Release v2.3.1

.github/CODEOWNERS

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

.github/FUNDING.yml

@@ -0,0 +1,12 @@
+# These are supported funding model platforms
+
+github: ['mempool'] # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
+patreon: # Replace with a single Patreon username
+open_collective: # Replace with a single Open Collective username
+ko_fi: # Replace with a single Ko-fi username
+tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+custom: ['https://mempool.space/sponsor'] # Replace with up to 4 custom sponsorship URLs e.g., ['link1', 'link2']

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

@@ -1,13 +1,14 @@
 ---
 name: 🐛 Bug Report
-about: Report bugs (no support requests, please)
+about: Report bugs or other issues to us on GitHub
 ---
 
 <!--
    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
+   If you have a support request, please join our Keybase or Matrix:
+   https://keybase.io/team/mempool
+   https://matrix.to/#/#mempool:bitcoin.kyoto
 -->
 
 ### Description

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

@@ -1,13 +1,14 @@
 ---
 name: ✨ Feature Request
-about: Request a feature or suggest other enhancements
+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
+   If you have a support request, please join our Keybase or Matrix:
+   https://keybase.io/team/mempool
+   https://matrix.to/#/#mempool:bitcoin.kyoto
 -->
 
 ### Description

.github/ISSUE_TEMPLATE/config.yml

@@ -1,8 +1,8 @@
 blank_issues_enabled: false
 contact_links:
-  - name: 🙋 Need help? Chat with us on Matrix
-    url: https://matrix.to/#/#mempool.support:bitcoin.kyoto
+  - name: 💬 Need help? Chat with us on Matrix
+    url: https://matrix.to/#/#mempool:bitcoin.kyoto
+    about: For support requests or general questions
+  - name: 💬 Need help? Chat with us on Keybase
+    url: https://keybase.io/team/mempool
     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

@@ -1,68 +0,0 @@
-version: 2
-updates:
-  - package-ecosystem: npm
-    versioning-strategy: increase
-    directory: "/backend"
-    schedule:
-      interval: daily
-    open-pull-requests-limit: 10
-    ignore:
-      - dependency-name: "*"
-        update-types:
-          ["version-update:semver-major", "version-update:semver-patch"]
-    allow:
-      - dependency-type: "production"
-
-  - package-ecosystem: npm
-    directory: "/frontend"
-    versioning-strategy: increase
-    groups:
-      frontend-angular-dependencies:
-        patterns:
-          - "@angular*"
-          - "@ng-*"
-          - "ngx-*"
-      frontend-jest-dependencies:
-        patterns:
-          - "@types/jest"
-          - "jest"
-      frontend-eslint-dependencies:
-        patterns:
-          - "@typescript-eslint*"
-          - "eslint"
-    schedule:
-      interval: daily
-    open-pull-requests-limit: 10
-    ignore:
-      - dependency-name: "*"
-        update-types:
-          ["version-update:semver-major", "version-update:semver-patch"]
-    allow:
-      - dependency-type: "production"
-
-  - package-ecosystem: docker
-    directory: "/docker/backend"
-    schedule:
-      interval: weekly
-    ignore:
-      - dependency-name: "*"
-        update-types:
-          ["version-update:semver-major", "version-update:semver-patch"]
-
-  - package-ecosystem: docker
-    directory: "/docker/frontend"
-    schedule:
-      interval: weekly
-    ignore:
-      - dependency-name: "*"
-        update-types:
-          ["version-update:semver-major", "version-update:semver-patch"]
-
-  - package-ecosystem: "github-actions"
-    directory: "/"
-    schedule:
-      interval: weekly
-    ignore:
-      - dependency-name: "*"
-        update-types:
-          ["version-update:semver-major", "version-update:semver-patch"]

.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

@@ -1,332 +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: ["18", "20"]
-        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: ${{ matrix.node }}
-          registry-url: "https://registry.npmjs.org"
-
-      - name: Read rust-toolchain file from repository
-        id: gettoolchain
-        run: echo "::set-output name=toolchain::$(cat rust-toolchain)"
-        working-directory: ${{ matrix.node }}/${{ matrix.flavor }}
-
-      - name: Install ${{ steps.gettoolchain.outputs.toolchain }} Rust toolchain
-        # Latest version available on this commit is 1.71.1
-        # Commit date is Aug 3, 2023
-        uses: dtolnay/rust-toolchain@be73d7920c329f220ce78e0234b8f96b7ae60248
-        with:
-          toolchain: ${{ steps.gettoolchain.outputs.toolchain }}
-
-      - 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:ci
-        working-directory: ${{ matrix.node }}/${{ matrix.flavor }}/backend
-
-      - name: Build
-        run: npm run build
-        working-directory: ${{ matrix.node }}/${{ matrix.flavor }}/backend
-
-
-  cache:
-    name: "Cache assets for builds"
-    runs-on: "ubuntu-latest"
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-        with:
-          path: assets
-
-      - 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
-        working-directory: assets/frontend
-
-      - name: Restore cached mining pool assets
-        continue-on-error: true
-        id: cache-mining-pool-restore
-        uses: actions/cache/restore@v4
-        with:
-          path: |
-            mining-pool-assets.zip
-          key: mining-pool-assets-cache
-
-      - name: Restore promo video assets
-        continue-on-error: true
-        id: cache-promo-video-restore
-        uses: actions/cache/restore@v4
-        with:
-          path: |
-            promo-video-assets.zip
-          key: promo-video-assets-cache
-
-      - name: Unzip assets before building (src/resources)
-        continue-on-error: true
-        run: unzip -o mining-pool-assets.zip -d assets/frontend/src/resources/mining-pools
-
-      - name: Unzip assets before building (src/resources)
-        continue-on-error: true
-        run: unzip -o promo-video-assets.zip -d assets/frontend/src/resources/promo-video
-
-      # - name: Unzip assets before building (dist)
-      #   continue-on-error: true
-      #   run: unzip assets.zip -d assets/frontend/dist/mempool/browser/resources
-
-      - name: Sync-assets
-        run: npm run sync-assets-dev
-        working-directory: assets/frontend
-
-      - name: Zip mining-pool assets
-        run: zip -jrq mining-pool-assets.zip assets/frontend/src/resources/mining-pools/*
-
-      - name: Zip promo-video assets
-        run: zip -jrq promo-video-assets.zip assets/frontend/src/resources/promo-video/*
-
-      - name: Upload mining pool assets as artifact
-        uses: actions/upload-artifact@v4
-        with:
-          name: mining-pool-assets
-          path: mining-pool-assets.zip
-
-      - name: Upload promo video assets as artifact
-        uses: actions/upload-artifact@v4
-        with:
-          name: promo-video-assets
-          path: promo-video-assets.zip
-
-      - name: Save mining pool assets cache
-        id: cache-mining-pool-save
-        uses: actions/cache/save@v4
-        with:
-          path: |
-            mining-pool-assets.zip
-          key: mining-pool-assets-cache
-
-      - name: Save promo video assets cache
-        id: cache-promo-video-save
-        uses: actions/cache/save@v4
-        with:
-          path: |
-            promo-video-assets.zip
-          key: promo-video-assets-cache
-
-  frontend:
-    needs: cache
-    if: "!contains(github.event.pull_request.labels.*.name, 'ops') && !contains(github.head_ref, 'ops/')"
-    strategy:
-      matrix:
-        node: ["18", "20"]
-        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: Restore cached mining pool assets
-        continue-on-error: true
-        id: cache-mining-pool-restore
-        uses: actions/cache/restore@v4
-        with:
-          path: |
-            mining-pool-assets.zip
-          key: mining-pool-assets-cache
-
-      - name: Restore promo video assets
-        continue-on-error: true
-        id: cache-promo-video-restore
-        uses: actions/cache/restore@v4
-        with:
-          path: |
-            promo-video-assets.zip
-          key: promo-video-assets-cache
-
-      - name: Download artifact
-        uses: actions/download-artifact@v4
-        with:
-          name: mining-pool-assets
-
-      - name: Unzip assets before building (src/resources)
-        run: unzip -o mining-pool-assets.zip -d ${{ matrix.node }}/${{ matrix.flavor }}/frontend/src/resources/mining-pools
-
-      - name: Download artifact
-        uses: actions/download-artifact@v4
-        with:
-          name: promo-video-assets
-
-      - name: Unzip assets before building (src/resources)
-        run: unzip -o promo-video-assets.zip -d ${{ matrix.node }}/${{ matrix.flavor }}/frontend/src/resources/promo-video
-
-      # - name: Unzip assets before building (dist)
-      #   run: unzip assets.zip -d ${{ matrix.node }}/${{ matrix.flavor }}/frontend/dist/mempool/browser/resources
-
-      - name: Display resulting source tree
-        run: ls -R
-
-      - name: Build
-        run: npm run build
-        working-directory: ${{ matrix.node }}/${{ matrix.flavor }}/frontend
-        env: 
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-  
-  e2e:
-    if: "!contains(github.event.pull_request.labels.*.name, 'ops') && !contains(github.head_ref, 'ops/')"
-    runs-on: "ubuntu-latest"
-    needs: frontend
-    strategy:
-      fail-fast: false
-      matrix:
-        # module: ["mempool", "liquid", "bisq"] Disabling bisq support for now
-        module: ["mempool", "liquid"]
-        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: 20
-          cache: "npm"
-          cache-dependency-path: ${{ matrix.module }}/frontend/package-lock.json
-
-      - name: Restore cached mining pool assets
-        continue-on-error: true
-        id: cache-mining-pool-restore
-        uses: actions/cache/restore@v4
-        with:
-          path: |
-            mining-pool-assets.zip
-          key: mining-pool-assets-cache
-  
-      - name: Restore cached promo video assets
-        continue-on-error: true
-        id: cache-promo-video-restore
-        uses: actions/cache/restore@v4
-        with:
-          path: |
-            promo-video-assets.zip
-          key: promo-video-assets-cache
-
-      - name: Download artifact
-        uses: actions/download-artifact@v4
-        with:
-          name: mining-pool-assets
-
-      - name: Unzip assets before building (src/resources)
-        run: unzip -o mining-pool-assets.zip -d ${{ matrix.module }}/frontend/src/resources/mining-pools
-
-      - name: Download artifact
-        uses: actions/download-artifact@v4
-        with:
-          name: promo-video-assets
-
-      - name: Unzip assets before building (src/resources)
-        run: unzip -o promo-video-assets.zip -d ${{ matrix.module }}/frontend/src/resources/promo-video
-      
-      - name: Chrome browser tests (${{ 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/cypress.yml

@@ -0,0 +1,80 @@
+name: Cypress Tests
+
+on: [push, pull_request]
+
+jobs:
+  cypress:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        containers: [1, 2, 3, 4, 5]
+        os: ["ubuntu-latest"]
+        browser: [chrome]
+    name: E2E tests on ${{ matrix.browser }} - ${{ matrix.os }}
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Setup node
+        uses: actions/setup-node@v2
+        with:
+          node-version: 16.10.0
+          cache: 'npm'
+          cache-dependency-path: frontend/package-lock.json
+      - name: ${{ matrix.browser }} browser tests (Mempool)
+        uses: cypress-io/github-action@v2
+        with:
+          working-directory: frontend
+          build: npm run config:defaults:mempool
+          start: npm run start:local-prod
+          wait-on: 'http://localhost:4200'
+          wait-on-timeout: 120
+          record: true
+          parallel: true
+          group: Tests on ${{ matrix.browser }} (Mempool)
+          browser: ${{ matrix.browser }}
+          ci-build-id: '${{ github.sha }}-${{ github.workflow }}-${{ github.event_name }}'
+        env:
+          CYPRESS_RECORD_KEY: ${{ secrets.CYPRESS_RECORD_KEY }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CYPRESS_PROJECT_ID: ${{ secrets.CYPRESS_PROJECT_ID }}
+
+      - name: ${{ matrix.browser }} browser tests (Liquid)
+        uses: cypress-io/github-action@v2
+        if: always()
+        with:
+          working-directory: frontend
+          build: npm run config:defaults:liquid
+          start: npm run start:local-prod
+          wait-on: 'http://localhost:4200'
+          wait-on-timeout: 120
+          record: true
+          parallel: true
+          spec: cypress/integration/liquid/liquid.spec.ts
+          group: Tests on ${{ matrix.browser }} (Liquid)
+          browser: ${{ matrix.browser }}
+          ci-build-id: '${{ github.sha }}-${{ github.workflow }}-${{ github.event_name }}'
+        env:
+          CYPRESS_RECORD_KEY: ${{ secrets.CYPRESS_RECORD_KEY }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CYPRESS_PROJECT_ID: ${{ secrets.CYPRESS_PROJECT_ID }}
+
+      - name: ${{ matrix.browser }} browser tests (Bisq)
+        uses: cypress-io/github-action@v2
+        if: always()
+        with:
+          working-directory: frontend
+          build: npm run config:defaults:bisq
+          start: npm run start:local-prod
+          wait-on: 'http://localhost:4200'
+          wait-on-timeout: 120
+          record: true
+          parallel: true
+          spec: cypress/integration/bisq/bisq.spec.ts
+          group: Tests on ${{ matrix.browser }} (Bisq)
+          browser: ${{ matrix.browser }}
+          ci-build-id: '${{ github.sha }}-${{ github.workflow }}-${{ github.event_name }}'
+        env:
+          CYPRESS_RECORD_KEY: ${{ secrets.CYPRESS_RECORD_KEY }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CYPRESS_PROJECT_ID: ${{ secrets.CYPRESS_PROJECT_ID }}

.github/workflows/get_backend_hash.yml

@@ -1,19 +0,0 @@
-name: 'Print backend hashes'
-
-on: [workflow_dispatch]
-
-jobs:
-  print-backend-sha:
-    runs-on: 'ubuntu-latest'
-    name: Print backend hashes
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-        with:
-          path: repo
-
-      - name: Run script
-        working-directory: repo
-        run: |
-          chmod +x ./scripts/get_backend_hash.sh
-          sh ./scripts/get_backend_hash.sh

.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

@@ -1,7 +1,7 @@
 name: Docker build on tag
 env:
   DOCKER_CLI_EXPERIMENTAL: enabled
-  TAG_FMT: "^refs/tags/(((.?[0-9]+){3,4}))$"
+  TAG_FMT: '^refs/tags/(((.?[0-9]+){3,4}))$'
   DOCKER_BUILDKIT: 0
   COMPOSE_DOCKER_CLI_BUILD: 0
 
@@ -11,9 +11,6 @@ on:
       - v[0-9]+.[0-9]+.[0-9]+
       - v[0-9]+.[0-9]+.[0-9]+-*
 
-permissions:
-  contents: read
-
 jobs:
   build:
     strategy:
@@ -21,46 +18,16 @@ jobs:
         service:
           - frontend
           - backend
-    runs-on: ubuntu-latest
-    timeout-minutes: 120
+    runs-on: ubuntu-18.04
     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
 
@@ -68,24 +35,24 @@ jobs:
         run: echo "${{ secrets.DOCKER_PASSWORD }}" | docker login -u "${{ secrets.DOCKER_USERNAME }}" --password-stdin
 
       - name: Checkout project
-        uses: actions/checkout@v4
+        uses: actions/checkout@v2
 
       - name: Init repo for Dockerization
         run: docker/init.sh "$TAG"
 
       - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
+        uses: docker/setup-qemu-action@v1
         id: qemu
 
       - name: Setup Docker buildx action
-        uses: docker/setup-buildx-action@v3
+        uses: docker/setup-buildx-action@v1
         id: buildx
 
       - name: Available platforms
         run: echo ${{ steps.buildx.outputs.platforms }}
 
       - name: Cache Docker layers
-        uses: actions/cache@v3
+        uses: actions/cache@v2
         id: cache
         with:
           path: /tmp/.buildx-cache
@@ -98,7 +65,7 @@ jobs:
           docker buildx build \
           --cache-from "type=local,src=/tmp/.buildx-cache" \
           --cache-to "type=local,dest=/tmp/.buildx-cache" \
-          --platform linux/amd64,linux/arm64 \
+          --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 }}/ \

.gitignore

@@ -2,7 +2,3 @@ sitemap
 data
 docker-compose.yml
 backend/mempool-config.json
-*.swp
-frontend/src/resources/config.template.js
-frontend/src/resources/config.js
-target

.nvmrc

@@ -1 +1 @@
-v20.8.0
+v16.10.0

.vscode/settings.json

@@ -1,6 +1,4 @@
 {
   "editor.tabSize": 2,
-  "typescript.preferences.importModuleSpecifier": "relative",
-  "typescript.tsdk": "./backend/node_modules/typescript/lib",
-  "rust-analyzer.procMacro.ignored": { "napi-derive": ["napi"] }
+  "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

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Cargo.toml

@@ -1,8 +0,0 @@
-[workspace]
-members = [
-	"./backend/rust-gbt",
-]
-
-[profile.release]
-lto = true
-codegen-units = 1

GNUmakefile

@@ -0,0 +1,47 @@
+# 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

@@ -1,28 +1,29 @@
-The Mempool Open Source Project®
-Copyright (c) 2019-2023 Mempool Space K.K. and other shadowy super-coders
+The Mempool Open Source Project
+Copyright (c) 2019-2021 The Mempool Open Source Project Developers
 
 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 any later version
-approved by a proxy statement published on <https://mempool.space/about>.
+the terms of (at your option) either:
 
-However, this copyright license does not include an implied right or license
-to use any trademarks, service marks, logos, or trade names of Mempool Space K.K.
-or any other contributor to The Mempool Open Source Project.
+ 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
 
-The Mempool Open Source Project®, Mempool Accelerator™, Mempool Enterprise®, 
-Mempool Liquidity™, mempool.space®, Be your own explorer™, Explore the full 
-Bitcoin ecosystem™, Mempool Goggles™, the mempool Logo, the mempool Square logo, 
-the mempool Blocks logo, the mempool Blocks 3 | 2 logo, the mempool.space Vertical 
-Logo, and the mempool.space Horizontal logo are registered trademarks or trademarks 
-of Mempool Space K.K in Japan, the United States, and/or other countries.
+ 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>.
 
-See our full Trademark Policy and Guidelines for more details, published on 
-<https://mempool.space/trademark-policy>.
+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
-along with this program. If not, see <http://www.gnu.org/licenses/>.
+and the GNU General Public License along with this program.  If not, see
+<http://www.gnu.org/licenses/>.

LICENSE.GPL-3.md

@@ -0,0 +1,675 @@
+### 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
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+
+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
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+changed, so that their problems will not be attributed erroneously to
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+
+Some devices are designed to deny users access to install or run
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+Finally, every program is threatened constantly by software patents.
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+
+The precise terms and conditions for copying, distribution and
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+
+### TERMS AND CONDITIONS
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+"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
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+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
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+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
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+
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+(kernel, window system, and so on) of the specific operating system
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+produce the work, or an object code interpreter used to run it.
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+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
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+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,
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+
+The Corresponding Source need not include anything that users can
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+
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+
+#### 2. Basic Permissions.
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+rights of fair use or other equivalent, as provided by copyright law.
+
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+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
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+terms of this License in conveying all material for which you do not
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+Conveying under any other circumstances is permitted solely under the
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+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
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+keep intact all notices of the absence of any warranty; and give all
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+
+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.
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+#### 5. Conveying Modified Source Versions.
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+You may convey a work based on the Program, or the modifications to
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+-   a) The work must carry prominent notices stating that you modified
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+    License to anyone who comes into possession of a copy. This
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+    additional terms, to the whole of the work, and all its parts,
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+    permission to license the work in any other way, but it does not
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+-   d) If the work has interactive user interfaces, each must display
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+works, which are not by their nature extensions of the covered work,
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+in or on a volume of a storage or distribution medium, is called an
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+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:
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+    (including a physical distribution medium), accompanied by the
+    Corresponding Source fixed on a durable physical medium
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+    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
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+    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
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+    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
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+    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
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+    public at no charge under subsection 6d.
+
+A separable portion of the object code, whose source code is excluded
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+included in conveying the object code work.
+
+A "User Product" is either (1) a "consumer product", which means any
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+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
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+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
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+
+All other non-permissive additional terms are considered "further
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+received it, or any part of it, contains a notice stating that it is
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+a further restriction but permits relicensing or conveying under this
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+of that license document, provided that the further restriction does
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+
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+
+#### 8. Termination.
+
+You may not propagate or modify a covered work except as expressly
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+
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+Moreover, your license from a particular copyright holder is
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+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
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+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
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+#### 10. Automatic Licensing of Downstream Recipients.
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+#### 11. Patents.
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+A contributor's "essential patent claims" are all patent claims owned
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+available, or (2) arrange to deprive yourself of the benefit of the
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+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
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+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
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+
+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
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+business of distributing software, under which you make payment to the
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+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
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+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
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+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
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+
+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.
+
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+permissions. However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
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+
+#### 15. Disclaimer of Warranty.
+
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+
+#### 16. Limitation of Liability.
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+#### 17. Interpretation of Sections 15 and 16.
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+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

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

README.md

@@ -1,38 +1,415 @@
-# 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)
+# The Mempool Open Source Project™
 
-https://user-images.githubusercontent.com/93150691/226236121-375ea64f-b4a1-4cc0-8fad-a6fb33226840.mp4
+Mempool is the fully featured visualizer, explorer, and API service running on [mempool.space](https://mempool.space/), an open source project developed and operated for the benefit of the Bitcoin community, with a focus on the emerging transaction fee market to help our transition into a multi-layer ecosystem.
 
-<br>
+![mempool](https://mempool.space/resources/screenshots/v2.3.0-dashboard.png)
 
-Mempool is the fully-featured mempool visualizer, explorer, and API service running at [mempool.space](https://mempool.space/). 
+## Installation Methods
 
-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 can be self-hosted on a wide variety of your own hardware, ranging from a simple one-click installation on a Raspberry Pi distro, all the way to an advanced high availability cluster of powerful servers for a production instance. We support the following installation methods, ranked in order from simple to advanced:
 
-# Installation Methods
+1) One-click installation on: [Umbrel](https://github.com/getumbrel/umbrel), [RaspiBlitz](https://github.com/rootzoll/raspiblitz), [RoninDojo](https://code.samourai.io/ronindojo/RoninDojo), or [MyNode](https://github.com/mynodebtc/mynode).
+2) [Docker installation on Linux using docker-compose](https://github.com/mempool/mempool/tree/master/docker)
+3) [Manual installation on Linux or FreeBSD](https://github.com/mempool/mempool#manual-installation)
+4) [Production installation on a powerful FreeBSD server](https://github.com/mempool/mempool/tree/master/production)
+5) [High Availability cluster using powerful FreeBSD servers](https://github.com/mempool/mempool/tree/master/production#high-availability)
 
-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. 
+# Docker Installation
 
-Most people should use a <a href="#one-click-installation">one-click install method</a>.
+The `docker` directory contains the Dockerfiles used to build and release the official images and a `docker-compose.yml` file that is intended for end users to run a Mempool instance with minimal effort.
 
-Other install methods are meant for developers and others with experience managing servers. If you want support for your own production instance of Mempool, or if you'd like to have your own instance of Mempool run by the mempool.space team on their own global ISP infrastructure—check out <a href="https://mempool.space/enterprise" target="_blank">Mempool Enterprise®</a>.
+## bitcoind only configuration
 
-<a id="one-click-installation"></a>
-## One-Click Installation
+To run an instance with the default settings, use the following command:
 
-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)
-- [StartOS](https://github.com/Start9Labs/start-os)
-- [nix-bitcoin](https://github.com/fort-nix/nix-bitcoin/blob/a1eacce6768ca4894f365af8f79be5bbd594e1c3/examples/configuration.nix#L129)
+```bash
+$ docker-compose up
+```
 
-**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.
+The default configuration will allow you to run Mempool using `bitcoind` as the backend, so address lookups will be disabled. It assumes you have added RPC credentials for the `mempool` user with a `mempool` password in your `bitcoin.conf` file:
 
-## Advanced Installation Methods
+```
+rpcuser=mempool
+rpcpassword=mempool
+```
 
-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.
+If you want to use your current credentials, update them in the `docker-compose.yml` file:
 
-- 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.
+```
+  api:
+    environment:
+      MEMPOOL_BACKEND: "none"
+      RPC_HOST: "172.27.0.1"
+      RPC_PORT: "8332"
+      RPC_USER: "mempool"
+      RPC_PASS: "mempool"
+```
+
+Note: the IP in the example above refers to Docker's default gateway IP address so the container can hit the `bitcoind` instance running on the host machine. If your setup is different, update it accordingly.
+
+You can check if the instance is running by visiting http://localhost - the graphs will be populated as new transactions are detected.
+
+## bitcoind+electrum configuration
+
+In order to run with a `electrum` compatible server as the backend, in addition to the settings required for running with `bitcoind` above, you will need to make the following changes to the `docker-compose.yml` file:
+
+- Under the `api` service, change the value of the `MEMPOOL_BACKEND` key from `none` to `electrum`:
+
+```
+  api:
+    environment:
+      MEMPOOL_BACKEND: "none"
+```
+
+- Under the `api` service, set the `ELECTRUM_HOST` and `ELECTRUM_PORT` keys to your Docker host IP address and set `ELECTRUM_TLS_ENABLED` to `false`:
+
+```
+  api:
+    environment:
+      ELECTRUM_HOST: "172.27.0.1"
+      ELECTRUM_PORT: "50002"
+      ELECTRUM_TLS_ENABLED: "false"
+```
+
+You can update any of the backend settings in the `mempool-config.json` file using the following environment variables to override them under the same `api` `environment` section.
+
+JSON:
+```
+  "MEMPOOL": {
+    "NETWORK": "mainnet",
+    "BACKEND": "electrum",
+    "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,
+    "PRICE_FEED_UPDATE_INTERVAL": 3600,
+    "USE_SECOND_NODE_FOR_MINFEE": false,
+    "EXTERNAL_ASSETS": []
+  },
+```
+
+docker-compose overrides::
+```
+      MEMPOOL_NETWORK: ""
+      MEMPOOL_BACKEND: ""
+      MEMPOOL_HTTP_PORT: ""
+      MEMPOOL_SPAWN_CLUSTER_PROCS: ""
+      MEMPOOL_API_URL_PREFIX: ""
+      MEMPOOL_POLL_RATE_MS: ""
+      MEMPOOL_CACHE_DIR: ""
+      MEMPOOL_CLEAR_PROTECTION_MINUTES: ""
+      MEMPOOL_RECOMMENDED_FEE_PERCENTILE: ""
+      MEMPOOL_BLOCK_WEIGHT_UNITS: ""
+      MEMPOOL_INITIAL_BLOCKS_AMOUNT: ""
+      MEMPOOL_MEMPOOL_BLOCKS_AMOUNT: ""
+      MEMPOOL_PRICE_FEED_UPDATE_INTERVAL: ""
+      MEMPOOL_USE_SECOND_NODE_FOR_MINFEE: ""
+      MEMPOOL_EXTERNAL_ASSETS: ""
+```
+
+JSON:
+```
+"CORE_RPC": {
+    "HOST": "127.0.0.1",
+    "PORT": 8332,
+    "USERNAME": "mempool",
+    "PASSWORD": "mempool"
+  },
+```
+docker-compose overrides:
+```
+      CORE_RPC_HOST: ""
+      CORE_RPC_PORT: ""
+      CORE_RPC_USERNAME: ""
+      CORE_RPC_PASSWORD: ""
+```
+
+JSON:
+```
+  "ELECTRUM": {
+    "HOST": "127.0.0.1",
+    "PORT": 50002,
+    "TLS_ENABLED": true
+  },
+```
+
+docker-compose overrides:
+```
+      ELECTRUM_HOST: ""
+      ELECTRUM_PORT: ""
+      ELECTRUM_TLS: ""
+```
+
+JSON:
+```
+  "ESPLORA": {
+    "REST_API_URL": "http://127.0.0.1:3000"
+  },
+```
+docker-compose overrides:
+```
+      ESPLORA_REST_API_URL: ""
+```
+
+JSON:
+```
+  "SECOND_CORE_RPC": {
+    "HOST": "127.0.0.1",
+    "PORT": 8332,
+    "USERNAME": "mempool",
+    "PASSWORD": "mempool"
+  },
+```
+
+docker-compose overrides:
+```
+      SECOND_CORE_RPC_HOST: ""
+      SECOND_CORE_RPC_PORT: ""
+      SECOND_CORE_RPC_USERNAME: ""
+      SECOND_CORE_RPC_PASSWORD: ""
+```
+
+JSON:
+```
+  "DATABASE": {
+    "ENABLED": true,
+    "HOST": "127.0.0.1",
+    "PORT": 3306,
+    "DATABASE": "mempool",
+    "USERNAME": "mempool",
+    "PASSWORD": "mempool"
+  },
+```
+
+docker-compose overrides:
+```
+      DATABASE_ENABLED: ""
+      DATABASE_HOST: ""
+      DATABASE_PORT: ""
+      DATABASE_DATABASE: ""
+      DATABASE_USERAME: ""
+      DATABASE_PASSWORD: ""
+```
+
+JSON:
+```
+  "SYSLOG": {
+    "ENABLED": true,
+    "HOST": "127.0.0.1",
+    "PORT": 514,
+    "MIN_PRIORITY": "info",
+    "FACILITY": "local7"
+  },
+```
+
+docker-compose overrides:
+```
+      SYSLOG_ENABLED: ""
+      SYSLOG_HOST: ""
+      SYSLOG_PORT: ""
+      SYSLOG_MIN_PRIORITY: ""
+      SYSLOG_FACILITY: ""
+```
+
+JSON:
+```
+  "STATISTICS": {
+    "ENABLED": true,
+    "TX_PER_SECOND_SAMPLE_PERIOD": 150
+  },
+```
+
+docker-compose overrides:
+```
+      STATISTICS_ENABLED: ""
+      STATISTICS_TX_PER_SECOND_SAMPLE_PERIOD: ""
+```
+
+JSON:
+```
+  "BISQ": {
+    "ENABLED": false,
+    "DATA_PATH": "/bisq/statsnode-data/btc_mainnet/db"
+  }
+```
+
+docker-compose overrides:
+```
+      BISQ_ENABLED: ""
+      BISQ_DATA_PATH: ""
+```
+
+
+# Manual Installation
+
+The following instructions are for a manual installation on Linux or FreeBSD. The file and directory paths may need to be changed to match your OS.
+
+## Dependencies
+
+* [Bitcoin](https://github.com/bitcoin/bitcoin)
+* [Electrum](https://github.com/romanz/electrs)
+* [NodeJS](https://github.com/nodejs/node)
+* [MariaDB](https://github.com/mariadb/server)
+* [Nginx](https://github.com/nginx/nginx)
+
+## Mempool
+
+Clone the mempool repo, and checkout the latest release tag:
+```bash
+  git clone https://github.com/mempool/mempool
+  cd mempool
+  latestrelease=$(curl -s https://api.github.com/repos/mempool/mempool/releases/latest|grep tag_name|head -1|cut -d '"' -f4)
+  git checkout $latestrelease
+```
+
+## Bitcoin Core (bitcoind)
+
+Enable RPC and txindex in `bitcoin.conf`:
+```bash
+  rpcuser=mempool
+  rpcpassword=mempool
+  txindex=1
+```
+
+## MySQL
+
+Install MariaDB from OS package manager:
+```bash
+  # Linux
+  apt-get install mariadb-server mariadb-client
+
+  # macOS
+  brew install mariadb
+  mysql.server start
+```
+
+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)
+```
+
+## Mempool Backend
+Install mempool dependencies from npm and build the backend:
+
+```bash
+  # backend
+  cd backend
+  npm install --prod
+  npm run build
+```
+
+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
+{
+  "MEMPOOL": {
+    "NETWORK": "mainnet",
+    "BACKEND": "electrum",
+    "HTTP_PORT": 8999
+  },
+  "CORE_RPC": {
+    "HOST": "127.0.0.1",
+    "PORT": 8332,
+    "USERNAME": "mempool",
+    "PASSWORD": "mempool"
+  },
+  "ELECTRUM": {
+    "HOST": "127.0.0.1",
+    "PORT": 50002,
+    "TLS_ENABLED": true
+  },
+  "DATABASE": {
+    "ENABLED": true,
+    "HOST": "127.0.0.1",
+    "PORT": 3306,
+    "USERNAME": "mempool",
+    "PASSWORD": "mempool",
+    "DATABASE": "mempool"
+  }
+}
+```
+
+Start the backend:
+
+```bash
+  npm run start
+```
+
+When it's running you should 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
+```
+
+## Mempool Frontend
+
+Install mempool dependencies from npm and build the frontend static HTML/CSS/JS:
+
+```bash
+  # frontend
+  cd frontend
+  npm install --prod
+  npm run build
+```
+
+Install the output into nginx webroot folder:
+
+```bash
+  sudo rsync -av --delete dist/ /var/www/
+```
+
+## nginx + certbot
+
+Install the supplied nginx.conf and nginx-mempool.conf in /etc/nginx
+
+```bash
+  # install nginx and certbot
+  apt-get install -y nginx python3-certbot-nginx
+
+  # install the mempool configuration for nginx
+  cp nginx.conf nginx-mempool.conf /etc/nginx/
+
+  # replace example.com with your domain name
+  certbot --nginx -d example.com
+
+```
+
+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/.dockerignore

@@ -1 +0,0 @@
-Dockerfile

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

@@ -1,10 +1,9 @@
 # See http://help.github.com/ignore-files/ for more about ignoring files.
 
