kenshin-samourai
4 years ago
8 changed files with 443 additions and 127 deletions
@ -1,50 +0,0 @@ |
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/*! |
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* tracker/abstract-processor.js |
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* Copyright © 2019 – Katana Cryptographic Ltd. All Rights Reserved. |
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*/ |
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'use strict' |
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const RpcClient = require('../lib/bitcoind-rpc/rpc-client') |
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/** |
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* An abstract class for tracker processors |
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*/ |
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class AbstractProcessor { |
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/** |
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* Constructor |
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* @param {object} notifSock - ZMQ socket used for notifications |
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*/ |
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constructor(notifSock) { |
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// RPC client
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this.client = new RpcClient() |
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// ZeroMQ socket for notifications sent to others components
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this.notifSock = notifSock |
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} |
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/** |
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* Notify a new transaction |
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* @param {object} tx - bitcoin transaction |
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*/ |
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notifyTx(tx) { |
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// Real-time client updates for this transaction.
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// Any address input or output present in transaction
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// is a potential client to notify.
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if (this.notifSock) |
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this.notifSock.send(['transaction', JSON.stringify(tx)]) |
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} |
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/** |
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* Notify a new block |
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* @param {string} header - block header |
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*/ |
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notifyBlock(header) { |
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// Notify clients of the block
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if (this.notifSock) |
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this.notifSock.send(['block', JSON.stringify(header)]) |
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} |
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} |
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module.exports = AbstractProcessor |
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@ -0,0 +1,173 @@ |
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/*! |
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* tracker/block-worker.js |
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* Copyright © 2019 – Katana Cryptographic Ltd. All Rights Reserved. |
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*/ |
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'use strict' |
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const { isMainThread, parentPort } = require('worker_threads') |
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const network = require('../lib/bitcoin/network') |
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const keys = require('../keys')[network.key] |
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const db = require('../lib/db/mysql-db-wrapper') |
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const RpcClient = require('../lib/bitcoind-rpc/rpc-client') |
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const Block = require('./block') |
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/** |
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* STATUS |
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*/ |
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const IDLE = 0 |
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module.exports.IDLE = IDLE |
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const INITIALIZED = 1 |
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module.exports.INITIALIZED = INITIALIZED |
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const OUTPUTS_PROCESSED = 2 |
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module.exports.OUTPUTS_PROCESSED = OUTPUTS_PROCESSED |
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const INPUTS_PROCESSED = 3 |
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module.exports.INPUTS_PROCESSED = INPUTS_PROCESSED |
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const TXS_CONFIRMED = 4 |
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module.exports.TXS_CONFIRMED = TXS_CONFIRMED |
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/** |
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* OPS |
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*/ |
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const OP_INIT = 0 |
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module.exports.OP_INIT = OP_INIT |
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const OP_PROCESS_OUTPUTS = 1 |
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module.exports.OP_PROCESS_OUTPUTS = OP_PROCESS_OUTPUTS |
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const OP_PROCESS_INPUTS = 2 |
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module.exports.OP_PROCESS_INPUTS = OP_PROCESS_INPUTS |
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const OP_CONFIRM = 3 |
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module.exports.OP_CONFIRM = OP_CONFIRM |
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const OP_RESET = 4 |
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module.exports.OP_RESET = OP_RESET |
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/** |
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* Process message received by the worker |
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* @param {object} msg - message received by the worker |
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*/ |
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async function processMessage(msg) { |
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let res = null |
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let success = true |
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try { |
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switch(msg.op) { |
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case OP_INIT: |
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if (status != IDLE) |
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throw 'Operation not allowed' |
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res = await initBlock(msg.header) |
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break |
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case OP_PROCESS_OUTPUTS: |
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if (status != INITIALIZED) |
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throw 'Operation not allowed' |
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res = await processOutputs() |
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break |
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case OP_PROCESS_INPUTS: |
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if (status != OUTPUTS_PROCESSED) |
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throw 'Operation not allowed' |
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res = await processInputs() |
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break |
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case OP_CONFIRM: |
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if (status != INPUTS_PROCESSED) |
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throw 'Operation not allowed' |
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res = await confirmTransactions(msg.blockId) |
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break |
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case OP_RESET: |
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res = await reset() |
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break |
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default: |
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throw 'Invalid Operation' |
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} |
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} catch (e) { |
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success = false |
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res = e |
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} finally { |
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parentPort.postMessage({ |
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'op': msg.op, |
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'status': success, |
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'res': res |
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}) |
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} |
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} |
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/** |
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* Initialize the block |
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* @param {object} header - block header |
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*/ |
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async function initBlock(header) { |
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status = INITIALIZED |
