Rust GBT proof of concept
This commit is contained in:
Mononaut
parent
cd181a0fbb
commit
63713ca4ed
@ -22,7 +22,7 @@
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"main": "index.ts",
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"scripts": {
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"tsc": "./node_modules/typescript/bin/tsc -p tsconfig.build.json",
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"build": "npm run tsc && npm run create-resources",
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"build": "npm run build-rust && npm run tsc && npm run create-resources",
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"create-resources": "cp ./src/tasks/price-feeds/mtgox-weekly.json ./dist/tasks && node dist/api/fetch-version.js",
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"package": "npm run build && rm -rf package && mv dist package && mv node_modules package && npm run package-rm-build-deps",
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"package-rm-build-deps": "(cd package/node_modules; rm -r typescript @typescript-eslint)",
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@ -33,7 +33,8 @@
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"test": "./node_modules/.bin/jest --coverage",
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"lint": "./node_modules/.bin/eslint . --ext .ts",
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"lint:fix": "./node_modules/.bin/eslint . --ext .ts --fix",
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"prettier": "./node_modules/.bin/prettier --write \"src/**/*.{js,ts}\""
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"prettier": "./node_modules/.bin/prettier --write \"src/**/*.{js,ts}\"",
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"build-rust": "cd rust-gbt && npm install"
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},
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"dependencies": {
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"@babel/core": "^7.21.3",
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5
backend/rust-gbt/.gitignore
vendored
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5
backend/rust-gbt/.gitignore
vendored
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@ -0,0 +1,5 @@
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target
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index.node
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**/node_modules
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**/.DS_Store
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npm-debug.log*
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156
backend/rust-gbt/Cargo.lock
generated
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156
backend/rust-gbt/Cargo.lock
generated
Normal file
@ -0,0 +1,156 @@
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 3
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[[package]]
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name = "cfg-if"
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[[package]]
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name = "gbt"
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version = "0.1.0"
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dependencies = [
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"neon",
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]
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"neon-macros",
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"neon-runtime",
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"semver",
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[[package]]
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name = "neon-runtime"
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dependencies = [
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"cfg-if",
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"libloading",
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"smallvec",
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[[package]]
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name = "proc-macro2"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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[[package]]
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name = "quote"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"proc-macro2",
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]
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[[package]]
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name = "semver"
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version = "0.9.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
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dependencies = [
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"semver-parser",
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]
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[[package]]
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name = "semver-parser"
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version = "0.7.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
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[[package]]
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name = "smallvec"
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version = "1.10.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "a507befe795404456341dfab10cef66ead4c041f62b8b11bbb92bffe5d0953e0"
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[[package]]
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name = "syn"
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version = "1.0.109"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "72b64191b275b66ffe2469e8af2c1cfe3bafa67b529ead792a6d0160888b4237"
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dependencies = [
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"proc-macro2",
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"quote",
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"unicode-ident",
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]
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[[package]]
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name = "syn-mid"
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version = "0.5.3"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "baa8e7560a164edb1621a55d18a0c59abf49d360f47aa7b821061dd7eea7fac9"
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dependencies = [
|
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"proc-macro2",
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"quote",
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"syn",
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]
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[[package]]
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name = "unicode-ident"
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version = "1.0.9"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b15811caf2415fb889178633e7724bad2509101cde276048e013b9def5e51fa0"
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[[package]]
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name = "winapi"
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version = "0.3.9"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
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dependencies = [
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"winapi-i686-pc-windows-gnu",
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"winapi-x86_64-pc-windows-gnu",
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]
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[[package]]
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name = "winapi-i686-pc-windows-gnu"
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version = "0.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
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[[package]]
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name = "winapi-x86_64-pc-windows-gnu"
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version = "0.4.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
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21
backend/rust-gbt/Cargo.toml
Normal file
21
backend/rust-gbt/Cargo.toml
Normal file
@ -0,0 +1,21 @@
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[package]
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name = "gbt"
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version = "0.1.0"
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description = "An inefficient re-implementation of the getBlockTemplate algorithm in Rust"
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authors = ["mononaut"]
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edition = "2018"
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exclude = ["index.node"]
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[lib]
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crate-type = ["cdylib"]
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# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
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[dependencies]
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priority-queue = "1.3.2"
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bytes = "1.4.0"
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[dependencies.neon]
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version = "0.10"
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default-features = false
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features = ["napi-6","channel-api"]
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121
backend/rust-gbt/README.md
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121
backend/rust-gbt/README.md
Normal file
@ -0,0 +1,121 @@
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# gbt
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**gbt:** rust implementation of the getBlockTemplate algorithm
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This project was bootstrapped by [create-neon](https://www.npmjs.com/package/create-neon).
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## Installing gbt
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Installing gbt requires a [supported version of Node and Rust](https://github.com/neon-bindings/neon#platform-support).
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You can install the project with npm. In the project directory, run:
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```sh
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$ npm install
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```
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This fully installs the project, including installing any dependencies and running the build.
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## Building gbt
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If you have already installed the project and only want to run the build, run:
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```sh
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$ npm run build
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```
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This command uses the [cargo-cp-artifact](https://github.com/neon-bindings/cargo-cp-artifact) utility to run the Rust build and copy the built library into `./index.node`.
