813 lines
17 KiB
JavaScript
813 lines
17 KiB
JavaScript
'use strict';
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require('./utils/logger.js');
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var os = require('os');
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var web3 = require('web3');
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var async = require('async');
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var _ = require('lodash');
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var shelljs = require('shelljs');
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var debounce = require('debounce');
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var registrar = require('./registrar.js');
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var pjson = require('./../package.json');
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var chalk = require('chalk');
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var Primus = require('primus'),
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Emitter = require('primus-emit'),
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Latency = require('primus-spark-latency'),
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Socket, socket;
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var ETH_VERSION,
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NET_VERSION,
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PROTOCOL_VERSION,
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API_VERSION,
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COINBASE;
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var INSTANCE_NAME = process.env.INSTANCE_NAME;
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var WS_SECRET = process.env.WS_SECRET || "eth-net-stats-has-a-secret";
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var PENDING_WORKS = true;
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var MAX_BLOCKS_HISTORY = 40;
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var UPDATE_INTERVAL = 5000;
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var PING_INTERVAL = 3000;
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var MINERS_LIMIT = 5;
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var MAX_HISTORY_UPDATE = 50;
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var MAX_CONNECTION_ATTEMPTS = 15;
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var CONNECTION_ATTEMPTS_TIMEOUT = 1000;
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Socket = Primus.createSocket({
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transformer: 'websockets',
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pathname: '/api',
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timeout: 120000,
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strategy: 'disconnect,online,timeout',
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reconnect: {
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retries: 30
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},
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plugin: {emitter: Emitter, sparkLatency: Latency}
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});
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if(process.env.NODE_ENV === 'production' && INSTANCE_NAME === "")
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{
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INSTANCE_NAME = shelljs.exec('ec2metadata --instance-id 2>/dev/null', {silent: true}).output;
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}
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console.log('');
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console.info('NET STATS CLIENT');
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console.success('v' + pjson.version);
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console.log('');
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console.log('');
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function Node ()
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{
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this.info = {
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name: INSTANCE_NAME || (process.env.EC2_INSTANCE_ID || os.hostname()),
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contact: (process.env.CONTACT_DETAILS || ""),
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coinbase: null,
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node: null,
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net: null,
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protocol: null,
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api: null,
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port: (process.env.LISTENING_PORT || 30303),
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os: os.platform(),
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os_v: os.release(),
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client: pjson.version,
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canUpdateHistory: true,
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};
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this.id = _.camelCase(this.info.name);
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this.stats = {
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active: false,
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mining: false,
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hashrate: 0,
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peers: 0,
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pending: 0,
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gasPrice: 0,
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block: {
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number: 0,
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hash: '?',
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difficulty: 0,
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totalDifficulty: 0,
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transactions: [],
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uncles: []
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},
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uptime: 0
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};
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this._lastBlock = 0;
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this._lastStats = JSON.stringify(this.stats);
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this._lastFetch = 0;
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this._lastPending = 0;
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this._tries = 0;
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this._down = 0;
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this._lastSent = 0;
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this._latency = 0;
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this._web3 = false;
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this._socket = false;
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this._latestQueue = null;
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this.pendingFilter = false;
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this.chainFilter = false;
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this.updateInterval = false;
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this.pingInterval = false;
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this.connectionInterval = false;
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this._lastChainLog = 0;
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this._lastPendingLog = 0;
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this._chainDebouncer = 0;
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this._connection_attempts = 0
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this._timeOffset = null;
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this.startWeb3Connection();
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return this;
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}
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Node.prototype.startWeb3Connection = function()
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{
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console.info('Starting web3 connection');
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web3.setProvider( new web3.providers.HttpProvider('http://' + (process.env.RPC_HOST || 'localhost') + ':' + (process.env.RPC_PORT || '8545')) );
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this.checkWeb3Connection();
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}
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Node.prototype.checkWeb3Connection = function()
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{
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var self = this;
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if (!this._web3)
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{
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try {
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var tmp = web3.version.client;
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if( !_.isUndefined(tmp) )
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{
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console.log(' ', tmp);
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console.success('Web3 connection established');
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this._web3 = true;
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this.init();
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return true;
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}
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}
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catch (err)
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{
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if(this._connection_attempts < MAX_CONNECTION_ATTEMPTS)
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{
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console.error('Web3 connection attempt', chalk.cyan('#' + this._connection_attempts++), 'failed');
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console.error('Trying again in', chalk.cyan(500 * this._connection_attempts + ' ms'));
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setTimeout(function ()
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{
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self.checkWeb3Connection();
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}, CONNECTION_ATTEMPTS_TIMEOUT * this._connection_attempts);
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}
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else
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{
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console.error('Web3 connection failed', chalk.cyan(MAX_CONNECTION_ATTEMPTS), 'times. Aborting...');
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}
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}
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}
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}