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const hex = await rpcClient.getblock(header.hash, false) |
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block = new Block(hex, header) |
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return true |
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} |
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/** |
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* Process the transactions outputs |
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*/ |
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async function processOutputs() { |
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status = OUTPUTS_PROCESSED |
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txsForBroadcast = await block.processOutputs() |
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return true |
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} |
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/** |
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* Process the transactions inputs |
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*/ |
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async function processInputs() { |
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status = INPUTS_PROCESSED |
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const txs = await block.processInputs() |
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txsForBroadcast = txsForBroadcast.concat(txs) |
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return true |
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} |
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/** |
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* Confirm the transactions |
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* @param {integer} blockId - id of the block in db |
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*/ |
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async function confirmTransactions(blockId) { |
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status = TXS_CONFIRMED |
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const aTxsForBroadcast = [...new Set(txsForBroadcast)] |
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await block.confirmTransactions(aTxsForBroadcast, blockId) |
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return aTxsForBroadcast |
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} |
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/** |
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* Reset |
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*/ |
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function reset() { |
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status = IDLE |
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block = null |
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txsForBroadcast = [] |
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return true |
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} |
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/** |
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* MAIN |
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*/ |
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const rpcClient = new RpcClient() |
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let block = null |
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let txsForBroadcast = [] |
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let status = IDLE |
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if (!isMainThread) { |
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db.connect({ |
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connectionLimit: keys.db.connectionLimitTracker, |
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acquireTimeout: keys.db.acquireTimeout, |
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host: keys.db.host, |
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user: keys.db.user, |
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password: keys.db.pass, |
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database: keys.db.database |
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}) |
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reset() |
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parentPort.on('message', processMessage) |
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} |
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@ -0,0 +1,222 @@ |
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/*! |
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* tracker/blocks-processor.js |
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* Copyright © 2019 – Katana Cryptographic Ltd. All Rights Reserved. |
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*/ |
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'use strict' |
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const os = require('os') |
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const Sema = require('async-sema') |
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const { Worker } = require('worker_threads') |
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const Logger = require('../lib/logger') |
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const util = require('../lib/util') |
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const dbProcessor = require('../lib/db/mysql-db-wrapper') |
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const blockWorker = require('./block-worker') |
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let notifSock = null |
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let blockWorkers = [] |
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let headersChunk = [] |
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let txsForBroadcast = [] |
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let t0 = null |
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let currentOp = null |
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let nbTasksEnqueued = 0 |
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let nbTasksCompleted = 0 |
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// Semaphor protecting the processBloks() method
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const _processBlocksSemaphor = new Sema(1) |
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// Number of worker threads processing the blocks in parallel
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const nbWorkers = os.cpus().length //- 1
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module.exports.nbWorkers = nbWorkers |
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/** |
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* Initialize the processor |
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* @param {object} notifSock - ZMQ socket used for notifications |
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*/ |
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function init(notifSock) { |
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notifSock = notifSock |
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for (let i = 0; i < nbWorkers; i++) { |
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const worker = new Worker( |
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`${__dirname}/block-worker.js`, |
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{ workerData: null } |
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) |
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worker.on('error', processWorkerError) |
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worker.on('message', processWorkerMessage) |
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blockWorkers.push(worker) |
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} |
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} |
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module.exports.init = init |
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/** |
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* Process a chunk of block headers |
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* @param {object[]} chunk - array of block headers |
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*/ |
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async function processChunk(chunk) { |
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// Acquire the semaphor (wait for previous chunk)
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await _processBlocksSemaphor.acquire() |
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t0 = Date.now() |
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const sBlockRange = `${chunk[0].height}-${chunk[chunk.length-1].height}` |
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Logger.info(`Tracker : Beginning to process blocks ${sBlockRange}`) |
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// Process the chunk
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chunk.sort((a,b) => a.height - b.height) |
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headersChunk = chunk |
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txsForBroadcast = [] |
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processTask(blockWorker.OP_INIT) |
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} |
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module.exports.processChunk = processChunk |
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/** |
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* Process an error returned by a worker thread |
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* @param {object} e - error |
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*/ |
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async function processWorkerError(e) { |
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return processWorkerMessage({ |
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'op': currentOp, |
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'status': false, |
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'res': e |
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}) |
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} |
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/** |
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* Process a message returned by a worker thread |