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## Exploring gbt
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After building gbt, you can explore its exports at the Node REPL:
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```sh
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$ npm install
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$ node
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> require('.').hello()
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"hello node"
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```
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## Available Scripts
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In the project directory, you can run:
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### `npm install`
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Installs the project, including running `npm run build`.
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### `npm build`
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Builds the Node addon (`index.node`) from source.
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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):
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```
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npm run build -- --feature=beetle
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```
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#### `npm build-debug`
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Alias for `npm build`.
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#### `npm build-release`
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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.
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### `npm test`
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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/).
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## Project Layout
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The directory structure of this project is:
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```
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gbt/
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├── Cargo.toml
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├── README.md
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├── index.node
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├── package.json
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├── src/
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| └── lib.rs
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└── target/
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```
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### Cargo.toml
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The Cargo [manifest file](https://doc.rust-lang.org/cargo/reference/manifest.html), which informs the `cargo` command.
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### README.md
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This file.
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### index.node
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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`.
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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.
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### package.json
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The npm [manifest file](https://docs.npmjs.com/cli/v7/configuring-npm/package-json), which informs the `npm` command.
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### src/
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The directory tree containing the Rust source code for the project.
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### src/lib.rs
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The Rust library's main module.
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### target/
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Binary artifacts generated by the Rust build.
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## Learn More
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To learn more about Neon, see the [Neon documentation](https://neon-bindings.com).
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||||
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To learn more about Rust, see the [Rust documentation](https://www.rust-lang.org).
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To learn more about Node, see the [Node documentation](https://nodejs.org).
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25
backend/rust-gbt/package-lock.json
generated
Normal file
25
backend/rust-gbt/package-lock.json
generated
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@ -0,0 +1,25 @@
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{