 # production config and external assets
-!mempool-config.template.json
+*.json
 !mempool-config.sample.json
-mempool-config.json
-pools.json
+
 icons.json
 
 # compiled output
@@ -45,6 +44,3 @@ testem.log
 #System Files
 .DS_Store
 Thumbs.db
-
-# package folder (npm run package output)
-/package

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/README.md

@@ -1,256 +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 only provides support for custom setups to project sponsors through [Mempool Enterprise®](https://mempool.space/enterprise).
-
-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._
-
-_The build process requires [Rust](https://www.rust-lang.org/tools/install) to be installed._
-
-Install dependencies with `npm` and build the backend:
-
-```
-cd backend
-npm install --no-install-links # npm@9.4.2 and later can omit the --no-install-links
-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/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

@@ -2,49 +2,25 @@
   "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",
-    "CACHE_ENABLED": true,
     "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,
-    "GOGGLES_INDEXING": false,
+    "PRICE_FEED_UPDATE_INTERVAL": 3600,
     "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,
-    "RUST_GBT": false,
-    "CPFP_INDEXING": false,
-    "DISK_CACHE_BLOCK_INTERVAL": 6,
-    "MAX_PUSH_TX_SIZE_WEIGHT": 4000000,
-    "ALLOW_UNREACHABLE": true,
-    "PRICE_UPDATES_PER_HOUR": 1,
-    "MAX_TRACKED_ADDRESSES": 100
+    "EXTERNAL_ASSETS": []
   },
   "CORE_RPC": {
     "HOST": "127.0.0.1",
     "PORT": 8332,
     "USERNAME": "mempool",
-    "PASSWORD": "mempool",
-    "TIMEOUT": 60000,
-    "COOKIE": false,
-    "COOKIE_PATH": "/path/to/bitcoin/.cookie"
+    "PASSWORD": "mempool"
   },
   "ELECTRUM": {
     "HOST": "127.0.0.1",
@@ -52,33 +28,21 @@
     "TLS_ENABLED": true
   },
   "ESPLORA": {
-    "REST_API_URL": "http://127.0.0.1:3000",
-    "UNIX_SOCKET_PATH": "/tmp/esplora-bitcoin-mainnet",
-    "BATCH_QUERY_BASE_SIZE": 1000,
-    "RETRY_UNIX_SOCKET_AFTER": 30000,
-    "REQUEST_TIMEOUT": 10000,
-    "FALLBACK_TIMEOUT": 5000,
-    "FALLBACK": []
+    "REST_API_URL": "http://127.0.0.1:3000"
   },
   "SECOND_CORE_RPC": {
     "HOST": "127.0.0.1",
     "PORT": 8332,
     "USERNAME": "mempool",
-    "PASSWORD": "mempool",
-    "TIMEOUT": 60000,
-    "COOKIE": false,
-    "COOKIE_PATH": "/path/to/bitcoin/.cookie"
+    "PASSWORD": "mempool"
   },
   "DATABASE": {
     "ENABLED": true,
     "HOST": "127.0.0.1",
     "PORT": 3306,
-    "SOCKET": "/var/run/mysql/mysql.sock",
     "DATABASE": "mempool",
     "USERNAME": "mempool",
-    "PASSWORD": "mempool",
-    "TIMEOUT": 180000,
-    "PID_DIR": ""
+    "PASSWORD": "mempool"
   },
   "SYSLOG": {
     "ENABLED": true,
@@ -91,68 +55,8 @@
     "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",
-    "TIMEOUT": 10000
-  },
-  "CLIGHTNING": {
-    "SOCKET": "lightning-rpc"
-  },
-  "SOCKS5PROXY": {
-    "ENABLED": false,
-    "USE_ONION": true,
-    "HOST": "127.0.0.1",
-    "PORT": 9050,
-    "USERNAME": "",
-    "PASSWORD": ""
-  },
-  "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"
-  },
-  "REDIS": {
-    "ENABLED": false,
-    "UNIX_SOCKET_PATH": "/tmp/redis.sock",
-    "BATCH_QUERY_BASE_SIZE": 5000
-  },
-  "REPLICATION": {
-    "ENABLED": false,
-    "AUDIT": false,
-    "AUDIT_START_HEIGHT": 774000,
-    "SERVERS": [
-      "list",
-      "of",
-      "trusted",
-      "servers"
-    ]
-  },
-  "MEMPOOL_SERVICES": {
-    "API": "https://mempool.space/api",
-    "ACCELERATIONS": false
   }
 }

backend/npm_package.sh

@@ -1,17 +0,0 @@
-#/bin/sh
-set -e
-
-# Remove previous dist folder
-rm -rf dist
-# Build new dist folder
-npm run build
-# Remove previous package folder
-rm -rf package
-# Move JS and deps
-mv dist package
-cp -R node_modules package
-# Remove symlink for rust-gbt and insert real folder
-rm package/node_modules/rust-gbt
-cp -R rust-gbt package/node_modules
-# Clean up deps
-npm run package-rm-build-deps

backend/npm_package_rm_build_deps.sh

@@ -1,12 +0,0 @@
-#/bin/sh
-set -e
-
-# Cleaning up inside the node_modules folder
-cd package/node_modules
-rm -r \
-  typescript \
-  @typescript-eslint \
-  @napi-rs \
-  ./rust-gbt/src \
-  ./rust-gbt/Cargo.toml \
-  ./rust-gbt/build.rs

backend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "mempool-backend",
-  "version": "3.0.0-dev",
+  "version": "2.3.1",
   "description": "Bitcoin mempool visualizer and blockchain explorer backend",
   "license": "GNU Affero General Public License v3.0",
   "homepage": "https://mempool.space",
@@ -16,59 +16,35 @@
     "mempool",
     "blockchain",
     "explorer",
-    "liquid",
-    "lightning"
+    "liquid"
   ],
   "main": "index.ts",
   "scripts": {
-    "tsc": "./node_modules/typescript/bin/tsc -p tsconfig.build.json",
-    "build": "npm run rust-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_package.sh",
-    "package-rm-build-deps": "./npm_package_rm_build_deps.sh",
+    "ng": "./node_modules/@angular/cli/bin/ng",
+    "tsc": "./node_modules/typescript/bin/tsc",
+    "build": "npm run tsc",
     "start": "node --max-old-space-size=2048 dist/index.js",
-    "start-production": "node --max-old-space-size=16384 dist/index.js",
-    "reindex-updated-pools": "npm run start-production --update-pools",
-    "reindex-all-blocks": "npm run start-production --update-pools --reindex-blocks",
-    "test": "./node_modules/.bin/jest --coverage",
-    "test:ci": "CI=true ./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}\"",
-    "rust-clean": "cd rust-gbt && rm -f *.node index.d.ts index.js && rm -rf target && cd ../",
-    "rust-build": "npm run rust-clean && cd rust-gbt && npm run build-release"
+    "start-production": "node --max-old-space-size=4096 dist/index.js",
+    "test": "echo \"Error: no test specified\" && exit 1"
   },
   "dependencies": {
-    "@babel/core": "^7.23.2",
-    "@mempool/electrum-client": "1.1.9",
-    "@types/node": "^18.15.3",
-    "axios": "~1.6.1",
-    "bitcoinjs-lib": "~6.1.3",
-    "crypto-js": "~4.2.0",
-    "express": "~4.18.2",
-    "maxmind": "~4.3.11",
-    "mysql2": "~3.7.0",
-    "rust-gbt": "file:./rust-gbt",
-    "redis": "^4.6.6",
-    "socks-proxy-agent": "~7.0.0",
-    "typescript": "~4.9.3",
-    "ws": "~8.13.0"
+    "@mempool/bitcoin": "^3.0.3",
+    "@mempool/electrum-client": "^1.1.7",
+    "@types/ws": "8.2.2",
+    "axios": "0.24.0",
+    "bitcoinjs-lib": "6.0.1",
+    "crypto-js": "^4.0.0",
+    "express": "^4.17.1",
+    "locutus": "^2.0.12",
+    "mysql2": "2.3.3",
+    "node-worker-threads-pool": "^1.4.3",
+    "typescript": "4.4.4",
+    "ws": "8.3.0"
   },
   "devDependencies": {
-    "@babel/code-frame": "^7.18.6",
-    "@babel/core": "^7.23.2",
-    "@types/compression": "^1.7.2",
-    "@types/crypto-js": "^4.1.1",
-    "@types/express": "^4.17.17",
-    "@types/jest": "^29.5.0",
-    "@types/ws": "~8.5.5",
-    "@typescript-eslint/eslint-plugin": "^5.55.0",
-    "@typescript-eslint/parser": "^5.55.0",
-    "eslint": "^8.36.0",
-    "eslint-config-prettier": "^8.8.0",
-    "jest": "^29.5.0",
-    "prettier": "^3.0.0",
-    "ts-jest": "^29.1.1",
-    "ts-node": "^10.9.1"
+    "@types/compression": "^1.0.1",
+    "@types/express": "^4.17.2",
+    "@types/locutus": "^0.0.6",
+    "tslint": "^6.1.0"
   }
 }

backend/rust-gbt/.gitignore

@@ -1,4 +0,0 @@
-*.node
-**/node_modules
-**/.DS_Store
-npm-debug.log*

backend/rust-gbt/Cargo.toml

@@ -1,25 +0,0 @@
-[package]
-name = "gbt"
-version = "1.0.0"
-description = "An efficient re-implementation of the getBlockTemplate algorithm in Rust"
-authors = ["mononaut"]
-edition = "2021"
-publish = false
-
-[lib]
-crate-type = ["cdylib"]
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]
-priority-queue = "1.3.2"
-bytes = "1.4.0"
-napi = { version = "2.13.2", features = ["napi8", "tokio_rt"] }
-napi-derive = "2.13.0"
-bytemuck = "1.13.1"
-tracing = "0.1.36"
-tracing-log = "0.1.3"
-tracing-subscriber = { version = "0.3.15", features = ["env-filter"]}
-
-[build-dependencies]
-napi-build = "2.0.1"

backend/rust-gbt/README.md

@@ -1,123 +0,0 @@
-# gbt
-
-**gbt:** rust implementation of the getBlockTemplate algorithm
-
-This project was bootstrapped by [napi](https://www.npmjs.com/package/@napi-rs/cli).
-
-## Installing gbt
-
-Installing gbt requires a [supported version of Node and Rust](https://github.com/napi-rs/napi-rs#platform-support).
-
-The build process also requires [Rust](https://www.rust-lang.org/tools/install) to be installed.
-
-You can install the project with npm. In the project directory, run:
-
-```sh
-$ npm install
-```
-
-This fully installs the project, including installing any dependencies and running the build.
-
-## Building gbt
-
-If you have already installed the project and only want to run the build, run:
-
-```sh
-$ npm run build
-```
-
-This command uses the [napi build](https://www.npmjs.com/package/@napi-rs/cli) utility to run the Rust build and copy the built library into `./gbt.[TARGET_TRIPLE].node`.
-
-## Exploring gbt
-
-After building gbt, you can explore its exports at the Node REPL:
-
-```sh
-$ npm install
-$ node
-> require('.').hello()
-"hello node"
-```
-
-## Available Scripts
-
-In the project directory, you can run:
-
-### `npm install`
-
-Installs the project, including running `npm run build-release`.
-
-### `npm build`
-
-Builds the Node addon (`gbt.[TARGET_TRIPLE].node`) from source.
-
-Additional [`cargo build`](https://doc.rust-lang.org/cargo/commands/cargo-build.html) arguments may be passed to `npm build` and `npm build-*` commands. For example, to enable a [cargo feature](https://doc.rust-lang.org/cargo/reference/features.html):
-
-```
-npm run build -- --feature=beetle
-```
-
-#### `npm build-debug`
-
-Alias for `npm build`.
-
-#### `npm build-release`
-
-Same as [`npm build`](#npm-build) but, builds the module with the [`release`](https://doc.rust-lang.org/cargo/reference/profiles.html#release) profile. Release builds will compile slower, but run faster.
-
-### `npm test`
-
-Runs the unit tests by calling `cargo test`. You can learn more about [adding tests to your Rust code](https://doc.rust-lang.org/book/ch11-01-writing-tests.html) from the [Rust book](https://doc.rust-lang.org/book/).
-
-## Project Layout
-
-The directory structure of this project is:
-
-```
-gbt/
-├── Cargo.toml
-├── README.md
-├── gbt.[TARGET_TRIPLE].node
-├── package.json
-├── src/
-|   └── lib.rs
-└── target/
-```
-
-### Cargo.toml
-
-The Cargo [manifest file](https://doc.rust-lang.org/cargo/reference/manifest.html), which informs the `cargo` command.
-
-### README.md
-
-This file.
-
-### gbt.\[TARGET_TRIPLE\].node
-
-The Node addon—i.e., a binary Node module—generated by building the project. This is the main module for this package, as dictated by the `"main"` key in `package.json`.
-
-Under the hood, a [Node addon](https://nodejs.org/api/addons.html) is a [dynamically-linked shared object](https://en.wikipedia.org/wiki/Library_(computing)#Shared_libraries). The `"build"` script produces this file by copying it from within the `target/` directory, which is where the Rust build produces the shared object.
-
-### package.json
-
-The npm [manifest file](https://docs.npmjs.com/cli/v7/configuring-npm/package-json), which informs the `npm` command.
-
-### src/
-
-The directory tree containing the Rust source code for the project.
-
-### src/lib.rs
-
-The Rust library's main module.
-
-### target/
-
-Binary artifacts generated by the Rust build.
-
-## Learn More
-
-To learn more about Neon, see the [Napi-RS documentation](https://napi.rs/docs/introduction/getting-started).
-
-To learn more about Rust, see the [Rust documentation](https://www.rust-lang.org).
-
-To learn more about Node, see the [Node documentation](https://nodejs.org).

backend/rust-gbt/build.rs

@@ -1,3 +0,0 @@
-fn main() {
-    napi_build::setup();
-}

backend/rust-gbt/index.d.ts

@@ -1,50 +0,0 @@
-/* tslint:disable */
-/* eslint-disable */
-
-/* auto-generated by NAPI-RS */
-
-export interface ThreadTransaction {
-  uid: number
-  order: number
-  fee: number
-  weight: number
-  sigops: number
-  effectiveFeePerVsize: number
-  inputs: Array<number>
-}
-export interface ThreadAcceleration {
-  uid: number
-  delta: number
-}
-export class GbtGenerator {
-  constructor()
-  /**
-   * # Errors
-   *
-   * Rejects if the thread panics or if the Mutex is poisoned.
-   */
-  make(mempool: Array<ThreadTransaction>, accelerations: Array<ThreadAcceleration>, maxUid: number): Promise<GbtResult>
-  /**
-   * # Errors
-   *
-   * Rejects if the thread panics or if the Mutex is poisoned.
-   */
-  update(newTxs: Array<ThreadTransaction>, removeTxs: Array<number>, accelerations: Array<ThreadAcceleration>, maxUid: number): Promise<GbtResult>
-}
-/**
- * The result from calling the gbt function.
- *
- * This tuple contains the following:
- *        blocks: A 2D Vector of transaction IDs (u32), the inner Vecs each represent a block.
- * block_weights: A Vector of total weights per block.
- *      clusters: A 2D Vector of transaction IDs representing clusters of dependent mempool transactions
- *         rates: A Vector of tuples containing transaction IDs (u32) and effective fee per vsize (f64)
- */
-export class GbtResult {
-  blocks: Array<Array<number>>
-  blockWeights: Array<number>
-  clusters: Array<Array<number>>
-  rates: Array<Array<number>>
-  overflow: Array<number>
-  constructor(blocks: Array<Array<number>>, blockWeights: Array<number>, clusters: Array<Array<number>>, rates: Array<Array<number>>, overflow: Array<number>)
-}

backend/rust-gbt/index.js

@@ -1,258 +0,0 @@
-/* tslint:disable */
-/* eslint-disable */
-/* prettier-ignore */
-
-/* auto-generated by NAPI-RS */
-
-const { existsSync, readFileSync } = require('fs')
-const { join } = require('path')
-
-const { platform, arch } = process
-
-let nativeBinding = null
-let localFileExisted = false
-let loadError = null
-
-function isMusl() {
-  // For Node 10
-  if (!process.report || typeof process.report.getReport !== 'function') {
-    try {
-      const lddPath = require('child_process').execSync('which ldd').toString().trim()
-      return readFileSync(lddPath, 'utf8').includes('musl')
-    } catch (e) {
-      return true
-    }
-  } else {
-    const { glibcVersionRuntime } = process.report.getReport().header
-    return !glibcVersionRuntime
-  }
-}
-
-switch (platform) {
-  case 'android':
-    switch (arch) {
-      case 'arm64':
-        localFileExisted = existsSync(join(__dirname, 'gbt.android-arm64.node'))
-        try {
-          if (localFileExisted) {
-            nativeBinding = require('./gbt.android-arm64.node')
-          } else {
-            nativeBinding = require('gbt-android-arm64')
-          }
-        } catch (e) {
-          loadError = e
-        }
-        break
-      case 'arm':
-        localFileExisted = existsSync(join(__dirname, 'gbt.android-arm-eabi.node'))
-        try {
-          if (localFileExisted) {
-            nativeBinding = require('./gbt.android-arm-eabi.node')
-          } else {
-            nativeBinding = require('gbt-android-arm-eabi')
-          }
-        } catch (e) {
-          loadError = e
-        }
-        break
-      default:
-        throw new Error(`Unsupported architecture on Android ${arch}`)
-    }
-    break
-  case 'win32':
-    switch (arch) {
-      case 'x64':
-        localFileExisted = existsSync(
-          join(__dirname, 'gbt.win32-x64-msvc.node')
-        )
-        try {
-          if (localFileExisted) {
-            nativeBinding = require('./gbt.win32-x64-msvc.node')
-          } else {
-            nativeBinding = require('gbt-win32-x64-msvc')
-          }
-        } catch (e) {
-          loadError = e
-        }
-        break
-      case 'ia32':
-        localFileExisted = existsSync(
-          join(__dirname, 'gbt.win32-ia32-msvc.node')
-        )
-        try {
-          if (localFileExisted) {
-            nativeBinding = require('./gbt.win32-ia32-msvc.node')
-          } else {
-            nativeBinding = require('gbt-win32-ia32-msvc')
-          }
-        } catch (e) {
-          loadError = e
-        }
-        break
-      case 'arm64':
-        localFileExisted = existsSync(
-          join(__dirname, 'gbt.win32-arm64-msvc.node')
-        )
-        try {
-          if (localFileExisted) {
-            nativeBinding = require('./gbt.win32-arm64-msvc.node')
-          } else {
-            nativeBinding = require('gbt-win32-arm64-msvc')
-          }
-        } catch (e) {
-          loadError = e
-        }
-        break
-      default:
-        throw new Error(`Unsupported architecture on Windows: ${arch}`)
-    }
-    break
-  case 'darwin':
-    localFileExisted = existsSync(join(__dirname, 'gbt.darwin-universal.node'))
-    try {
-      if (localFileExisted) {
-        nativeBinding = require('./gbt.darwin-universal.node')
-      } else {
-        nativeBinding = require('gbt-darwin-universal')
-      }
-      break
-    } catch {}
-    switch (arch) {
-      case 'x64':
-        localFileExisted = existsSync(join(__dirname, 'gbt.darwin-x64.node'))
-        try {
-          if (localFileExisted) {
-            nativeBinding = require('./gbt.darwin-x64.node')
-          } else {
-            nativeBinding = require('gbt-darwin-x64')
-          }
-        } catch (e) {
-          loadError = e
-        }
-        break
-      case 'arm64':
-        localFileExisted = existsSync(
-          join(__dirname, 'gbt.darwin-arm64.node')
-        )
-        try {
-          if (localFileExisted) {
-            nativeBinding = require('./gbt.darwin-arm64.node')
-          } else {
-            nativeBinding = require('gbt-darwin-arm64')
-          }
-        } catch (e) {
-          loadError = e
-        }
-        break
-      default:
-        throw new Error(`Unsupported architecture on macOS: ${arch}`)
-    }
-    break
-  case 'freebsd':
-    if (arch !== 'x64') {
-      throw new Error(`Unsupported architecture on FreeBSD: ${arch}`)
-    }
-    localFileExisted = existsSync(join(__dirname, 'gbt.freebsd-x64.node'))
-    try {
-      if (localFileExisted) {
-        nativeBinding = require('./gbt.freebsd-x64.node')
-      } else {
-        nativeBinding = require('gbt-freebsd-x64')
-      }
-    } catch (e) {
-      loadError = e
-    }
-    break
-  case 'linux':
-    switch (arch) {
-      case 'x64':
-        if (isMusl()) {
-          localFileExisted = existsSync(
-            join(__dirname, 'gbt.linux-x64-musl.node')
-          )
-          try {
-            if (localFileExisted) {
-              nativeBinding = require('./gbt.linux-x64-musl.node')
-            } else {
-              nativeBinding = require('gbt-linux-x64-musl')
-            }
-          } catch (e) {
-            loadError = e
-          }
-        } else {
-          localFileExisted = existsSync(
-            join(__dirname, 'gbt.linux-x64-gnu.node')
-          )
-          try {
-            if (localFileExisted) {
-              nativeBinding = require('./gbt.linux-x64-gnu.node')
-            } else {
-              nativeBinding = require('gbt-linux-x64-gnu')
-            }
-          } catch (e) {
-            loadError = e
-          }
-        }
-        break
-      case 'arm64':
-        if (isMusl()) {
-          localFileExisted = existsSync(
-            join(__dirname, 'gbt.linux-arm64-musl.node')
-          )
-          try {
-            if (localFileExisted) {
-              nativeBinding = require('./gbt.linux-arm64-musl.node')
-            } else {
-              nativeBinding = require('gbt-linux-arm64-musl')
-            }
-          } catch (e) {
-            loadError = e
-          }
-        } else {
-          localFileExisted = existsSync(
-            join(__dirname, 'gbt.linux-arm64-gnu.node')
-          )
-          try {
-            if (localFileExisted) {
-              nativeBinding = require('./gbt.linux-arm64-gnu.node')
-            } else {
-              nativeBinding = require('gbt-linux-arm64-gnu')
-            }
-          } catch (e) {
-            loadError = e
-          }
-        }
-        break
-      case 'arm':
-        localFileExisted = existsSync(
-          join(__dirname, 'gbt.linux-arm-gnueabihf.node')
-        )
-        try {
-          if (localFileExisted) {
-            nativeBinding = require('./gbt.linux-arm-gnueabihf.node')
-          } else {
-            nativeBinding = require('gbt-linux-arm-gnueabihf')
-          }
-        } catch (e) {
-          loadError = e
-        }
-        break
-      default:
-        throw new Error(`Unsupported architecture on Linux: ${arch}`)
-    }
-    break
-  default:
-    throw new Error(`Unsupported OS: ${platform}, architecture: ${arch}`)
-}
-
-if (!nativeBinding) {
-  if (loadError) {
-    throw loadError
-  }
-  throw new Error(`Failed to load native binding`)
-}
-
-const { GbtGenerator, GbtResult } = nativeBinding
-
-module.exports.GbtGenerator = GbtGenerator
-module.exports.GbtResult = GbtResult

backend/rust-gbt/package-lock.json

@@ -1,34 +0,0 @@
-{
-  "name": "gbt",
-  "version": "3.0.1",
-  "lockfileVersion": 3,
-  "requires": true,
-  "packages": {
-    "": {
-      "name": "gbt",
-      "version": "3.0.1",
-      "hasInstallScript": true,
-      "dependencies": {
-        "@napi-rs/cli": "2.16.1"
-      },
-      "engines": {
-        "node": ">= 12"
-      }
-    },
-    "node_modules/@napi-rs/cli": {
-      "version": "2.16.1",
-      "resolved": "https://registry.npmjs.org/@napi-rs/cli/-/cli-2.16.1.tgz",
-      "integrity": "sha512-L0Gr5iEQIDEbvWdDr1HUaBOxBSHL1VZhWSk1oryawoT8qJIY+KGfLFelU+Qma64ivCPbxYpkfPoKYVG3rcoGIA==",
-      "bin": {
-        "napi": "scripts/index.js"
-      },
-      "engines": {
-        "node": ">= 10"
-      },
-      "funding": {
-        "type": "github",
-        "url": "https://github.com/sponsors/Brooooooklyn"
-      }
-    }
-  }
-}

backend/rust-gbt/package.json

@@ -1,33 +0,0 @@
-{
-  "name": "gbt",
-  "version": "3.0.1",
-  "description": "An efficient re-implementation of the getBlockTemplate algorithm in Rust",
-  "main": "index.js",
-  "types": "index.d.ts",
-  "scripts": {
-    "artifacts": "napi artifacts",
-    "build": "napi build --platform",
-    "build-debug": "npm run build",
-    "build-release": "npm run build -- --release --strip",
-    "install": "npm run build-release",
-    "prepublishOnly": "napi prepublish -t npm",
-    "test": "cargo test"
-  },
-  "author": "mononaut",
-  "napi": {
-    "name": "gbt",
-    "triples": {
-      "defaults": false,
-      "additional": [
-        "x86_64-unknown-linux-gnu",
-        "x86_64-unknown-freebsd"
-      ]
-    }
-  },
-  "dependencies": {
-    "@napi-rs/cli": "2.16.1"
-  },
-  "engines": {
-    "node": ">= 12"
-  }
-}

backend/rust-gbt/src/audit_transaction.rs

@@ -1,225 +0,0 @@
-use crate::{
-    u32_hasher_types::{u32hashset_new, U32HasherState},
-    ThreadTransaction, thread_acceleration::ThreadAcceleration,
-};
-use std::{
-    cmp::Ordering,
-    collections::HashSet,
-    hash::{Hash, Hasher},
-};
-
-#[allow(clippy::struct_excessive_bools)]
-#[derive(Clone, Debug)]
-pub struct AuditTransaction {
-    pub uid: u32,
-    order: u32,
-    pub fee: u64,
-    pub weight: u32,
-    // exact sigop-adjusted weight
-    pub sigop_adjusted_weight: u32,
-    // sigop-adjusted vsize rounded up the the next integer
-    pub sigop_adjusted_vsize: u32,
-    pub sigops: u32,
-    adjusted_fee_per_vsize: f64,
-    pub effective_fee_per_vsize: f64,
-    pub dependency_rate: f64,
-    pub inputs: Vec<u32>,
-    pub relatives_set_flag: bool,
-    pub ancestors: HashSet<u32, U32HasherState>,
-    pub children: HashSet<u32, U32HasherState>,
-    ancestor_fee: u64,
-    ancestor_sigop_adjusted_weight: u32,
-    ancestor_sigop_adjusted_vsize: u32,
-    ancestor_sigops: u32,
-    // Safety: Must be private to prevent NaN breaking Ord impl.
-    score: f64,
-    pub used: bool,
-    /// whether this transaction has been moved to the "modified" priority queue
-    pub modified: bool,
-    pub dirty: bool,
-}
-
-impl Hash for AuditTransaction {
-    fn hash<H: Hasher>(&self, state: &mut H) {
-        self.uid.hash(state);
-    }
-}
-
-impl PartialEq for AuditTransaction {
-    fn eq(&self, other: &Self) -> bool {
-        self.uid == other.uid
-    }
-}
-
-impl Eq for AuditTransaction {}
-
-#[inline]
-pub fn partial_cmp_uid_score(a: (u32, u32, f64), b: (u32, u32, f64)) -> Option<Ordering> {
-    // If either score is NaN, this is false,
-    // and partial_cmp will return None
-    if a.2 != b.2 {
-        // compare by score (sorts by ascending score)
-        a.2.partial_cmp(&b.2)
-    } else if a.1 != b.1 {
-        // tie-break by comparing partial txids (sorts by descending txid)
-        Some(b.1.cmp(&a.1))
-    } else {
-        // tie-break partial txid collisions by comparing uids (sorts by descending uid)
-        Some(b.0.cmp(&a.0))
-    }
-}
-
-impl PartialOrd for AuditTransaction {
-    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
-        partial_cmp_uid_score(
-            (self.uid, self.order, self.score),
-            (other.uid, other.order, other.score),
-        )
-    }
-}
-
-impl Ord for AuditTransaction {
-    fn cmp(&self, other: &Self) -> Ordering {
-        // Safety: The only possible values for score are f64
-        // that are not NaN. This is because outside code can not
-        // freely assign score. Also, calc_new_score guarantees no NaN.
-        self.partial_cmp(other).expect("score will never be NaN")
-    }
-}
-
-#[inline]
-fn calc_fee_rate(fee: u64, vsize: f64) -> f64 {
-    (fee as f64) / (if vsize == 0.0 { 1.0 } else { vsize })
-}
-
-impl AuditTransaction {
-    pub fn from_thread_transaction(tx: &ThreadTransaction, maybe_acceleration: Option<Option<&ThreadAcceleration>>) -> Self {
-        let fee_delta = match maybe_acceleration {
-            Some(Some(acceleration)) => acceleration.delta,
-            _ => 0.0
-        };
-        let fee = (tx.fee as u64) + (fee_delta as u64);
-        // rounded up to the nearest integer
-        let is_adjusted = tx.weight < (tx.sigops * 20);
-        let sigop_adjusted_vsize = ((tx.weight + 3) / 4).max(tx.sigops * 5);
-        let sigop_adjusted_weight = tx.weight.max(tx.sigops * 20);
-        let effective_fee_per_vsize = if is_adjusted || fee_delta > 0.0 {
-            calc_fee_rate(fee, f64::from(sigop_adjusted_weight) / 4.0)
-        } else {
-            tx.effective_fee_per_vsize
-        };
-        Self {
-            uid: tx.uid,
-            order: tx.order,
-            fee,
-            weight: tx.weight,
-            sigop_adjusted_weight,
-            sigop_adjusted_vsize,
-            sigops: tx.sigops,
-            adjusted_fee_per_vsize: calc_fee_rate(fee, f64::from(sigop_adjusted_vsize)),
-            effective_fee_per_vsize,
-            dependency_rate: f64::INFINITY,
-            inputs: tx.inputs.clone(),
-            relatives_set_flag: false,
-            ancestors: u32hashset_new(),
-            children: u32hashset_new(),
-            ancestor_fee: fee,
-            ancestor_sigop_adjusted_weight: sigop_adjusted_weight,
-            ancestor_sigop_adjusted_vsize: sigop_adjusted_vsize,
-            ancestor_sigops: tx.sigops,
-            score: 0.0,
-            used: false,
-            modified: false,
-            dirty: effective_fee_per_vsize != tx.effective_fee_per_vsize || fee_delta > 0.0,
-        }
-    }
-
-    #[inline]
-    pub const fn score(&self) -> f64 {
-        self.score
-    }
-
-    #[inline]
-    pub const fn order(&self) -> u32 {
-        self.order
-    }
-
-    #[inline]
-    pub const fn ancestor_sigop_adjusted_vsize(&self) -> u32 {
-        self.ancestor_sigop_adjusted_vsize
-    }
-
-    #[inline]
-    pub const fn ancestor_sigops(&self) -> u32 {
-        self.ancestor_sigops
-    }
-
-    #[inline]
-    pub fn cluster_rate(&self) -> f64 {
-        // Safety: self.ancestor_weight can never be 0.
-        // Even if it could, as it approaches 0, the value inside the min() call
-        // grows, so if we think of 0 as "grew infinitely" then dependency_rate would be
-        // the smaller of the two. If either side is NaN, the other side is returned.
-        self.dependency_rate.min(calc_fee_rate(
-            self.ancestor_fee,
-            f64::from(self.ancestor_sigop_adjusted_weight) / 4.0,
-        ))
-    }
-
-    pub fn set_dirty_if_different(&mut self, cluster_rate: f64) {
-        if self.effective_fee_per_vsize != cluster_rate {
-            self.effective_fee_per_vsize = cluster_rate;
-            self.dirty = true;
-        }
-    }
-
-    /// Safety: This function must NEVER set score to NaN.
-    #[inline]
-    fn calc_new_score(&mut self) {
-        self.score = self.adjusted_fee_per_vsize.min(calc_fee_rate(
-            self.ancestor_fee,
-            f64::from(self.ancestor_sigop_adjusted_vsize),
-        ));
-    }
-
-    #[inline]
-    pub fn set_ancestors(
-        &mut self,
-        ancestors: HashSet<u32, U32HasherState>,
-        total_fee: u64,
-        total_sigop_adjusted_weight: u32,
-        total_sigop_adjusted_vsize: u32,
-        total_sigops: u32,
-    ) {
-        self.ancestors = ancestors;
-        self.ancestor_fee = self.fee + total_fee;
-        self.ancestor_sigop_adjusted_weight =
-            self.sigop_adjusted_weight + total_sigop_adjusted_weight;
-        self.ancestor_sigop_adjusted_vsize = self.sigop_adjusted_vsize + total_sigop_adjusted_vsize;
-        self.ancestor_sigops = self.sigops + total_sigops;
-        self.calc_new_score();
-        self.relatives_set_flag = true;
-    }
-
-    #[inline]
-    pub fn remove_root(
-        &mut self,
-        root_txid: u32,
-        root_fee: u64,
-        root_sigop_adjusted_weight: u32,
-        root_sigop_adjusted_vsize: u32,
-        root_sigops: u32,
-        cluster_rate: f64,
-    ) -> f64 {
-        let old_score = self.score();
-        self.dependency_rate = self.dependency_rate.min(cluster_rate);
-        if self.ancestors.remove(&root_txid) {
-            self.ancestor_fee -= root_fee;
-            self.ancestor_sigop_adjusted_weight -= root_sigop_adjusted_weight;
-            self.ancestor_sigop_adjusted_vsize -= root_sigop_adjusted_vsize;
-            self.ancestor_sigops -= root_sigops;
-            self.calc_new_score();
-        }
-        old_score
-    }
-}

