'REST_API_URL': 'https://localhost:8080',
-  },
-  'CLIGHTNING': {
-    'SOCKET': '',
-  },
-  'SOCKS5PROXY': {
-    'ENABLED': false,
-    'USE_ONION': true,
-    'HOST': '127.0.0.1',
-    'PORT': 9050,
-    'USERNAME': '',
-    'PASSWORD': ''
-  },
-  'PRICE_DATA_SERVER': {
-    'TOR_URL': 'http://wizpriceje6q5tdrxkyiazsgu7irquiqjy2dptezqhrtu7l2qelqktid.onion/getAllMarketPrices',
-    'CLEARNET_URL': 'https://price.bisq.wiz.biz/getAllMarketPrices'
-  },
-  'EXTERNAL_DATA_SERVER': {
-    'MEMPOOL_API': 'https://mempool.space/api/v1',
-    'MEMPOOL_ONION': 'http://mempoolhqx4isw62xs7abwphsq7ldayuidyx2v2oethdhhj6mlo2r6ad.onion/api/v1',
-    'LIQUID_API': 'https://liquid.network/api/v1',
-    'LIQUID_ONION': 'http://liquidmom47f6s3m53ebfxn47p76a6tlnxib3wp6deux7wuzotdr6cyd.onion/api/v1',
-    'BISQ_URL': 'https://bisq.markets/api',
-    'BISQ_ONION': 'http://bisqmktse2cabavbr2xjq7xw3h6g5ottemo5rolfcwt6aly6tp5fdryd.onion/api'
-  },
-  'MAXMIND': {
-    'ENABLED': false,
-    'GEOLITE2_CITY': '/usr/local/share/GeoIP/GeoLite2-City.mmdb',
-    'GEOLITE2_ASN': '/usr/local/share/GeoIP/GeoLite2-ASN.mmdb',
-    'GEOIP2_ISP': '/usr/local/share/GeoIP/GeoIP2-ISP.mmdb'
-  },
-};
-
-class Config implements IConfig {
-  MEMPOOL: IConfig['MEMPOOL'];
-  ESPLORA: IConfig['ESPLORA'];
-  ELECTRUM: IConfig['ELECTRUM'];
-  CORE_RPC: IConfig['CORE_RPC'];
-  SECOND_CORE_RPC: IConfig['SECOND_CORE_RPC'];
-  DATABASE: IConfig['DATABASE'];
-  SYSLOG: IConfig['SYSLOG'];
-  STATISTICS: IConfig['STATISTICS'];
-  BISQ: IConfig['BISQ'];
-  LIGHTNING: IConfig['LIGHTNING'];
-  LND: IConfig['LND'];
-  CLIGHTNING: IConfig['CLIGHTNING'];
-  SOCKS5PROXY: IConfig['SOCKS5PROXY'];
-  PRICE_DATA_SERVER: IConfig['PRICE_DATA_SERVER'];
-  EXTERNAL_DATA_SERVER: IConfig['EXTERNAL_DATA_SERVER'];
-  MAXMIND: IConfig['MAXMIND'];
-
-  constructor() {
-    const configs = this.merge(configFromFile, defaults);
-    this.MEMPOOL = configs.MEMPOOL;
-    this.ESPLORA = configs.ESPLORA;
-    this.ELECTRUM = configs.ELECTRUM;
-    this.CORE_RPC = configs.CORE_RPC;
-    this.SECOND_CORE_RPC = configs.SECOND_CORE_RPC;
-    this.DATABASE = configs.DATABASE;
-    this.SYSLOG = configs.SYSLOG;
-    this.STATISTICS = configs.STATISTICS;
-    this.BISQ = configs.BISQ;
-    this.LIGHTNING = configs.LIGHTNING;
-    this.LND = configs.LND;
-    this.CLIGHTNING = configs.CLIGHTNING;
-    this.SOCKS5PROXY = configs.SOCKS5PROXY;
-    this.PRICE_DATA_SERVER = configs.PRICE_DATA_SERVER;
-    this.EXTERNAL_DATA_SERVER = configs.EXTERNAL_DATA_SERVER;
-    this.MAXMIND = configs.MAXMIND;
-  }
-
-  merge = (...objects: object[]): IConfig => {
-    // @ts-ignore
-    return objects.reduce((prev, next) => {
-      Object.keys(prev).forEach(key => {
-        next[key] = { ...next[key], ...prev[key] };
-      });
-      return next;
-    });
-  }
-}
-
-export default new Config();