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"name": "gbt",
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"version": "0.1.0",
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"lockfileVersion": 3,
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"requires": true,
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"packages": {
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"": {
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"name": "gbt",
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"version": "0.1.0",
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"hasInstallScript": true,
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"devDependencies": {
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"cargo-cp-artifact": "^0.1"
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}
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},
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"node_modules/cargo-cp-artifact": {
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"version": "0.1.8",
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"resolved": "https://registry.npmjs.org/cargo-cp-artifact/-/cargo-cp-artifact-0.1.8.tgz",
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"integrity": "sha512-3j4DaoTrsCD1MRkTF2Soacii0Nx7UHCce0EwUf4fHnggwiE4fbmF2AbnfzayR36DF8KGadfh7M/Yfy625kgPlA==",
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"dev": true,
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"bin": {
|
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"cargo-cp-artifact": "bin/cargo-cp-artifact.js"
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}
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}
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}
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}
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17
backend/rust-gbt/package.json
Normal file
17
backend/rust-gbt/package.json
Normal file
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{
|
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"name": "gbt",
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"version": "0.1.0",
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"description": "An inefficient re-implementation of the getBlockTemplate algorithm in Rust",
|
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"main": "index.node",
|
||||
"scripts": {
|
||||
"build": "cargo-cp-artifact -nc index.node -- cargo build --message-format=json-render-diagnostics",
|
||||
"build-debug": "npm run build --",
|
||||
"build-release": "npm run build -- --release",
|
||||
"install": "npm run build-release",
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||||
"test": "cargo test"
|
||||
},
|
||||
"author": "mononaut",
|
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"devDependencies": {
|
||||
"cargo-cp-artifact": "^0.1"
|
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}
|
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}
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53
backend/rust-gbt/src/audit_transaction.rs
Normal file
53
backend/rust-gbt/src/audit_transaction.rs
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@ -0,0 +1,53 @@
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use std::{collections::{HashSet}, hash::{Hash, Hasher}, cmp::Ordering};
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#[derive(Clone)]
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pub struct AuditTransaction {
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||||
pub uid: u32,
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pub fee: u64,
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pub weight: u32,
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||||
pub sigops: u32,
|
||||
pub fee_per_vsize: f64,
|
||||
pub effective_fee_per_vsize: f64,
|
||||
pub dependency_rate: f64,
|
||||
pub inputs: Vec<u32>,
|
||||
pub is_relatives_set: bool,
|
||||
pub ancestors: HashSet<u32>,
|
||||
pub children: HashSet<u32>,
|
||||
pub ancestor_fee: u64,
|
||||
pub ancestor_weight: u32,
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||||
pub ancestor_sigops: u32,
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||||
pub score: f64,
|
||||
pub used: bool,
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||||
pub modified: bool,
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||||
pub dirty: bool,
|
||||
}
|
||||
|
||||
impl Hash for AuditTransaction {
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||||
fn hash<H: Hasher>(&self, state: &mut H) {
|
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self.uid.hash(state);
|
||||
}
|
||||
}
|
||||
|
||||
impl PartialEq for AuditTransaction {
|
||||
fn eq(&self, other: &Self) -> bool {
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||||
self.uid == other.uid
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||||
}
|
||||
}
|
||||
|
||||