backend/rust-gbt/src/gbt.rs

@@ -1,437 +0,0 @@
-use priority_queue::PriorityQueue;
-use std::{cmp::Ordering, collections::HashSet, mem::ManuallyDrop};
-use tracing::{info, trace};
-
-use crate::{
-    audit_transaction::{partial_cmp_uid_score, AuditTransaction},
-    u32_hasher_types::{u32hashset_new, u32priority_queue_with_capacity, U32HasherState},
-    GbtResult, ThreadTransactionsMap, thread_acceleration::ThreadAcceleration,
-};
-
-const MAX_BLOCK_WEIGHT_UNITS: u32 = 4_000_000 - 4_000;
-const BLOCK_SIGOPS: u32 = 80_000;
-const BLOCK_RESERVED_WEIGHT: u32 = 4_000;
-const BLOCK_RESERVED_SIGOPS: u32 = 400;
-const MAX_BLOCKS: usize = 8;
-
-type AuditPool = Vec<Option<ManuallyDrop<AuditTransaction>>>;
-type ModifiedQueue = PriorityQueue<u32, TxPriority, U32HasherState>;
-
-#[derive(Debug)]
-struct TxPriority {
-    uid: u32,
-    order: u32,
-    score: f64,
-}
-impl PartialEq for TxPriority {
-    fn eq(&self, other: &Self) -> bool {
-        self.uid == other.uid
-    }
-}
-impl Eq for TxPriority {}
-impl PartialOrd for TxPriority {
-    fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
-        partial_cmp_uid_score(
-            (self.uid, self.order, self.score),
-            (other.uid, other.order, other.score),
-        )
-    }
-}
-impl Ord for TxPriority {
-    fn cmp(&self, other: &Self) -> Ordering {
-        self.partial_cmp(other).expect("score will never be NaN")
-    }
-}
-
-/// Build projected mempool blocks using an approximation of the transaction selection algorithm from Bitcoin Core.
-///
-/// See `BlockAssembler` in Bitcoin Core's
-/// [miner.cpp](https://github.com/bitcoin/bitcoin/blob/master/src/node/miner.cpp).
-/// Ported from mempool backend's
-/// [tx-selection-worker.ts](https://github.com/mempool/mempool/blob/master/backend/src/api/tx-selection-worker.ts).
-//
-// TODO: Make gbt smaller to fix these lints.
-#[allow(clippy::too_many_lines)]
-#[allow(clippy::cognitive_complexity)]
-pub fn gbt(mempool: &mut ThreadTransactionsMap, accelerations: &[ThreadAcceleration], max_uid: usize) -> GbtResult {
-    let mut indexed_accelerations = Vec::with_capacity(max_uid + 1);
-    indexed_accelerations.resize(max_uid + 1, None);
-    for acceleration in accelerations {
-        indexed_accelerations[acceleration.uid as usize] = Some(acceleration);
-    }
-
-    info!("Initializing working vecs with uid capacity for {}", max_uid + 1);
-    let mempool_len = mempool.len();
-    let mut audit_pool: AuditPool = Vec::with_capacity(max_uid + 1);
-    audit_pool.resize(max_uid + 1, None);
-    let mut mempool_stack: Vec<u32> = Vec::with_capacity(mempool_len);
-    let mut clusters: Vec<Vec<u32>> = Vec::new();
-    let mut block_weights: Vec<u32> = Vec::new();
-
-    info!("Initializing working structs");
-    for (uid, tx) in &mut *mempool {
-        let acceleration = indexed_accelerations.get(*uid as usize);
-        let audit_tx = AuditTransaction::from_thread_transaction(tx, acceleration.copied());
-        // Safety: audit_pool and mempool_stack must always contain the same transactions
-        audit_pool[*uid as usize] = Some(ManuallyDrop::new(audit_tx));
-        mempool_stack.push(*uid);
-    }
-
-    info!("Building relatives graph & calculate ancestor scores");
-    for txid in &mempool_stack {
-        set_relatives(*txid, &mut audit_pool);
-    }
-    trace!("Post relative graph Audit Pool: {:#?}", audit_pool);
-
-    info!("Sorting by descending ancestor score");
-    let mut mempool_stack: Vec<(u32, u32, f64)> = mempool_stack
-        .into_iter()
-        .map(|txid| {
-            let atx = audit_pool
-                .get(txid as usize)
-                .and_then(Option::as_ref)
-                .expect("All txids are from audit_pool");
-            (txid, atx.order(), atx.score())
-        })
-        .collect();
-    mempool_stack.sort_unstable_by(|a, b| partial_cmp_uid_score(*a, *b).expect("Not NaN"));
-    let mut mempool_stack: Vec<u32> = mempool_stack.into_iter().map(|(txid, _, _)| txid).collect();
-
-    info!("Building blocks by greedily choosing the highest feerate package");
-    info!("(i.e. the package rooted in the transaction with the best ancestor score)");
-    let mut blocks: Vec<Vec<u32>> = Vec::new();
-    let mut block_weight: u32 = BLOCK_RESERVED_WEIGHT;
-    let mut block_sigops: u32 = BLOCK_RESERVED_SIGOPS;
-    // No need to be bigger than 4096 transactions for the per-block transaction Vec.
-    let initial_txes_per_block: usize = 4096.min(mempool_len);
-    let mut transactions: Vec<u32> = Vec::with_capacity(initial_txes_per_block);
-    let mut modified: ModifiedQueue = u32priority_queue_with_capacity(mempool_len);
-    let mut overflow: Vec<u32> = Vec::new();
-    let mut failures = 0;
-    while !mempool_stack.is_empty() || !modified.is_empty() {
-        // This trace log storm is big, so to make scrolling through
-        // Each iteration easier, leaving a bunch of empty rows
-        // And a header of ======
-        trace!("\n\n\n\n\n\n\n\n\n\n==================================");
-        trace!("mempool_array: {:#?}", mempool_stack);
-        trace!("clusters: {:#?}", clusters);
-        trace!("modified: {:#?}", modified);
-        trace!("audit_pool: {:#?}", audit_pool);
-        trace!("blocks: {:#?}", blocks);
-        trace!("block_weight: {:#?}", block_weight);
-        trace!("block_sigops: {:#?}", block_sigops);
-        trace!("transactions: {:#?}", transactions);
-        trace!("overflow: {:#?}", overflow);
-        trace!("failures: {:#?}", failures);
-        trace!("\n==================================");
-
-        let next_from_stack = next_valid_from_stack(&mut mempool_stack, &audit_pool);
-        let next_from_queue = next_valid_from_queue(&mut modified, &audit_pool);
-        if next_from_stack.is_none() && next_from_queue.is_none() {
-            info!("No transactions left! {:#?} in overflow", overflow.len());
-        } else {
-            let (next_tx, from_stack) = match (next_from_stack, next_from_queue) {
-                (Some(stack_tx), Some(queue_tx)) => match queue_tx.cmp(stack_tx) {
-                    std::cmp::Ordering::Less => (stack_tx, true),
-                    _ => (queue_tx, false),
-                },
-                (Some(stack_tx), None) => (stack_tx, true),
-                (None, Some(queue_tx)) => (queue_tx, false),
-                (None, None) => unreachable!(),
-            };
-
-            if from_stack {
-                mempool_stack.pop();
-            } else {
-                modified.pop();
-            }
-
-            if blocks.len() < (MAX_BLOCKS - 1)
-                && ((block_weight + (4 * next_tx.ancestor_sigop_adjusted_vsize())
-                    >= MAX_BLOCK_WEIGHT_UNITS)
-                    || (block_sigops + next_tx.ancestor_sigops() > BLOCK_SIGOPS))
-            {
-                // hold this package in an overflow list while we check for smaller options
-                overflow.push(next_tx.uid);
-                failures += 1;
-            } else {
-                let mut package: Vec<(u32, u32, usize)> = Vec::new();
-                let mut cluster: Vec<u32> = Vec::new();
-                let is_cluster: bool = !next_tx.ancestors.is_empty();
-                for ancestor_id in &next_tx.ancestors {
-                    if let Some(Some(ancestor)) = audit_pool.get(*ancestor_id as usize) {
-                        package.push((*ancestor_id, ancestor.order(), ancestor.ancestors.len()));
-                    }
-                }
-                package.sort_unstable_by(|a, b| -> Ordering {
-                    if a.2 != b.2 {
-                        // order by ascending ancestor count
-                        a.2.cmp(&b.2)
-                    } else if a.1 != b.1 {
-                        // tie-break by ascending partial txid
-                        a.1.cmp(&b.1)
-                    } else {
-                        // tie-break partial txid collisions by ascending uid
-                        a.0.cmp(&b.0)
-                    }
-                });
-                package.push((next_tx.uid, next_tx.order(), next_tx.ancestors.len()));
-
-                let cluster_rate = next_tx.cluster_rate();
-
-                for (txid, _, _) in &package {
-                    cluster.push(*txid);
-                    if let Some(Some(tx)) = audit_pool.get_mut(*txid as usize) {
-                        tx.used = true;
-                        tx.set_dirty_if_different(cluster_rate);
-                        transactions.push(tx.uid);
-                        block_weight += tx.weight;
-                        block_sigops += tx.sigops;
-                    }
-                    update_descendants(*txid, &mut audit_pool, &mut modified, cluster_rate);
-                }
-
-                if is_cluster {
-                    clusters.push(cluster);
-                }
-
-                failures = 0;
-            }
-        }
-
-        // this block is full
-        let exceeded_package_tries =
-            failures > 1000 && block_weight > (MAX_BLOCK_WEIGHT_UNITS - BLOCK_RESERVED_WEIGHT);
-        let queue_is_empty = mempool_stack.is_empty() && modified.is_empty();
-        if (exceeded_package_tries || queue_is_empty) && blocks.len() < (MAX_BLOCKS - 1) {
-            // finalize this block
-            if transactions.is_empty() {
-                info!("trying to push an empty block! breaking loop! mempool {:#?} | modified {:#?} | overflow {:#?}", mempool_stack.len(), modified.len(), overflow.len());
-                break;
-            }
-
-            blocks.push(transactions);
-            block_weights.push(block_weight);
-
-            // reset for the next block
-            transactions = Vec::with_capacity(initial_txes_per_block);
-            block_weight = BLOCK_RESERVED_WEIGHT;
-            block_sigops = BLOCK_RESERVED_SIGOPS;
-            failures = 0;
-            // 'overflow' packages didn't fit in this block, but are valid candidates for the next
-            overflow.reverse();
-            for overflowed in &overflow {
-                if let Some(Some(overflowed_tx)) = audit_pool.get(*overflowed as usize) {
-                    if overflowed_tx.modified {
-                        modified.push(
-                            *overflowed,
-                            TxPriority {
-                                uid: *overflowed,
-                                order: overflowed_tx.order(),
-                                score: overflowed_tx.score(),
-                            },
-                        );
-                    } else {
-                        mempool_stack.push(*overflowed);
-                    }
-                }
-            }
-            overflow = Vec::new();
-        }
-    }
-    info!("add the final unbounded block if it contains any transactions");
-    if !transactions.is_empty() {
-        blocks.push(transactions);
-        block_weights.push(block_weight);
-    }
-
-    info!("make a list of dirty transactions and their new rates");
-    let mut rates: Vec<Vec<f64>> = Vec::new();
-    for (uid, thread_tx) in mempool {
-        // Takes ownership of the audit_tx and replaces with None
-        if let Some(Some(audit_tx)) = audit_pool.get_mut(*uid as usize).map(Option::take) {
-            trace!("txid: {}, is_dirty: {}", uid, audit_tx.dirty);
-            if audit_tx.dirty {
-                rates.push(vec![f64::from(*uid), audit_tx.effective_fee_per_vsize]);
-                thread_tx.effective_fee_per_vsize = audit_tx.effective_fee_per_vsize;
-            }
-            // Drops the AuditTransaction manually
-            // There are no audit_txs that are not in the mempool HashMap
-            // So there is guaranteed to be no memory leaks.
-            ManuallyDrop::into_inner(audit_tx);
-        }
-    }
-    trace!("\n\n\n\n\n====================");
-    trace!("blocks: {:#?}", blocks);
-    trace!("clusters: {:#?}", clusters);
-    trace!("rates: {:#?}\n====================\n\n\n\n\n", rates);
-
-    GbtResult {
-        blocks,
-        block_weights,
-        clusters,
-        rates,
-        overflow,
-    }
-}
-
-fn next_valid_from_stack<'a>(
-    mempool_stack: &mut Vec<u32>,
-    audit_pool: &'a AuditPool,
-) -> Option<&'a AuditTransaction> {
-    while let Some(next_txid) = mempool_stack.last() {
-        match audit_pool.get(*next_txid as usize) {
-            Some(Some(tx)) if !tx.used && !tx.modified => {
-                return Some(tx);
-            }
-            _ => {
-                mempool_stack.pop();
-            }
-        }
-    }
-    None
-}
-
-fn next_valid_from_queue<'a>(
-    queue: &mut ModifiedQueue,
-    audit_pool: &'a AuditPool,
-) -> Option<&'a AuditTransaction> {
-    while let Some((next_txid, _)) = queue.peek() {
-        match audit_pool.get(*next_txid as usize) {
-            Some(Some(tx)) if !tx.used => {
-                return Some(tx);
-            }
-            _ => {
-                queue.pop();
-            }
-        }
-    }
-    None
-}
-
-fn set_relatives(txid: u32, audit_pool: &mut AuditPool) {
-    let mut parents: HashSet<u32, U32HasherState> = u32hashset_new();
-    if let Some(Some(tx)) = audit_pool.get(txid as usize) {
-        if tx.relatives_set_flag {
-            return;
-        }
-        for input in &tx.inputs {
-            parents.insert(*input);
-        }
-    } else {
-        return;
-    }
-
-    let mut ancestors: HashSet<u32, U32HasherState> = u32hashset_new();
-    for parent_id in &parents {
-        set_relatives(*parent_id, audit_pool);
-
-        if let Some(Some(parent)) = audit_pool.get_mut(*parent_id as usize) {
-            // Safety: ancestors must always contain only txes in audit_pool
-            ancestors.insert(*parent_id);
-            parent.children.insert(txid);
-            for ancestor in &parent.ancestors {
-                ancestors.insert(*ancestor);
-            }
-        }
-    }
-
-    let mut total_fee: u64 = 0;
-    let mut total_sigop_adjusted_weight: u32 = 0;
-    let mut total_sigop_adjusted_vsize: u32 = 0;
-    let mut total_sigops: u32 = 0;
-
-    for ancestor_id in &ancestors {
-        if let Some(ancestor) = audit_pool
-            .get(*ancestor_id as usize)
-            .expect("audit_pool contains all ancestors")
-        {
-            total_fee += ancestor.fee;
-            total_sigop_adjusted_weight += ancestor.sigop_adjusted_weight;
-            total_sigop_adjusted_vsize += ancestor.sigop_adjusted_vsize;
-            total_sigops += ancestor.sigops;
-        } else { todo!() };
-    }
-
-    if let Some(Some(tx)) = audit_pool.get_mut(txid as usize) {
-        tx.set_ancestors(
-            ancestors,
-            total_fee,
-            total_sigop_adjusted_weight,
-            total_sigop_adjusted_vsize,
-            total_sigops,
-        );
-    }
-}
-
-// iterate over remaining descendants, removing the root as a valid ancestor & updating the ancestor score
-fn update_descendants(
-    root_txid: u32,
-    audit_pool: &mut AuditPool,
-    modified: &mut ModifiedQueue,
-    cluster_rate: f64,
-) {
-    let mut visited: HashSet<u32, U32HasherState> = u32hashset_new();
-    let mut descendant_stack: Vec<u32> = Vec::new();
-    let root_fee: u64;
-    let root_sigop_adjusted_weight: u32;
-    let root_sigop_adjusted_vsize: u32;
-    let root_sigops: u32;
-    if let Some(Some(root_tx)) = audit_pool.get(root_txid as usize) {
-        for descendant_id in &root_tx.children {
-            if !visited.contains(descendant_id) {
-                descendant_stack.push(*descendant_id);
-                visited.insert(*descendant_id);
-            }
-        }
-        root_fee = root_tx.fee;
-        root_sigop_adjusted_weight = root_tx.sigop_adjusted_weight;
-        root_sigop_adjusted_vsize = root_tx.sigop_adjusted_vsize;
-        root_sigops = root_tx.sigops;
-    } else {
-        return;
-    }
-    while let Some(next_txid) = descendant_stack.pop() {
-        if let Some(Some(descendant)) = audit_pool.get_mut(next_txid as usize) {
-            // remove root tx as ancestor
-            let old_score = descendant.remove_root(
-                root_txid,
-                root_fee,
-                root_sigop_adjusted_weight,
-                root_sigop_adjusted_vsize,
-                root_sigops,
-                cluster_rate,
-            );
-            // add to priority queue or update priority if score has changed
-            if descendant.score() < old_score {
-                descendant.modified = true;
-                modified.push_decrease(
-                    descendant.uid,
-                    TxPriority {
-                        uid: descendant.uid,
-                        order: descendant.order(),
-                        score: descendant.score(),
-                    },
-                );
-            } else if descendant.score() > old_score {
-                descendant.modified = true;
-                modified.push_increase(
-                    descendant.uid,
-                    TxPriority {
-                        uid: descendant.uid,
-                        order: descendant.order(),
-                        score: descendant.score(),
-                    },
-                );
-            }
-
-            // add this node's children to the stack
-            for child_id in &descendant.children {
-                if !visited.contains(child_id) {
-                    descendant_stack.push(*child_id);
-                    visited.insert(*child_id);
-                }
-            }
-        }
-    }
-}

backend/rust-gbt/src/lib.rs

@@ -1,184 +0,0 @@
-#![warn(clippy::all)]
-#![warn(clippy::pedantic)]
-#![warn(clippy::nursery)]
-#![allow(clippy::cast_precision_loss)]
-#![allow(clippy::cast_possible_truncation)]
-#![allow(clippy::cast_sign_loss)]
-#![allow(clippy::float_cmp)]
-
-use napi::bindgen_prelude::Result;
-use napi_derive::napi;
-use thread_transaction::ThreadTransaction;
-use thread_acceleration::ThreadAcceleration;
-use tracing::{debug, info, trace};
-use tracing_log::LogTracer;
-use tracing_subscriber::{EnvFilter, FmtSubscriber};
-
-use std::collections::HashMap;
-use std::sync::{Arc, Mutex};
-
-mod audit_transaction;
-mod gbt;
-mod thread_transaction;
-mod thread_acceleration;
-mod u32_hasher_types;
-
-use u32_hasher_types::{u32hashmap_with_capacity, U32HasherState};
-
-/// This is the initial capacity of the `GbtGenerator` struct's inner `HashMap`.
-///
-/// Note: This doesn't *have* to be a power of 2. (uwu)
-const STARTING_CAPACITY: usize = 1_048_576;
-
-type ThreadTransactionsMap = HashMap<u32, ThreadTransaction, U32HasherState>;
-
-#[napi]
-pub struct GbtGenerator {
-    thread_transactions: Arc<Mutex<ThreadTransactionsMap>>,
-}
-
-#[napi::module_init]
-fn init() {
-    // Set all `tracing` logs to print to STDOUT
-    // Note: Passing RUST_LOG env variable to the node process
-    //       will change the log level for the rust module.
-    tracing::subscriber::set_global_default(
-        FmtSubscriber::builder()
-            .with_env_filter(EnvFilter::from_default_env())
-            .with_ansi(
-                // Default to no-color logs.
-                // Setting RUST_LOG_COLOR to 1 or true|TRUE|True etc.
-                // will enable color
-                std::env::var("RUST_LOG_COLOR")
-                    .map(|s| ["1", "true"].contains(&&*s.to_lowercase()))
-                    .unwrap_or(false),
-            )
-            .finish(),
-    )
-    .expect("Logging subscriber failed");
-    // Convert all `log` logs into `tracing` events
-    LogTracer::init().expect("Legacy log subscriber failed");
-}
-
-#[napi]
-impl GbtGenerator {
-    #[napi(constructor)]
-    #[allow(clippy::new_without_default)]
-    #[must_use]
-    pub fn new() -> Self {
-        debug!("Created new GbtGenerator");
-        Self {
-            thread_transactions: Arc::new(Mutex::new(u32hashmap_with_capacity(STARTING_CAPACITY))),
-        }
-    }
-
-    /// # Errors
-    ///
-    /// Rejects if the thread panics or if the Mutex is poisoned.
-    #[napi]
-    pub async fn make(&self, mempool: Vec<ThreadTransaction>, accelerations: Vec<ThreadAcceleration>, max_uid: u32) -> Result<GbtResult> {
-        trace!("make: Current State {:#?}", self.thread_transactions);
-        run_task(
-            Arc::clone(&self.thread_transactions),
-            accelerations,
-            max_uid as usize,
-            move |map| {
-                for tx in mempool {
-                    map.insert(tx.uid, tx);
-                }
-            },
-        )
-        .await
-    }
-
-    /// # Errors
-    ///
-    /// Rejects if the thread panics or if the Mutex is poisoned.
-    #[napi]
-    pub async fn update(
-        &self,
-        new_txs: Vec<ThreadTransaction>,
-        remove_txs: Vec<u32>,
-        accelerations: Vec<ThreadAcceleration>,
-        max_uid: u32,
-    ) -> Result<GbtResult> {
-        trace!("update: Current State {:#?}", self.thread_transactions);
-        run_task(
-            Arc::clone(&self.thread_transactions),
-            accelerations,
-            max_uid as usize,
-            move |map| {
-                for tx in new_txs {
-                    map.insert(tx.uid, tx);
-                }
-                for txid in &remove_txs {
-                    map.remove(txid);
-                }
-            },
-        )
-        .await
-    }
-}
-
-/// The result from calling the gbt function.
-///
-/// This tuple contains the following:
-///        blocks: A 2D Vector of transaction IDs (u32), the inner Vecs each represent a block.
-/// block_weights: A Vector of total weights per block.
-///      clusters: A 2D Vector of transaction IDs representing clusters of dependent mempool transactions
-///         rates: A Vector of tuples containing transaction IDs (u32) and effective fee per vsize (f64)
-#[napi(constructor)]
-pub struct GbtResult {
-    pub blocks: Vec<Vec<u32>>,
-    pub block_weights: Vec<u32>,
-    pub clusters: Vec<Vec<u32>>,
-    pub rates: Vec<Vec<f64>>, // Tuples not supported. u32 fits inside f64
-    pub overflow: Vec<u32>,
-}
-
-/// All on another thread, this runs an arbitrary task in between
-/// taking the lock and running gbt.
-///
-/// Rather than filling / updating the `HashMap` on the main thread,
-/// this allows for `HashMap` modifying tasks to be run before running and returning gbt results.
-///
-/// `thread_transactions` is a cloned `Arc` of the `Mutex` for the `HashMap` state.
-/// `callback` is a `'static + Send` `FnOnce` closure/function that takes a mutable reference
-/// to the `HashMap` as the only argument. (A move closure is recommended to meet the bounds)
-async fn run_task<F>(
-    thread_transactions: Arc<Mutex<ThreadTransactionsMap>>,
-    accelerations: Vec<ThreadAcceleration>,
-    max_uid: usize,
-    callback: F,
-) -> Result<GbtResult>
-where
-    F: FnOnce(&mut ThreadTransactionsMap) + Send + 'static,
-{
-    debug!("Spawning thread...");
-    let handle = napi::tokio::task::spawn_blocking(move || {
-        debug!(
-            "Getting lock for thread_transactions from thread {:?}...",
-            std::thread::current().id()
-        );
-        let mut map = thread_transactions
-            .lock()
-            .map_err(|_| napi::Error::from_reason("THREAD_TRANSACTIONS Mutex poisoned"))?;
-        callback(&mut map);
-
-        info!("Starting gbt algorithm for {} elements...", map.len());
-        let result = gbt::gbt(&mut map, &accelerations, max_uid);
-        info!("Finished gbt algorithm for {} elements...", map.len());
-
-        debug!(
-            "Releasing lock for thread_transactions from thread {:?}...",
-            std::thread::current().id()
-        );
-        drop(map);
-
-        Ok(result)
-    });
-
-    handle
-        .await
-        .map_err(|_| napi::Error::from_reason("thread panicked"))?
-}

backend/rust-gbt/src/thread_acceleration.rs

@@ -1,8 +0,0 @@
-use napi_derive::napi;
-
-#[derive(Debug)]
-#[napi(object)]
-pub struct ThreadAcceleration {
-    pub uid: u32,
-    pub delta: f64, // fee delta
-}

backend/rust-gbt/src/thread_transaction.rs

@@ -1,13 +0,0 @@
-use napi_derive::napi;
-
-#[derive(Debug)]
-#[napi(object)]
-pub struct ThreadTransaction {
-    pub uid: u32,
-    pub order: u32,
-    pub fee: f64,
-    pub weight: u32,
-    pub sigops: u32,
-    pub effective_fee_per_vsize: f64,
-    pub inputs: Vec<u32>,
-}

backend/rust-gbt/src/u32_hasher_types.rs

@@ -1,132 +0,0 @@
-use priority_queue::PriorityQueue;
-use std::{
-    collections::{HashMap, HashSet},
-    fmt::Debug,
-    hash::{BuildHasher, Hasher},
-};
-
-/// This is the only way to create a `HashMap` with the `U32HasherState` and capacity
-pub fn u32hashmap_with_capacity<V>(capacity: usize) -> HashMap<u32, V, U32HasherState> {
-    HashMap::with_capacity_and_hasher(capacity, U32HasherState(()))
-}
-
-/// This is the only way to create a `PriorityQueue` with the `U32HasherState` and capacity
-pub fn u32priority_queue_with_capacity<V: Ord>(
-    capacity: usize,
-) -> PriorityQueue<u32, V, U32HasherState> {
-    PriorityQueue::with_capacity_and_hasher(capacity, U32HasherState(()))
-}
-
-/// This is the only way to create a `HashSet` with the `U32HasherState`
-pub fn u32hashset_new() -> HashSet<u32, U32HasherState> {
-    HashSet::with_hasher(U32HasherState(()))
-}
-
-/// A private unit type is contained so no one can make an instance of it.
-#[derive(Clone)]
-pub struct U32HasherState(());
-
-impl Debug for U32HasherState {
-    fn fmt(&self, _: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        Ok(())
-    }
-}
-
-impl BuildHasher for U32HasherState {
-    type Hasher = U32Hasher;
-
-    fn build_hasher(&self) -> Self::Hasher {
-        U32Hasher(0)
-    }
-}
-
-/// This also can't be created outside this module due to private field.
-pub struct U32Hasher(u32);
-
-impl Hasher for U32Hasher {
-    fn finish(&self) -> u64 {
-        // Safety: Two u32s next to each other will make a u64
-        bytemuck::cast([self.0, 0])
-    }
-
-    fn write(&mut self, bytes: &[u8]) {
-        // Assert in debug builds (testing too) that only 4 byte keys (u32, i32, f32, etc.) run
-        debug_assert!(bytes.len() == 4);
-        // Safety: We know that the size of the key is 4 bytes
-        // We also know that the only way to get an instance of HashMap using this "hasher"
-        // is through the public functions in this module which set the key type to u32.
-        self.0 = *bytemuck::from_bytes(bytes);
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use super::U32HasherState;
-    use priority_queue::PriorityQueue;
-    use std::collections::HashMap;
-
-    #[test]
-    fn test_hashmap() {
-        let mut hm: HashMap<u32, String, U32HasherState> = HashMap::with_hasher(U32HasherState(()));
-
-        // Testing basic operations with the custom hasher
-        hm.insert(0, String::from("0"));
-        hm.insert(42, String::from("42"));
-        hm.insert(256, String::from("256"));
-        hm.insert(u32::MAX, String::from("MAX"));
-        hm.insert(u32::MAX >> 2, String::from("MAX >> 2"));
-
-        assert_eq!(hm.get(&0), Some(&String::from("0")));
-        assert_eq!(hm.get(&42), Some(&String::from("42")));
-        assert_eq!(hm.get(&256), Some(&String::from("256")));
-        assert_eq!(hm.get(&u32::MAX), Some(&String::from("MAX")));
-        assert_eq!(hm.get(&(u32::MAX >> 2)), Some(&String::from("MAX >> 2")));
-        assert_eq!(hm.get(&(u32::MAX >> 4)), None);
-        assert_eq!(hm.get(&3), None);
-        assert_eq!(hm.get(&43), None);
-    }
-
-    #[test]
-    fn test_priority_queue() {
-        let mut pq: PriorityQueue<u32, i32, U32HasherState> =
-            PriorityQueue::with_hasher(U32HasherState(()));
-
-        // Testing basic operations with the custom hasher
-        assert_eq!(pq.push(1, 5), None);
-        assert_eq!(pq.push(2, -10), None);
-        assert_eq!(pq.push(3, 7), None);
-        assert_eq!(pq.push(4, 20), None);
-        assert_eq!(pq.push(u32::MAX, -42), None);
-
-        assert_eq!(pq.push_increase(1, 4), Some(4));
-        assert_eq!(pq.push_increase(2, -8), Some(-10));
-        assert_eq!(pq.push_increase(3, 5), Some(5));
-        assert_eq!(pq.push_increase(4, 21), Some(20));
-        assert_eq!(pq.push_increase(u32::MAX, -99), Some(-99));
-        assert_eq!(pq.push_increase(42, 1337), None);
-
-        assert_eq!(pq.push_decrease(1, 4), Some(5));
-        assert_eq!(pq.push_decrease(2, -10), Some(-8));
-        assert_eq!(pq.push_decrease(3, 5), Some(7));
-        assert_eq!(pq.push_decrease(4, 20), Some(21));
-        assert_eq!(pq.push_decrease(u32::MAX, 100), Some(100));
-        assert_eq!(pq.push_decrease(69, 420), None);
-
-        assert_eq!(pq.peek(), Some((&42, &1337)));
-        assert_eq!(pq.pop(), Some((42, 1337)));
-        assert_eq!(pq.peek(), Some((&69, &420)));
-        assert_eq!(pq.pop(), Some((69, 420)));
-        assert_eq!(pq.peek(), Some((&4, &20)));
-        assert_eq!(pq.pop(), Some((4, 20)));
-        assert_eq!(pq.peek(), Some((&3, &5)));
-        assert_eq!(pq.pop(), Some((3, 5)));
-        assert_eq!(pq.peek(), Some((&1, &4)));
-        assert_eq!(pq.pop(), Some((1, 4)));
-        assert_eq!(pq.peek(), Some((&2, &-10)));
-        assert_eq!(pq.pop(), Some((2, -10)));
-        assert_eq!(pq.peek(), Some((&u32::MAX, &-42)));
-        assert_eq!(pq.pop(), Some((u32::MAX, -42)));
-        assert_eq!(pq.peek(), None);
-        assert_eq!(pq.pop(), None);
-    }
-}

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

@@ -1,149 +0,0 @@
-{
-  "MEMPOOL": {
-    "ENABLED": true,
-    "NETWORK": "__MEMPOOL_NETWORK__",
-    "BACKEND": "__MEMPOOL_BACKEND__",
-    "BLOCKS_SUMMARIES_INDEXING": true,
-    "GOGGLES_INDEXING": false,
-    "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__",
-    "CACHE_ENABLED": true,
-    "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": [],
-    "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": "__MEMPOOL_POOLS_JSON_TREE_URL__",
-    "POOLS_JSON_URL": "__MEMPOOL_POOLS_JSON_URL__",
-    "AUDIT": true,
-    "ADVANCED_GBT_AUDIT": true,
-    "ADVANCED_GBT_MEMPOOL": true,
-    "RUST_GBT": false,
-    "CPFP_INDEXING": true,
-    "MAX_BLOCKS_BULK_QUERY": 999,
-    "DISK_CACHE_BLOCK_INTERVAL": 999,
-    "MAX_PUSH_TX_SIZE_WEIGHT": 4000000,
-    "ALLOW_UNREACHABLE": true,
-    "PRICE_UPDATES_PER_HOUR": 1,
-    "MAX_TRACKED_ADDRESSES": 1
-  },
-  "CORE_RPC": {
-    "HOST": "__CORE_RPC_HOST__",
-    "PORT": 15,
-    "USERNAME": "__CORE_RPC_USERNAME__",
-    "PASSWORD": "__CORE_RPC_PASSWORD__",
-    "TIMEOUT": 1000,
-    "COOKIE": false,
-    "COOKIE_PATH": "__CORE_RPC_COOKIE_PATH__"
-  },
-  "ELECTRUM": {
-    "HOST": "__ELECTRUM_HOST__",
-    "PORT": 16,
-    "TLS_ENABLED": true
-  },
-  "ESPLORA": {
-    "REST_API_URL": "__ESPLORA_REST_API_URL__",
-    "UNIX_SOCKET_PATH": "__ESPLORA_UNIX_SOCKET_PATH__",
-    "BATCH_QUERY_BASE_SIZE": 1000,
-    "RETRY_UNIX_SOCKET_AFTER": 888,
-    "REQUEST_TIMEOUT": 10000,
-    "FALLBACK_TIMEOUT": 5000,
-    "FALLBACK": []
-  },
-  "SECOND_CORE_RPC": {
-    "HOST": "__SECOND_CORE_RPC_HOST__",
-    "PORT": 17,
-    "USERNAME": "__SECOND_CORE_RPC_USERNAME__",
-    "PASSWORD": "__SECOND_CORE_RPC_PASSWORD__",
-    "TIMEOUT": 2000,
-    "COOKIE": false,
-    "COOKIE_PATH": "__SECOND_CORE_RPC_COOKIE_PATH__"
-  },
-  "DATABASE": {
-    "ENABLED": false,
-    "HOST": "__DATABASE_HOST__",
-    "SOCKET": "__DATABASE_SOCKET__",
-    "PORT": 18,
-    "DATABASE": "__DATABASE_DATABASE__",
-    "USERNAME": "__DATABASE_USERNAME__",
-    "PASSWORD": "__DATABASE_PASSWORD__",
-    "PID_DIR": "__DATABASE_PID_FILE__",
-    "TIMEOUT": 3000
-  },
-  "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__"
-  },
-  "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": true,
-    "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": 1234
-  },
-  "LND": {
-    "TLS_CERT_PATH": "",
-    "MACAROON_PATH": "",
-    "REST_API_URL": "https://localhost:8080",
-    "TIMEOUT": 10000
-  },
-  "CLIGHTNING": {
-    "SOCKET": "__CLIGHTNING_SOCKET__"
-  },
-  "REPLICATION": {
-    "ENABLED": false,
-    "AUDIT": false,
-    "AUDIT_START_HEIGHT": 774000,
-    "SERVERS": []
-  },
-  "MEMPOOL_SERVICES": {
-    "API": "",
-    "ACCELERATIONS": false
-  },
-  "REDIS": {
-    "ENABLED": false,
-    "UNIX_SOCKET_PATH": "/tmp/redis.sock",
-    "BATCH_QUERY_BASE_SIZE": 5000
-  }
-}

backend/src/__tests__/api/common.ts

@@ -1,24 +0,0 @@
-import { Common } from '../../api/common';
-import { MempoolTransactionExtended } from '../../mempool.interfaces';
-
-const randomTransactions = require('./test-data/transactions-random.json');
-const replacedTransactions = require('./test-data/transactions-replaced.json');
-const rbfTransactions = require('./test-data/transactions-rbfs.json');
-
-describe('Mempool Utils', () => {
-  test('should detect RBF transactions with fast method', () => {
-    const newTransactions = rbfTransactions.concat(randomTransactions);
-    const result: { [txid: string]: MempoolTransactionExtended[] } = Common.findRbfTransactions(newTransactions, replacedTransactions);
-    expect(Object.values(result).length).toEqual(2);
-    expect(result).toHaveProperty('7219d95161f3718335991ac6d967d24eedec370908c9879bb1e192e6d797d0a6');
-    expect(result).toHaveProperty('5387881d695d4564d397026dc5f740f816f8390b4b2c5ec8c20309122712a875');
-  });
-
-  test.only('should detect RBF transactions with scalable method', () => {
-    const newTransactions = rbfTransactions.concat(randomTransactions);
-    const result: { [txid: string]: MempoolTransactionExtended[] } = Common.findRbfTransactions(newTransactions, replacedTransactions, true);
-    expect(Object.values(result).length).toEqual(2);
-    expect(result).toHaveProperty('7219d95161f3718335991ac6d967d24eedec370908c9879bb1e192e6d797d0a6');
-    expect(result).toHaveProperty('5387881d695d4564d397026dc5f740f816f8390b4b2c5ec8c20309122712a875');
-  });
-});