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* @param {object} msg - message sent by the worker thread |
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*/ |
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async function processWorkerMessage(msg) { |
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nbTasksCompleted++ |
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if (!msg.status) { |
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Logger.error(msg.res, 'Tracker : processWorkerMessage()') |
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} else if (msg.op == blockWorker.OP_CONFIRM) { |
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txsForBroadcast = txsForBroadcast.concat(msg.res) |
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} |
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if (nbTasksCompleted == nbTasksEnqueued) { |
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switch (msg.op) { |
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case blockWorker.OP_INIT: |
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// Process the transaction outputs
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processTask(blockWorker.OP_PROCESS_OUTPUTS) |
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break |
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case blockWorker.OP_PROCESS_OUTPUTS: |
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// Process the transaction inputs
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processTask(blockWorker.OP_PROCESS_INPUTS) |
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break |
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case blockWorker.OP_PROCESS_INPUTS: |
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// Store the blocks in db and get their id
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const blockIds = await util.seriesCall(headersChunk, async header => { |
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return registerBlock(header) |
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}) |
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// Confirm the transactions
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processTask(blockWorker.OP_CONFIRM, blockIds) |
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break |
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case blockWorker.OP_CONFIRM: |
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// Notify new transactions and blocks
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await Promise.all([ |
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util.parallelCall(txsForBroadcast, async tx => { |
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notifyTx(tx) |
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}), |
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util.parallelCall(headersChunk, async header => { |
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notifyBlock(header) |
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}) |
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]) |
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// Process complete. Reset the workers
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processTask(blockWorker.OP_RESET) |
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break |
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case blockWorker.OP_RESET: |
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const dt = ((Date.now()-t0)/1000).toFixed(1) |
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const per = ((Date.now()-t0)/headersChunk.length).toFixed(0) |
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const sBlockRange = `${headersChunk[0].height}-${headersChunk[headersChunk.length-1].height}` |
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Logger.info(`Tracker : Finished processing blocks ${sBlockRange}, ${dt}s, ${per}ms/block`) |
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// Release the semaphor
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await _processBlocksSemaphor.release() |
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break |
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} |
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} |
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} |
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/** |
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* Execute an operation processing a block |
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* @param {integer} op - operation |
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* @param {*} args |
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*/ |
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function processTask(op, args) { |
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currentOp = op |
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nbTasksEnqueued = 0 |
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nbTasksCompleted = 0 |
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switch (op) { |
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case blockWorker.OP_INIT: |
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for (let i = 0; i < headersChunk.length; i++) { |
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blockWorkers[i].postMessage({ |
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'op': op, |
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'header': headersChunk[i] |
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}) |
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nbTasksEnqueued++ |
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} |
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break |
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case blockWorker.OP_PROCESS_OUTPUTS: |
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case blockWorker.OP_PROCESS_INPUTS: |
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case blockWorker.OP_RESET: |
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for (let i = 0; i < headersChunk.length; i++) { |
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blockWorkers[i].postMessage({'op': op}) |
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nbTasksEnqueued++ |
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} |
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break |
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case blockWorker.OP_CONFIRM: |
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for (let i = 0; i < headersChunk.length; i++) { |
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blockWorkers[i].postMessage({ |
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'op': op, |
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'blockId': args[i] |
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}) |
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nbTasksEnqueued++ |
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} |
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break |
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default: |
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Logger.error(null, 'Tracker : processTask() : Unknown operation') |
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} |
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} |
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/** |
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* Notify a new transaction |
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* @param {object} tx - bitcoin transaction |
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*/ |
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function notifyTx(tx) { |
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// Real-time client updates for this transaction.
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// Any address input or output present in transaction
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// is a potential client to notify.
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if (notifSock) |
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notifSock.send(['transaction', JSON.stringify(tx)]) |
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} |
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/** |
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* Notify a new block |
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* @param {string} header - block header |
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*/ |
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function notifyBlock(header) { |
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// Notify clients of the block
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if (notifSock) |
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notifSock.send(['block', JSON.stringify(header)]) |
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} |
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/** |
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* Store a block in db |
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* @param {object} header - block header |
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* @returns {Promise - int} returns the id of the block |
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*/ |
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async function registerBlock(header) { |
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const prevBlock = await dbProcessor.getBlockByHash(header.previousblockhash) |
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const prevID = (prevBlock && prevBlock.blockID) ? prevBlock.blockID : null |
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const blockId = await dbProcessor.addBlock({ |
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blockHeight: header.height, |
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blockHash: header.hash, |
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blockTime: header.time, |
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blockParent: prevID |
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}) |
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Logger.info(`Tracker : Added block ${header.height} (id=${blockId})`) |
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return blockId |
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} |
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