impl Eq for AuditTransaction {}
|
||||
|
||||
impl PartialOrd for AuditTransaction {
|
||||
fn partial_cmp(&self, other: &AuditTransaction) -> Option<Ordering> {
|
||||
if self.score == other.score {
|
||||
return Some(self.uid.cmp(&other.uid));
|
||||
} else {
|
||||
return self.score.partial_cmp(&other.score);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Ord for AuditTransaction {
|
||||
fn cmp(&self, other: &AuditTransaction) -> Ordering {
|
||||
self.partial_cmp(other).unwrap()
|
||||
}
|
||||
}
|
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312
backend/rust-gbt/src/gbt.rs
Normal file
312
backend/rust-gbt/src/gbt.rs
Normal file
@ -0,0 +1,312 @@
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use std::cmp::Ordering;
|
||||
use std::collections::{HashMap, HashSet, VecDeque};
|
||||
use std::f64::INFINITY;
|
||||
use priority_queue::PriorityQueue;
|
||||
|
||||
use crate::thread_transaction::{ThreadTransaction};
|
||||
use crate::audit_transaction::{AuditTransaction};
|
||||
|
||||
const BLOCK_WEIGHT_UNITS: u32 = 4_000_000;
|
||||
const BLOCK_SIGOPS: u32 = 80_000;
|
||||
|
||||
struct TxPriority {
|
||||
uid: 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: &TxPriority) -> Option<Ordering> {
|
||||
if self.score == other.score {
|
||||
return Some(self.uid.cmp(&other.uid));
|
||||
} else {
|
||||
return other.score.partial_cmp(&self.score);
|
||||
}
|
||||
}
|
||||
}
|
||||
impl Ord for TxPriority {
|
||||
fn cmp(&self, other: &Self) -> Ordering {
|
||||
self.partial_cmp(other).unwrap()
|
||||
}
|
||||
}
|
||||
|
||||
pub fn gbt(mempool_array: Vec<ThreadTransaction>) -> (Vec<Vec<u32>>, Vec<(u32, f64)>, Vec<Vec<u32>>) {
|
||||
let mut mempool: HashMap<u32,ThreadTransaction> = HashMap::new();
|
||||
for transaction in mempool_array {
|
||||
mempool.insert(transaction.uid, transaction);
|
||||
}
|
||||
|
||||
|
||||
return make_block_templates(mempool);
|
||||
}
|
||||
|
||||
/*
|
||||
* Build projected mempool blocks using an approximation of the transaction selection algorithm from Bitcoin Core
|
||||
* (see BlockAssembler in https://github.com/bitcoin/bitcoin/blob/master/src/node/miner.cpp)
|
||||
* Ported from https://github.com/mempool/mempool/blob/master/backend/src/api/tx-selection-worker.ts
|
||||
*/
|
||||
fn make_block_templates(mempool: HashMap<u32,ThreadTransaction>) -> (Vec<Vec<u32>>, Vec<(u32, f64)>, Vec<Vec<u32>>) {
|
||||
let mut audit_pool: HashMap<u32, AuditTransaction> = HashMap::new();
|
||||
let mut mempool_array: VecDeque<u32> = VecDeque::new();
|
||||
let mut cluster_array: Vec<Vec<u32>> = Vec::new();
|
||||
|
||||
// Initialize working structs
|
||||
for (uid, tx) in &mempool {
|
||||
let audit_tx = AuditTransaction {
|
||||
uid: tx.uid,
|
||||
fee: tx.fee,
|
||||
weight: tx.weight,
|
||||
sigops: tx.sigops,
|
||||
fee_per_vsize: tx.fee_per_vsize,
|
||||
effective_fee_per_vsize: tx.effective_fee_per_vsize,
|
||||
dependency_rate: INFINITY,
|
||||
inputs: tx.inputs.clone(),
|
||||
is_relatives_set: false,
|
||||
ancestors: HashSet::new(),
|
||||
children: HashSet::new(),
|
||||
ancestor_fee: tx.fee,
|
||||
ancestor_weight: tx.weight,
|
||||
ancestor_sigops: tx.sigops,
|
||||
score: 0.0,
|
||||
used: false,
|
||||
modified: false,
|
||||
dirty: false,
|
||||
};
|
||||
audit_pool.insert(audit_tx.uid, audit_tx);
|
||||
mempool_array.push_back(*uid);
|
||||
}
|
||||
|
||||
// Build relatives graph & calculate ancestor scores
|
||||
for txid in &mempool_array {
|
||||
set_relatives(*txid, &mut audit_pool);
|
||||
}
|
||||
|
||||
// Sort by descending ancestor score
|
||||
mempool_array.make_contiguous().sort_unstable_by(|a, b| {
|
||||
let a_tx = audit_pool.get(a).unwrap();
|
||||
let b_tx = audit_pool.get(b).unwrap();
|
||||
b_tx.cmp(a_tx)
|
||||
});
|
||||
|
||||
// Build blocks by greedily choosing the highest feerate package
|
||||
// (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 = 4000;
|
||||
let mut block_sigops: u32 = 0;
|
||||
let mut transactions: Vec<u32> = Vec::new();
|
||||
let mut modified: PriorityQueue<u32, TxPriority> = PriorityQueue::new();
|
||||
let mut overflow: Vec<u32> = Vec::new();
|
||||
let mut failures = 0;
|
||||
while mempool_array.len() > 0 || !modified.is_empty() {
|
||||
let next_txid: u32;
|
||||
if modified.is_empty() {
|
||||
next_txid = mempool_array.pop_front().unwrap();
|
||||
} else if mempool_array.len() == 0 {
|
||||
next_txid = modified.pop().unwrap().0;
|
||||
} else {
|
||||
let next_array_txid = mempool_array.front().unwrap();
|
||||
let next_modified_txid = modified.peek().unwrap().0;
|
||||
let array_tx: &AuditTransaction = audit_pool.get(next_array_txid).unwrap();
|
||||
let modified_tx: &AuditTransaction = audit_pool.get(next_modified_txid).unwrap();
|
||||
match array_tx.cmp(&modified_tx) {
|
||||
std::cmp::Ordering::Equal | std::cmp::Ordering::Greater => {
|
||||
next_txid = mempool_array.pop_front().unwrap();
|
||||
}
|
||||