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

@@ -1,135 +0,0 @@
-import {
-  calcBitsDifference,
-  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,                              // Latest block timestamp in seconds (only used if difficulty already locked in)
-        ],
-        { // Expected Result
-          progressPercent: 9.027777777777777,
-          difficultyChange: 13.180707740199772,
-          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: 13.180707740199772,
-          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,
-        },
-      ],
-      [ // Vector 3 (mainnet lock-in (epoch ending 788255))
-        [ // Inputs
-          dt('2023-04-20T09:57:33.000Z'), // Last DA time (in seconds)
-          dt('2023-05-04T14:54:09.000Z'), // Current time (now) (in seconds)
-          788255,                         // Current block height
-          1.7220298879531821,             // Previous retarget % (Passed through)
-          'mainnet',                      // Network (if testnet, next value is non-zero)
-          dt('2023-05-04T14:54:26.000Z'), // Latest block timestamp in seconds
-        ],
-        { // Expected Result
-          progressPercent: 99.95039682539682,
-          difficultyChange: -1.4512637555574193,
-          estimatedRetargetDate: 1683212658129,
-          remainingBlocks: 1,
-          remainingTime: 609129,
-          previousRetarget: 1.7220298879531821,
-          previousTime: 1681984653,
-          nextRetargetHeight: 788256,
-          timeAvg: 609129,
-          timeOffset: 0,
-          expectedBlocks: 2045.66,
-        },
-      ],
-    ] 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]);
-    }
-  });
-
-  test('should calculate Difficulty change from bits fields of two blocks', () => {
-    // Check same exponent + check min max for output
-    expect(calcBitsDifference(0x1d000200, 0x1d000100)).toEqual(100);
-    expect(calcBitsDifference(0x1d000400, 0x1d000100)).toEqual(300);
-    expect(calcBitsDifference(0x1d000800, 0x1d000100)).toEqual(300); // Actually 700
-    expect(calcBitsDifference(0x1d000100, 0x1d000200)).toEqual(-50);
-    expect(calcBitsDifference(0x1d000100, 0x1d000400)).toEqual(-75);
-    expect(calcBitsDifference(0x1d000100, 0x1d000800)).toEqual(-75); // Actually -87.5
-    // Check new higher exponent
-    expect(calcBitsDifference(0x1c000200, 0x1d000001)).toEqual(100);
-    expect(calcBitsDifference(0x1c000400, 0x1d000001)).toEqual(300);
-    expect(calcBitsDifference(0x1c000800, 0x1d000001)).toEqual(300);
-    expect(calcBitsDifference(0x1c000100, 0x1d000002)).toEqual(-50);
-    expect(calcBitsDifference(0x1c000100, 0x1d000004)).toEqual(-75);
-    expect(calcBitsDifference(0x1c000100, 0x1d000008)).toEqual(-75);
-    // Check new lower exponent
-    expect(calcBitsDifference(0x1d000002, 0x1c000100)).toEqual(100);
-    expect(calcBitsDifference(0x1d000004, 0x1c000100)).toEqual(300);
-    expect(calcBitsDifference(0x1d000008, 0x1c000100)).toEqual(300);
-    expect(calcBitsDifference(0x1d000001, 0x1c000200)).toEqual(-50);
-    expect(calcBitsDifference(0x1d000001, 0x1c000400)).toEqual(-75);
-    expect(calcBitsDifference(0x1d000001, 0x1c000800)).toEqual(-75);
-    // Check error when exponents are too far apart
-    expect(() => calcBitsDifference(0x1d000001, 0x1a000800)).toThrow(
-      /Impossible exponent difference/
-    );
-    // Check invalid inputs
-    expect(() => calcBitsDifference(0x7f000001, 0x1a000800)).toThrow(
-      /Invalid bits/
-    );
-    expect(() => calcBitsDifference(0, 0x1a000800)).toThrow(/Invalid bits/);
-    expect(() => calcBitsDifference(100.2783, 0x1a000800)).toThrow(
-      /Invalid bits/
-    );
-    expect(() => calcBitsDifference(0x00800000, 0x1a000800)).toThrow(
-      /Invalid bits/
-    );
-    expect(() => calcBitsDifference(0x1c000000, 0x1a000800)).toThrow(
-      /Invalid bits/
-    );
-  });
-});

backend/src/__tests__/api/test-data/transactions-random.json

@@ -1,277 +0,0 @@
-[
-    {
-        "txid": "13f007241d78e8b0b4e57d2ae3fd37bcfe3226534d7cadeba5a549860d960db0",
-        "version": 2,
-        "locktime": 0,
-        "vin": [
-            {
-                "txid": "cb8f206f4e88bec97107089f3e9e61d50cde53d4541992ae19759b71103cf75c",
-                "vout": 0,
-                "prevout": {
-                    "scriptpubkey": "0014fd6d15ff832c12f1ff04a5ccd5039f7227b260bd",
-                    "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 fd6d15ff832c12f1ff04a5ccd5039f7227b260bd",
-                    "scriptpubkey_type": "v0_p2wpkh",
-                    "scriptpubkey_address": "bc1ql4k3tlur9sf0rlcy5hxd2qulwgnmyc9akehvth",
-                    "value": 610677
-                },
-                "scriptsig": "",
-                "scriptsig_asm": "",
-                "witness": [
-                    "304302205c430b36ebd2bb327951d83440af1f58f127871b2baada4c4dde2bc0b6721f56021f3445099f1a40e35baeda32e8e3727b505ffba0d882b11f498c7762f4184e9901",
-                    "0236b5edd4fbbcfb045960e42ec8a9968944084785932e32940e8cd2583b37da67"
-                ],
-                "is_coinbase": false,
-                "sequence": 2147483648
-            }
-        ],
-        "vout": [
-            {
-                "scriptpubkey": "76a9149d32ef812385f3811634e0c0117dd153a5de10a488ac",
-                "scriptpubkey_asm": "OP_DUP OP_HASH160 OP_PUSHBYTES_20 9d32ef812385f3811634e0c0117dd153a5de10a4 OP_EQUALVERIFY OP_CHECKSIG",
-                "scriptpubkey_type": "p2pkh",
-                "scriptpubkey_address": "1FLC7Bag7okAkKPCyZbgZZg3Hh1EuGZ5Rd",
-                "value": 344697
-            },
-            {
-                "scriptpubkey": "00147dee8a7a38abbfb00dbfba365c8d6712934cc491",
-                "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 7dee8a7a38abbfb00dbfba365c8d6712934cc491",
-                "scriptpubkey_type": "v0_p2wpkh",
-                "scriptpubkey_address": "bc1q0hhg573c4wlmqrdlhgm9ert8z2f5e3y3lf9hvx",
-                "value": 265396
-            }
-        ],
-        "size": 224,
-        "weight": 572,
-        "fee": 584,
-        "status": {
-            "confirmed": false
-        },
-        "order": 2953680397,
-        "vsize": 143,
-        "adjustedVsize": 143,
-        "sigops": 5,
-        "feePerVsize": 4.083916083916084,
-        "adjustedFeePerVsize": 4.083916083916084,
-        "effectiveFeePerVsize": 4.083916083916084,
-        "firstSeen": 1691222538,
-        "uid": 526973,
-        "inputs": [
-            526728
-        ],
-        "position": {
-            "block": 7,
-            "vsize": 21429708.5
-        },
-        "bestDescendant": null,
-        "cpfpChecked": true
-    },
-    {
-        "txid": "8e89b20f8a7fadb0e4cdbe57a00eee224f5076bac5387fc276916724e7c4a16a",
-        "version": 2,
-        "locktime": 800571,
-        "vin": [
-            {
-                "txid": "35e16762459539f3a8e52c5dee6a9ccaa9e9268efed33aa2c6e1b7805e849f24",
-                "vout": 0,
-                "prevout": {
-                    "scriptpubkey": "0014d4f16ef275b3e1c4a4ecbef55a164933e0f6460f",
-                    "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 d4f16ef275b3e1c4a4ecbef55a164933e0f6460f",
-                    "scriptpubkey_type": "v0_p2wpkh",
-                    "scriptpubkey_address": "bc1q6nckaun4k0suff8vhm6459jfx0s0v3s0ff4ukl",
-                    "value": 1528924
-                },
-                "scriptsig": "",
-                "scriptsig_asm": "",
-                "witness": [
-                    "3044022019008b26e885bb43da25a11ffac147a057722072eedb68411f114f6e7eb82ebc02201b618264bb97756b88fc3bbc365b73044ac18b33b1067e31cfd5bcd0f50ed2c701",
-                    "039b71145070bd3e8af28e27fa577f2e12ab6bb4e212d3eeaef08b4bc39e8cbc13"
-                ],
-                "is_coinbase": false,
-                "sequence": 4294967293
-            },
-            {
-                "txid": "67c27ed0f767526234bcd5f795a31fab8ec4d0251bf12c68f2746951f4110d90",
-                "vout": 3,
-                "prevout": {
-                    "scriptpubkey": "0014a7c3d613b321375054b2ac9b6114367bc034ad6f",
-                    "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 a7c3d613b321375054b2ac9b6114367bc034ad6f",
-                    "scriptpubkey_type": "v0_p2wpkh",
-                    "scriptpubkey_address": "bc1q5lpavyanyym4q49j4jdkz9pk00qrftt0yqzvk3",
-                    "value": 436523
-                },
-                "scriptsig": "",
-                "scriptsig_asm": "",
-                "witness": [
-                    "304402204e67285fc656bc45ed082499b076d5dba2fa21d0d7e64a0ae52b19d69a11760002200f037d81ee540b74397844513b72b08ed92b06db76bd20b08f7a0a3b36ab13d501",
-                    "02a3ebae85f0225b6fbb5ff060afce683a4683507a57544605a29ee7d287e591b4"
-                ],
-                "is_coinbase": false,
-                "sequence": 4294967293
-            },
-            {
-                "txid": "21c38fb9a2521e438c614f53b19ddd7a5594bcc4b77480e762fd4b702fad3374",
-                "vout": 1,
-                "prevout": {
-                    "scriptpubkey": "00149660e34ef88106536c816c037b5b28dd64a812e2",
-                    "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 9660e34ef88106536c816c037b5b28dd64a812e2",
-                    "scriptpubkey_type": "v0_p2wpkh",
-                    "scriptpubkey_address": "bc1qjeswxnhcsyr9xmypdsphkkegm4j2syhztgzxv4",
-                    "value": 758149
-                },
-                "scriptsig": "",
-                "scriptsig_asm": "",
-                "witness": [
-                    "3044022021b556f0aa99329076bcc435338aceaf534963efcab306931b1b2b0461e16e0c02203a78942a3745c4da656bddfd8cf16b85dc04d652904e88682127cdd9ca63339001",
-                    "0298963be4a8f66aca9fcf1c6dc95547aeaa82347543190c91e094c2321142b9f0"
-                ],
-                "is_coinbase": false,
-                "sequence": 4294967293
-            },
-            {
-                "txid": "aa998dbae65240a7386bf7d468459551d99c3de8e2f9057ff5f2d38e17daf788",
-                "vout": 0,
-                "prevout": {
-                    "scriptpubkey": "00147bb7413a39943b21ded98ad5e6ad7a222d273e17",
-                    "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 7bb7413a39943b21ded98ad5e6ad7a222d273e17",
-                    "scriptpubkey_type": "v0_p2wpkh",
-                    "scriptpubkey_address": "bc1q0wm5zw3ejsajrhke3t27dtt6ygkjw0sh9lltg6",
-                    "value": 1067200
-                },
-                "scriptsig": "",
-                "scriptsig_asm": "",
-                "witness": [
-                    "304402205e2269f7d4ee0513b34354c38e920aef2dabac6f4350afb2dd105ff3ee43ae7b02202870322f2cb85cb0b2b0e38152f018bfff271dc3ec5aed0515854d0b259aaf3d01",
-                    "03b87320cf3263a644a0d3f89c1b4a7304d9dfda9eb8c891560716abcb73e88b99"
-                ],
-                "is_coinbase": false,
-                "sequence": 4294967293
-            },
-            {
-                "txid": "230253d195d779d4688ba16993985cd27b2e7a687d8b889b3bc63f19ece36f20",
-                "vout": 0,
-                "prevout": {
-                    "scriptpubkey": "001439647bd997819d12dfc72b0fb9ff9ffcb84946f8",
-                    "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 39647bd997819d12dfc72b0fb9ff9ffcb84946f8",
-                    "scriptpubkey_type": "v0_p2wpkh",
-                    "scriptpubkey_address": "bc1q89j8hkvhsxw39h789v8mnlulljuyj3hc9zve97",
-                    "value": 361950
-                },
-                "scriptsig": "",
-                "scriptsig_asm": "",
-                "witness": [
-                    "304402204f7ca868bb9b92a07fecdc6b9dd56e4e1d007ca1405952f98ed6bc416345b5f2022055320a97791417abf6628fcf6513ac5785b06c630f854d8595e96ea06c3841d301",
-                    "03a3ffe8e3ef2eea129b227e9658164bae0a6d21c17da6de9973ba34d9e04b21a0"
-                ],
-                "is_coinbase": false,
-                "sequence": 4294967293
-            },
-            {
-                "txid": "670771e265a0b62dbd3c1fec2b865177eaf0bafd0ae49dd40a1c9fcd9a847a81",
-                "vout": 0,
-                "prevout": {
-                    "scriptpubkey": "0014d45d1b0022c7387e42c5452ced561bdb8fd4b521",
-                    "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 d45d1b0022c7387e42c5452ced561bdb8fd4b521",
-                    "scriptpubkey_type": "v0_p2wpkh",
-                    "scriptpubkey_address": "bc1q63w3kqpzcuu8usk9g5kw64smmw8afdfpxmc2m0",
-                    "value": 453275
-                },
-                "scriptsig": "",
-                "scriptsig_asm": "",
-                "witness": [
-                    "3044022071312921800441903b2099e723add8702dd0f92ec11526ff87acf6967ec64cbd02203deabe7ed56d5daaa9a95c5a607b1ab705ff1c46bc6984a6dca120e63a91768601",
-                    "0257302ac8d9c4c8f9b1744f19bb432359326b9cc7bdddeeab9202749a6d92be58"
-                ],
-                "is_coinbase": false,
-                "sequence": 4294967293
-            },
-            {
-                "txid": "0af82159eee2b69242f2ff032636e410b67ec1ace52e55fb0d20ed814cd64803",
-                "vout": 0,
-                "prevout": {
-                    "scriptpubkey": "001459e4d6bfefc6b45f955a69c4aeca26348e9d54ed",
-                    "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 59e4d6bfefc6b45f955a69c4aeca26348e9d54ed",
-                    "scriptpubkey_type": "v0_p2wpkh",
-                    "scriptpubkey_address": "bc1qt8jdd0l0c669l926d8z2aj3xxj8f648dtyn7tc",
-                    "value": 439961
-                },
-                "scriptsig": "",
-                "scriptsig_asm": "",
-                "witness": [
-                    "3044022027540322e92c23c5513aa2587e7feb56a8ce82f879269d6b3cbd425634b44f8e022045572dee7262b02130bfe32d8aa8abbfaa64e101abfc819bba5380c78876692d01",
-                    "03fe02262d87f4a5289d3dd66e3d9a74cd49fa1cad0249284a7451896a827249a5"
-                ],
-                "is_coinbase": false,
-                "sequence": 4294967293
-            },
-            {
-                "txid": "68cf9c784870a4f888f044755f7ce318557f652461db8ef887d279672f186018",
-                "vout": 0,
-                "prevout": {
-                    "scriptpubkey": "001454822b2d5d52597a78b630921cf439a41e32f2f9",
-                    "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 54822b2d5d52597a78b630921cf439a41e32f2f9",
-                    "scriptpubkey_type": "v0_p2wpkh",
-                    "scriptpubkey_address": "bc1q2jpzkt2a2fvh579kxzfpeape5s0r9uhewhl5n4",
-                    "value": 227639
-                },
-                "scriptsig": "",
-                "scriptsig_asm": "",
-                "witness": [
-                    "304402203ad511d6a8730748b8828bc38897d360451adf620ebdc1d229c08c097c80bef202202f50c793d95b5200cf2258e03896a3be7720df0eb3b8c810c86db74341a7e83e01",
-                    "0294992e9f4546e6e119741f908411ae531e9d1ff732d69b4dff8172aaf2a4b216"
-                ],
-                "is_coinbase": false,
-                "sequence": 4294967293
-            },
-            {
-                "txid": "793f01dfdb19bf41f958fd917c16d9c4dd5d5e1a5c0434bfdb367212659d1b5b",
-                "vout": 0,
-                "prevout": {
-                    "scriptpubkey": "0014f54edf8ae647b5300e2674523254e923d93d169f",
-                    "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 f54edf8ae647b5300e2674523254e923d93d169f",
-                    "scriptpubkey_type": "v0_p2wpkh",
-                    "scriptpubkey_address": "bc1q748dlzhxg76nqr3xw3fry48fy0vn695lvhlkxv",
-                    "value": 227070
-                },
-                "scriptsig": "",
-                "scriptsig_asm": "",
-                "witness": [
-                    "304402206e807ab616f4f2887ba703ae744d856142d9aca8128698419bbb67fb4fad8177022060fc65c7cd66baa88ad1e1d317a6edd5f6cb52fe8bff6e5405ffa1acf9d945d901",
-                    "02a0ad0167c6e9edf62677404d74d3b80ea276e47e758ffaa6ca17bd65ac79f7aa"
-                ],
-                "is_coinbase": false,
-                "sequence": 4294967293
-            }
-        ],
-        "vout": [
-            {
-                "scriptpubkey": "00148a5c45ccfc29d209940d94525e2edb7743a1ad8a",
-                "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 8a5c45ccfc29d209940d94525e2edb7743a1ad8a",
-                "scriptpubkey_type": "v0_p2wpkh",
-                "scriptpubkey_address": "bc1q3fwytn8u98fqn9qdj3f9utkmwap6rtv2ym33zm",
-                "value": 5500000
-            }
-        ],
-        "size": 1375,
-        "weight": 2605,
-        "fee": 691,
-        "status": {
-            "confirmed": false
-        },
-        "order": 1788986599,
-        "vsize": 651,
-        "adjustedVsize": 651.25,
-        "sigops": 9,
-        "feePerVsize": 1.0610364683301343,
-        "adjustedFeePerVsize": 1.0610364683301343,
-        "effectiveFeePerVsize": 1.0610364683301343,
-        "firstSeen": 1691163298,
-        "uid": 120494,
-        "inputs": [],
-        "position": {
-            "block": 7,
-            "vsize": 93780091.5
-        },
-        "bestDescendant": null,
-        "cpfpChecked": true
-    }
-]

backend/src/__tests__/api/test-data/transactions-rbfs.json

@@ -1,121 +0,0 @@
-[
-    {
-        "txid": "7219d95161f3718335991ac6d967d24eedec370908c9879bb1e192e6d797d0a6",
-        "version": 1,
-        "locktime": 0,
-        "vin": [
-            {
-                "txid": "d863deb706de5a611028f7547e16ea81d7819e44beb640fb30a9ba30c585140f",
-                "vout": 0,
-                "prevout": {
-                    "scriptpubkey": "76a914cd5b6566b455d043558829f6932edaae5d8f0ad388ac",
-                    "scriptpubkey_asm": "OP_DUP OP_HASH160 OP_PUSHBYTES_20 cd5b6566b455d043558829f6932edaae5d8f0ad3 OP_EQUALVERIFY OP_CHECKSIG",
-                    "scriptpubkey_type": "p2pkh",
-                    "scriptpubkey_address": "1Kiq1dyVBzYLWGrBPWjChvKyzB2H95x5RJ",
-                    "value": 799995000
-                },
-                "scriptsig": "483045022100aeeddfb9785c5a4b70e90d0445785c68b7a44e28853441134a70ddc4da39527602203dfe1ec1a377aaacb64ae65c7c944caf1398d2dc063f712251b4cf696d44d3cb01210314338e3e191aea3ac9e9292611faeedf0379bbe62c30fd76c7450722a1ac47c6",
-                "scriptsig_asm": "OP_PUSHBYTES_72 3045022100aeeddfb9785c5a4b70e90d0445785c68b7a44e28853441134a70ddc4da39527602203dfe1ec1a377aaacb64ae65c7c944caf1398d2dc063f712251b4cf696d44d3cb01 OP_PUSHBYTES_33 0314338e3e191aea3ac9e9292611faeedf0379bbe62c30fd76c7450722a1ac47c6",
-                "is_coinbase": false,
-                "sequence": 4294967293
-            }
-        ],
-        "vout": [
-            {
-                "scriptpubkey": "6a4c5058325b8669baa9259e082f064005bc92274b559337ac317798f5d76f2d0577ed5a96042fce8c33d841b6c47a99f9597000ab04a10b34cd419fc19784d9e36f1a33fd7b000c3bce00b6000c1d1e00614b",
-                "scriptpubkey_asm": "OP_RETURN OP_PUSHDATA1 58325b8669baa9259e082f064005bc92274b559337ac317798f5d76f2d0577ed5a96042fce8c33d841b6c47a99f9597000ab04a10b34cd419fc19784d9e36f1a33fd7b000c3bce00b6000c1d1e00614b",
-                "scriptpubkey_type": "op_return",
-                "value": 0
-            },
-            {
-                "scriptpubkey": "a9144890aae025c84cb72a9730b49ca12595d6f6088d87",
-                "scriptpubkey_asm": "OP_HASH160 OP_PUSHBYTES_20 4890aae025c84cb72a9730b49ca12595d6f6088d OP_EQUAL",
-                "scriptpubkey_type": "p2sh",
-                "scriptpubkey_address": "38Jht2bzmJL4EwoFvvyFzejhfEb4J7KxLb",
-                "value": 155000
-            },
-            {
-                "scriptpubkey": "76a91486e7dad6617303942a448b7f8afe9653e5624a5e88ac",
-                "scriptpubkey_asm": "OP_DUP OP_HASH160 OP_PUSHBYTES_20 86e7dad6617303942a448b7f8afe9653e5624a5e OP_EQUALVERIFY OP_CHECKSIG",
-                "scriptpubkey_type": "p2pkh",
-                "scriptpubkey_address": "1DJKJGApgX4W8BSQ8FRPLqX78UaCskT4r2",
-                "value": 155000
-            },
-            {
-                "scriptpubkey": "76a914cd5b6566b455d043558829f6932edaae5d8f0ad388ac",
-                "scriptpubkey_asm": "OP_DUP OP_HASH160 OP_PUSHBYTES_20 cd5b6566b455d043558829f6932edaae5d8f0ad3 OP_EQUALVERIFY OP_CHECKSIG",
-                "scriptpubkey_type": "p2pkh",
-                "scriptpubkey_address": "1Kiq1dyVBzYLWGrBPWjChvKyzB2H95x5RJ",
-                "value": 799675549
-            }
-        ],
-        "size": 350,
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-        "fee": 9451,
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-        },
-        "order": 2798688215,
-        "vsize": 350,
-        "adjustedVsize": 350,
-        "sigops": 8,
-        "feePerVsize": 27.002857142857142,
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-        "effectiveFeePerVsize": 27.002857142857142,
-        "firstSeen": 1691218536,
-        "uid": 513598,
-        "inputs": [],
-        "position": {
-            "block": 0,
-            "vsize": 22166
-        },
-        "bestDescendant": null,
-        "cpfpChecked": true
-    },
-    {
-        "txid": "5387881d695d4564d397026dc5f740f816f8390b4b2c5ec8c20309122712a875",
-        "version": 2,
-        "locktime": 0,
-        "vin": [
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-                "prevout": {
-                    "scriptpubkey": "0014a24f913f8a9c30a4c302c2c78f2fd7addb08fd07",
-                    "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 a24f913f8a9c30a4c302c2c78f2fd7addb08fd07",
-                    "scriptpubkey_type": "v0_p2wpkh",
-                    "scriptpubkey_address": "bc1q5f8ez0u2nsc2fsczctrc7t7h4hds3lg82ewqhz",
-                    "value": 612917
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-                "scriptsig": "",
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-                "witness": [
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-                    "03dc2c7b687019b40a68d713322675206cc266e34e5340ec982c13ff0222c3b2b6"
-                ],
-                "is_coinbase": false,
-                "sequence": 2147483649
-            }
-        ],
-        "vout": [
-            {
-                "scriptpubkey": "0014199a98f9589364ffe5ef5bbae45ce5dfcbb873bd",
-                "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 199a98f9589364ffe5ef5bbae45ce5dfcbb873bd",
-                "scriptpubkey_type": "v0_p2wpkh",
-                "scriptpubkey_address": "bc1qrxdf372cjdj0le00twawgh89ml9msuaau62gk4",
-                "value": 611909
-            }
-        ],
-        "size": 192,
-        "weight": 438,
-        "fee": 1008,
-        "status": {
-            "confirmed": false
-        },
-        "bestDescendant": null,
-        "descendants": null,
-        "adjustedFeePerVsize": 10.2283,
-        "sigops": 1,
-        "adjustedVsize": 109.5
-    }
-]

backend/src/__tests__/api/test-data/transactions-replaced.json

@@ -1,139 +0,0 @@
-[
-    {
-        "txid": "008592364e21c1e3d62ba9538ac78a81779897b52100af5707ab063df98964f2",
-        "version": 1,
-        "locktime": 0,
-        "vin": [
-            {
-                "txid": "d863deb706de5a611028f7547e16ea81d7819e44beb640fb30a9ba30c585140f",
-                "vout": 0,
-                "prevout": {
-                    "scriptpubkey": "76a914cd5b6566b455d043558829f6932edaae5d8f0ad388ac",
-                    "scriptpubkey_asm": "OP_DUP OP_HASH160 OP_PUSHBYTES_20 cd5b6566b455d043558829f6932edaae5d8f0ad3 OP_EQUALVERIFY OP_CHECKSIG",
-                    "scriptpubkey_type": "p2pkh",
-                    "scriptpubkey_address": "1Kiq1dyVBzYLWGrBPWjChvKyzB2H95x5RJ",
-                    "value": 799995000
-                },
-                "scriptsig": "483045022100c1fb331d155a7d299a0451d14fa1122b328e0e239afc9ba8dc2aff449ddc5a3a02201c1e19030d1efa432f5069cd369d7ad09a67f68501345e4db35f7b799605f55601210314338e3e191aea3ac9e9292611faeedf0379bbe62c30fd76c7450722a1ac47c6",
-                "scriptsig_asm": "OP_PUSHBYTES_72 3045022100c1fb331d155a7d299a0451d14fa1122b328e0e239afc9ba8dc2aff449ddc5a3a02201c1e19030d1efa432f5069cd369d7ad09a67f68501345e4db35f7b799605f55601 OP_PUSHBYTES_33 0314338e3e191aea3ac9e9292611faeedf0379bbe62c30fd76c7450722a1ac47c6",
-                "is_coinbase": false,
-                "sequence": 4294967293
-            }
-        ],
-        "vout": [
-            {
-                "scriptpubkey": "6a4c5058325b78064160b631b5a15d9078d99c0db066449fb4c59bbfa4d987ba906e2990088b2fce8c33d841b6c47a99f9597000ab04a10b34cd419fc19784d9e36f1a33fd7b000c3bce00b6000c1d1e00614b",
-                "scriptpubkey_asm": "OP_RETURN OP_PUSHDATA1 58325b78064160b631b5a15d9078d99c0db066449fb4c59bbfa4d987ba906e2990088b2fce8c33d841b6c47a99f9597000ab04a10b34cd419fc19784d9e36f1a33fd7b000c3bce00b6000c1d1e00614b",
-                "scriptpubkey_type": "op_return",
-                "value": 0
-            },
-            {
-                "scriptpubkey": "a9144890aae025c84cb72a9730b49ca12595d6f6088d87",
-                "scriptpubkey_asm": "OP_HASH160 OP_PUSHBYTES_20 4890aae025c84cb72a9730b49ca12595d6f6088d OP_EQUAL",
-                "scriptpubkey_type": "p2sh",
-                "scriptpubkey_address": "38Jht2bzmJL4EwoFvvyFzejhfEb4J7KxLb",
-                "value": 155000
-            },
-            {
-                "scriptpubkey": "76a91486e7dad6617303942a448b7f8afe9653e5624a5e88ac",
-                "scriptpubkey_asm": "OP_DUP OP_HASH160 OP_PUSHBYTES_20 86e7dad6617303942a448b7f8afe9653e5624a5e OP_EQUALVERIFY OP_CHECKSIG",
-                "scriptpubkey_type": "p2pkh",
-                "scriptpubkey_address": "1DJKJGApgX4W8BSQ8FRPLqX78UaCskT4r2",
-                "value": 155000
-            },
-            {
-                "scriptpubkey": "76a914cd5b6566b455d043558829f6932edaae5d8f0ad388ac",
-                "scriptpubkey_asm": "OP_DUP OP_HASH160 OP_PUSHBYTES_20 cd5b6566b455d043558829f6932edaae5d8f0ad3 OP_EQUALVERIFY OP_CHECKSIG",
-                "scriptpubkey_type": "p2pkh",
-                "scriptpubkey_address": "1Kiq1dyVBzYLWGrBPWjChvKyzB2H95x5RJ",
-                "value": 799676250
-            }
-        ],
-        "size": 350,
-        "weight": 1400,
-        "fee": 8750,
-        "status": {
-            "confirmed": false
-        },
-        "order": 4066675193,
-        "vsize": 350,
-        "adjustedVsize": 350,
-        "sigops": 8,
-        "feePerVsize": 25,
-        "adjustedFeePerVsize": 25,
-        "effectiveFeePerVsize": 25,
-        "firstSeen": 1691218516,
-        "uid": 512584,
-        "inputs": [],
-        "position": {
-            "block": 0,
-            "vsize": 13846
-        },
-        "bestDescendant": null,
-        "cpfpChecked": true
-    },
-    {
-        "txid": "b7981a624e4261c11f1246314d41e74be56af82eb557bcd054a5e0f94c023668",
-        "version": 2,
-        "locktime": 0,
-        "vin": [
-            {
-                "txid": "b50225a04a1d6fbbfa7a2122bc0580396f614027b3957f476229633576f06130",
-                "vout": 0,
-                "prevout": {
-                    "scriptpubkey": "0014a24f913f8a9c30a4c302c2c78f2fd7addb08fd07",
-                    "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 a24f913f8a9c30a4c302c2c78f2fd7addb08fd07",
-                    "scriptpubkey_type": "v0_p2wpkh",
-                    "scriptpubkey_address": "bc1q5f8ez0u2nsc2fsczctrc7t7h4hds3lg82ewqhz",
-                    "value": 612917
-                },
-                "scriptsig": "",
-                "scriptsig_asm": "",
-                "witness": [
-                    "304402204dd10f14afa41bc76d8278140ff1ec3d3f87f2c207bbb5418cc76dab30d7f6a402207877cc9c6a2c724b6ea7a1c24ac00022469f194fd1a4bd8030bbca1787d3f5f301",
-                    "03dc2c7b687019b40a68d713322675206cc266e34e5340ec982c13ff0222c3b2b6"
-                ],
-                "is_coinbase": false,
-                "sequence": 2147483648
-            }
-        ],
-        "vout": [
-            {
-                "scriptpubkey": "76a9149d32ef812385f3811634e0c0117dd153a5de10a488ac",
-                "scriptpubkey_asm": "OP_DUP OP_HASH160 OP_PUSHBYTES_20 9d32ef812385f3811634e0c0117dd153a5de10a4 OP_EQUALVERIFY OP_CHECKSIG",
-                "scriptpubkey_type": "p2pkh",
-                "scriptpubkey_address": "1FLC7Bag7okAkKPCyZbgZZg3Hh1EuGZ5Rd",
-                "value": 344697
-            },
-            {
-                "scriptpubkey": "00144c2671336ca8761863b4c68d64d4672491fec1b9",
-                "scriptpubkey_asm": "OP_0 OP_PUSHBYTES_20 4c2671336ca8761863b4c68d64d4672491fec1b9",
-                "scriptpubkey_type": "v0_p2wpkh",
-                "scriptpubkey_address": "bc1qfsn8zvmv4pmpsca5c6xkf4r8yjglasdesrawcx",
-                "value": 267636
-            }
-        ],
-        "size": 225,
-        "weight": 573,
-        "fee": 584,
-        "status": {
-            "confirmed": false
-        },
-        "order": 1748369996,
-        "vsize": 143,
-        "adjustedVsize": 143.25,
-        "sigops": 5,
-        "feePerVsize": 4.076788830715532,
-        "adjustedFeePerVsize": 4.076788830715532,
-        "effectiveFeePerVsize": 4.076788830715532,
-        "firstSeen": 1691222376,
-        "uid": 526515,
-        "inputs": [],
-        "position": {
-            "block": 7,
-            "vsize": 22021095.5
-        },
-        "bestDescendant": null,
-        "cpfpChecked": true
-    }
-]

backend/src/__tests__/config.test.ts

@@ -1,289 +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,
-        GOGGLES_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',
-        CACHE_ENABLED: true,
-        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,
-        RUST_GBT: false,
-        CPFP_INDEXING: false,
-        MAX_BLOCKS_BULK_QUERY: 0,
-        DISK_CACHE_BLOCK_INTERVAL: 6,
-        MAX_PUSH_TX_SIZE_WEIGHT: 400000,
-        ALLOW_UNREACHABLE: true,
-        PRICE_UPDATES_PER_HOUR: 1,
-        MAX_TRACKED_ADDRESSES: 1,
-      });
-
-      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',
-        UNIX_SOCKET_PATH: null,
-        BATCH_QUERY_BASE_SIZE: 1000,
-        RETRY_UNIX_SOCKET_AFTER: 30000,
-        REQUEST_TIMEOUT: 10000,
-        FALLBACK_TIMEOUT: 5000,
-        FALLBACK: [],
-       });
-
-      expect(config.CORE_RPC).toStrictEqual({
-        HOST: '127.0.0.1',
-        PORT: 8332,
-        USERNAME: 'mempool',
-        PASSWORD: 'mempool',
-        TIMEOUT: 60000,
-        COOKIE: false,
-        COOKIE_PATH: '/bitcoin/.cookie'
-      });
-
-      expect(config.SECOND_CORE_RPC).toStrictEqual({
-        HOST: '127.0.0.1',
-        PORT: 8332,
-        USERNAME: 'mempool',
-        PASSWORD: 'mempool',
-        TIMEOUT: 60000,
-        COOKIE: false,
-        COOKIE_PATH: '/bitcoin/.cookie'
-      });
-
-      expect(config.DATABASE).toStrictEqual({
-        ENABLED: true,
-        HOST: '127.0.0.1',
-        SOCKET: '',
-        PORT: 3306,
-        DATABASE: 'mempool',
-        USERNAME: 'mempool',
-        PASSWORD: 'mempool',
-        TIMEOUT: 180000,
-        PID_DIR: ''
-      });
-
-      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.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: 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'
-      });
-
-      expect(config.REPLICATION).toStrictEqual({
-        ENABLED: false,
-        AUDIT: false,
-        AUDIT_START_HEIGHT: 774000,
-        SERVERS: []
-      });
-
-      expect(config.MEMPOOL_SERVICES).toStrictEqual({
-        API: "",
-        ACCELERATIONS: false,
-      });
-
-      expect(config.REDIS).toStrictEqual({
-        ENABLED: false,
-        UNIX_SOCKET_PATH: '',
-        BATCH_QUERY_BASE_SIZE: 5000,
-      });
-    });
-  });
-
-  test('should override the default values with the passed values', () => {
-    jest.isolateModules(() => {
-      const fixture = JSON.parse(fs.readFileSync(`${__dirname}/../__fixtures__/mempool-config.template.json`, 'utf8'));
-      jest.mock('../../mempool-config.json', () => (fixture), { virtual: true });
-
-      const config = jest.requireActual('../config').default;
-
-      expect(config.MEMPOOL).toStrictEqual(fixture.MEMPOOL);
-
-      expect(config.ELECTRUM).toStrictEqual(fixture.ELECTRUM);
-
-      expect(config.ESPLORA).toStrictEqual(fixture.ESPLORA);
-
-      expect(config.CORE_RPC).toStrictEqual(fixture.CORE_RPC);
-
-      expect(config.SECOND_CORE_RPC).toStrictEqual(fixture.SECOND_CORE_RPC);
-
-      expect(config.DATABASE).toStrictEqual(fixture.DATABASE);
-
-      expect(config.SYSLOG).toStrictEqual(fixture.SYSLOG);
-
-      expect(config.STATISTICS).toStrictEqual(fixture.STATISTICS);
-
-      expect(config.BISQ).toStrictEqual(fixture.BISQ);
-
-      expect(config.SOCKS5PROXY).toStrictEqual(fixture.SOCKS5PROXY);
-
-      expect(config.EXTERNAL_DATA_SERVER).toStrictEqual(fixture.EXTERNAL_DATA_SERVER);
-
-      expect(config.MEMPOOL_SERVICES).toStrictEqual(fixture.MEMPOOL_SERVICES);
-
-      expect(config.REDIS).toStrictEqual(fixture.REDIS);
-    });
-  });
-
-  test('should ensure the docker start.sh script has default values', () => {
-    jest.isolateModules(() => {
-      const startSh = fs.readFileSync(`${__dirname}/../../../docker/backend/start.sh`, 'utf-8');
-      const fixture = JSON.parse(fs.readFileSync(`${__dirname}/../__fixtures__/mempool-config.template.json`, 'utf8'));
-
-      function parseJson(jsonObj, root?) {
-        for (const [key, value] of Object.entries(jsonObj)) {
-          // We have a few cases where we can't follow the pattern
-          if (root === 'MEMPOOL' && key === 'HTTP_PORT') {
-            if (process.env.CI) {
-              console.log('skipping check for MEMPOOL_HTTP_PORT');
-            }
-            continue;
-          }
-
-          if (root) {
-              //The flattened string, i.e, __MEMPOOL_ENABLED__
-              const replaceStr = `${root ? '__' + root + '_' : '__'}${key}__`;
-
-              //The string used as the environment variable, i.e, MEMPOOL_ENABLED
-              const envVarStr = `${root ? root : ''}_${key}`;
-
-              let defaultEntry;
-              //The string used as the default value, to be checked as a regex, i.e, __MEMPOOL_ENABLED__=${MEMPOOL_ENABLED:=(.*)}
-              if (Array.isArray(value)) {
-                defaultEntry = `${replaceStr}=\${${envVarStr}:=[]}`;
-                if (process.env.CI) {
-                  console.log(`looking for ${defaultEntry} in the start.sh script`);
-                }
-                //Regex matching does not work with the array values
-                expect(startSh).toContain(defaultEntry);
-              } else {
-                 defaultEntry = replaceStr + '=' + '\\${' + envVarStr + ':=(.*)' + '}';
-                 if (process.env.CI) {
-                  console.log(`looking for ${defaultEntry} in the start.sh script`);
-                }
-                const re = new RegExp(defaultEntry);
-                expect(startSh).toMatch(re);
-              }
-
-              //The string that actually replaces the values in the config file
-              const sedStr = 'sed -i "s!' + replaceStr + '!${' + replaceStr + '}!g" mempool-config.json';
-              if (process.env.CI) {
-                console.log(`looking for ${sedStr} in the start.sh script`);
-              }
-              expect(startSh).toContain(sedStr);
-            }
-          else {
-            parseJson(value, key);
-          }
-        }
-      }
-
-      parseJson(fixture);
-    });
-  });
-
-  test('should ensure that the mempool-config.json Docker template has all the keys', () => {
-    jest.isolateModules(() => {
-      const fixture = JSON.parse(fs.readFileSync(`${__dirname}/../__fixtures__/mempool-config.template.json`, 'utf8'));
-      const dockerJson = fs.readFileSync(`${__dirname}/../../../docker/backend/mempool-config.json`, 'utf-8');
-
-      function parseJson(jsonObj, root?) {
-        for (const [key, value] of Object.entries(jsonObj)) {
-          switch (typeof value) {
-            case 'object': {
-              if (Array.isArray(value)) {
-                // numbers, arrays and booleans won't be enclosed by quotes
-                const replaceStr = `${root ? '__' + root + '_' : '__'}${key}__`;
-                expect(dockerJson).toContain(`"${key}": ${replaceStr}`);
-                break;
-              } else {
-                //Check for top level config keys
-                expect(dockerJson).toContain(`"${key}"`);
-                parseJson(value, key);
-                break;
-              }
-            }
-            case 'string': {
-              // strings should be enclosed by quotes
-              const replaceStr = `${root ? '__' + root + '_' : '__'}${key}__`;
-              expect(dockerJson).toContain(`"${key}": "${replaceStr}"`);
-              break;
-            }
-            default: {
-              // numbers, arrays and booleans won't be enclosed by quotes
-              const replaceStr = `${root ? '__' + root + '_' : '__'}${key}__`;
-              expect(dockerJson).toContain(`"${key}": ${replaceStr}`);
-              break;
-            }
-          }
-        };
-      }
-      parseJson(fixture);
-    });
-  });
-
-
-});