std::cmp::Ordering::Less => {
|
||||
next_txid = modified.pop().unwrap().0;
|
||||
}
|
||||
}
|
||||
}
|
||||
let next_tx: AuditTransaction = audit_pool.get(&next_txid).unwrap().clone();
|
||||
|
||||
if next_tx.used {
|
||||
continue;
|
||||
}
|
||||
|
||||
if blocks.len() < 7 && ((block_weight + next_tx.ancestor_weight >= 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_txid);
|
||||
failures += 1;
|
||||
} else {
|
||||
let mut package: Vec<(u32, usize, u32)> = Vec::new();
|
||||
let mut cluster: Vec<u32> = Vec::new();
|
||||
let is_cluster: bool = next_tx.ancestors.len() > 0;
|
||||
package.push((next_tx.uid, next_tx.ancestors.len(), next_tx.weight));
|
||||
cluster.push(next_tx.uid);
|
||||
for ancestor_id in &next_tx.ancestors {
|
||||
if let Some(ancestor) = audit_pool.get(ancestor_id) {
|
||||
package.push((*ancestor_id, ancestor.ancestors.len(), ancestor.weight));
|
||||
cluster.push(*ancestor_id);
|
||||
}
|
||||
}
|
||||
package.sort_unstable_by_key(|a| 0 - a.1);
|
||||
|
||||
if is_cluster {
|
||||
cluster_array.push(cluster);
|
||||
}
|
||||
|
||||
let cluster_rate = next_tx.dependency_rate.min(next_tx.ancestor_fee as f64 / (next_tx.ancestor_weight as f64 / 4.0));
|
||||
|
||||
for package_entry in &package {
|
||||
if let Some(tx) = audit_pool.get_mut(&package_entry.0) {
|
||||
tx.used = true;
|
||||
if tx.effective_fee_per_vsize != cluster_rate {
|
||||
tx.effective_fee_per_vsize = cluster_rate;
|
||||
tx.dirty = true;
|
||||
}
|
||||
transactions.push(tx.uid);
|
||||
block_weight += tx.weight;
|
||||
block_sigops += tx.sigops;
|
||||
}
|
||||
update_descendants(package_entry.0, &mut audit_pool, &mut modified, cluster_rate);
|
||||
}
|
||||
|
||||
failures = 0;
|
||||
}
|
||||
|
||||
// this block is full
|
||||
let exceeded_package_tries = failures > 1000 && block_weight > (BLOCK_WEIGHT_UNITS - 4000);
|
||||
let queue_is_empty = mempool_array.len() == 0 && modified.is_empty();
|
||||
if (exceeded_package_tries || queue_is_empty) && blocks.len() < 7 {
|
||||
// finalize this block
|
||||
if transactions.len() > 0 {
|
||||
blocks.push(transactions);
|
||||
}
|
||||
// reset for the next block
|
||||
transactions = Vec::new();
|
||||
block_weight = 4000;
|
||||
// 'overflow' packages didn't fit in this block, but are valid candidates for the next
|
||||
overflow.reverse();
|
||||
for overflowed in &overflow {
|
||||
if let Some(overflowed_tx) = audit_pool.get(overflowed) {
|
||||
if overflowed_tx.modified {
|
||||
modified.push(*overflowed, TxPriority{ uid: *overflowed, score: overflowed_tx.score});
|
||||
} else {
|
||||
mempool_array.push_front(*overflowed);
|
||||
}
|
||||
}
|
||||
}
|
||||
overflow = Vec::new();
|
||||
}
|
||||
}
|
||||
// add the final unbounded block if it contains any transactions
|
||||
if transactions.len() > 0 {
|
||||
blocks.push(transactions);
|
||||
}
|
||||
|
||||
// make a list of dirty transactions and their new rates
|
||||
let mut rates: Vec<(u32, f64)> = Vec::new();
|
||||
for (txid, tx) in audit_pool {
|
||||
if tx.dirty {
|
||||
rates.push((txid, tx.effective_fee_per_vsize));
|
||||
}
|
||||
}
|
||||
|
||||
return (blocks, rates, cluster_array);
|
||||
}
|
||||
|
||||
fn set_relatives(txid: u32, audit_pool: &mut HashMap<u32, AuditTransaction>) {
|
||||
let mut parents: HashSet<u32> = HashSet::new();
|
||||
if let Some(tx) = audit_pool.get(&txid) {
|
||||
if tx.is_relatives_set {
|
||||
return;
|
||||
}
|
||||
for input in &tx.inputs {
|
||||
parents.insert(*input);
|
||||
}
|
||||
} else {
|
||||
return;
|
||||
}
|
||||
|
||||
let mut ancestors: HashSet<u32> = HashSet::new();
|
||||
for parent_id in &parents {
|
||||
set_relatives(*parent_id, audit_pool);
|
||||
|
||||
let parent_entry: Option<&mut AuditTransaction> = audit_pool.get_mut(&parent_id);
|
||||
match parent_entry {
|
||||
Some(parent) => {
|
||||
ancestors.insert(*parent_id);
|
||||
parent.children.insert(txid);
|
||||
for ancestor in &parent.ancestors {
|
||||
ancestors.insert(*ancestor);
|
||||
}
|
||||
}
|
||||
|
||||
None => {}
|
||||
}
|
||||
}
|
||||
|
||||
let mut total_fee: u64 = 0;
|
||||
let mut total_weight: u32 = 0;
|
||||
let mut total_sigops: u32 = 0;
|
||||
|
||||
for ancestor_id in &ancestors {
|
||||
let ancestor = audit_pool.get(&ancestor_id).unwrap();
|
||||
total_fee += ancestor.fee;
|
||||
total_weight += ancestor.weight;
|
||||
total_sigops += ancestor.sigops;
|
||||
}
|
||||
|
||||
if let Some(tx) = audit_pool.get_mut(&txid) {
|
||||
tx.ancestors = ancestors;
|
||||
tx.ancestor_fee = tx.fee + total_fee;
|
||||
tx.ancestor_weight = tx.weight + total_weight;
|
||||
tx.ancestor_sigops = tx.sigops + total_sigops;
|
||||
tx.score = (tx.ancestor_fee as f64) / (if tx.ancestor_weight != 0 {tx.ancestor_weight as f64 / 4.0} else { 1.0 });
|
||||
tx.is_relatives_set = true;
|
||||
}
|
||||
}
|
||||
|
||||
// iterate over remaining descendants, removing the root as a valid ancestor & updating the ancestor score
|
||||