backend/src/__tests__/gbt/gbt-tests.ts

@@ -1,68 +0,0 @@
-import fs from 'fs';
-import { GbtGenerator, ThreadTransaction } from 'rust-gbt';
-import path from 'path';
-
-const baseline = require('./test-data/target-template.json');
-const testVector = require('./test-data/test-data-ids.json');
-const vectorUidMap: Map<number, string> = new Map(testVector.map(x => [x[0], x[1]]));
-const vectorTxidMap: Map<string, number>  = new Map(testVector.map(x => [x[1], x[0]]));
-// Note that this test buffer is specially constructed
-// such that uids are assigned in numerical txid order
-// so that ties break the same way as in Core's implementation
-const vectorBuffer: Buffer = fs.readFileSync(path.join(__dirname, './', './test-data/test-buffer.bin'));
-
-describe('Rust GBT', () => {
-  test('should produce the same template as getBlockTemplate from Bitcoin Core', async () => {
-    const rustGbt = new GbtGenerator();
-    const { mempool, maxUid } = mempoolFromArrayBuffer(vectorBuffer.buffer);
-    const result = await rustGbt.make(mempool, [], maxUid);
-
-    const blocks: [string, number][][] = result.blocks.map(block => {
-      return block.map(uid => [vectorUidMap.get(uid) || 'missing', uid]);
-    });
-    const template = baseline.map(tx => [tx.txid, vectorTxidMap.get(tx.txid)]);
-
-    expect(blocks[0].length).toEqual(baseline.length);
-    expect(blocks[0]).toEqual(template);
-  });
-});
-
-function mempoolFromArrayBuffer(buf: ArrayBuffer): { mempool: ThreadTransaction[], maxUid: number } {
-  let maxUid = 0;
-  const view = new DataView(buf);
-  const count = view.getUint32(0, false);
-  const txs: ThreadTransaction[] = [];
-  let offset = 4;
-  for (let i = 0; i < count; i++) {
-    const uid = view.getUint32(offset, false);
-    maxUid = Math.max(maxUid, uid);
-    const tx: ThreadTransaction = {
-      uid,
-      order: txidToOrdering(vectorUidMap.get(uid) as string),
-      fee: view.getFloat64(offset + 4, false),
-      weight: view.getUint32(offset + 12, false),
-      sigops: view.getUint32(offset + 16, false),
-      // feePerVsize: view.getFloat64(offset + 20, false),
-      effectiveFeePerVsize: view.getFloat64(offset + 28, false),
-      inputs: [],
-    };
-    const numInputs = view.getUint32(offset + 36, false);
-    offset += 40;
-    for (let j = 0; j < numInputs; j++) {
-      tx.inputs.push(view.getUint32(offset, false));
-      offset += 4;
-    }
-    txs.push(tx);
-  }
-  return { mempool: txs, maxUid };
-}
-
-function txidToOrdering(txid: string): number {
-  return parseInt(
-    txid.substr(62, 2) +
-      txid.substr(60, 2) +
-      txid.substr(58, 2) +
-      txid.substr(56, 2),
-    16
-  );
-}

backend/src/api/audit.ts

@@ -1,168 +0,0 @@
-import config from '../config';
-import logger from '../logger';
-import { MempoolTransactionExtended, MempoolBlockWithTransactions } from '../mempool.interfaces';
-import rbfCache from './rbf-cache';
-
-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: MempoolTransactionExtended[], projectedBlocks: MempoolBlockWithTransactions[], mempool: { [txId: string]: MempoolTransactionExtended }, useAccelerations: boolean = false)
-   : { censored: string[], added: string[], fresh: string[], sigop: string[], fullrbf: string[], accelerated: string[], score: number, similarity: number } {
-    if (!projectedBlocks?.[0]?.transactionIds || !mempool) {
-      return { censored: [], added: [], fresh: [], sigop: [], fullrbf: [], accelerated: [], score: 1, 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 or lastBoosted within PROPAGATION_MARGIN
-    const rbf: string[] = []; // either missing or present, and either part of a full-rbf replacement, or a conflict with the mined block
-    const accelerated: string[] = []; // prioritized by the mempool accelerator
-    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;
-      if (mempool[tx.txid] && mempool[tx.txid].acceleration) {
-        accelerated.push(tx.txid);
-      }
-    }
-    // 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]) {
-        // allow missing transactions which either belong to a full rbf tree, or conflict with any transaction in the mined block
-        if (rbfCache.has(txid) && (rbfCache.isFullRbf(txid) || rbfCache.anyInSameTree(txid, (tx) => inBlock[tx.txid]))) {
-          rbf.push(txid);
-        } else if (mempool[txid]?.firstSeen != null && (now - (mempool[txid]?.firstSeen || 0)) <= PROPAGATION_MARGIN) {
-          // tx is recent, may have reached the miner too late for inclusion
-          fresh.push(txid);
-        } else if (mempool[txid]?.lastBoosted != null && (now - (mempool[txid]?.lastBoosted || 0)) <= PROPAGATION_MARGIN) {
-          // tx was recently cpfp'd, miner may not have the latest effective rate
-          fresh.push(txid);
-        } else {
-          isCensored[txid] = true;
-        }
-        displacedWeight += mempool[txid]?.weight || 0;
-      } else {
-        matchedWeight += mempool[txid]?.weight || 0;
-      }
-      projectedWeight += mempool[txid]?.weight || 0;
-      inTemplate[txid] = true;
-    }
-
-    if (transactions[0]) {
-      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 tx = mempool[txid];
-      if (tx) {
-        const fits = (tx.weight - displacedWeightRemaining) < 4000;
-        const feeMatches = tx.effectiveFeePerVsize >= lastFeeRate;
-        if (fits || feeMatches) {
-          isDisplaced[txid] = true;
-          if (fits) {
-            lastFeeRate = Math.min(lastFeeRate, tx.effectiveFeePerVsize);
-          }
-          if (tx.firstSeen == null || (now - (tx?.firstSeen || 0)) > PROPAGATION_MARGIN) {
-            displacedWeightRemaining -= tx.weight;
-          }
-          failures = 0;
-        } else {
-          failures++;
-        }
-      } else {
-        logger.warn('projected transaction missing from mempool cache');
-      }
-      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 (rbfCache.has(tx.txid)) {
-          rbf.push(tx.txid);
-        } else if (!isDisplaced[tx.txid]) {
-          added.push(tx.txid);
-        }
-        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];
-      const tx = mempool[txid];
-      if (tx) {
-        if (overflowWeightRemaining > 0) {
-          if (isCensored[txid]) {
-            delete isCensored[txid];
-          }
-          if (tx.effectiveFeePerVsize > maxOverflowRate) {
-            maxOverflowRate = tx.effectiveFeePerVsize;
-            rateThreshold = (Math.ceil(maxOverflowRate * 100) / 100) + 0.005;
-          }
-        } else if (tx.effectiveFeePerVsize <= rateThreshold) { // tolerance of 0.01 sat/vb + rounding
-          if (isCensored[txid]) {
-            delete isCensored[txid];
-          }
-        }
-        overflowWeightRemaining -= (mempool[txid]?.weight || 0);
-      } else {
-        logger.warn('projected transaction missing from mempool cache');
-      }
-      index--;
-    }
-
-    const numCensored = Object.keys(isCensored).length;
-    const numMatches = matches.length - 1; // adjust for coinbase tx
-    let score = 0;
-    if (numMatches <= 0 && numCensored <= 0) {
-      score = 1;
-    } else if (numMatches > 0) {
-      score = (numMatches / (numMatches + numCensored));
-    }
-    const similarity = projectedWeight ? matchedWeight / projectedWeight : 1;
-
-    return {
-      censored: Object.keys(isCensored),
-      added,
-      fresh,
-      sigop: [],
-      fullrbf: rbf,
-      accelerated,
-      score,
-      similarity,
-    };
-  }
-}
-
-export default new Audit();

backend/src/api/backend-info.ts

@@ -1,39 +1,46 @@
-import fs from 'fs';
-import path from 'path';
-import os from 'os';
+import * as fs from 'fs';
+import * as os from 'os';
+import logger from '../logger';
 import { IBackendInfo } from '../mempool.interfaces';
-import config from '../config';
 
 class BackendInfo {
-  private backendInfo: IBackendInfo;
+  private gitCommitHash = '';
+  private hostname = '';
+  private version = '';
 
   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
-    };
+    this.setLatestCommitHash();
+    this.setVersion();
+    this.hostname = os.hostname();
   }
 
   public getBackendInfo(): IBackendInfo {
-    return this.backendInfo;
+    return {
+      hostname: this.hostname,
+      gitCommit: this.gitCommitHash,
+      version: this.version,
+    };
   }
 
   public getShortCommitHash() {
-    return this.backendInfo.gitCommit.slice(0, 7);
+    return this.gitCommitHash.slice(0, 7);
+  }
+
+  private setLatestCommitHash(): void {
+    try {
+      this.gitCommitHash = fs.readFileSync('../.git/refs/heads/master').toString().trim();
+    } catch (e) {
+      logger.err('Could not load git commit info: ' + (e instanceof Error ? e.message : e));
+    }
+  }
+
+  private setVersion(): void {
+    try {
+      const packageJson = fs.readFileSync('package.json').toString();
+      this.version = JSON.parse(packageJson).version;
+    } catch (e) {
+      throw new Error(e instanceof Error ? e.message : 'Error');
+    }
   }
 }
 

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

@@ -1,13 +1,10 @@
 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 axios from 'axios';
 import { BisqBlocks, BisqBlock, BisqTransaction, BisqStats, BisqTrade } from './interfaces';
 import { Common } from '../common';
 import { BlockExtended } from '../../mempool.interfaces';
-import backendInfo from '../backend-info';
+import { StaticPool } from 'node-worker-threads-pool';
 import logger from '../../logger';
 
 class Bisq {
@@ -30,17 +27,15 @@ class Bisq {
   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.checkForBisqDataFolder();
     this.loadBisqDumpFile();
     setInterval(this.updatePrice.bind(this), 1000 * 60 * 60);
     this.updatePrice();
@@ -95,7 +90,7 @@ class Bisq {
   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`);
+      return process.exit(1);
     }
   }
 
@@ -142,59 +137,12 @@ class Bisq {
       }, 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}`);
-        }
+  private updatePrice() {
+    axios.get<BisqTrade[]>('https://bisq.markets/api/trades/?market=bsq_btc', { timeout: 10000 })
+      .then((response) => {
         const prices: number[] = [];
-        data.data.forEach((trade) => {
+        response.data.forEach((trade) => {
           prices.push(parseFloat(trade.price) * 100000000);
         });
         prices.sort((a, b) => a - b);
@@ -202,24 +150,19 @@ class Bisq {
         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++;
-      }
-    }
+    }).catch((err) => {
+      logger.err('Error updating Bisq market price: ' + err);
+    });
   }
 
   private async loadBisqDumpFile(): Promise<void> {
-    this.allBlocks = [];
     try {
-      await this.loadData();
+      const data = await this.loadData();
+      await this.loadBisqBlocksDump(data);
       this.buildIndex();
       this.calculateStats();
     } catch (e) {
-      logger.info('Cannot load bisq dump file because: ' + (e instanceof Error ? e.message : e));
+      logger.info('loadBisqDumpFile() error.' + (e instanceof Error ? e.message : e));
     }
   }
 
@@ -298,61 +241,36 @@ class Bisq {
     };
   }
 
-  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;
+  private async loadBisqBlocksDump(cacheData: string): Promise<void> {
     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 (cacheData && cacheData.length !== 0) {
+      logger.debug('Processing Bisq data dump...');
+      const data: BisqBlocks = await this.jsonParsePool.exec(cacheData);
+      if (data.blocks && data.blocks.length !== this.allBlocks.length) {
+        this.allBlocks = data.blocks;
+        this.allBlocks.reverse();
+        this.blocks = this.allBlocks.filter((block) => block.txs.length > 0);
+        this.latestBlockHeight = data.chainHeight;
+        const time = new Date().getTime() - start;
+        logger.debug('Bisq dump processed in ' + time + ' ms (worker thread)');
+      } else {
+        throw new Error(`Bisq dump didn't contain any blocks`);
       }
+    }
+  }
 
-      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));
+  private loadData(): Promise<string> {
+    return new Promise((resolve, reject) => {
+      if (!fs.existsSync(Bisq.BLOCKS_JSON_FILE_PATH)) {
+        return reject(Bisq.BLOCKS_JSON_FILE_PATH + ` doesn't exist`);
+      }
+      fs.readFile(Bisq.BLOCKS_JSON_FILE_PATH, 'utf8', (err, data) => {
+        if (err) {
+          reject(err);
         }
-      }
-
-      if (readingBlock === true) {
-        blockBuffer += line;
-      }
-
-      ++lineCount;
+        resolve(data);
+      });
     });
-
-    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');
   }
 }
 

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

@@ -1,7 +1,7 @@
 import { Currencies, OffersData, TradesData, Depth, Currency, Interval, HighLowOpenClose,
   Markets, Offers, Offer, BisqTrade, MarketVolume, Tickers, Ticker, SummarizedIntervals, SummarizedInterval } from './interfaces';
 
-const strtotime = require('./strtotime');
+import * as datetime from 'locutus/php/datetime';
 
 class BisqMarketsApi {
   private cryptoCurrencyData: Currency[] = [];
@@ -312,7 +312,7 @@ class BisqMarketsApi {
 
   getTickerFromMarket(market: string): Ticker | null {
     let ticker: Ticker;
-    const timestamp_from = strtotime('-24 hour');
+    const timestamp_from = datetime.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);
@@ -638,13 +638,13 @@ class BisqMarketsApi {
         case 'half_day':
             return (ts - (ts % (3600 * 12)));
         case 'day':
-            return strtotime('midnight today', ts);
+            return datetime.strtotime('midnight today', ts);
         case 'week':
-            return strtotime('midnight sunday last week', ts);
+            return datetime.strtotime('midnight sunday last week', ts);
         case 'month':
-            return strtotime('midnight first day of this month', ts);
+            return datetime.strtotime('midnight first day of this month', ts);
         case 'year':
-            return strtotime('midnight first day of january', ts);
+            return datetime.strtotime('midnight first day of january', ts);
         default:
             throw new Error('Unsupported interval: ' + interval);
     }

backend/src/api/bisq/markets.ts

@@ -26,13 +26,7 @@ class Bisq {
   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.checkForBisqDataFolder();
     this.loadBisqDumpFile();
     this.startBisqDirectoryWatcher();
   }
@@ -40,7 +34,7 @@ class Bisq {
   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`);
+      return process.exit(1);
     }
   }
 

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

@@ -1,34 +1,18 @@
-import { IBitcoinApi } from './bitcoin-api.interface';
 import { IEsploraApi } from './esplora-api.interface';
 
 export interface AbstractBitcoinApi {
   $getRawMempool(): Promise<IEsploraApi.Transaction['txid'][]>;
-  $getRawTransaction(txId: string, skipConversion?: boolean, addPrevout?: boolean, lazyPrevouts?: boolean): Promise<IEsploraApi.Transaction>;
-  $getRawTransactions(txids: string[]): Promise<IEsploraApi.Transaction[]>;
-  $getMempoolTransactions(txids: string[]): Promise<IEsploraApi.Transaction[]>;
-  $getAllMempoolTransactions(lastTxid?: string, max_txs?: number);
-  $getTransactionHex(txId: string): Promise<string>;
+  $getRawTransaction(txId: string, skipConversion?: boolean, addPrevout?: boolean): Promise<IEsploraApi.Transaction>;
   $getBlockHeightTip(): Promise<number>;
-  $getBlockHashTip(): Promise<string>;
   $getTxIdsForBlock(hash: string): Promise<string[]>;
-  $getTxsForBlock(hash: string): Promise<IEsploraApi.Transaction[]>;
   $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[];
-  $getScriptHash(scripthash: string): Promise<IEsploraApi.ScriptHash>;
-  $getScriptHashTransactions(address: string, lastSeenTxId: string): Promise<IEsploraApi.Transaction[]>;
   $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[][]>;
-  $getBatchedOutspendsInternal(txId: string[]): Promise<IEsploraApi.Outspend[][]>;
-  $getOutSpendsByOutpoint(outpoints: { txid: string, vout: number }[]): Promise<IEsploraApi.Outspend[]>;
-
-  startHealthChecks(): void;
 }
 export interface BitcoinRpcCredentials {
   host: string;
@@ -36,5 +20,4 @@ export interface BitcoinRpcCredentials {
   user: string;
   pass: string;
   timeout: number;
-  cookie?: string;
 }

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

@@ -17,6 +17,4 @@ function bitcoinApiFactory(): AbstractBitcoinApi {
   }
 }
 
-export const bitcoinCoreApi = new BitcoinApi(bitcoinClient);
-
 export default bitcoinApiFactory();

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

@@ -4,7 +4,6 @@ export namespace IBitcoinApi {
     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
@@ -73,14 +72,6 @@ export namespace IBitcoinApi {
     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)
@@ -172,35 +163,4 @@ export namespace IBitcoinApi {
     }
   }
 
-  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

@@ -5,7 +5,6 @@ import { IEsploraApi } from './esplora-api.interface';
 import blocks from '../blocks';
 import mempool from '../mempool';
 import { TransactionExtended } from '../../mempool.interfaces';
-import transactionUtils from '../transaction-utils';
 
 class BitcoinApi implements AbstractBitcoinApi {
   private rawMempoolCache: IBitcoinApi.RawMempool | null = null;
@@ -15,91 +14,33 @@ class BitcoinApi implements AbstractBitcoinApi {
     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,
-      stale: block.confirmations === -1,
-    };
-  }
-
-
-  $getRawTransaction(txId: string, skipConversion = false, addPrevout = false, lazyPrevouts = false): Promise<IEsploraApi.Transaction> {
+  $getRawTransaction(txId: string, skipConversion = false, addPrevout = false): Promise<IEsploraApi.Transaction> {
     // If the transaction is in the mempool we already converted and fetched the fee. Only prevouts are missing
     const txInMempool = mempool.getMempool()[txId];
     if (txInMempool && addPrevout) {
       return this.$addPrevouts(txInMempool);
     }
 
+    // Special case to fetch the Coinbase transaction
+    if (txId === '4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b') {
+      return this.$returnCoinbaseTransaction();
+    }
+
     return this.bitcoindClient.getRawTransaction(txId, true)
       .then((transaction: IBitcoinApi.Transaction) => {
         if (skipConversion) {
           transaction.vout.forEach((vout) => {
-            vout.value = Math.round(vout.value * 100000000);
+            vout.value = vout.value * 100000000;
           });
           return transaction;
         }
-        return this.$convertTransaction(transaction, addPrevout, lazyPrevouts);
-      })
-      .catch((e: Error) => {
-        if (e.message.startsWith('The genesis block coinbase')) {
-          return this.$returnCoinbaseTransaction();
-        }
-        throw e;
-      });
-  }
-
-  async $getRawTransactions(txids: string[]): Promise<IEsploraApi.Transaction[]> {
-    const txs: IEsploraApi.Transaction[] = [];
-    for (const txid of txids) {
-      try {
-        const tx = await this.$getRawTransaction(txid, false, true);
-        txs.push(tx);
-      } catch (err) {
-        // skip failures
-      }
-    }
-    return txs;
-  }
-
-  $getMempoolTransactions(txids: string[]): Promise<IEsploraApi.Transaction[]> {
-    throw new Error('Method getMempoolTransactions not supported by the Bitcoin RPC API.');
-  }
-
-  $getAllMempoolTransactions(lastTxid?: string, max_txs?: number): Promise<IEsploraApi.Transaction[]> {
-    throw new Error('Method getAllMempoolTransactions not supported by the Bitcoin RPC API.');
-
-  }
-
-  async $getTransactionHex(txId: string): Promise<string> {
-    const txInMempool = mempool.getMempool()[txId];
-    if (txInMempool && txInMempool.hex) {
-      return txInMempool.hex;
-    }
-
-    return this.bitcoindClient.getRawTransaction(txId, true)
-      .then((transaction: IBitcoinApi.Transaction) => {
-        return transaction.hex;
+        return this.$convertTransaction(transaction, addPrevout);
       });
   }
 
   $getBlockHeightTip(): Promise<number> {
-    return this.bitcoindClient.getBlockCount();
-  }
-
-  $getBlockHashTip(): Promise<string> {
-    return this.bitcoindClient.getBestBlockHash();
+    return this.bitcoindClient.getChainTips()
+      .then((result: IBitcoinApi.ChainTips[]) => result[0].height);
   }
 
   $getTxIdsForBlock(hash: string): Promise<string[]> {
@@ -107,13 +48,8 @@ class BitcoinApi implements AbstractBitcoinApi {
       .then((rpcBlock: IBitcoinApi.Block) => rpcBlock.tx);
   }
 
-  $getTxsForBlock(hash: string): Promise<IEsploraApi.Transaction[]> {
-    throw new Error('Method getTxsForBlock not supported by the Bitcoin RPC API.');
-  }
-
-  $getRawBlock(hash: string): Promise<Buffer> {
-    return this.bitcoindClient.getBlock(hash, 0)
-      .then((raw: string) => Buffer.from(raw, "hex"));
+  $getRawBlock(hash: string): Promise<string> {
+    return this.bitcoindClient.getBlock(hash, 0);
   }
 
   $getBlockHash(height: number): Promise<string> {
@@ -131,7 +67,7 @@ class BitcoinApi implements AbstractBitcoinApi {
     }
 
     return this.bitcoindClient.getBlock(hash)
-      .then((block: IBitcoinApi.Block) => BitcoinApi.convertBlock(block));
+      .then((block: IBitcoinApi.Block) => this.convertBlock(block));
   }
 
   $getAddress(address: string): Promise<IEsploraApi.Address> {
@@ -142,94 +78,43 @@ class BitcoinApi implements AbstractBitcoinApi {
     throw new Error('Method getAddressTransactions not supported by the Bitcoin RPC API.');
   }
 
-  $getScriptHash(scripthash: string): Promise<IEsploraApi.ScriptHash> {
-    throw new Error('Method getScriptHash not supported by the Bitcoin RPC API.');
-  }
-
-  $getScriptHashTransactions(scripthash: string, lastSeenTxId: string): Promise<IEsploraApi.Transaction[]> {
-    throw new Error('Method getScriptHashTransactions 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 found: 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);
+          found.push(vout.scriptpubkey_address);
+          if (found.length >= 10) {
+            return found;
           }
         }
       }
     }
-    return Object.keys(found);
+    return 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,
-        });
-      }
+      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;
-  }
-
-  async $getBatchedOutspendsInternal(txId: string[]): Promise<IEsploraApi.Outspend[][]> {
-    return this.$getBatchedOutspends(txId);
-  }
-
-  async $getOutSpendsByOutpoint(outpoints: { txid: string, vout: number }[]): Promise<IEsploraApi.Outspend[]> {
-    const outspends: IEsploraApi.Outspend[] = [];
-    for (const outpoint of outpoints) {
-      const outspend = await this.$getOutspend(outpoint.txid, outpoint.vout);
-      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> {
+  protected async $convertTransaction(transaction: IBitcoinApi.Transaction, addPrevout: boolean): Promise<IEsploraApi.Transaction> {
     let esploraTransaction: IEsploraApi.Transaction = {
       txid: transaction.txid,
       version: transaction.version,
@@ -244,11 +129,11 @@ class BitcoinApi implements AbstractBitcoinApi {
 
     esploraTransaction.vout = transaction.vout.map((vout) => {
       return {
-        value: Math.round(vout.value * 100000000),
+        value: 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 ? transactionUtils.convertScriptSigAsm(vout.scriptPubKey.hex) : '',
+        scriptpubkey_asm: vout.scriptPubKey.asm ? this.convertScriptSigAsm(vout.scriptPubKey.asm) : '',
         scriptpubkey_type: this.translateScriptPubKeyType(vout.scriptPubKey.type),
       };
     });
@@ -258,13 +143,11 @@ class BitcoinApi implements AbstractBitcoinApi {
         is_coinbase: !!vin.coinbase,
         prevout: null,
         scriptsig: vin.scriptSig && vin.scriptSig.hex || vin.coinbase || '',
-        scriptsig_asm: vin.scriptSig && transactionUtils.convertScriptSigAsm(vin.scriptSig.hex) || '',
+        scriptsig_asm: vin.scriptSig && this.convertScriptSigAsm(vin.scriptSig.asm) || '',
         sequence: vin.sequence,
         txid: vin.txid || '',
         vout: vin.vout || 0,
-        witness: vin.txinwitness || [],
-        inner_redeemscript_asm: '',
-        inner_witnessscript_asm: '',
+        witness: vin.txinwitness,
       };
     });
 
@@ -277,15 +160,35 @@ class BitcoinApi implements AbstractBitcoinApi {
       };
     }
 
-    if (addPrevout) {
-      esploraTransaction = await this.$calculateFeeFromInputs(esploraTransaction, false, lazyPrevouts);
-    } else if (!transaction.confirmations) {
+    if (transaction.confirmations) {
+      esploraTransaction = await this.$calculateFeeFromInputs(esploraTransaction, addPrevout);
+    } else {
       esploraTransaction = await this.$appendMempoolFeeData(esploraTransaction);
+      if (addPrevout) {
+        esploraTransaction = await this.$calculateFeeFromInputs(esploraTransaction, addPrevout);
+      }
     }
 
     return esploraTransaction;
   }
 
+  private 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,
+    };
+  }
+
   private translateScriptPubKeyType(outputType: string): string {
     const map = {
       'pubkey': 'p2pk',
@@ -295,14 +198,13 @@ class BitcoinApi implements AbstractBitcoinApi {
       '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';
+      return '';
     }
   }
 
@@ -319,7 +221,7 @@ class BitcoinApi implements AbstractBitcoinApi {
     } else {
       mempoolEntry = await this.$getMempoolEntry(transaction.txid);
     }
-    transaction.fee = Math.round(mempoolEntry.fees.base * 100000000);
+    transaction.fee = mempoolEntry.fees.base * 100000000;
     return transaction;
   }
 
@@ -328,22 +230,20 @@ class BitcoinApi implements AbstractBitcoinApi {
       if (vin.prevout) {
         continue;
       }
-      const innerTx = await this.$getRawTransaction(vin.txid, false, false);
+      const innerTx = await this.$getRawTransaction(vin.txid, false);
       vin.prevout = innerTx.vout[vin.vout];
-      transactionUtils.addInnerScriptsToVin(vin);
+      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);
-        })
-    );
+    return this.bitcoindClient.getBlock('000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f', 2)
+      .then((block: IBitcoinApi.Block) => {
+        return this.$convertTransaction(Object.assign(block.tx[0], {
+          confirmations: blocks.getCurrentBlockHeight() + 1,
+          blocktime: 1231006505 }), false);
+      });
   }
 
   private $getMempoolEntry(txid: string): Promise<IBitcoinApi.MempoolEntry> {
@@ -354,34 +254,70 @@ class BitcoinApi implements AbstractBitcoinApi {
     return this.bitcoindClient.getRawMemPool(true);
   }
 
-
-  private async $calculateFeeFromInputs(transaction: IEsploraApi.Transaction, addPrevout: boolean, lazyPrevouts: boolean): Promise<IEsploraApi.Transaction> {
+  private async $calculateFeeFromInputs(transaction: IEsploraApi.Transaction, addPrevout: boolean): Promise<IEsploraApi.Transaction> {
     if (transaction.vin[0].is_coinbase) {
       transaction.fee = 0;
       return transaction;
     }
     let totalIn = 0;
-
-    for (let i = 0; i < transaction.vin.length; i++) {
-      if (lazyPrevouts && i > 12) {
-        transaction.vin[i].lazy = true;
-        continue;
+    for (const vin of transaction.vin) {
+      const innerTx = await this.$getRawTransaction(vin.txid, !addPrevout);
+      if (addPrevout) {
+        vin.prevout = innerTx.vout[vin.vout];
+        this.addInnerScriptsToVin(vin);
       }
-      const innerTx = await this.$getRawTransaction(transaction.vin[i].txid, false, false);
-      transaction.vin[i].prevout = innerTx.vout[transaction.vin[i].vout];
-      transactionUtils.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));
+      totalIn += innerTx.vout[vin.vout].value;
     }
+    const totalOut = transaction.vout.reduce((p, output) => p + output.value, 0);
+    transaction.fee = parseFloat((totalIn - totalOut).toFixed(8));
     return transaction;
   }
 
-  public startHealthChecks(): void {};
+  private convertScriptSigAsm(str: string): string {
+    const a = str.split(' ');
+    const b: string[] = [];
+    a.forEach((chunk) => {
+      if (chunk.substr(0, 3) === 'OP_') {
+        chunk = chunk.replace(/^OP_(\d+)/, 'OP_PUSHNUM_$1');
+        chunk = chunk.replace('OP_CHECKSEQUENCEVERIFY', 'OP_CSV');
+        b.push(chunk);
+      } else {
+        chunk = chunk.replace('[ALL]', '01');
+        if (chunk === '0') {
+          b.push('OP_0');
+        } else {
+          b.push('OP_PUSHBYTES_' + Math.round(chunk.length / 2) + ' ' + chunk);
+        }
+      }
+    });
+    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(bitcoinjs.script.toASM(Buffer.from(redeemScript, 'hex')));
+      if (vin.witness && vin.witness.length > 2) {
+        const witnessScript = vin.witness[vin.witness.length - 1];
+        vin.inner_witnessscript_asm = this.convertScriptSigAsm(bitcoinjs.script.toASM(Buffer.from(witnessScript, 'hex')));
+      }
+    }
+
+    if (vin.prevout.scriptpubkey_type === 'v0_p2wsh' && vin.witness) {
+      const witnessScript = vin.witness[vin.witness.length - 1];
+      vin.inner_witnessscript_asm = this.convertScriptSigAsm(bitcoinjs.script.toASM(Buffer.from(witnessScript, 'hex')));
+    }
+
+    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(bitcoinjs.script.toASM(Buffer.from(witnessScript, 'hex')));
+    }
+  }
+
 }
 
 export default BitcoinApi;

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

@@ -1,5 +1,5 @@
 import config from '../../config';
-const bitcoin = require('../../rpc-api/index');
+import * as bitcoin from '@mempool/bitcoin';
 import { BitcoinRpcCredentials } from './bitcoin-api-abstract-factory';
 
 const nodeRpcCredentials: BitcoinRpcCredentials = {
@@ -7,8 +7,7 @@ const nodeRpcCredentials: BitcoinRpcCredentials = {
   port: config.CORE_RPC.PORT,
   user: config.CORE_RPC.USERNAME,
   pass: config.CORE_RPC.PASSWORD,
-  timeout: config.CORE_RPC.TIMEOUT,
-  cookie: config.CORE_RPC.COOKIE ? config.CORE_RPC.COOKIE_PATH : undefined,
+  timeout: 60000,
 };
 
 export default new bitcoin.Client(nodeRpcCredentials);