fn update_descendants(root_txid: u32, audit_pool: &mut HashMap<u32, AuditTransaction>, modified: &mut PriorityQueue<u32, TxPriority>, cluster_rate: f64) {
|
||||
let mut visited: HashSet<u32> = HashSet::new();
|
||||
let mut descendant_stack: Vec<u32> = Vec::new();
|
||||
let root_fee: u64;
|
||||
let root_weight: u32;
|
||||
let root_sigops: u32;
|
||||
if let Some(root_tx) = audit_pool.get(&root_txid) {
|
||||
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_weight = root_tx.weight;
|
||||
root_sigops = root_tx.sigops;
|
||||
} else {
|
||||
return;
|
||||
}
|
||||
while descendant_stack.len() > 0 {
|
||||
let next_txid: u32 = descendant_stack.pop().unwrap();
|
||||
if let Some(descendant) = audit_pool.get_mut(&next_txid) {
|
||||
// remove root tx as ancestor
|
||||
descendant.ancestors.remove(&root_txid);
|
||||
descendant.ancestor_fee -= root_fee;
|
||||
descendant.ancestor_weight -= root_weight;
|
||||
descendant.ancestor_sigops -= root_sigops;
|
||||
let current_score = descendant.score;
|
||||
descendant.score = (descendant.ancestor_fee as f64) / (if descendant.ancestor_weight != 0 {descendant.ancestor_weight as f64 / 4.0} else { 1.0 });
|
||||
descendant.dependency_rate = descendant.dependency_rate.min(cluster_rate);
|
||||
descendant.modified = true;
|
||||
// update modified priority if score has changed
|
||||
if !descendant.modified || descendant.score < current_score {
|
||||
modified.push_decrease(descendant.uid, TxPriority { uid: descendant.uid, score: descendant.score});
|
||||
} else if descendant.score > current_score {
|
||||
modified.push_increase(descendant.uid, TxPriority { uid: descendant.uid, 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);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
75
backend/rust-gbt/src/lib.rs
Normal file
75
backend/rust-gbt/src/lib.rs
Normal file
@ -0,0 +1,75 @@
|
||||
use neon::{prelude::*, types::buffer::TypedArray};
|
||||
|
||||
mod gbt;
|
||||
mod thread_transaction;
|
||||
mod audit_transaction;
|
||||
use thread_transaction::{ThreadTransaction};
|
||||
|
||||
fn go(mut cx: FunctionContext) -> JsResult<JsUndefined> {
|
||||
let mempool_arg = cx.argument::<JsArrayBuffer>(0)?.root(&mut cx).into_inner(&mut cx);
|
||||
let callback = cx.argument::<JsFunction>(1)?.root(&mut cx);
|
||||
let channel = cx.channel();
|
||||
|
||||
let buffer = mempool_arg.as_slice(&mut cx);
|
||||
let thread_transactions = ThreadTransaction::batch_from_buffer(buffer);
|
||||
|
||||
std::thread::spawn(move || {
|
||||
let (blocks, rates, clusters) = gbt::gbt(thread_transactions);
|
||||
|
||||
channel.send(move |mut cx| {
|
||||
let result = JsObject::new(&mut cx);
|
||||
|
||||
let js_blocks = JsArray::new(&mut cx, blocks.len() as u32);
|
||||
for (i, block) in blocks.iter().enumerate() {
|
||||
let inner = JsArray::new(&mut cx, block.len() as u32);
|
||||
for (j, uid) in block.iter().enumerate() {
|
||||
let v = cx.number(*uid);
|
||||
inner.set(&mut cx, j as u32, v)?;
|
||||
}
|
||||
js_blocks.set(&mut cx, i as u32, inner)?;
|
||||
}
|
||||
|
||||
let js_clusters = JsArray::new(&mut cx, clusters.len() as u32);
|
||||
for (i, cluster) in clusters.iter().enumerate() {
|
||||
let inner = JsArray::new(&mut cx, cluster.len() as u32);
|
||||
for (j, uid) in cluster.iter().enumerate() {
|
||||
let v = cx.number(*uid);
|
||||
inner.set(&mut cx, j as u32, v)?;
|
||||
}
|
||||
js_clusters.set(&mut cx, i as u32, inner)?;
|
||||
}
|
||||
|
||||
let js_rates = JsArray::new(&mut cx, rates.len() as u32);
|
||||
for (i, (uid, rate)) in rates.iter().enumerate() {
|
||||
let inner = JsArray::new(&mut cx, 2);
|
||||
let js_uid = cx.number(*uid);
|
||||
let js_rate = cx.number(*rate);
|
||||
inner.set(&mut cx, 0, js_uid)?;
|
||||
inner.set(&mut cx, 1, js_rate)?;
|
||||
js_rates.set(&mut cx, i as u32, inner)?;
|
||||
}
|
||||
|
||||
result.set(&mut cx, "blocks", js_blocks)?;
|
||||
result.set(&mut cx, "clusters", js_clusters)?;
|
||||
result.set(&mut cx, "rates", js_rates)?;
|
||||
|
||||
let callback = callback.into_inner(&mut cx);
|
||||
let this = cx.undefined();
|
||||
let args = vec![
|
||||
result.upcast()
|
||||
];
|
||||
|
||||
callback.call(&mut cx, this, args)?;
|
||||
|
||||
Ok(())
|
||||
});
|
||||
});
|
||||
|
||||
Ok(cx.undefined())
|
||||
}
|
||||
|
||||
#[neon::main]
|
||||
fn main(mut cx: ModuleContext) -> NeonResult<()> {
|
||||
cx.export_function("go", go)?;
|
||||
Ok(())
|
||||
}
|
||||
45
backend/rust-gbt/src/thread_transaction.rs
Normal file
45
backend/rust-gbt/src/thread_transaction.rs
Normal file
@ -0,0 +1,45 @@
|
||||
// use neon::{types::{JsObject, JsNumber, JsArray, JsValue, JsBoolean, JsArrayBuffer, buffer::TypedArray}, prelude::{Object, FunctionContext, Handle}};
|
||||
extern crate bytes;
|
||||
use std::io::Cursor;
|
||||
use bytes::buf::Buf;
|
||||
pub struct ThreadTransaction {
|
||||
pub uid: u32,
|
||||
pub fee: u64,
|
||||
pub weight: u32,
|
||||
pub sigops: u32,
|
||||