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

@@ -1,249 +0,0 @@
-import { Application, NextFunction, Request, Response } from 'express';
-import logger from '../../logger';
-import bitcoinClient from './bitcoin-client';
-
-/**
- * Define a set of routes used by the accelerator server
- * Those routes are not designed to be public
- */
-class BitcoinBackendRoutes {
-  private static tag = 'BitcoinBackendRoutes';
-
-  public initRoutes(app: Application) {
-    app
-      .get('/api/internal/bitcoin-core/' + 'get-mempool-entry', this.disableCache, this.$getMempoolEntry)
-      .post('/api/internal/bitcoin-core/' + 'decode-raw-transaction', this.disableCache, this.$decodeRawTransaction)
-      .get('/api/internal/bitcoin-core/' + 'get-raw-transaction', this.disableCache, this.$getRawTransaction)
-      .post('/api/internal/bitcoin-core/' + 'send-raw-transaction', this.disableCache, this.$sendRawTransaction)
-      .post('/api/internal/bitcoin-core/' + 'test-mempool-accept', this.disableCache, this.$testMempoolAccept)
-      .get('/api/internal/bitcoin-core/' + 'get-mempool-ancestors', this.disableCache, this.$getMempoolAncestors)
-      .get('/api/internal/bitcoin-core/' + 'get-block', this.disableCache, this.$getBlock)
-      .get('/api/internal/bitcoin-core/' + 'get-block-hash', this.disableCache, this.$getBlockHash)
-      .get('/api/internal/bitcoin-core/' + 'get-block-count', this.disableCache, this.$getBlockCount)
-    ;
-  }
-
-  /**
-   * Disable caching for bitcoin core routes
-   * 
-   * @param req 
-   * @param res 
-   * @param next 
-   */
-  private disableCache(req: Request, res: Response, next: NextFunction): void  {
-    res.setHeader('Pragma', 'no-cache');
-    res.setHeader('Cache-control', 'private, no-store, no-cache, must-revalidate, proxy-revalidate, max-age=0');
-    res.setHeader('expires', -1);
-    next();
-  }
-
-  /**
-   * Exeption handler to return proper details to the accelerator server
-   * 
-   * @param e 
-   * @param fnName 
-   * @param res 
-   */
-  private static handleException(e: any, fnName: string, res: Response): void {
-    if (typeof(e.code) === 'number') {
-      res.status(400).send(JSON.stringify(e, ['code', 'message']));
-    } else {     
-      const err = `exception in ${fnName}. ${e}. Details: ${JSON.stringify(e, ['code', 'message'])}`; 
-      logger.err(err, BitcoinBackendRoutes.tag);
-      res.status(500).send(err);
-    }
-  }
-
-  private async $getMempoolEntry(req: Request, res: Response): Promise<void> {
-    const txid = req.query.txid;
-    try {
-      if (typeof(txid) !== 'string' || txid.length !== 64) {
-        res.status(400).send(`invalid param txid ${txid}. must be a string of 64 char`);
-        return;
-      }
-      const mempoolEntry = await bitcoinClient.getMempoolEntry(txid);
-      if (!mempoolEntry) {
-        res.status(404).send(`no mempool entry found for txid ${txid}`);
-        return;
-      }
-      res.status(200).send(mempoolEntry);
-    } catch (e: any) {
-      BitcoinBackendRoutes.handleException(e, 'getMempoolEntry', res);
-    }
-  }
-
-  private async $decodeRawTransaction(req: Request, res: Response): Promise<void> {
-    const rawTx = req.body.rawTx;
-    try {
-      if (typeof(rawTx) !== 'string') {
-        res.status(400).send(`invalid param rawTx ${rawTx}. must be a string`);
-        return;
-      }
-      const decodedTx = await bitcoinClient.decodeRawTransaction(rawTx);
-      if (!decodedTx) {
-        res.status(400).send(`unable to decode rawTx ${rawTx}`);
-        return;
-      }
-      res.status(200).send(decodedTx);
-    } catch (e: any) {
-      BitcoinBackendRoutes.handleException(e, 'decodeRawTransaction', res);
-    }
-  }
-
-  private async $getRawTransaction(req: Request, res: Response): Promise<void> {
-    const txid = req.query.txid;
-    const verbose = req.query.verbose;
-    try {
-      if (typeof(txid) !== 'string' || txid.length !== 64) {
-        res.status(400).send(`invalid param txid ${txid}. must be a string of 64 char`);
-        return;
-      }
-      if (typeof(verbose) !== 'string') {
-        res.status(400).send(`invalid param verbose ${verbose}. must be a string representing an integer`);
-        return;
-      }
-      const verboseNumber = parseInt(verbose, 10);
-      if (typeof(verboseNumber) !== 'number') {
-        res.status(400).send(`invalid param verbose ${verbose}. must be a valid integer`);
-        return;
-      }
-
-      const decodedTx = await bitcoinClient.getRawTransaction(txid, verboseNumber);
-      if (!decodedTx) {
-        res.status(400).send(`unable to get raw transaction for txid ${txid}`);
-        return;
-      }
-      res.status(200).send(decodedTx);
-    } catch (e: any) {
-      BitcoinBackendRoutes.handleException(e, 'decodeRawTransaction', res);
-    }
-  }
-
-  private async $sendRawTransaction(req: Request, res: Response): Promise<void> {
-    const rawTx = req.body.rawTx;
-    try {
-      if (typeof(rawTx) !== 'string') {
-        res.status(400).send(`invalid param rawTx ${rawTx}. must be a string`);
-        return;
-      }
-      const txHex = await bitcoinClient.sendRawTransaction(rawTx);
-      if (!txHex) {
-        res.status(400).send(`unable to send rawTx ${rawTx}`);
-        return;
-      }
-      res.status(200).send(txHex);
-    } catch (e: any) {
-      BitcoinBackendRoutes.handleException(e, 'sendRawTransaction', res);
-    }
-  }
-
-  private async $testMempoolAccept(req: Request, res: Response): Promise<void> {
-    const rawTxs = req.body.rawTxs;
-    try {
-      if (typeof(rawTxs) !== 'object') {
-        res.status(400).send(`invalid param rawTxs ${JSON.stringify(rawTxs)}. must be an array of string`);
-        return;
-      }
-      const txHex = await bitcoinClient.testMempoolAccept(rawTxs);
-      if (typeof(txHex) !== 'object' || txHex.length === 0) {
-        res.status(400).send(`testmempoolaccept failed for raw txs ${JSON.stringify(rawTxs)}, got an empty result`);
-        return;
-      }
-      res.status(200).send(txHex);
-    } catch (e: any) {
-      BitcoinBackendRoutes.handleException(e, 'testMempoolAccept', res);
-    }
-  }
-
-  private async $getMempoolAncestors(req: Request, res: Response): Promise<void> {
-    const txid = req.query.txid;
-    const verbose = req.query.verbose;
-    try {
-      if (typeof(txid) !== 'string' || txid.length !== 64) {
-        res.status(400).send(`invalid param txid ${txid}. must be a string of 64 char`);
-        return;
-      }
-      if (typeof(verbose) !== 'string' || (verbose !== 'true' && verbose !== 'false')) {
-        res.status(400).send(`invalid param verbose ${verbose}. must be a string ('true' | 'false')`);
-        return;
-      }
-    
-      const ancestors = await bitcoinClient.getMempoolAncestors(txid, verbose === 'true' ? true : false);
-      if (!ancestors) {
-        res.status(400).send(`unable to get mempool ancestors for txid ${txid}`);
-        return;
-      }
-      res.status(200).send(ancestors);
-    } catch (e: any) {
-      BitcoinBackendRoutes.handleException(e, 'getMempoolAncestors', res);
-    }
-  }
-
-  private async $getBlock(req: Request, res: Response): Promise<void> {
-    const blockHash = req.query.hash;
-    const verbosity = req.query.verbosity;
-    try {
-      if (typeof(blockHash) !== 'string' || blockHash.length !== 64) {
-        res.status(400).send(`invalid param blockHash ${blockHash}. must be a string of 64 char`);
-        return;
-      }
-      if (typeof(verbosity) !== 'string') {
-        res.status(400).send(`invalid param verbosity ${verbosity}. must be a string representing an integer`);
-        return;
-      }
-      const verbosityNumber = parseInt(verbosity, 10);
-      if (typeof(verbosityNumber) !== 'number') {
-        res.status(400).send(`invalid param verbosity ${verbosity}. must be a valid integer`);
-        return;
-      }
-
-      const block = await bitcoinClient.getBlock(blockHash, verbosityNumber);
-      if (!block) {
-        res.status(400).send(`unable to get block for block hash ${blockHash}`);
-        return;
-      }
-      res.status(200).send(block);
-    } catch (e: any) {
-      BitcoinBackendRoutes.handleException(e, 'getBlock', res);
-    }
-  }
-
-  private async $getBlockHash(req: Request, res: Response): Promise<void> {
-    const blockHeight = req.query.height;
-    try {
-      if (typeof(blockHeight) !== 'string') {
-        res.status(400).send(`invalid param blockHeight ${blockHeight}, must be a string representing an integer`);
-        return;
-      }
-      const blockHeightNumber = parseInt(blockHeight, 10);
-      if (typeof(blockHeightNumber) !== 'number') {
-        res.status(400).send(`invalid param blockHeight ${blockHeight}. must be a valid integer`);
-        return;
-      }
-
-      const block = await bitcoinClient.getBlockHash(blockHeightNumber);
-      if (!block) {
-        res.status(400).send(`unable to get block hash for block height ${blockHeightNumber}`);
-        return;
-      }
-      res.status(200).send(block);
-    } catch (e: any) {
-      BitcoinBackendRoutes.handleException(e, 'getBlockHash', res);
-    }
-  }
-
-  private async $getBlockCount(req: Request, res: Response): Promise<void> {
-    try {
-      const count = await bitcoinClient.getBlockCount();
-      if (!count) {
-        res.status(400).send(`unable to get block count`);
-        return;
-      }
-      res.status(200).send(`${count}`);
-    } catch (e: any) {
-      BitcoinBackendRoutes.handleException(e, 'getBlockCount', res);
-    }
-  }
-}
-
-export default new BitcoinBackendRoutes

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

@@ -1,5 +1,5 @@
 import config from '../../config';
-const bitcoin = require('../../rpc-api/index');
+import * as bitcoin from '@mempool/bitcoin';
 import { BitcoinRpcCredentials } from './bitcoin-api-abstract-factory';
 
 const nodeRpcCredentials: BitcoinRpcCredentials = {
@@ -7,8 +7,7 @@ const nodeRpcCredentials: BitcoinRpcCredentials = {
   port: config.SECOND_CORE_RPC.PORT,
   user: config.SECOND_CORE_RPC.USERNAME,
   pass: config.SECOND_CORE_RPC.PASSWORD,
-  timeout: config.SECOND_CORE_RPC.TIMEOUT,
-  cookie: config.SECOND_CORE_RPC.COOKIE ? config.SECOND_CORE_RPC.COOKIE_PATH : undefined,
+  timeout: 60000,
 };
 
 export default new bitcoin.Client(nodeRpcCredentials);

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

@@ -1,791 +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 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 + 'cpfp/:txId', this.$getCpfpInfo)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'difficulty-adjustment', this.getDifficultyChange)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'fees/recommended', this.getRecommendedFees)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'fees/mempool-blocks', this.getMempoolBlocks)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'backend-info', this.getBackendInfo)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'init-data', this.getInitData)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'validate-address/:address', this.validateAddress)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'tx/:txId/rbf', this.getRbfHistory)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'tx/:txId/cached', this.getCachedTx)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'replacements', this.getRbfReplacements)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'fullrbf/replacements', this.getFullRbfReplacements)
-      .post(config.MEMPOOL.API_URL_PREFIX + 'tx/push', this.$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/${req.params.id}`, {
-            responseType: 'stream', timeout: 10000
-          });
-          response.data.pipe(res);
-        } catch (e) {
-          res.status(500).end();
-        }
-      })
-      .get(config.MEMPOOL.API_URL_PREFIX + 'blocks', this.getBlocks.bind(this))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'blocks/:height', this.getBlocks.bind(this))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash', this.getBlock)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/summary', this.getStrippedBlockTransactions)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/audit-summary', this.getBlockAuditSummary)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'blocks/tip/height', this.getBlockTipHeight)
-      .post(config.MEMPOOL.API_URL_PREFIX + 'psbt/addparents', this.postPsbtCompletion)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'blocks-bulk/:from', this.getBlocksByBulk.bind(this))
-      .get(config.MEMPOOL.API_URL_PREFIX + 'blocks-bulk/:from/:to', this.getBlocksByBulk.bind(this))
-      ;
-
-      if (config.MEMPOOL.BACKEND !== 'esplora') {
-        app
-          .get(config.MEMPOOL.API_URL_PREFIX + 'mempool', this.getMempool)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'mempool/txids', this.getMempoolTxIds)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'mempool/recent', this.getRecentMempoolTransactions)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'tx/:txId', this.getTransaction)
-          .post(config.MEMPOOL.API_URL_PREFIX + 'tx', this.$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 + 'txs/outspends', this.$getBatchedOutspends)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'block/:hash/header', this.getBlockHeader)
-          .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 + 'scripthash/:scripthash', this.getScriptHash)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'scripthash/:scripthash/txs', this.getScriptHashTransactions)
-          .get(config.MEMPOOL.API_URL_PREFIX + 'address-prefix/:prefix', this.getAddressPrefix)
-          ;
-      }
-  }
-
-
-  private getInitData(req: Request, res: Response) {
-    try {
-      const result = websocketHandler.getSerializedInitData();
-      res.set('Content-Type', 'application/json');
-      res.send(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 $getBatchedOutspends(req: Request, res: Response): Promise<IEsploraApi.Outspend[][] | void> {
-    const txids_csv = req.query.txids;
-    if (!txids_csv || typeof txids_csv !== 'string') {
-      res.status(500).send('Invalid txids format');
-      return;
-    }
-    const txids = txids_csv.split(',');
-    if (txids.length > 50) {
-      res.status(400).send('Too many txids requested');
-      return;
-    }
-
-    try {
-      const batchedOutspends = await bitcoinApi.$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,
-          sigops: tx.sigops,
-          adjustedVsize: tx.adjustedVsize,
-          acceleration: tx.acceleration
-        });
-        return;
-      }
-
-      const cpfpInfo = Common.setRelativesAndGetCpfpInfo(tx, mempool.getMempool());
-
-      res.json(cpfpInfo);
-      return;
-    } else {
-      let cpfpInfo;
-      if (config.DATABASE.ENABLED) {
-        try {
-          cpfpInfo = await transactionRepository.$getCpfpInfo(req.params.txId);
-        } catch (e) {
-          res.status(500).send('failed to get CPFP info');
-          return;
-        }
-      }
-      if (cpfpInfo) {
-        res.json(cpfpInfo);
-        return;
-      } else {
-        res.json({
-          ancestors: []
-        });
-        return;
-      }
-    }
-  }
-
-  private getBackendInfo(req: Request, res: Response) {
-    res.json(backendInfo.getBackendInfo());
-  }
-
-  private async getTransaction(req: Request, res: Response) {
-    try {
-      const transaction = await transactionUtils.$getTransactionExtended(req.params.txId, true, false, false, 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.$getBlockHeader(req.params.hash);
-      res.setHeader('content-type', 'text/plain');
-      res.send(blockHeader);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getBlockAuditSummary(req: Request, res: Response) {
-    try {
-      const auditSummary = await blocks.$getBlockAuditSummary(req.params.hash);
-      if (auditSummary) {
-        res.setHeader('Expires', new Date(Date.now() + 1000 * 3600 * 24 * 30).toUTCString());
-        res.json(auditSummary);
-      } else {
-        return res.status(404).send(`audit not available`);
-      }
-    } 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.$getBlockHash(fromHeight);
-      }
-
-      let nextHash = startFromHash;
-      for (let i = 0; i < 15 && nextHash; i++) {
-        const localBlock = blocks.getBlocks().find((b) => b.id === nextHash);
-        if (localBlock) {
-          returnBlocks.push(localBlock);
-          nextHash = localBlock.previousblockhash;
-        } else {
-          const block = await bitcoinApi.$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): Promise<void> {
-    if (config.MEMPOOL.BACKEND === 'none') {
-      res.status(405).send('Address lookups cannot be used with bitcoind as backend.');
-      return;
-    }
-
-    try {
-      let lastTxId: string = '';
-      if (req.query.after_txid && typeof req.query.after_txid === 'string') {
-        lastTxId = req.query.after_txid;
-      }
-      const transactions = await bitcoinApi.$getAddressTransactions(req.params.address, lastTxId);
-      res.json(transactions);
-    } catch (e) {
-      if (e instanceof Error && e.message && (e.message.indexOf('too long') > 0 || e.message.indexOf('confirmed status') > 0)) {
-        res.status(413).send(e instanceof Error ? e.message : e);
-        return;
-      }
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getScriptHash(req: Request, res: Response) {
-    if (config.MEMPOOL.BACKEND === 'none') {
-      res.status(405).send('Address lookups cannot be used with bitcoind as backend.');
-      return;
-    }
-
-    try {
-      // electrum expects scripthashes in little-endian
-      const electrumScripthash = req.params.scripthash.match(/../g)?.reverse().join('') ?? '';
-      const addressData = await bitcoinApi.$getScriptHash(electrumScripthash);
-      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 getScriptHashTransactions(req: Request, res: Response): Promise<void> {
-    if (config.MEMPOOL.BACKEND === 'none') {
-      res.status(405).send('Address lookups cannot be used with bitcoind as backend.');
-      return;
-    }
-
-    try {
-      // electrum expects scripthashes in little-endian
-      const electrumScripthash = req.params.scripthash.match(/../g)?.reverse().join('') ?? '';
-      let lastTxId: string = '';
-      if (req.query.after_txid && typeof req.query.after_txid === 'string') {
-        lastTxId = req.query.after_txid;
-      }
-      const transactions = await bitcoinApi.$getScriptHashTransactions(electrumScripthash, lastTxId);
-      res.json(transactions);
-    } catch (e) {
-      if (e instanceof Error && e.message && (e.message.indexOf('too long') > 0 || e.message.indexOf('confirmed status') > 0)) {
-        res.status(413).send(e instanceof Error ? e.message : e);
-        return;
-      }
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getAddressPrefix(req: Request, res: Response) {
-    try {
-      const blockHash = await bitcoinApi.$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.$getRawMempool();
-      res.send(rawMempool);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private getBlockTipHeight(req: Request, res: Response) {
-    try {
-      const result = blocks.getCurrentBlockHeight();
-      if (!result) {
-        return res.status(503).send(`Service Temporarily Unavailable`);
-      }
-      res.setHeader('content-type', 'text/plain');
-      res.send(result.toString());
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getBlockTipHash(req: Request, res: Response) {
-    try {
-      const result = await bitcoinApi.$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 replacements = rbfCache.getRbfTree(req.params.txId) || null;
-      const replaces = rbfCache.getReplaces(req.params.txId) || null;
-      res.json({
-        replacements,
-        replaces
-      });
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getRbfReplacements(req: Request, res: Response) {
-    try {
-      const result = rbfCache.getRbfTrees(false);
-      res.json(result);
-    } catch (e) {
-      res.status(500).send(e instanceof Error ? e.message : e);
-    }
-  }
-
-  private async getFullRbfReplacements(req: Request, res: Response) {
-    try {
-      const result = rbfCache.getRbfTrees(true);
-      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 $postTransaction(req: Request, res: Response) {
-    res.setHeader('content-type', 'text/plain');
-    try {
-      const rawTx = Common.getTransactionFromRequest(req, false);
-      const txIdResult = await bitcoinApi.$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');
-    try {
-      const txHex = Common.getTransactionFromRequest(req, true);
-      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/electrum-api.ts

@@ -1,11 +1,12 @@
 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 * as ElectrumClient from '@mempool/electrum-client';
+import * as sha256 from 'crypto-js/sha256';
+import * as hexEnc from 'crypto-js/enc-hex';
 import loadingIndicators from '../loading-indicators';
 import memoryCache from '../memory-cache';
 
@@ -16,7 +17,7 @@ class BitcoindElectrsApi extends BitcoinApi implements AbstractBitcoinApi {
     super(bitcoinClient);
 
     const electrumConfig = { client: 'mempool-v2', version: '1.4' };
-    const electrumPersistencePolicy = { retryPeriod: 1000, maxRetry: Number.MAX_SAFE_INTEGER, callback: null };
+    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)})`); },
@@ -25,7 +26,7 @@ class BitcoindElectrsApi extends BitcoinApi implements AbstractBitcoinApi {
       onLog: (str) => { logger.debug(str); },
     };
 
-    this.electrumClient = new Client(
+    this.electrumClient = new ElectrumClient(
       config.ELECTRUM.PORT,
       config.ELECTRUM.HOST,
       config.ELECTRUM.TLS_ENABLED ? 'tls' : 'tcp',
@@ -34,7 +35,7 @@ class BitcoindElectrsApi extends BitcoinApi implements AbstractBitcoinApi {
     );
 
     this.electrumClient.initElectrum(electrumConfig, electrumPersistencePolicy)
-      .then(() => { })
+      .then(() => {})
       .catch((err) => {
         logger.err(`Error connecting to Electrum Server at ${config.ELECTRUM.HOST}:${config.ELECTRUM.PORT}`);
       });
@@ -94,7 +95,7 @@ class BitcoindElectrsApi extends BitcoinApi implements AbstractBitcoinApi {
   async $getAddressTransactions(address: string, lastSeenTxId: string): Promise<IEsploraApi.Transaction[]> {
     const addressInfo = await this.bitcoindClient.validateAddress(address);
     if (!addressInfo || !addressInfo.isvalid) {
-      return [];
+     return [];
     }
 
     try {
@@ -126,77 +127,6 @@ class BitcoindElectrsApi extends BitcoinApi implements AbstractBitcoinApi {
     }
   }
 
-  async $getScriptHash(scripthash: string): Promise<IEsploraApi.ScriptHash> {
-    try {
-      const balance = await this.electrumClient.blockchainScripthash_getBalance(scripthash);
-      let history = memoryCache.get<IElectrumApi.ScriptHashHistory[]>('Scripthash_getHistory', scripthash);
-      if (!history) {
-        history = await this.electrumClient.blockchainScripthash_getHistory(scripthash);
-        memoryCache.set('Scripthash_getHistory', scripthash, history, 2);
-      }
-
-      const unconfirmed = history ? history.filter((h) => h.fee).length : 0;
-
-      return {
-        'scripthash': scripthash,
-        '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 || 0) - 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 $getScriptHashTransactions(scripthash: string, lastSeenTxId?: string): Promise<IEsploraApi.Transaction[]> {
-    try {
-      loadingIndicators.setProgress('address-' + scripthash, 0);
-
-      const transactions: IEsploraApi.Transaction[] = [];
-      let history = memoryCache.get<IElectrumApi.ScriptHashHistory[]>('Scripthash_getHistory', scripthash);
-      if (!history) {
-        history = await this.electrumClient.blockchainScripthash_getHistory(scripthash);
-        memoryCache.set('Scripthash_getHistory', scripthash, history, 2);
-      }
-      if (!history) {
-        throw new Error('failed to get scripthash history');
-      }
-      history.sort((a, b) => (b.height || 9999999) - (a.height || 9999999));
-
-      let startingIndex = 0;
-      if (lastSeenTxId) {
-        const pos = history.findIndex((historicalTx) => historicalTx.tx_hash === lastSeenTxId);
-        if (pos) {
-          startingIndex = pos + 1;
-        }
-      }
-      const endIndex = Math.min(startingIndex + 10, history.length);
-
-      for (let i = startingIndex; i < endIndex; i++) {
-        const tx = await this.$getRawTransaction(history[i].tx_hash, false, true);
-        transactions.push(tx);
-        loadingIndicators.setProgress('address-' + scripthash, (i + 1) / endIndex * 100);
-      }
-
-      return transactions;
-    } catch (e: any) {
-      loadingIndicators.setProgress('address-' + scripthash, 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));
   }
@@ -214,8 +144,8 @@ class BitcoindElectrsApi extends BitcoinApi implements AbstractBitcoinApi {
   }
 
   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('');
+    const addrScripthash = hexEnc.stringify(sha256(hexEnc.parse(scriptPubKey)));
+    return addrScripthash.match(/.{2}/g).reverse().join('');
   }
 
 }

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

@@ -6,7 +6,6 @@ export namespace IEsploraApi {
     size: number;
     weight: number;
     fee: number;
-    sigops?: number;
     vin: Vin[];
     vout: Vout[];
     status: Status;
@@ -26,16 +25,14 @@ export namespace IEsploraApi {
     is_coinbase: boolean;
     scriptsig: string;
     scriptsig_asm: string;
-    inner_redeemscript_asm: string;
-    inner_witnessscript_asm: string;
+    inner_redeemscript_asm?: string;
+    inner_witnessscript_asm?: string;
     sequence: any;
-    witness: string[];
+    witness?: string[];
     prevout: Vout | null;
     // Elements
     is_pegin?: boolean;
     issuance?: Issuance;
-    // Custom
-    lazy?: boolean;
   }
 
   interface Issuance {
@@ -89,8 +86,6 @@ export namespace IEsploraApi {
     size: number;
     weight: number;
     previousblockhash: string;
-    mediantime: number;
-    stale: boolean;
   }
 
   export interface Address {
@@ -100,13 +95,6 @@ export namespace IEsploraApi {
     electrum?: boolean;
   }
 
-  export interface ScriptHash {
-    scripthash: string;
-    chain_stats: ChainStats;
-    mempool_stats: MempoolStats;
-    electrum?: boolean;
-  }
-
   export interface ChainStats {
     funded_txo_count: number;
     funded_txo_sum: number;

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

@@ -1,277 +1,48 @@
 import config from '../../config';
-import axios, { AxiosResponse } from 'axios';
-import http from 'http';
+import axios, { AxiosRequestConfig } from 'axios';
 import { AbstractBitcoinApi } from './bitcoin-api-abstract-factory';
 import { IEsploraApi } from './esplora-api.interface';
-import logger from '../../logger';
-
-interface FailoverHost {
-  host: string,
-  rtts: number[],
-  rtt: number,
-  failures: number,
-  latestHeight?: number,
-  socket?: boolean,
-  outOfSync?: boolean,
-  unreachable?: boolean,
-  preferred?: boolean,
-}
-
-class FailoverRouter {
-  activeHost: FailoverHost;
-  fallbackHost: FailoverHost;
-  hosts: FailoverHost[];
-  multihost: boolean;
-  pollInterval: number = 60000;
-  pollTimer: NodeJS.Timeout | null = null;
-  pollConnection = axios.create();
-  requestConnection = axios.create({
-    httpAgent: new http.Agent({ keepAlive: true })
-  });
-
-  constructor() {
-    // setup list of hosts
-    this.hosts = (config.ESPLORA.FALLBACK || []).map(domain => {
-      return {
-        host: domain,
-        rtts: [],
-        rtt: Infinity,
-        failures: 0,
-      };
-    });
-    this.activeHost = {
-      host: config.ESPLORA.UNIX_SOCKET_PATH || config.ESPLORA.REST_API_URL,
-      rtts: [],
-      rtt: 0,
-      failures: 0,
-      socket: !!config.ESPLORA.UNIX_SOCKET_PATH,
-      preferred: true,
-    };
-    this.fallbackHost = this.activeHost;
-    this.hosts.unshift(this.activeHost);
-    this.multihost = this.hosts.length > 1;
-  }
-
-  public startHealthChecks(): void {
-    // use axios interceptors to measure request rtt
-    this.pollConnection.interceptors.request.use((config) => {
-      config['meta'] = { startTime: Date.now() };
-      return config;
-    });
-    this.pollConnection.interceptors.response.use((response) => {
-      response.config['meta'].rtt = Date.now() - response.config['meta'].startTime;
-      return response;
-    });
-
-    if (this.multihost) {
-      this.pollHosts();
-    }
-  }
-
-  // start polling hosts to measure availability & rtt
-  private async pollHosts(): Promise<void> {
-    if (this.pollTimer) {
-      clearTimeout(this.pollTimer);
-    }
-
-    const results = await Promise.allSettled(this.hosts.map(async (host) => {
-      if (host.socket) {
-        return this.pollConnection.get<number>('/blocks/tip/height', { socketPath: host.host, timeout: config.ESPLORA.FALLBACK_TIMEOUT });
-      } else {
-        return this.pollConnection.get<number>(host.host + '/blocks/tip/height', { timeout: config.ESPLORA.FALLBACK_TIMEOUT });
-      }
-    }));
-    const maxHeight = results.reduce((max, result) => Math.max(max, result.status === 'fulfilled' ? result.value?.data || 0 : 0), 0);
-
-    // update rtts & sync status
-    for (let i = 0; i < results.length; i++) {
-      const host = this.hosts[i];
-      const result = results[i].status === 'fulfilled' ? (results[i] as PromiseFulfilledResult<AxiosResponse<number, any>>).value : null;
-      if (result) {
-        const height = result.data;
-        const rtt = result.config['meta'].rtt;
-        host.rtts.unshift(rtt);
-        host.rtts.slice(0, 5);
-        host.rtt = host.rtts.reduce((acc, l) => acc + l, 0) / host.rtts.length;
-        host.latestHeight = height;
-        if (height == null || isNaN(height) || (maxHeight - height > 2)) {
-          host.outOfSync = true;
-        } else {
-          host.outOfSync = false;
-        }
-        host.unreachable = false;
-      } else {
-        host.outOfSync = true;
-        host.unreachable = true;
-      }
-    }
-
-    this.sortHosts();
-
-    logger.debug(`Tomahawk ranking:\n${this.hosts.map((host, index) => this.formatRanking(index, host, this.activeHost, maxHeight)).join('\n')}`);
-
-    // switch if the current host is out of sync or significantly slower than the next best alternative
-    if (this.activeHost.outOfSync || this.activeHost.unreachable || (this.activeHost !== this.hosts[0] && this.hosts[0].preferred) || (!this.activeHost.preferred && this.activeHost.rtt > (this.hosts[0].rtt * 2) + 50)) {
-      if (this.activeHost.unreachable) {
-        logger.warn(`🚨🚨🚨 Unable to reach ${this.activeHost.host}, failing over to next best alternative 🚨🚨🚨`);
-      } else if (this.activeHost.outOfSync) {
-        logger.warn(`🚨🚨🚨 ${this.activeHost.host} has fallen behind, failing over to next best alternative 🚨🚨🚨`);
-      } else {
-        logger.debug(`🛠️ ${this.activeHost.host} is no longer the best esplora host 🛠️`);
-      }
-      this.electHost();
-    }
-
-    this.pollTimer = setTimeout(() => { this.pollHosts(); }, this.pollInterval);
-  }
-
-  private formatRanking(index: number, host: FailoverHost, active: FailoverHost, maxHeight: number): string {
-    const heightStatus = host.outOfSync ? '🚫' : (host.latestHeight && host.latestHeight < maxHeight ? '🟧' : '✅');
-    return `${host === active ? '⭐️' : '  '} ${host.rtt < Infinity ? Math.round(host.rtt).toString().padStart(5, ' ') + 'ms' : '    -  '} ${host.unreachable ? '🔥' : '✅'} | block: ${host.latestHeight || '??????'} ${heightStatus} | ${host.host} ${host === active ? '⭐️' : '  '}`;
-  }
-
-  // sort hosts by connection quality, and update default fallback
-  private sortHosts(): void {
-    // sort by connection quality
-    this.hosts.sort((a, b) => {
-      if ((a.unreachable || a.outOfSync) === (b.unreachable || b.outOfSync)) {
-        if  (a.preferred === b.preferred) {
-          // lower rtt is best
-          return a.rtt - b.rtt;
-        } else { // unless we have a preferred host
-          return a.preferred ? -1 : 1;
-        }
-      } else { // or the host is out of sync
-        return (a.unreachable || a.outOfSync) ? 1 : -1;
-      }
-    });
-    if (this.hosts.length > 1 && this.hosts[0] === this.activeHost) {
-      this.fallbackHost = this.hosts[1];
-    } else {
-      this.fallbackHost = this.hosts[0];
-    }
-  }
-
-  // depose the active host and choose the next best replacement
-  private electHost(): void {
-    this.activeHost.outOfSync = true;
-    this.activeHost.failures = 0;
-    this.sortHosts();
-    this.activeHost = this.hosts[0];
-    logger.warn(`Switching esplora host to ${this.activeHost.host}`);
-  }
-
-  private addFailure(host: FailoverHost): FailoverHost {
-    host.failures++;
-    if (host.failures > 5 && this.multihost) {
-      logger.warn(`🚨🚨🚨 Too many esplora failures on ${this.activeHost.host}, falling back to next best alternative 🚨🚨🚨`);
-      this.electHost();
-      return this.activeHost;
-    } else {
-      return this.fallbackHost;
-    }
-  }
-
-  private async $query<T>(method: 'get'| 'post', path, data: any, responseType = 'json', host = this.activeHost, retry: boolean = true): Promise<T> {
-    let axiosConfig;
-    let url;
-    if (host.socket) {
-      axiosConfig = { socketPath: host.host, timeout: config.ESPLORA.REQUEST_TIMEOUT, responseType };
-      url = path;
-    } else {
-      axiosConfig = { timeout: config.ESPLORA.REQUEST_TIMEOUT, responseType };
-      url = host.host + path;
-    }
-    if (data?.params) {
-      axiosConfig.params = data.params;
-    }
-    return (method === 'post'
-        ? this.requestConnection.post<T>(url, data, axiosConfig)
-        : this.requestConnection.get<T>(url, axiosConfig)
-    ).then((response) => { host.failures = Math.max(0, host.failures - 1); return response.data; })
-      .catch((e) => {
-        let fallbackHost = this.fallbackHost;
-        if (e?.response?.status !== 404) {
-          logger.warn(`esplora request failed ${e?.response?.status} ${host.host}${path}`);
-          logger.warn(e instanceof Error ? e.message : e);
-          fallbackHost = this.addFailure(host);
-        }
-        if (retry && e?.code === 'ECONNREFUSED' && this.multihost) {
-          // Retry immediately
-          return this.$query(method, path, data, responseType, fallbackHost, false);
-        } else {
-          throw e;
-        }
-      });
-  }
-
-  public async $get<T>(path, responseType = 'json', params: any = null): Promise<T> {
-    return this.$query<T>('get', path, params ? { params } : null, responseType);
-  }
-
-  public async $post<T>(path, data: any, responseType = 'json'): Promise<T> {
-    return this.$query<T>('post', path, data, responseType);
-  }
-}
 
 class ElectrsApi implements AbstractBitcoinApi {
-  private failoverRouter = new FailoverRouter();
+  axiosConfig: AxiosRequestConfig = {
+    timeout: 10000,
+  };
+
+  constructor() { }
 
   $getRawMempool(): Promise<IEsploraApi.Transaction['txid'][]> {
-    return this.failoverRouter.$get<IEsploraApi.Transaction['txid'][]>('/mempool/txids');
+    return axios.get<IEsploraApi.Transaction['txid'][]>(config.ESPLORA.REST_API_URL + '/mempool/txids', this.axiosConfig)
+      .then((response) => response.data);
   }
 
   $getRawTransaction(txId: string): Promise<IEsploraApi.Transaction> {
-    return this.failoverRouter.$get<IEsploraApi.Transaction>('/tx/' + txId);
-  }
-
-  async $getRawTransactions(txids: string[]): Promise<IEsploraApi.Transaction[]> {
-    return this.failoverRouter.$post<IEsploraApi.Transaction[]>('/internal/txs', txids, 'json');
-  }
-
-  async $getMempoolTransactions(txids: string[]): Promise<IEsploraApi.Transaction[]> {
-    return this.failoverRouter.$post<IEsploraApi.Transaction[]>('/internal/mempool/txs', txids, 'json');
-  }
-
-  async $getAllMempoolTransactions(lastSeenTxid?: string, max_txs?: number): Promise<IEsploraApi.Transaction[]> {
-    return this.failoverRouter.$get<IEsploraApi.Transaction[]>('/internal/mempool/txs' + (lastSeenTxid ? '/' + lastSeenTxid : ''), 'json', max_txs ? { max_txs } : null);
-  }
-
-  $getTransactionHex(txId: string): Promise<string> {
-    return this.failoverRouter.$get<string>('/tx/' + txId + '/hex');
+    return axios.get<IEsploraApi.Transaction>(config.ESPLORA.REST_API_URL + '/tx/' + txId, this.axiosConfig)
+      .then((response) => response.data);
   }
 
   $getBlockHeightTip(): Promise<number> {
-    return this.failoverRouter.$get<number>('/blocks/tip/height');
-  }
-
-  $getBlockHashTip(): Promise<string> {
-    return this.failoverRouter.$get<string>('/blocks/tip/hash');
+    return axios.get<number>(config.ESPLORA.REST_API_URL + '/blocks/tip/height', this.axiosConfig)
+      .then((response) => response.data);
   }
 
   $getTxIdsForBlock(hash: string): Promise<string[]> {
-    return this.failoverRouter.$get<string[]>('/block/' + hash + '/txids');
-  }
-
-  $getTxsForBlock(hash: string): Promise<IEsploraApi.Transaction[]> {
-    return this.failoverRouter.$get<IEsploraApi.Transaction[]>('/internal/block/' + hash + '/txs');
+    return axios.get<string[]>(config.ESPLORA.REST_API_URL + '/block/' + hash + '/txids', this.axiosConfig)
+      .then((response) => response.data);
   }
 
   $getBlockHash(height: number): Promise<string> {
-    return this.failoverRouter.$get<string>('/block-height/' + height);
+    return axios.get<string>(config.ESPLORA.REST_API_URL + '/block-height/' + height, this.axiosConfig)
+      .then((response) => response.data);
   }
 
   $getBlockHeader(hash: string): Promise<string> {
-    return this.failoverRouter.$get<string>('/block/' + hash + '/header');
+    return axios.get<string>(config.ESPLORA.REST_API_URL + '/block/' + hash + '/header', this.axiosConfig)
+      .then((response) => response.data);
   }
 
   $getBlock(hash: string): Promise<IEsploraApi.Block> {
-    return this.failoverRouter.$get<IEsploraApi.Block>('/block/' + hash);
-  }
-
-  $getRawBlock(hash: string): Promise<Buffer> {
-    return this.failoverRouter.$get<any>('/block/' + hash + '/raw', 'arraybuffer')
-      .then((response) => { return Buffer.from(response.data); });
+    return axios.get<IEsploraApi.Block>(config.ESPLORA.REST_API_URL + '/block/' + hash, this.axiosConfig)
+      .then((response) => response.data);
   }
 
   $getAddress(address: string): Promise<IEsploraApi.Address> {
@@ -282,14 +53,6 @@ class ElectrsApi implements AbstractBitcoinApi {
     throw new Error('Method getAddressTransactions not implemented.');
   }
 
-  $getScriptHash(scripthash: string): Promise<IEsploraApi.ScriptHash> {
-    throw new Error('Method getScriptHash not implemented.');
-  }
-
-  $getScriptHashTransactions(scripthash: string, txId?: string): Promise<IEsploraApi.Transaction[]> {
-    throw new Error('Method getScriptHashTransactions not implemented.');
-  }
-
   $getAddressPrefix(prefix: string): string[] {
     throw new Error('Method not implemented.');
   }
@@ -298,29 +61,9 @@ class ElectrsApi implements AbstractBitcoinApi {
     throw new Error('Method not implemented.');
   }
 
-  $getOutspend(txId: string, vout: number): Promise<IEsploraApi.Outspend> {
-    return this.failoverRouter.$get<IEsploraApi.Outspend>('/tx/' + txId + '/outspend/' + vout);
-  }
-
-  $getOutspends(txId: string): Promise<IEsploraApi.Outspend[]> {
-    return this.failoverRouter.$get<IEsploraApi.Outspend[]>('/tx/' + txId + '/outspends');
-  }
-
-  async $getBatchedOutspends(txids: string[]): Promise<IEsploraApi.Outspend[][]> {
+  $getOutspends(): Promise<IEsploraApi.Outspend[]> {
     throw new Error('Method not implemented.');
   }
-
-  async $getBatchedOutspendsInternal(txids: string[]): Promise<IEsploraApi.Outspend[][]> {
-    return this.failoverRouter.$post<IEsploraApi.Outspend[][]>('/internal/txs/outspends/by-txid', txids, 'json');
-  }
-
-  async $getOutSpendsByOutpoint(outpoints: { txid: string, vout: number }[]): Promise<IEsploraApi.Outspend[]> {
-    return this.failoverRouter.$post<IEsploraApi.Outspend[]>('/internal/txs/outspends/by-outpoint', outpoints.map(out => `${out.txid}:${out.vout}`), 'json');
-  }
-
-  public startHealthChecks(): void {
-    this.failoverRouter.startHealthChecks();
-  }
 }
 
 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

@@ -1,11 +1,5 @@
-import * as bitcoinjs from 'bitcoinjs-lib';
-import { Request } from 'express';
-import { CpfpInfo, CpfpSummary, CpfpCluster, EffectiveFeeStats, MempoolBlockWithTransactions, TransactionExtended, MempoolTransactionExtended, TransactionStripped, WorkingEffectiveFeeStats, TransactionClassified, TransactionFlags } from '../mempool.interfaces';
+import { CpfpInfo, TransactionExtended, TransactionStripped } from '../mempool.interfaces';
 import config from '../config';
-import { NodeSocket } from '../repositories/NodesSocketsRepository';
-import { isIP } from 'net';
-import transactionUtils from './transaction-utils';
-import { isPoint } from '../utils/secp256k1';
 export class Common {
   static nativeAssetId = config.MEMPOOL.NETWORK === 'liquidtestnet' ?
     '144c654344aa716d6f3abcc1ca90e5641e4e2a7f633bc09fe3baf64585819a49'
@@ -39,343 +33,51 @@ export class Common {
   }
 
   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 arr = [transactions[transactions.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);
+      arr.push(transactions[Math.floor(transactions.length * chunk * itemsToAdd)].effectiveFeePerVsize);
       itemsToAdd--;
     }
 
-    arr.push(filtered[0].effectiveFeePerVsize);
+    arr.push(transactions[0].effectiveFeePerVsize);
     return arr;
   }
 
-  static findRbfTransactions(added: MempoolTransactionExtended[], deleted: MempoolTransactionExtended[], forceScalable = false): { [txid: string]: MempoolTransactionExtended[] } {
-    const matches: { [txid: string]: MempoolTransactionExtended[] } = {};
-
-    // For small N, a naive nested loop is extremely fast, but it doesn't scale
-    if (added.length < 1000 && deleted.length < 50 && !forceScalable) {
-      added.forEach((addedTx) => {
-        const foundMatches = deleted.filter((deletedTx) => {
+  static findRbfTransactions(added: TransactionExtended[], deleted: TransactionExtended[]): { [txid: string]: TransactionExtended } {
+    const matches: { [txid: string]: TransactionExtended } = {};
+    deleted
+      // The replaced tx must have at least one input with nSequence < maxint-1 (That’s the opt-in)
+      .filter((tx) => tx.vin.some((vin) => vin.sequence < 0xfffffffe))
+      .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.adjustedFeePerVsize > deletedTx.adjustedFeePerVsize
+            && 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));
+              addedTx.vin.some((vin) => vin.txid === deletedVin.txid));
             });
-        if (foundMatches?.length) {
-          matches[addedTx.txid] = [...new Set(foundMatches)];
+        if (foundMatches) {
+          matches[deletedTx.txid] = foundMatches;
         }
       });
-    } else {
-      // for large N, build a lookup table of prevouts we can check in ~constant time
-      const deletedSpendMap: { [txid: string]: { [vout: number]: MempoolTransactionExtended } } = {};
-      for (const tx of deleted) {
-        for (const vin of tx.vin) {
-          if (!deletedSpendMap[vin.txid]) {
-            deletedSpendMap[vin.txid] = {};
-          }
-          deletedSpendMap[vin.txid][vin.vout] = tx;
-        }
-      }
-
-      for (const addedTx of added) {
-        const foundMatches = new Set<MempoolTransactionExtended>();
-        for (const vin of addedTx.vin) {
-          const deletedTx = deletedSpendMap[vin.txid]?.[vin.vout];
-          if (deletedTx && deletedTx.txid !== addedTx.txid
-              // The new tx must, absolutely speaking, pay at least as much fee as the replaced tx.
-              && addedTx.fee > deletedTx.fee
-              // The new transaction must pay more fee per kB than the replaced tx.
-              && addedTx.adjustedFeePerVsize > deletedTx.adjustedFeePerVsize
-          ) {
-            foundMatches.add(deletedTx);
-          }
-          if (foundMatches.size) {
-            matches[addedTx.txid] = [...foundMatches];
-          }
-        }
-      }
-    }
-
     return matches;
   }
 
-  static findMinedRbfTransactions(minedTransactions: TransactionExtended[], spendMap: Map<string, MempoolTransactionExtended>): { [txid: string]: { replaced: MempoolTransactionExtended[], replacedBy: TransactionExtended }} {
-    const matches: { [txid: string]: { replaced: MempoolTransactionExtended[], replacedBy: TransactionExtended }} = {};
-    for (const tx of minedTransactions) {
-      const replaced: Set<MempoolTransactionExtended> = new Set();
-      for (let i = 0; i < tx.vin.length; i++) {
-        const vin = tx.vin[i];
-        const match = spendMap.get(`${vin.txid}:${vin.vout}`);
-        if (match && match.txid !== tx.txid) {
-          replaced.add(match);
-          // remove this tx from the spendMap
-          // prevents the same tx being replaced more than once
-          for (const replacedVin of match.vin) {
-            const key = `${replacedVin.txid}:${replacedVin.vout}`;
-            spendMap.delete(key);
-          }
-        }
-        const key = `${vin.txid}:${vin.vout}`;
-        spendMap.delete(key);
-      }
-      if (replaced.size) {
-        matches[tx.txid] = { replaced: Array.from(replaced), replacedBy: tx };
-      }
-    }
-    return matches;
-  }
-
-  static setSchnorrSighashFlags(flags: bigint, witness: string[]): bigint {
-    // no witness items
-    if (!witness?.length) {
-      return flags;
-    }
-    const hasAnnex = witness.length > 1 && witness[witness.length - 1].startsWith('50');
-    if (witness?.length === (hasAnnex ? 2 : 1)) {
-      // keypath spend, signature is the only witness item
-      if (witness[0].length === 130) {
-        flags |= this.setSighashFlags(flags, witness[0]);
-      } else {
-        flags |= TransactionFlags.sighash_default;
-      }
-    } else {
-      // scriptpath spend, all items except for the script, control block and annex could be signatures
-      for (let i = 0; i < witness.length - (hasAnnex ? 3 : 2); i++) {
-        // handle probable signatures
-        if (witness[i].length === 130) {
-          flags |= this.setSighashFlags(flags, witness[i]);
-        } else if (witness[i].length === 128) {
-          flags |= TransactionFlags.sighash_default;
-        }
-      }
-    }
-    return flags;
-  }
-
-  static isDERSig(w: string): boolean {
-    // heuristic to detect probable DER signatures
-    return (w.length >= 18
-      && w.startsWith('30') // minimum DER signature length is 8 bytes + sighash flag (see https://mempool.space/testnet/tx/c6c232a36395fa338da458b86ff1327395a9afc28c5d2daa4273e410089fd433)
-      && ['01', '02', '03', '81', '82', '83'].includes(w.slice(-2)) // signature must end with a valid sighash flag
-      && (w.length === (2 * parseInt(w.slice(2, 4), 16)) + 6) // second byte encodes the combined length of the R and S components
-    );
-  }
-
-  static setSegwitSighashFlags(flags: bigint, witness: string[]): bigint {
-    for (const w of witness) {
-      if (this.isDERSig(w)) {
-        flags |= this.setSighashFlags(flags, w);
-      }
-    }
-    return flags;
-  }
-
-  static setLegacySighashFlags(flags: bigint, scriptsig_asm: string): bigint {
-    for (const item of scriptsig_asm.split(' ')) {
-      // skip op_codes
-      if (item.startsWith('OP_')) {
-        continue;
-      }
-      // check pushed data
-      if (this.isDERSig(item)) {
-        flags |= this.setSighashFlags(flags, item);
-      }
-    }
-    return flags;
-  }
-
-  static setSighashFlags(flags: bigint, signature: string): bigint {
-    switch(signature.slice(-2)) {
-      case '01': return flags | TransactionFlags.sighash_all;
-      case '02': return flags | TransactionFlags.sighash_none;
-      case '03': return flags | TransactionFlags.sighash_single;
-      case '81': return flags | TransactionFlags.sighash_all | TransactionFlags.sighash_acp;
-      case '82': return flags | TransactionFlags.sighash_none | TransactionFlags.sighash_acp;
-      case '83': return flags | TransactionFlags.sighash_single | TransactionFlags.sighash_acp;
-      default: return flags | TransactionFlags.sighash_default; // taproot only
-    }
-  }
-
-  static isBurnKey(pubkey: string): boolean {
-    return [
-      '022222222222222222222222222222222222222222222222222222222222222222',
-      '033333333333333333333333333333333333333333333333333333333333333333',
-      '020202020202020202020202020202020202020202020202020202020202020202',
-      '030303030303030303030303030303030303030303030303030303030303030303',
-    ].includes(pubkey);
-  }
-
-  static getTransactionFlags(tx: TransactionExtended): number {
-    let flags = tx.flags ? BigInt(tx.flags) : 0n;
-
-    // Update variable flags (CPFP, RBF)
-    if (tx.ancestors?.length) {
-      flags |= TransactionFlags.cpfp_child;
-    }
-    if (tx.descendants?.length) {
-      flags |= TransactionFlags.cpfp_parent;
-    }
-    if (tx.replacement) {
-      flags |= TransactionFlags.replacement;
-    }
-
-    // Already processed static flags, no need to do it again
-    if (tx.flags) {
-      return Number(flags);
-    }
-
-    // Process static flags
-    if (tx.version === 1) {
-      flags |= TransactionFlags.v1;
-    } else if (tx.version === 2) {
-      flags |= TransactionFlags.v2;
-    }
-    const reusedAddresses: { [address: string ]: number } = {};
-    const inValues = {};
-    const outValues = {};
-    let rbf = false;
-    for (const vin of tx.vin) {
-      if (vin.sequence < 0xfffffffe) {
-        rbf = true;
-      }
-      switch (vin.prevout?.scriptpubkey_type) {
-        case 'p2pk': flags |= TransactionFlags.p2pk; break;
-        case 'multisig': flags |= TransactionFlags.p2ms; break;
-        case 'p2pkh': flags |= TransactionFlags.p2pkh; break;
-        case 'p2sh': flags |= TransactionFlags.p2sh; break;
-        case 'v0_p2wpkh': flags |= TransactionFlags.p2wpkh; break;
-        case 'v0_p2wsh': flags |= TransactionFlags.p2wsh; break;
-        case 'v1_p2tr': {
-          flags |= TransactionFlags.p2tr;
-          // in taproot, if the last witness item begins with 0x50, it's an annex
-          const hasAnnex = vin.witness?.[vin.witness.length - 1].startsWith('50');
-          // script spends have more than one witness item, not counting the annex (if present)
-          if (vin.witness.length > (hasAnnex ? 2 : 1)) {
-            // the script itself is the second-to-last witness item, not counting the annex
-            const asm = vin.inner_witnessscript_asm || transactionUtils.convertScriptSigAsm(vin.witness[vin.witness.length - (hasAnnex ? 3 : 2)]);
-            // inscriptions smuggle data within an 'OP_0 OP_IF ... OP_ENDIF' envelope
-            if (asm?.includes('OP_0 OP_IF')) {
-              flags |= TransactionFlags.inscription;
-            }
-          }
-        } break;
-      }
-
-      // sighash flags
-      if (vin.prevout?.scriptpubkey_type === 'v1_p2tr') {
-        flags |= this.setSchnorrSighashFlags(flags, vin.witness);
-      } else if (vin.witness) {
-        flags |= this.setSegwitSighashFlags(flags, vin.witness);
-      } else if (vin.scriptsig?.length) {
-        flags |= this.setLegacySighashFlags(flags, vin.scriptsig_asm || transactionUtils.convertScriptSigAsm(vin.scriptsig));
-      }
-
-      if (vin.prevout?.scriptpubkey_address) {
-        reusedAddresses[vin.prevout?.scriptpubkey_address] = (reusedAddresses[vin.prevout?.scriptpubkey_address] || 0) + 1;
-      }
-      inValues[vin.prevout?.value || Math.random()] = (inValues[vin.prevout?.value || Math.random()] || 0) + 1;
-    }
-    if (rbf) {
-      flags |= TransactionFlags.rbf;
-    } else {
-      flags |= TransactionFlags.no_rbf;
-    }
-    let hasFakePubkey = false;
-    for (const vout of tx.vout) {
-      switch (vout.scriptpubkey_type) {
-        case 'p2pk': {
-          flags |= TransactionFlags.p2pk;
-          // detect fake pubkey (i.e. not a valid DER point on the secp256k1 curve)
-          hasFakePubkey = hasFakePubkey || !isPoint(vout.scriptpubkey.slice(2, -2));
-        } break;
-        case 'multisig': {
-          flags |= TransactionFlags.p2ms;
-          // detect fake pubkeys (i.e. not valid DER points on the secp256k1 curve)
-          const asm = vout.scriptpubkey_asm || transactionUtils.convertScriptSigAsm(vout.scriptpubkey);
-          for (const key of (asm?.split(' ') || [])) {
-            if (!hasFakePubkey && !key.startsWith('OP_')) {
-              hasFakePubkey = hasFakePubkey || this.isBurnKey(key) || !isPoint(key);
-            }
-          }
-        } break;
-        case 'p2pkh': flags |= TransactionFlags.p2pkh; break;
-        case 'p2sh': flags |= TransactionFlags.p2sh; break;
-        case 'v0_p2wpkh': flags |= TransactionFlags.p2wpkh; break;
-        case 'v0_p2wsh': flags |= TransactionFlags.p2wsh; break;
-        case 'v1_p2tr': flags |= TransactionFlags.p2tr; break;
-        case 'op_return': flags |= TransactionFlags.op_return; break;
-      }
-      if (vout.scriptpubkey_address) {
-        reusedAddresses[vout.scriptpubkey_address] = (reusedAddresses[vout.scriptpubkey_address] || 0) + 1;
-      }
-      outValues[vout.value || Math.random()] = (outValues[vout.value || Math.random()] || 0) + 1;
-    }
-    if (hasFakePubkey) {
-      flags |= TransactionFlags.fake_pubkey;
-    }
-    
-    // fast but bad heuristic to detect possible coinjoins
-    // (at least 5 inputs and 5 outputs, less than half of which are unique amounts, with no address reuse)
-    const addressReuse = Object.values(reusedAddresses).reduce((acc, count) => Math.max(acc, count), 0) > 1;
-    if (!addressReuse && tx.vin.length >= 5 && tx.vout.length >= 5 && (Object.keys(inValues).length + Object.keys(outValues).length) <= (tx.vin.length + tx.vout.length) / 2 ) {
-      flags |= TransactionFlags.coinjoin;
-    }
-    // more than 5:1 input:output ratio
-    if (tx.vin.length / tx.vout.length >= 5) {
-      flags |= TransactionFlags.consolidation;
-    }
-    // less than 1:5 input:output ratio
-    if (tx.vin.length / tx.vout.length <= 0.2) {
-      flags |= TransactionFlags.batch_payout;
-    }
-
-    return Number(flags);
-  }
-
-  static classifyTransaction(tx: TransactionExtended): TransactionClassified {
-    const flags = Common.getTransactionFlags(tx);
-    tx.flags = flags;
-    return {
-      ...Common.stripTransaction(tx),
-      flags,
-    };
-  }
-
-  static classifyTransactions(txs: TransactionExtended[]): TransactionClassified[] {
-    return txs.map(Common.classifyTransaction);
-  }
-
   static stripTransaction(tx: TransactionExtended): TransactionStripped {
     return {
       txid: tx.txid,
-      fee: tx.fee || 0,
+      fee: tx.fee,
       vsize: tx.weight / 4,
       value: tx.vout.reduce((acc, vout) => acc + (vout.value ? vout.value : 0), 0),
-      acc: tx.acceleration || undefined,
-      rate: tx.effectiveFeePerVsize,
     };
   }
 
-  static stripTransactions(txs: TransactionExtended[]): TransactionStripped[] {
-    return txs.map(Common.stripTransaction);
-  }
-
-  static sleep$(ms: number): Promise<void> {
+  static sleep(ms: number): Promise<void> {
     return new Promise((resolve) => {
        setTimeout(() => {
          resolve();
@@ -390,18 +92,18 @@ export class Common {
     }
   }
 
-  static setRelativesAndGetCpfpInfo(tx: MempoolTransactionExtended, memPool: { [txid: string]: MempoolTransactionExtended }): CpfpInfo {
+  static setRelativesAndGetCpfpInfo(tx: TransactionExtended, memPool: { [txid: string]: TransactionExtended }): CpfpInfo {
     const parents = this.findAllParents(tx, memPool);
-    const lowerFeeParents = parents.filter((parent) => parent.adjustedFeePerVsize < tx.effectiveFeePerVsize);
+    const lowerFeeParents = parents.filter((parent) => parent.feePerVsize < tx.effectiveFeePerVsize);
 
-    let totalWeight = (tx.adjustedVsize * 4) + lowerFeeParents.reduce((prev, val) => prev + (val.adjustedVsize * 4), 0);
+    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.adjustedVsize * 4),
+          weight: t.weight,
           fee: t.fee,
         };
       });
@@ -412,7 +114,7 @@ export class Common {
       totalFees += tx.bestDescendant.fee;
     }
 
-    tx.effectiveFeePerVsize = Math.max(0, totalFees / (totalWeight / 4));
+    tx.effectiveFeePerVsize = Math.max(Common.isLiquid() ? 0.1 : 1, totalFees / (totalWeight / 4));
     tx.cpfpChecked = true;
 
     return {
@@ -422,8 +124,8 @@ export class Common {
   }
 
 
-  private static findAllParents(tx: MempoolTransactionExtended, memPool: { [txid: string]: MempoolTransactionExtended }): MempoolTransactionExtended[] {
-    let parents: MempoolTransactionExtended[] = [];
+  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;
@@ -431,17 +133,17 @@ export class Common {
 
       const parentTx = memPool[parent.txid];
       if (parentTx) {
-        if (tx.bestDescendant && tx.bestDescendant.fee / (tx.bestDescendant.weight / 4) > parentTx.adjustedFeePerVsize) {
+        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.adjustedVsize * 4) + tx.bestDescendant.weight,
+              weight: tx.weight + tx.bestDescendant.weight,
               fee: tx.fee + tx.bestDescendant.fee,
               txid: tx.txid,
             };
           }
-        } else if (tx.adjustedFeePerVsize > parentTx.adjustedFeePerVsize) {
+        } else if (tx.feePerVsize > parentTx.feePerVsize) {
           parentTx.bestDescendant = {
-            weight: (tx.adjustedVsize * 4),
+            weight: tx.weight,
             fee: tx.fee,
             txid: tx.txid
           };
@@ -452,562 +154,4 @@ export class Common {
     });
     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 gogglesIndexingEnabled(): boolean {
-    return (
-      Common.blocksSummariesIndexingEnabled() &&
-      config.MEMPOOL.GOGGLES_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,
-      };
-    }
-  }
-
-  static calculateCpfp(height: number, transactions: TransactionExtended[], saveRelatives: boolean = false): CpfpSummary {
-    const clusters: CpfpCluster[] = []; // list of all cpfp clusters in this block
-    const clusterMap: { [txid: string]: CpfpCluster } = {}; // map transactions to their cpfp cluster
-    let clusterTxs: TransactionExtended[] = []; // working list of elements of the current cluster
-    let ancestors: { [txid: string]: boolean } = {}; // working set of ancestors of the current cluster root
-    const txMap: { [txid: string]: TransactionExtended } = {};
-    // initialize the txMap
-    for (const tx of transactions) {
-      txMap[tx.txid] = tx;
-    }
-    // reverse pass to identify CPFP clusters
-    for (let i = transactions.length - 1; i >= 0; i--) {
-      const tx = transactions[i];
-      if (!ancestors[tx.txid]) {
-        let totalFee = 0;
-        let totalVSize = 0;
-        clusterTxs.forEach(tx => {
-          totalFee += tx?.fee || 0;
-          totalVSize += (tx.weight / 4);
-        });
-        const effectiveFeePerVsize = totalFee / totalVSize;
-        let cluster: CpfpCluster;
-        if (clusterTxs.length > 1) {
-          cluster = {
-            root: clusterTxs[0].txid,
-            height,
-            txs: clusterTxs.map(tx => { return { txid: tx.txid, weight: tx.weight, fee: tx.fee || 0 }; }),
-            effectiveFeePerVsize,
-          };
-          clusters.push(cluster);
-        }
-        clusterTxs.forEach(tx => {
-          txMap[tx.txid].effectiveFeePerVsize = effectiveFeePerVsize;
-          if (cluster) {
-            clusterMap[tx.txid] = cluster;
-          }
-        });
-        // reset working vars
-        clusterTxs = [];
-        ancestors = {};
-      }
-      clusterTxs.push(tx);
-      tx.vin.forEach(vin => {
-        ancestors[vin.txid] = true;
-      });
-    }
-    // forward pass to enforce ancestor rate caps
-    for (const tx of transactions) {
-      let minAncestorRate = tx.effectiveFeePerVsize;
-      for (const vin of tx.vin) {
-        if (txMap[vin.txid]?.effectiveFeePerVsize) {
-          minAncestorRate = Math.min(minAncestorRate, txMap[vin.txid].effectiveFeePerVsize);
-        }
-      }
-      // check rounded values to skip cases with almost identical fees
-      const roundedMinAncestorRate = Math.ceil(minAncestorRate);
-      const roundedEffectiveFeeRate = Math.floor(tx.effectiveFeePerVsize);
-      if (roundedMinAncestorRate < roundedEffectiveFeeRate) {
-        tx.effectiveFeePerVsize = minAncestorRate;
-        if (!clusterMap[tx.txid]) {
-          // add a single-tx cluster to record the dependent rate
-          const cluster = {
-            root: tx.txid,
-            height,
-            txs: [{ txid: tx.txid, weight: tx.weight, fee: tx.fee || 0 }],
-            effectiveFeePerVsize: minAncestorRate,
-          };
-          clusterMap[tx.txid] = cluster;
-          clusters.push(cluster);
-        } else {
-          // update the existing cluster with the dependent rate
-          clusterMap[tx.txid].effectiveFeePerVsize = minAncestorRate;
-        }
-      }
-    }
-    if (saveRelatives) {
-      for (const cluster of clusters) {
-        cluster.txs.forEach((member, index) => {
-          txMap[member.txid].descendants = cluster.txs.slice(0, index).reverse();
-          txMap[member.txid].ancestors = cluster.txs.slice(index + 1).reverse();
-          txMap[member.txid].effectiveFeePerVsize = cluster.effectiveFeePerVsize;
-        });
-      }
-    }
-    return {
-      transactions,
-      clusters,
-    };
-  }
-
-  static calcEffectiveFeeStatistics(transactions: { weight: number, fee: number, effectiveFeePerVsize?: number, txid: string, acceleration?: boolean }[]): EffectiveFeeStats {
-    const sortedTxs = transactions.map(tx => { return { txid: tx.txid, weight: tx.weight, rate: tx.effectiveFeePerVsize || ((tx.fee || 0) / (tx.weight / 4)) }; }).sort((a, b) => a.rate - b.rate);
-
-    let weightCount = 0;
-    let medianFee = 0;
-    let medianWeight = 0;
-
-    // calculate the "medianFee" as the average fee rate of the middle 10000 weight units of transactions
-    const leftBound = 1995000;
-    const rightBound = 2005000;
-    for (let i = 0; i < sortedTxs.length && weightCount < rightBound; i++) {
-      const left = weightCount;
-      const right = weightCount + sortedTxs[i].weight;
-      if (right > leftBound) {
-        const weight = Math.min(right, rightBound) - Math.max(left, leftBound);
-        medianFee += (sortedTxs[i].rate * (weight / 4) );
-        medianWeight += weight;
-      }
-      weightCount += sortedTxs[i].weight;
-    }
-    const medianFeeRate = medianWeight ? (medianFee / (medianWeight / 4)) : 0;
-
-    // minimum effective fee heuristic:
-    // lowest of
-    // a) the 1st percentile of effective fee rates
-    // b) the minimum effective fee rate in the last 2% of transactions (in block order)
-    const minFee = Math.min(
-      Common.getNthPercentile(1, sortedTxs).rate,
-      transactions.slice(-transactions.length / 50).reduce((min, tx) => { return Math.min(min, tx.effectiveFeePerVsize || ((tx.fee || 0) / (tx.weight / 4))); }, Infinity)
-    );
-
-    // maximum effective fee heuristic:
-    // highest of
-    // a) the 99th percentile of effective fee rates
-    // b) the maximum effective fee rate in the first 2% of transactions (in block order)
-    const maxFee = Math.max(
-      Common.getNthPercentile(99, sortedTxs).rate,
-      transactions.slice(0, transactions.length / 50).reduce((max, tx) => { return Math.max(max, tx.effectiveFeePerVsize || ((tx.fee || 0) / (tx.weight / 4))); }, 0)
-    );
-
-    return {
-      medianFee: medianFeeRate,
-      feeRange: [
-        minFee,
-        [10,25,50,75,90].map(n => Common.getNthPercentile(n, sortedTxs).rate),
-        maxFee,
-      ].flat(),
-    };
-  }
-
-  static getNthPercentile(n: number, sortedDistribution: any[]): any {
-    return sortedDistribution[Math.floor((sortedDistribution.length - 1) * (n / 100))];
-  }
-
-  static getTransactionFromRequest(req: Request, form: boolean): string {
-    let rawTx: any = typeof req.body === 'object' && form
-      ? Object.values(req.body)[0] as any
-      : req.body;
-    if (typeof rawTx !== 'string') {
-      throw Object.assign(new Error('Non-string request body'), { code: -1 });
-    }
-
-    // Support both upper and lower case hex
-    // Support both txHash= Form and direct API POST
-    const reg = form ? /^txHash=((?:[a-fA-F0-9]{2})+)$/ : /^((?:[a-fA-F0-9]{2})+)$/;
-    const matches = reg.exec(rawTx);
-    if (!matches || !matches[1]) {
-      throw Object.assign(new Error('Non-hex request body'), { code: -2 });
-    }
-
-    // Guaranteed to be a hex string of multiple of 2
-    // Guaranteed to be lower case
-    // Guaranteed to pass validation (see function below)
-    return this.validateTransactionHex(matches[1].toLowerCase());
-  }
-
-  private static validateTransactionHex(txhex: string): string {
-    // Do not mutate txhex
-
-    // We assume txhex to be valid hex (output of getTransactionFromRequest above)
-
-    // Check 1: Valid transaction parse
-    let tx: bitcoinjs.Transaction;
-    try {
-      tx = bitcoinjs.Transaction.fromHex(txhex);
-    } catch(e) {
-      throw Object.assign(new Error('Invalid transaction (could not parse)'), { code: -4 });
-    }
-
-    // Check 2: Simple size check
-    if (tx.weight() > config.MEMPOOL.MAX_PUSH_TX_SIZE_WEIGHT) {
-      throw Object.assign(new Error(`Transaction too large (max ${config.MEMPOOL.MAX_PUSH_TX_SIZE_WEIGHT} weight units)`), { code: -3 });
-    }
-
-    // Check 3: Check unreachable script in taproot (if not allowed)
-    if (!config.MEMPOOL.ALLOW_UNREACHABLE) {
-      tx.ins.forEach(input => {
-        const witness = input.witness;
-        // See BIP 341: Script validation rules
-        const hasAnnex = witness.length >= 2 &&
-          witness[witness.length - 1][0] === 0x50;
-        const scriptSpendMinLength = hasAnnex ? 3 : 2;
-        const maybeScriptSpend = witness.length >= scriptSpendMinLength;
-
-        if (maybeScriptSpend) {
-          const controlBlock = witness[witness.length - scriptSpendMinLength + 1];
-          if (controlBlock.length === 0 || !this.isValidLeafVersion(controlBlock[0])) {
-            // Skip this input, it's not taproot
-            return;
-          }
-          // Definitely taproot. Get script
-          const script = witness[witness.length - scriptSpendMinLength];
-          const decompiled = bitcoinjs.script.decompile(script);
-          if (!decompiled || decompiled.length < 2) {
-            // Skip this input
-            return;
-          }
-          // Iterate up to second last (will look ahead 1 item)
-          for (let i = 0; i < decompiled.length - 1; i++) {
-            const first = decompiled[i];
-            const second = decompiled[i + 1];
-            if (
-              first === bitcoinjs.opcodes.OP_FALSE &&
-              second === bitcoinjs.opcodes.OP_IF
-            ) {
-              throw Object.assign(new Error('Unreachable taproot scripts not allowed'), { code: -5 });
-            }
-          }
-        }
-      })
-    }
-
-    // Pass through the input string untouched
-    return txhex;
-  }
-
-  private static isValidLeafVersion(leafVersion: number): boolean {
-    // See Note 7 in BIP341
-    // https://github.com/bitcoin/bips/blob/66a1a8151021913047934ebab3f8883f2f8ca75b/bip-0341.mediawiki#cite_note-7
-    // "What constraints are there on the leaf version?"
-
-    // Must be an integer between 0 and 255
-    // Since we're parsing a byte
-    if (Math.floor(leafVersion) !== leafVersion || leafVersion < 0 || leafVersion > 255) {
-      return false;
-    }
-    // "the leaf version cannot be odd"
-    if ((leafVersion & 0x01) === 1) {
-      return false;
-    }
-    // "The values that comply to this rule are
-    // the 32 even values between 0xc0 and 0xfe
-    if (leafVersion >= 0xc0 && leafVersion <= 0xfe) {
-      return true;
-    }
-    // and also 0x66, 0x7e, 0x80, 0x84, 0x96, 0x98, 0xba, 0xbc, 0xbe."
-    if ([0x66, 0x7e, 0x80, 0x84, 0x96, 0x98, 0xba, 0xbc, 0xbe].includes(leafVersion)) {
-      return true;
-    }
-    // Otherwise, invalid
-    return false;
-  }
-}
-
-/**
- * Class to calculate average fee rates of a list of transactions
- * at certain weight percentiles, in a single pass
- * 
- * init with:
- *   maxWeight - the total weight to measure percentiles relative to (e.g. 4MW for a single block)
- *   percentileBandWidth - how many weight units to average over for each percentile (as a % of maxWeight)
- *   percentiles - an array of weight percentiles to compute, in %
- * 
- * then call .processNext(tx) for each transaction, in descending order
- * 
- * retrieve the final results with .getFeeStats()
- */
-export class OnlineFeeStatsCalculator {
-  private maxWeight: number;
-  private percentiles = [10,25,50,75,90];
-
-  private bandWidthPercent = 2;
-  private bandWidth: number = 0;
-  private bandIndex = 0;
-  private leftBound = 0;
-  private rightBound = 0;
-  private inBand = false;
-  private totalBandFee = 0;
-  private totalBandWeight = 0;
-  private minBandRate = Infinity;
-  private maxBandRate = 0;
-
-  private feeRange: { avg: number, min: number, max: number }[] = [];
-  private totalWeight: number = 0;
-
-  constructor (maxWeight: number, percentileBandWidth?: number, percentiles?: number[]) {
-    this.maxWeight = maxWeight;
-    if (percentiles && percentiles.length) {
-      this.percentiles = percentiles;
-    }
-    if (percentileBandWidth != null) {
-      this.bandWidthPercent = percentileBandWidth;
-    }
-    this.bandWidth = this.maxWeight * (this.bandWidthPercent / 100);
-    // add min/max percentiles aligned to the ends of the range
-    this.percentiles.unshift(this.bandWidthPercent / 2);
-    this.percentiles.push(100 - (this.bandWidthPercent / 2));
-    this.setNextBounds();
-  }
-
-  processNext(tx: { weight: number, fee: number, effectiveFeePerVsize?: number, feePerVsize?: number, rate?: number, txid: string }): void {
-    let left = this.totalWeight;
-    const right = this.totalWeight + tx.weight;
-    if (!this.inBand && right <= this.leftBound) {
-      this.totalWeight += tx.weight;
-      return;
-    }
-
-    while (left < right) {
-      if (right > this.leftBound) {
-        this.inBand = true;
-        const txRate = (tx.rate || tx.effectiveFeePerVsize || tx.feePerVsize || 0);
-        const weight = Math.min(right, this.rightBound) - Math.max(left, this.leftBound);
-        this.totalBandFee += (txRate * weight);
-        this.totalBandWeight += weight;
-        this.maxBandRate = Math.max(this.maxBandRate, txRate);
-        this.minBandRate = Math.min(this.minBandRate, txRate);
-      }
-      left = Math.min(right, this.rightBound);
-
-      if (left >= this.rightBound) {
-        this.inBand = false;
-        const avgBandFeeRate = this.totalBandWeight ? (this.totalBandFee / this.totalBandWeight) : 0;
-        this.feeRange.unshift({ avg: avgBandFeeRate, min: this.minBandRate, max: this.maxBandRate });
-        this.bandIndex++;
-        this.setNextBounds();
-        this.totalBandFee = 0;
-        this.totalBandWeight = 0;
-        this.minBandRate = Infinity;
-        this.maxBandRate = 0;
-      }
-    }
-    this.totalWeight += tx.weight;
-  }
-
-  private setNextBounds(): void {
-    const nextPercentile = this.percentiles[this.bandIndex];
-    if (nextPercentile != null) {
-      this.leftBound = ((nextPercentile / 100) * this.maxWeight) - (this.bandWidth / 2);
-      this.rightBound = this.leftBound + this.bandWidth;
-    } else {
-      this.leftBound = Infinity;
-      this.rightBound = Infinity;
-    }
-  }
-
-  getRawFeeStats(): WorkingEffectiveFeeStats {
-    if (this.totalBandWeight > 0) {
-      const avgBandFeeRate = this.totalBandWeight ? (this.totalBandFee / this.totalBandWeight) : 0;
-      this.feeRange.unshift({ avg: avgBandFeeRate, min: this.minBandRate, max: this.maxBandRate });
-    }
-    while (this.feeRange.length < this.percentiles.length) {
-      this.feeRange.unshift({ avg: 0, min: 0, max: 0 });
-    }
-    return {
-      minFee: this.feeRange[0].min,
-      medianFee: this.feeRange[Math.floor(this.feeRange.length / 2)].avg,
-      maxFee: this.feeRange[this.feeRange.length - 1].max,
-      feeRange: this.feeRange.map(f => f.avg),
-    };
-  }
-
-  getFeeStats(): EffectiveFeeStats {
-    const stats = this.getRawFeeStats();
-    stats.feeRange[0] = stats.minFee;
-    stats.feeRange[stats.feeRange.length - 1] = stats.maxFee;
-    return stats;
-  }
 }

backend/src/api/difficulty-adjustment.ts

@@ -1,166 +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
-}
-
-/**
- * Calculate the difficulty increase/decrease by using the `bits` integer contained in two
- * block headers.
- *
- * Warning: Only compare `bits` from blocks in two adjacent difficulty periods. This code
- * assumes the maximum difference is x4 or /4 (as per the protocol) and will throw an
- * error if an exponent difference of 2 or more is seen.
- *
- * @param {number} oldBits The 32 bit `bits` integer from a block header.
- * @param {number} newBits The 32 bit `bits` integer from a block header in the next difficulty period.
- * @returns {number} A floating point decimal of the difficulty change from old to new.
- *          (ie. 21.3 means 21.3% increase in difficulty, -21.3 is a 21.3% decrease in difficulty)
- */
-export function calcBitsDifference(oldBits: number, newBits: number): number {
-  // Must be
-  // - integer
-  // - highest exponent is 0x20, so max value (as integer) is 0x207fffff
-  // - min value is 1 (exponent = 0)
-  // - highest bit of the number-part is +- sign, it must not be 1
-  const verifyBits = (bits: number): void => {
-    if (
-      Math.floor(bits) !== bits ||
-      bits > 0x207fffff ||
-      bits < 1 ||
-      (bits & 0x00800000) !== 0 ||
-      (bits & 0x007fffff) === 0
-    ) {
-      throw new Error('Invalid bits');
-    }
-  };
-  verifyBits(oldBits);
-  verifyBits(newBits);
-
-  // No need to mask exponents because we checked the bounds above
-  const oldExp = oldBits >> 24;
-  const newExp = newBits >> 24;
-  const oldNum = oldBits & 0x007fffff;
-  const newNum = newBits & 0x007fffff;
-  // The diff can only possibly be 1, 0, -1
-  // (because maximum difficulty change is x4 or /4 (2 bits up or down))
-  let result: number;
-  switch (newExp - oldExp) {
-    // New less than old, target lowered, difficulty increased
-    case -1:
-      result = ((oldNum << 8) * 100) / newNum - 100;
-      break;
-    // Same exponent, compare numbers as is.
-    case 0:
-      result = (oldNum * 100) / newNum - 100;
-      break;
-    // Old less than new, target raised, difficulty decreased
-    case 1:
-      result = (oldNum * 100) / (newNum << 8) - 100;
-      break;
-    default:
-      throw new Error('Impossible exponent difference');
-  }
-
-  // Min/Max values
-  return result > 300 ? 300 : result < -75 ? -75 : result;
-}
-
-export function calcDifficultyAdjustment(
-  DATime: number,
-  nowSeconds: number,
-  blockHeight: number,
-  previousRetarget: number,
-  network: string,
-  latestBlockTimestamp: number,
-): DifficultyAdjustment {
-  const EPOCH_BLOCK_LENGTH = 2016; // Bitcoin mainnet
-  const BLOCK_SECONDS_TARGET = 600; // Bitcoin mainnet
-  const TESTNET_MAX_BLOCK_SECONDS = 1200; // Bitcoin testnet
-
-  const diffSeconds = Math.max(0, 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;
-  const actualTimespan = (blocksInEpoch === 2015 ? latestBlockTimestamp : nowSeconds) - DATime;
-
-  let difficultyChange = 0;
-  let timeAvgSecs = blocksInEpoch ? diffSeconds / blocksInEpoch : BLOCK_SECONDS_TARGET;
-
-  difficultyChange = (BLOCK_SECONDS_TARGET / (actualTimespan / (blocksInEpoch + 1)) - 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