pub fee_per_vsize: f64,
|
||||
pub effective_fee_per_vsize: f64,
|
||||
pub inputs: Vec<u32>,
|
||||
}
|
||||
|
||||
impl ThreadTransaction {
|
||||
pub fn batch_from_buffer(buffer: &[u8]) -> Vec<ThreadTransaction> {
|
||||
let mut transactions: Vec<ThreadTransaction> = Vec::new();
|
||||
let mut cursor = Cursor::new(buffer);
|
||||
let size = cursor.get_u32();
|
||||
for _ in 0..size {
|
||||
let uid = cursor.get_u32();
|
||||
let fee = cursor.get_f64() as u64;
|
||||
let weight = cursor.get_u32();
|
||||
let sigops = cursor.get_u32();
|
||||
let fee_per_vsize = cursor.get_f64();
|
||||
let effective_fee_per_vsize = cursor.get_f64();
|
||||
let input_count = cursor.get_u32();
|
||||
let mut inputs: Vec<u32> = Vec::new();
|
||||
for _ in 0..input_count {
|
||||
inputs.push(cursor.get_u32());
|
||||
}
|
||||
transactions.push(ThreadTransaction {
|
||||
uid,
|
||||
fee,
|
||||
weight,
|
||||
sigops,
|
||||
fee_per_vsize,
|
||||
effective_fee_per_vsize,
|
||||
inputs,
|
||||
})
|
||||
}
|
||||
|
||||
return transactions;
|
||||
}
|
||||
}
|
||||
@ -1,10 +1,12 @@
|
||||
import logger from '../logger';
|
||||
import { MempoolBlock, MempoolTransactionExtended, TransactionStripped, MempoolBlockWithTransactions, MempoolBlockDelta, Ancestor, CompactThreadTransaction, EffectiveFeeStats } from '../mempool.interfaces';
|
||||
import { MempoolBlock, MempoolTransactionExtended, TransactionStripped, MempoolBlockWithTransactions, MempoolBlockDelta, Ancestor, CompactThreadTransaction, EffectiveFeeStats, AuditTransaction } from '../mempool.interfaces';
|
||||
import { Common, OnlineFeeStatsCalculator } from './common';
|
||||
import config from '../config';
|
||||
import { Worker } from 'worker_threads';
|
||||
import path from 'path';
|
||||
|
||||
const neonAddon = require('../../rust-gbt');
|
||||
|
||||
class MempoolBlocks {
|
||||
private mempoolBlocks: MempoolBlockWithTransactions[] = [];
|
||||
private mempoolBlockDeltas: MempoolBlockDelta[] = [];
|
||||
@ -219,7 +221,7 @@ class MempoolBlocks {
|
||||
const strippedMempool: Map<number, CompactThreadTransaction> = new Map();
|
||||
Object.values(newMempool).forEach(entry => {
|
||||
if (entry.uid != null) {
|
||||
strippedMempool.set(entry.uid, {
|
||||
const stripped = {
|
||||
uid: entry.uid,
|
||||
fee: entry.fee,
|
||||
weight: (entry.adjustedVsize * 4),
|
||||
@ -227,7 +229,8 @@ class MempoolBlocks {
|
||||
feePerVsize: entry.adjustedFeePerVsize || entry.feePerVsize,
|
||||
effectiveFeePerVsize: entry.effectiveFeePerVsize || entry.adjustedFeePerVsize || entry.feePerVsize,
|
||||
inputs: entry.vin.map(v => this.getUid(newMempool[v.txid])).filter(uid => uid != null) as number[],
|
||||
});
|
||||
};
|
||||
strippedMempool.set(entry.uid, stripped);
|
||||
}
|
||||
});
|
||||
|
||||
@ -261,7 +264,9 @@ class MempoolBlocks {
|
||||
this.txSelectionWorker?.removeListener('error', threadErrorListener);
|
||||
|
||||
const processed = this.processBlockTemplates(newMempool, blocks, rates, clusters, saveResults);
|
||||
|
||||
logger.debug(`makeBlockTemplates completed in ${(Date.now() - start)/1000} seconds`);
|
||||
|
||||
return processed;
|
||||
} catch (e) {
|
||||
logger.err('makeBlockTemplates failed. ' + (e instanceof Error ? e.message : e));
|
||||
@ -321,6 +326,36 @@ class MempoolBlocks {
|
||||
}
|
||||
}
|
||||
|
||||
public async $rustMakeBlockTemplates(newMempool: { [txid: string]: MempoolTransactionExtended }, saveResults: boolean = false): Promise<MempoolBlockWithTransactions[]> {
|
||||
const start = Date.now();
|
||||
|
||||
// reset mempool short ids
|
||||
this.resetUids();
|
||||
for (const tx of Object.values(newMempool)) {
|
||||
this.setUid(tx);
|
||||
}
|
||||
|
||||
// serialize relevant mempool data into an ArrayBuffer
|
||||
// to reduce the overhead of passing this data to the rust thread
|
||||
const mempoolBuffer = this.mempoolToArrayBuffer(newMempool);
|
||||
|
||||
// run the block construction algorithm in a separate thread, and wait for a result
|
||||
try {
|
||||
const { blocks, rates, clusters } = this.convertNeonResultTxids(await new Promise((resolve) => { neonAddon.go(mempoolBuffer, resolve); }));
|
||||
const processed = this.processBlockTemplates(newMempool, blocks, rates, clusters, saveResults);
|
||||
logger.debug(`RUST makeBlockTemplates completed in ${(Date.now() - start)/1000} seconds`);
|
||||
return processed;
|
||||
} catch (e) {
|
||||
logger.err('RUST makeBlockTemplates failed. ' + (e instanceof Error ? e.message : e));
|
||||
}
|
||||
return this.mempoolBlocks;
|
||||
}
|
||||
|
||||
public async $rustUpdateBlockTemplates(newMempool: { [txid: string]: MempoolTransactionExtended }, added: MempoolTransactionExtended[], removed: MempoolTransactionExtended[], saveResults: boolean = false): Promise<void> {
|
||||
await this.$rustMakeBlockTemplates(newMempool, saveResults);
|
||||
return;
|
||||
}
|
||||
|
||||
private processBlockTemplates(mempool, blocks: string[][], rates: { [root: string]: number }, clusters: { [root: string]: string[] }, saveResults): MempoolBlockWithTransactions[] {
|
||||
for (const txid of Object.keys(rates)) {
|
||||
if (txid in mempool) {
|
||||
@ -496,6 +531,74 @@ class MempoolBlocks {
|
||||
}
|
||||
return { blocks: convertedBlocks, rates: convertedRates, clusters: convertedClusters } as { blocks: string[][], rates: { [root: string]: number }, clusters: { [root: string]: string[] }};
|
||||
}
|
||||
|
||||
private convertNeonResultTxids({ blocks, rates, clusters }: { blocks: number[][], rates: number[][], clusters: number[][]})
|
||||
: { blocks: string[][], rates: { [root: string]: number }, clusters: { [root: string]: string[] }} {
|
||||
const rateMap = new Map<number, number>();
|
||||
const clusterMap = new Map<number, number[]>();
|
||||
for (const rate of rates) {
|
||||
rateMap.set(rate[0], rate[1]);
|
||||
}
|
||||
for (const cluster of clusters) {
|
||||
clusterMap.set(cluster[0], cluster);
|
||||
}
|
||||
const convertedBlocks: string[][] = blocks.map(block => block.map(uid => {
|
||||
return this.uidMap.get(uid) || '';
|
||||
}));
|
||||
const convertedRates = {};
|
||||
for (const rateUid of rateMap.keys()) {
|
||||
const rateTxid = this.uidMap.get(rateUid);
|
||||
if (rateTxid) {
|
||||
convertedRates[rateTxid] = rateMap.get(rateUid);
|
||||
}
|
||||
}
|
||||
const convertedClusters = {};
|
||||
for (const rootUid of clusterMap.keys()) {
|
||||
const rootTxid = this.uidMap.get(rootUid);
|
||||
if (rootTxid) {
|
||||
const members = clusterMap.get(rootUid)?.map(uid => {
|
||||
return this.uidMap.get(uid);
|
||||
});
|
||||
convertedClusters[rootTxid] = members;
|
||||
}
|
||||
}
|
||||
return { blocks: convertedBlocks, rates: convertedRates, clusters: convertedClusters } as { blocks: string[][], rates: { [root: string]: number }, clusters: { [root: string]: string[] }};
|
||||
}
|
||||
|
||||
private mempoolToArrayBuffer(mempool: { [txid: string]: MempoolTransactionExtended }): ArrayBuffer {
|
||||
let len = 4;
|
||||
const inputs: { [uid: number]: number[] } = {};
|
||||
let validCount = 0;
|
||||
for (const tx of Object.values(mempool)) {
|
||||
if (tx.uid != null) {
|
||||
validCount++;
|
||||
const txInputs = tx.vin.map(v => this.getUid(mempool[v.txid])).filter(uid => uid != null) as number[]
|
||||
inputs[tx.uid] = txInputs;
|
||||
len += (10 + txInputs.length) * 4;
|
||||
}
|
||||
}
|
||||
const buf = new ArrayBuffer(len);
|
||||
const view = new DataView(buf);
|
||||
view.setUint32(0, validCount, false);
|
||||
let offset = 4;
|
||||
for (const tx of Object.values(mempool)) {
|
||||
if (tx.uid != null) {
|
||||
view.setUint32(offset, tx.uid, false);
|
||||
view.setFloat64(offset + 4, tx.fee, false);
|
||||
view.setUint32(offset + 12, (tx.adjustedVsize * 4), false);
|
||||
view.setUint32(offset + 16, tx.sigops, false);
|
||||
view.setFloat64(offset + 20, (tx.adjustedFeePerVsize || tx.feePerVsize), false);
|
||||
view.setFloat64(offset + 28, (tx.effectiveFeePerVsize || tx.adjustedFeePerVsize || tx.feePerVsize), false);
|
||||
view.setUint32(offset + 36, inputs[tx.uid].length, false);
|
||||
offset += 40;
|
||||
for (const input of inputs[tx.uid]) {
|
||||
view.setUint32(offset, input, false);
|
||||
offset += 4;
|
||||
}
|
||||
}
|
||||
}
|
||||
return buf;
|
||||
}
|
||||
}
|
||||
|
||||
export default new MempoolBlocks();
|
||||
|
||||
@ -342,7 +342,7 @@ class WebsocketHandler {
|
||||
this.printLogs();
|
||||
|
||||
if (config.MEMPOOL.ADVANCED_GBT_MEMPOOL) {
|
||||
await mempoolBlocks.$updateBlockTemplates(newMempool, newTransactions, deletedTransactions, true);
|
||||
await mempoolBlocks.$rustUpdateBlockTemplates(newMempool, newTransactions, deletedTransactions, true);
|
||||
} else {
|
||||
mempoolBlocks.updateMempoolBlocks(newMempool, true);
|
||||
}
|
||||
@ -588,7 +588,7 @@ class WebsocketHandler {
|
||||
if (separateAudit) {
|
||||
auditMempool = deepClone(_memPool);
|
||||
if (config.MEMPOOL.ADVANCED_GBT_AUDIT) {
|
||||
projectedBlocks = await mempoolBlocks.$makeBlockTemplates(auditMempool, false);
|
||||
projectedBlocks = await mempoolBlocks.$rustMakeBlockTemplates(auditMempool, false);
|
||||
} else {
|
||||
projectedBlocks = mempoolBlocks.updateMempoolBlocks(auditMempool, false);
|
||||
}
|
||||
@ -655,7 +655,7 @@ class WebsocketHandler {
|
||||
}
|
||||
|
||||
if (config.MEMPOOL.ADVANCED_GBT_MEMPOOL) {
|
||||
await mempoolBlocks.$makeBlockTemplates(_memPool, true);
|
||||
await mempoolBlocks.$rustMakeBlockTemplates(_memPool, true);
|
||||
} else {
|
||||
mempoolBlocks.updateMempoolBlocks(_memPool, true);
|
||||
}
|
||||
|
||||
@ -127,7 +127,7 @@ export interface CompactThreadTransaction {
|
||||
feePerVsize: number;
|
||||
effectiveFeePerVsize?: number;
|
||||
inputs: number[];
|
||||
cpfpRoot?: string;
|
||||
cpfpRoot?: number;
|
||||
cpfpChecked?: boolean;
|
||||
dirty?: boolean;
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user