@@ -1,202 +1,74 @@
 import * as fs from 'fs';
 const fsPromises = fs.promises;
-import cluster from 'cluster';
+import * as 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';
-import rbfCache from './rbf-cache';
 
 class DiskCache {
-  private cacheSchemaVersion = 3;
-  private rbfCacheSchemaVersion = 1;
-
-  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 TMP_RBF_FILE_NAME = config.MEMPOOL.CACHE_DIR + '/tmp-rbfcache.json';
-  private static RBF_FILE_NAME = config.MEMPOOL.CACHE_DIR + '/rbfcache.json';
   private static CHUNK_FILES = 25;
   private isWritingCache = false;
-  private ignoreBlocksCache = false;
 
-  private semaphore: { resume: (() => void)[], locks: number } = {
-    resume: [],
-    locks: 0,
-  };
+  constructor() { }
 
-  constructor() {
-    if (!cluster.isPrimary || !config.MEMPOOL.CACHE_ENABLED) {
-      return;
-    }
-    process.on('SIGINT', (e) => {
-      this.$saveCacheToDisk(true);
-      process.exit(0);
-    });
-  }
-
-  async $saveCacheToDisk(sync: boolean = false): Promise<void> {
-    if (!cluster.isPrimary || !config.MEMPOOL.CACHE_ENABLED) {
+  async $saveCacheToDisk(): Promise<void> {
+    if (!cluster.isMaster) {
       return;
     }
     if (this.isWritingCache) {
-      logger.debug('Saving cache already in progress. Skipping.');
+      logger.debug('Saving cache already in progress. Skipping.')
       return;
     }
     try {
-      logger.debug(`Writing mempool and blocks data to disk cache (${ sync ? 'sync' : 'async' })...`);
+      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) {
-        if (mempool[tx]) {
-          mempoolArray.push(mempool[tx]);
-        }
+        mempoolArray.push(mempool[tx]);
       }
 
       Common.shuffleArray(mempoolArray);
 
       const chunkSize = Math.floor(mempoolArray.length / DiskCache.CHUNK_FILES);
 
-      if (sync) {
-        fs.writeFileSync(DiskCache.TMP_FILE_NAME, JSON.stringify({
-          network: config.MEMPOOL.NETWORK,
-          cacheSchemaVersion: this.cacheSchemaVersion,
-          blocks: blocks.getBlocks(),
-          blockSummaries: blocks.getBlockSummaries(),
+      await fsPromises.writeFile(DiskCache.FILE_NAME, JSON.stringify({
+        blocks: blocks.getBlocks(),
+        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' });
-        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()));
-        }
-      } else {
-        await this.$yield();
-        await fsPromises.writeFile(DiskCache.TMP_FILE_NAME, JSON.stringify({
-          network: config.MEMPOOL.NETWORK,
-          cacheSchemaVersion: this.cacheSchemaVersion,
-          blocks: blocks.getBlocks(),
-          blockSummaries: blocks.getBlockSummaries(),
-          mempool: {},
-          mempoolArray: mempoolArray.splice(0, chunkSize),
-        }), { flag: 'w' });
-        for (let i = 1; i < DiskCache.CHUNK_FILES; i++) {
-          await this.$yield();
-          await fsPromises.writeFile(DiskCache.TMP_FILE_NAMES.replace('{number}', i.toString()), JSON.stringify({
-            mempool: {},
-            mempoolArray: mempoolArray.splice(0, chunkSize),
-          }), { flag: 'w' });
-        }
-
-        await fsPromises.rename(DiskCache.TMP_FILE_NAME, DiskCache.FILE_NAME);
-        for (let i = 1; i < DiskCache.CHUNK_FILES; i++) {
-          await fsPromises.rename(DiskCache.TMP_FILE_NAMES.replace('{number}', i.toString()), DiskCache.FILE_NAMES.replace('{number}', i.toString()));
-        }
+        }), {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;
     }
-
-    try {
-      logger.debug('Writing rbf data to disk cache (async)...');
-      this.isWritingCache = true;
-      const rbfData = rbfCache.dump();
-      if (sync) {
-        fs.writeFileSync(DiskCache.TMP_RBF_FILE_NAME, JSON.stringify({
-          network: config.MEMPOOL.NETWORK,
-          rbfCacheSchemaVersion: this.rbfCacheSchemaVersion,
-          rbf: rbfData,
-        }), { flag: 'w' });
-        fs.renameSync(DiskCache.TMP_RBF_FILE_NAME, DiskCache.RBF_FILE_NAME);
-      } else {
-        await fsPromises.writeFile(DiskCache.TMP_RBF_FILE_NAME, JSON.stringify({
-          network: config.MEMPOOL.NETWORK,
-          rbfCacheSchemaVersion: this.rbfCacheSchemaVersion,
-          rbf: rbfData,
-        }), { flag: 'w' });
-        await fsPromises.rename(DiskCache.TMP_RBF_FILE_NAME, DiskCache.RBF_FILE_NAME);
-      }
-      logger.debug('Rbf data saved to disk cache');
-      this.isWritingCache = false;
-    } catch (e) {
-      logger.warn('Error writing rbf data 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)}`);
-        }
-      }
-    }
-  }
-
-  wipeRbfCache() {
-    logger.notice(`Wipping nodejs backend cache/rbfcache.json file`);
-
-    try {
-      fs.unlinkSync(DiskCache.RBF_FILE_NAME);
-    } catch (e: any) {
-      if (e?.code !== 'ENOENT') {
-        logger.err(`Cannot wipe cache file ${DiskCache.RBF_FILE_NAME}. Exception ${JSON.stringify(e)}`);
-      }
-    }
-  }
-
-  async $loadMempoolCache(): Promise<void> {
-    if (!config.MEMPOOL.CACHE_ENABLED || !fs.existsSync(DiskCache.FILE_NAME)) {
+  loadMempoolCache() {
+    if (!fs.existsSync(DiskCache.FILE_NAME)) {
       return;
     }
     try {
-      const start = Date.now();
       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) {
-            delete tx.uid;
             data.mempool[tx.txid] = tx;
           }
         }
@@ -209,7 +81,6 @@ class DiskCache {
             const cacheData2 = JSON.parse(fs.readFileSync(fileName, 'utf8'));
             if (cacheData2.mempoolArray) {
               for (const tx of cacheData2.mempoolArray) {
-                delete tx.uid;
                 data.mempool[tx.txid] = tx;
               }
             } else {
@@ -217,81 +88,15 @@ class DiskCache {
             }
           }
         } catch (e) {
-          logger.err('Error parsing ' + fileName + '. Skipping. Reason: ' + (e instanceof Error ? e.message : e));
+          logger.debug('Error parsing ' + fileName + '. Skipping.');
         }
       }
 
-      logger.info(`Loaded mempool from disk cache in ${Date.now() - start} ms`);
-
-      await memPool.$setMempool(data.mempool);
-      if (!this.ignoreBlocksCache) {
-        blocks.setBlocks(data.blocks);
-        blocks.setBlockSummaries(data.blockSummaries || []);
-      } else {
-        logger.info('Re-saving cache with empty recent blocks data');
-        await this.$saveCacheToDisk(true);
-      }
+      memPool.setMempool(data.mempool);
+      blocks.setBlocks(data.blocks);
     } catch (e) {
-      logger.warn('Failed to parse mempoool and blocks cache. Skipping. Reason: ' + (e instanceof Error ? e.message : e));
+      logger.warn('Failed to parse mempoool and blocks cache. Skipping.');
     }
-
-    try {
-      let rbfData: any = {};
-      const rbfCacheData = fs.readFileSync(DiskCache.RBF_FILE_NAME, 'utf8');
-      if (rbfCacheData) {
-        logger.info('Restoring rbf data from disk cache');
-        rbfData = JSON.parse(rbfCacheData);
-        if (rbfData.rbfCacheSchemaVersion === undefined || rbfData.rbfCacheSchemaVersion !== this.rbfCacheSchemaVersion) {
-          logger.notice('Rbf disk cache contains an outdated schema version. Clearing it and skipping the cache loading.');
-          return this.wipeRbfCache();
-        }
-        if (rbfData.network && rbfData.network !== config.MEMPOOL.NETWORK) {
-          logger.notice('Rbf disk cache contains data from a different network. Clearing it and skipping the cache loading.');
-          return this.wipeRbfCache();
-        }
-      }
-
-      if (rbfData?.rbf) {
-        rbfCache.load({
-          txs: rbfData.rbf.txs.map(([txid, entry]) => ({ value: entry })),
-          trees: rbfData.rbf.trees,
-          expiring: rbfData.rbf.expiring.map(([txid, value]) => ({ key: txid, value })),
-          mempool: memPool.getMempool(),
-        });
-      }
-    } catch (e) {
-      logger.warn('Failed to parse rbf cache. Skipping. Reason: ' + (e instanceof Error ? e.message : e));
-    }
-  }
-
-  private $yield(): Promise<void> {
-    if (this.semaphore.locks) {
-      logger.debug('Pause writing mempool and blocks data to disk cache (async)');
-      return new Promise((resolve) => {
-        this.semaphore.resume.push(resolve);
-      });
-    } else {
-      return Promise.resolve();
-    }
-  }
-
-  public lock(): void {
-    this.semaphore.locks++;
-  }
-
-  public unlock(): void {
-    this.semaphore.locks = Math.max(0, this.semaphore.locks - 1);
-    if (!this.semaphore.locks && this.semaphore.resume.length) {
-      const nextResume = this.semaphore.resume.shift();
-      if (nextResume) {
-        logger.debug('Resume writing mempool and blocks data to disk cache (async)');
-        nextResume();
-      }
-    }
-  }
-
-  public setIgnoreBlocksCache(): void {
-    this.ignoreBlocksCache = true;
   }
 }
 

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

@@ -1,735 +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 $searchChannelsById(search: string): Promise<any[]> {
-    try {
-      // restrict search to valid id/short_id prefix formats
-      let searchStripped = search.match(/^[0-9]+[0-9x]*$/)?.[0] || '';
-      if (!searchStripped.length) {
-        return [];
-      }
-      // add wildcard to search by prefix
-      searchStripped += '%';
-      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 $getPenaltyClosedChannels(): Promise<any[]> {
-    try {
-      const query = `
-        SELECT n1.alias AS alias_left,
-          n2.alias AS alias_right,
-          channels.*
-        FROM channels
-        LEFT JOIN nodes AS n1 ON n1.public_key = channels.node1_public_key
-        LEFT JOIN nodes AS n2 ON n2.public_key = channels.node2_public_key
-        WHERE channels.status = 2 AND channels.closing_reason = 3
-        ORDER BY closing_date DESC
-      `;
-      const [rows]: any = await DB.query(query);
-      return rows;
-    } catch (e) {
-      logger.err('$getPenaltyClosedChannels 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

@@ -1,139 +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/penalties', this.$getPenaltyClosedChannels)
-      .get(config.MEMPOOL.API_URL_PREFIX + 'lightning/channels-geo', this.$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 $getPenaltyClosedChannels(req: Request, res: Response): Promise<void> {
-    try {
-      const channels = await channelsApi.$getPenaltyClosedChannels();
-      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);
-    }
-  }
-
-  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

@@ -1,753 +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';
-import { bin2hex } from '../../utils/format';
-
-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,
-          features
-        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);
-
-      // Features      
-      node.features = JSON.parse(node.features);
-      node.featuresBits = null;
-      if (node.features) {
-        let maxBit = 0;
-        for (const feature of node.features) {
-          maxBit = Math.max(maxBit, feature.bit);
-        }
-        maxBit = Math.ceil(maxBit / 4) * 4 - 1;
-        
-        node.featuresBits = new Array(maxBit + 1).fill(0);
-        for (const feature of node.features) {
-          node.featuresBits[feature.bit] = 1;
-        }
-        node.featuresBits = bin2hex(node.featuresBits.reverse().join(''));
-      }
-
-      // 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 $searchNodeByPublicKeyOrAlias(search: string) {
-    try {
-      const publicKeySearch = search.replace(/[^a-zA-Z0-9]/g, '') + '%';
-      const aliasSearch = search
-        .replace(/[-_.]/g, ' ') // Replace all -_. characters with empty space. Eg: "ln.nicehash" becomes "ln nicehash".  
-        .replace(/[^a-zA-Z0-9 ]/g, '') // Remove all special characters and keep just A to Z, 0 to 9.
-        .split(' ')
-        .filter(key => key.length)
-        .map((search) => '+' + search + '*').join(' ');
-      // %keyword% is wildcard search and can't be indexed so it's slower as the node database grow. keyword% can be indexed but then you can't search for "Nicehash" and get result for ln.nicehash.com. So we use fulltext index for words "ln, nicehash, com" and nicehash* will find it instantly.
-      const query = `SELECT public_key, alias, capacity, channels, status FROM nodes WHERE public_key LIKE ? OR MATCH alias_search AGAINST (? IN BOOLEAN MODE) ORDER BY capacity DESC LIMIT 10`;
-      const [rows]: any = await DB.query(query, [publicKeySearch, aliasSearch]);
-      return rows;
-    } catch (e) {
-      logger.err('$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 $saveNode(node: ILightningApi.Node): Promise<void> {
-    try {
-      // https://github.com/mempool/mempool/issues/3006
-      if ((node.last_update ?? 0) < 1514736061) { // January 1st 2018
-        node.last_update = null;
-      }
-  
-      const sockets = (node.addresses?.map(a => a.addr).join(',')) ?? '';
-      const query = `INSERT INTO nodes(
-          public_key,
-          first_seen,
-          updated_at,
-          alias,
-          alias_search,
-          color,
-          sockets,
-          status,
-          features
-        )
-        VALUES (?, NOW(), FROM_UNIXTIME(?), ?, ?, ?, ?, 1, ?)
-        ON DUPLICATE KEY UPDATE
-          updated_at = FROM_UNIXTIME(?),
-          alias = ?,
-          alias_search = ?,
-          color = ?,
-          sockets = ?,
-          status = 1,
-          features = ?
-      `;
-
-      await DB.query(query, [
-        node.pub_key,
-        node.last_update,
-        node.alias,
-        this.aliasToSearchText(node.alias),
-        node.color,
-        sockets,
-        JSON.stringify(node.features),
-        node.last_update,
-        node.alias,
-        this.aliasToSearchText(node.alias),
-        node.color,
-        sockets,
-        JSON.stringify(node.features),
-      ]);
-    } catch (e) {
-      logger.err('$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

@@ -1,334 +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 = [
-            '0259db43b4e4ac0ff12a805f2d81e521253ba2317f6739bc611d8e2fa156d64256',
-            '0352b9944b9a52bd2116c91f1ba70c4ef851ac5ba27e1b20f1d92da3ade010dd10',
-            '03424f5a7601eaa47482cb17100b31a84a04d14fb44b83a57eeceffd8e299878e3',
-            '032850492ee61a5f7006a2fda6925e4b4ec3782f2b6de2ff0e439ef5a38c3b2470',
-            '022c80bace98831c44c32fb69755f2b353434e0ee9e7fbda29507f7ef8abea1421',
-            '02c3559c833e6f99f9ca05fe503e0b4e7524dea9121344edfd3e811101e0c28680',
-            '032c7c7819276c4f706a04df1a0f1e10a5495994a7be4c1d3d28ca766e5a2b957b',
-            '025a7e38c2834dd843591a4d23d5f09cdeb77ddca85f673c2d944a14220ff14cf7',
-            '0395e2731a1673ef21d7a16a727c4fc4d4c35a861c428ce2c819c53d2b81c8bd55',
-            '032ab2028c0b614c6d87824e2373529652fd7e4221b4c70cc4da7c7005c49afcf0',
-            '029001b22fe70b48bee12d014df91982eb85ff1bd404ec772d5c83c4ee3e88d2c3',
-            '0212e2848d79f928411da5f2ff0a8c95ec6ccb5a09d2031b6f71e91309dcde63af',
-            '03e871a2229523d34f76e6311ff197cfe7f26c2fbec13554b93a46f4e710c47dab',
-            '032202ec98d976b0e928bd1d91924e8bd3eab07231fc39feb3737b010071073df8',
-            '02fa7c5a948d03d563a9f36940c2205a814e594d17c0042ced242c71a857d72605',
-            '039c14fdec2d958e3d14cebf657451bbd9e039196615785e82c917f274e3fb2205',
-            '033589bbcb233ffc416cefd5437c7f37e9d7cb7942d405e39e72c4c846d9b37f18',
-            '029293110441c6e2eacb57e1255bf6ef05c41a6a676fe474922d33c19f98a7d584',
-            '0235ad0b56ed8c42c4354444c24e971c05e769ec0b5fb0ccea42880095dc02ea2c',
-            '029700819a37afea630f80e6cc461f3fd3c4ace2598a21cfbbe64d1c78d0ee69a5',
-            '02c2d8b2dbf87c7894af2f1d321290e2fe6db5446cd35323987cee98f06e2e0075',
-            '030b0ca1ea7b1075716d2a555630e6fd47ef11bc7391fe68963ec06cf370a5e382',
-            '031adb9eb2d66693f85fa31a4adca0319ba68219f3ad5f9a2ef9b34a6b40755fa1',
-            '02ccd07faa47eda810ecf5591ccf5ca50f6c1034d0d175052898d32a00b9bae24f',
-          ];
-          break;
-        case 'signet':
-          nodesList = [
-            '029fe3621fc0c6e08056a14b868f8fb9acca1aa28a129512f6cea0f0d7654d9f92',
-            '02f60cd7a3a4f1c953dd9554a6ebd51a34f8b10b8124b7fc43a0b381139b55c883',
-            '03cbbf581774700865eebd1be42d022bc004ba30881274ab304e088a25d70e773d',
-            '0243348cb3741cfe2d8485fa8375c29c7bc7cbb67577c363cb6987a5e5fd0052cc',
-            '02cb73e631af44bee600d80f8488a9194c9dc5c7590e575c421a070d1be05bc8e9',
-            '0306f55ee631aa1e2cd4d9b2bfcbc14404faec5c541cef8b2e6f779061029d09c4',
-            '03ddab321b760433cbf561b615ef62ac7d318630c5f51d523aaf5395b90b751956',
-            '033d92c7bfd213ef1b34c90e985fb5dc77f9ec2409d391492484e57a44c4aca1de',
-            '02ad010dda54253c1eb9efe38b0760657a3b43ecad62198c359c051c9d99d45781',
-            '025196512905b8a3f1597428b867bec63ec9a95e5089eb7dc7e63e2d2691669029',
-            '027c625aa1fbe3768db68ebcb05b53b6dc0ce68b7b54b8900d326d167363e684fe',
-            '03f1629af3101fcc56b7aac2667016be84e3defbf3d0c8719f836c9b41c9a57a43',
-            '02dfb81e2f7a3c4c9e8a51b70ef82b4a24549cc2fab1f5b2fd636501774a918991',
-            '02d01ccf832944c68f10d39006093769c5b8bda886d561b128534e313d729fdb34',
-            '02499ed23027d4698a6904ff4ec1b6085a61f10b9a6937f90438f9947e38e8ea86',
-            '038310e3a786340f2bd7770704c7ccfe560fd163d9a1c99d67894597419d12cbf7',
-            '03e5e9d879b72c7d67ecd483bae023bd33e695bb32b981a4021260f7b9d62bc761',
-            '028d16e1a0ace4c0c0a421536d8d32ce484dfe6e2f726b7b0e7c30f12a195f8cc7',
-            '02ff690d06c187ab994bf83c5a2114fe5bf50112c2c817af0f788f736be9fa2070',
-            '02a9f570c51a2526a5ee85802e88f9281bed771eb66a0c8a7d898430dd5d0eae45',
-            '038c3de773255d3bd7a50e31e58d423baac5c90826a74d75e64b74c95475de1097',
-            '0242c7f7d315095f37ad1421ae0a2fc967d4cbe65b61b079c5395a769436959853',
-            '02a909e70eb03742f12666ebb1f56ac42a5fbaab0c0e8b5b1df4aa9f10f8a09240',
-            '03a26efa12489803c07f3ac2f1dba63812e38f0f6e866ce3ebb34df7de1f458cd2',
-          ];
-          break;
-        default:
-          nodesList = [
-            '02b12b889fe3c943cb05645921040ef13d6d397a2e7a4ad000e28500c505ff26d6',
-            '0302240ac9d71b39617cbde2764837ec3d6198bd6074b15b75d2ff33108e89d2e1',
-            '03364a8ace313376e5e4b68c954e287c6388e16df9e9fdbaf0363ecac41105cbf6',
-            '03229ab4b7f692753e094b93df90530150680f86b535b5183b0cffd75b3df583fc',
-            '03a696eb7acde991c1be97a58a9daef416659539ae462b897f5e9ae361f990228e',
-            '0248bf26cf3a63ab8870f34dc0ec9e6c8c6288cdba96ba3f026f34ec0f13ac4055',
-            '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

@@ -1,36 +1,24 @@
-import { MempoolBlock } from '../mempool.interfaces';
 import config from '../config';
+import { MempoolBlock } from '../mempool.interfaces';
+import { Common } from './common';
 import mempool from './mempool';
 import projectedBlocks from './mempool-blocks';
 
-const isLiquid = config.MEMPOOL.NETWORK === 'liquid' || config.MEMPOOL.NETWORK === 'liquidtestnet';
-
-interface RecommendedFees {
-  fastestFee: number,
-  halfHourFee: number,
-  hourFee: number,
-  economyFee: number,
-  minimumFee: number,
-}
-
 class FeeApi {
   constructor() { }
 
-  defaultFee = isLiquid ? 0.1 : 1;
-  minimumIncrement = isLiquid ? 0.1 : 1;
+  defaultFee = Common.isLiquid() ? 0.1 : 1;
 
-  public getRecommendedFee(): RecommendedFees {
+  public getRecommendedFee() {
     const pBlocks = projectedBlocks.getMempoolBlocks();
     const mPool = mempool.getMempoolInfo();
-    const minimumFee = this.roundUpToNearest(mPool.mempoolminfee * 100000, this.minimumIncrement);
-    const defaultMinFee = Math.max(minimumFee, this.defaultFee);
+    const minimumFee = Math.ceil(mPool.mempoolminfee * 100000);
 
     if (!pBlocks.length) {
       return {
-        'fastestFee': defaultMinFee,
-        'halfHourFee': defaultMinFee,
-        'hourFee': defaultMinFee,
-        'economyFee': minimumFee,
+        'fastestFee': this.defaultFee,
+        'halfHourFee': this.defaultFee,
+        'hourFee': this.defaultFee,
         'minimumFee': minimumFee,
       };
     }
@@ -39,25 +27,10 @@ class FeeApi {
     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;
 
-    let fastestFee = Math.max(minimumFee, firstMedianFee);
-    let halfHourFee = Math.max(minimumFee, secondMedianFee);
-    let hourFee = Math.max(minimumFee, thirdMedianFee);
-    const economyFee = Math.max(minimumFee, Math.min(2 * minimumFee, thirdMedianFee));
-
-    // ensure recommendations always increase w/ priority
-    fastestFee = Math.max(fastestFee, halfHourFee, hourFee, economyFee);
-    halfHourFee = Math.max(halfHourFee, hourFee, economyFee);
-    hourFee = Math.max(hourFee, economyFee);
-
-    // explicitly enforce a minimum of ceil(mempoolminfee) on all recommendations.
-    // simply rounding up recommended rates is insufficient, as the purging rate
-    // can exceed the median rate of projected blocks in some extreme scenarios
-    // (see https://bitcoin.stackexchange.com/a/120024)
     return {
-      'fastestFee': fastestFee,
-      'halfHourFee': halfHourFee,
-      'hourFee': hourFee,
-      'economyFee': economyFee,
+      'fastestFee': firstMedianFee,
+      'halfHourFee': secondMedianFee,
+      'hourFee': thirdMedianFee,
       'minimumFee': minimumFee,
     };
   }
@@ -71,11 +44,7 @@ class FeeApi {
       const multiplier = (pBlock.blockVSize - 500000) / 500000;
       return Math.max(Math.round(useFee * multiplier), this.defaultFee);
     }
-    return this.roundUpToNearest(useFee, this.minimumIncrement);
-  }
-
-  private roundUpToNearest(value: number, nearest: number): number {
-    return Math.ceil(value / nearest) * nearest;
+    return Math.ceil(useFee);
   }
 }
 

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 +1,44 @@
+import logger from '../logger';
+import axios from 'axios';
+import { IConversionRates } from '../mempool.interfaces';
+import config from '../config';
+
+class FiatConversion {
+  private conversionRates: IConversionRates = {
+    'USD': 0
+  };
+  private ratesChangedCallback: ((rates: IConversionRates) => void) | undefined;
+
+  constructor() { }
+
+  public setProgressChangedCallback(fn: (rates: IConversionRates) => void) {
+    this.ratesChangedCallback = fn;
+  }
+
+  public startService() {
+    logger.info('Starting currency rates service');
+    setInterval(this.updateCurrency.bind(this), 1000 * config.MEMPOOL.PRICE_FEED_UPDATE_INTERVAL);
+    this.updateCurrency();
+  }
+
+  public getConversionRates() {
+    return this.conversionRates;
+  }
+
+  private async updateCurrency(): Promise<void> {
+    try {
+      const response = await axios.get('https://price.bisq.wiz.biz/getAllMarketPrices', { timeout: 10000 });
+      const usd = response.data.data.find((item: any) => item.currencyCode === 'USD');
+      this.conversionRates = {
+        'USD': usd.price,
+      };
+      if (this.ratesChangedCallback) {
+        this.ratesChangedCallback(this.conversionRates);
+      }
+    } catch (e) {
+      logger.err('Error updating fiat conversion rates: ' + (e instanceof Error ? e.message : e));
+    }
+  }
+}
+
+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

@@ -1,275 +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 { hex2bin } from '../../../utils/format';
-import config from '../../../config';
-
-// https://github.com/lightningnetwork/lnd/blob/master/lnwire/features.go
-export enum FeatureBits {
-	DataLossProtectRequired = 0,
-	DataLossProtectOptional = 1,
-	InitialRoutingSync = 3,
-	UpfrontShutdownScriptRequired = 4,
-	UpfrontShutdownScriptOptional = 5,
-	GossipQueriesRequired = 6,
-	GossipQueriesOptional = 7,
-	TLVOnionPayloadRequired = 8,
-	TLVOnionPayloadOptional = 9,
-	StaticRemoteKeyRequired = 12,
-	StaticRemoteKeyOptional = 13,
-	PaymentAddrRequired = 14,
-	PaymentAddrOptional = 15,
-	MPPRequired = 16,
-	MPPOptional = 17,
-	WumboChannelsRequired = 18,
-	WumboChannelsOptional = 19,
-	AnchorsRequired = 20,
-	AnchorsOptional = 21,
-	AnchorsZeroFeeHtlcTxRequired = 22,
-	AnchorsZeroFeeHtlcTxOptional = 23,
-	ShutdownAnySegwitRequired = 26,
-	ShutdownAnySegwitOptional = 27,
-	AMPRequired = 30,
-	AMPOptional = 31,
-	ExplicitChannelTypeRequired = 44,
-	ExplicitChannelTypeOptional = 45,
-	ScidAliasRequired = 46,
-	ScidAliasOptional = 47,
-	PaymentMetadataRequired = 48,
-	PaymentMetadataOptional = 49,
-	ZeroConfRequired = 50,
-	ZeroConfOptional = 51,
-	KeysendRequired = 54,
-	KeysendOptional = 55,
-	ScriptEnforcedLeaseRequired = 2022,
-	ScriptEnforcedLeaseOptional = 2023,
-	SimpleTaprootChannelsRequiredFinal = 80,
-	SimpleTaprootChannelsOptionalFinal = 81,
-	SimpleTaprootChannelsRequiredStaging = 180,
-	SimpleTaprootChannelsOptionalStaging = 181,
-	MaxBolt11Feature = 5114,
-};
-
-export const FeaturesMap = new Map<FeatureBits, string>([
-	[FeatureBits.DataLossProtectRequired, 'data-loss-protect'],
-	[FeatureBits.DataLossProtectOptional, 'data-loss-protect'],
-	[FeatureBits.InitialRoutingSync, 'initial-routing-sync'],
-	[FeatureBits.UpfrontShutdownScriptRequired, 'upfront-shutdown-script'],
-	[FeatureBits.UpfrontShutdownScriptOptional, 'upfront-shutdown-script'],
-	[FeatureBits.GossipQueriesRequired, 'gossip-queries'],
-	[FeatureBits.GossipQueriesOptional, 'gossip-queries'],
-	[FeatureBits.TLVOnionPayloadRequired, 'tlv-onion'],
-	[FeatureBits.TLVOnionPayloadOptional, 'tlv-onion'],
-	[FeatureBits.StaticRemoteKeyOptional, 'static-remote-key'],
-	[FeatureBits.StaticRemoteKeyRequired, 'static-remote-key'],
-	[FeatureBits.PaymentAddrOptional, 'payment-addr'],
-	[FeatureBits.PaymentAddrRequired, 'payment-addr'],
-	[FeatureBits.MPPOptional, 'multi-path-payments'],
-	[FeatureBits.MPPRequired, 'multi-path-payments'],
-	[FeatureBits.AnchorsRequired, 'anchor-commitments'],
-	[FeatureBits.AnchorsOptional, 'anchor-commitments'],
-	[FeatureBits.AnchorsZeroFeeHtlcTxRequired, 'anchors-zero-fee-htlc-tx'],
-	[FeatureBits.AnchorsZeroFeeHtlcTxOptional, 'anchors-zero-fee-htlc-tx'],
-	[FeatureBits.WumboChannelsRequired, 'wumbo-channels'],
-	[FeatureBits.WumboChannelsOptional, 'wumbo-channels'],
-	[FeatureBits.AMPRequired, 'amp'],
-	[FeatureBits.AMPOptional, 'amp'],
-	[FeatureBits.PaymentMetadataOptional, 'payment-metadata'],
-	[FeatureBits.PaymentMetadataRequired, 'payment-metadata'],
-	[FeatureBits.ExplicitChannelTypeOptional, 'explicit-commitment-type'],
-	[FeatureBits.ExplicitChannelTypeRequired, 'explicit-commitment-type'],
-	[FeatureBits.KeysendOptional, 'keysend'],
-	[FeatureBits.KeysendRequired, 'keysend'],
-	[FeatureBits.ScriptEnforcedLeaseRequired, 'script-enforced-lease'],
-	[FeatureBits.ScriptEnforcedLeaseOptional, 'script-enforced-lease'],
-	[FeatureBits.ScidAliasRequired, 'scid-alias'],
-	[FeatureBits.ScidAliasOptional, 'scid-alias'],
-	[FeatureBits.ZeroConfRequired, 'zero-conf'],
-	[FeatureBits.ZeroConfOptional, 'zero-conf'],
-	[FeatureBits.ShutdownAnySegwitRequired, 'shutdown-any-segwit'],
-	[FeatureBits.ShutdownAnySegwitOptional, 'shutdown-any-segwit'],
-	[FeatureBits.SimpleTaprootChannelsRequiredFinal, 'taproot-channels'],
-	[FeatureBits.SimpleTaprootChannelsOptionalFinal, 'taproot-channels'],
-	[FeatureBits.SimpleTaprootChannelsRequiredStaging, 'taproot-channels-staging'],
-	[FeatureBits.SimpleTaprootChannelsOptionalStaging, 'taproot-channels-staging'],
-]);
-
-/**
- * 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 ${clNode.nodeid}). Reason: ` + (e instanceof Error ? e.message : e));
-      custom_records = undefined;
-    }
-  }
-
-  const nodeFeatures: ILightningApi.Feature[] = [];
-  const nodeFeaturesBinary = hex2bin(clNode.features).split('').reverse().join('');
-
-  for (let i = 0; i < nodeFeaturesBinary.length; i++) {
-    if (nodeFeaturesBinary[i] === '0') {
-      continue;
-    }
-    const feature = FeaturesMap.get(i);
-    if (!feature) {
-      nodeFeatures.push({
-        bit: i,
-        name: 'unknown',
-        is_required: i % 2 === 0,
-        is_known: false
-      });
-    } else {
-      nodeFeatures.push({
-        bit: i,
-        name: feature,
-        is_required: i % 2 === 0,
-        is_known: true
-      });
-    }
-  }
-
-  return {
-    alias: clNode.alias ?? '',
-    color: `#${clNode.color ?? ''}`,
-    features: nodeFeatures,
-    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.amount_msat / 1000).toString(),
-    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.$fetchChannelOpenTx(clChannel.short_channel_id);
-  if (!tx) {
-    return null;
-  }
-  const parts = clChannel.short_channel_id.split('x');
-  const outputIdx = parts[2];
-
-  return {
-    channel_id: Common.channelShortIdToIntegerId(clChannel.short_channel_id),
-    capacity: (clChannel.amount_msat / 1000).toString(),
-    last_update: clChannel.last_update ?? 0,
-    node1_policy: convertPolicy(clChannel),
-    node2_policy: null,
-    chan_point: `${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.toString(),
-    max_htlc_msat: clChannel.htlc_maximum_msat.toString(),
-    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();