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Node.prototype.reconnectWeb3 = function()
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{
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this._web3 = false;
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if(this.updateInterval)
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clearInterval(this.updateInterval);
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if(this.pingInterval)
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clearInterval(this.pingInterval);
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try
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{
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web3.reset();
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}
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catch (err)
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{
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console.error("Web3 reset error:", err);
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}
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this.checkWeb3Connection();
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}
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Node.prototype.startSocketConnection = function()
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{
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if( !this._socket )
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{
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console.info('wsc', 'Starting socket connection');
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socket = new Socket( process.env.WS_SERVER || 'ws://localhost:3000' );
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this.setupSockets();
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}
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}
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Node.prototype.setupSockets = function()
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{
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var self = this;
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// Setup events
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socket.on('open', function open()
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{
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console.info('wsc', 'The socket connection has been opened.');
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console.log(' ', 'Trying to login');
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socket.emit('hello', {
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id: self.id,
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info: self.info,
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secret: WS_SECRET
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});
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})
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.on('ready', function()
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{
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self._socket = true;
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console.success('wsc', 'The socket connection has been established.');
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self.getLatestBlock();
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self.getPending();
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self.getStats(true);
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})
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.on('data', function incoming(data)
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{
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console.info('Socket received some data', data);
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})
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.on('history', function (data)
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{
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console.info('his', 'Got history request');
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self.getHistory( data );
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})
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.on('node-pong', function(data)
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{
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var now = _.now();
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var latency = Math.ceil( (now - data.clientTime) / 2 );
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socket.emit('latency', {
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id: self.id,
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latency: latency
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});
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})
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.on('end', function end()
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{
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self._socket = false;
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console.error('wsc', 'Socket connection end received');
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})
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.on('error', function error(err)
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{
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console.error('wsc', 'Socket error:', err);
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})
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.on('timeout', function ()
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{
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self._socket = false;
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console.error('wsc', 'Socket connection timeout');
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})
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.on('close', function ()
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{
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self._socket = false;
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console.error('wsc', 'Socket connection has been closed');
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})
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.on('offline', function ()
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{
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self._socket = false;
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console.error('wsc', 'Network connection is offline');
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})
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.on('online', function ()
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{
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self._socket = true;
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console.info('wsc', 'Network connection is online');
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})
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.on('reconnect', function ()
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{
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console.info('wsc', 'Socket reconnect attempt started');
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})
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.on('reconnect scheduled', function (opts)
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{
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self._socket = false;
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console.warn('wsc', 'Reconnecting in', opts.scheduled, 'ms');
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console.warn('wsc', 'This is attempt', opts.attempt, 'out of', opts.retries);
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})
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.on('reconnected', function (opts)
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{
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self._socket = true;
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console.success('wsc', 'Socket reconnected successfully after', opts.duration, 'ms');
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})
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.on('reconnect timeout', function (err, opts)
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{
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self._socket = false;
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console.error('wsc', 'Socket reconnect atempt took too long:', err.message);
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})
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.on('reconnect failed', function (err, opts)
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{
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self._socket = false;
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console.error('wsc', 'Socket reconnect failed:', err.message);
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});
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}
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Node.prototype.emit = function(message, payload)
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{
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if(this._socket)
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{
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try {
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socket.emit(message, payload);
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console.success('wsc', 'Socket emited message:', chalk.reset.cyan(message));
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// console.success('wsc', payload);
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}
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catch (err) {
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console.error('wsc', 'Socket emit error:', err);
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}
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}
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}
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Node.prototype.getInfo = function()
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{
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console.info('==>', 'Getting info');
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console.time('Got info');
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try {
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this.info.coinbase = web3.eth.coinbase;
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this.info.node = web3.version.client;
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this.info.net = web3.version.network;
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this.info.protocol = web3.toDecimal(web3.version.ethereum);
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this.info.api = web3.version.api;
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console.timeEnd('Got info');
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console.info(this.info);
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return true;
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}
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catch (err) {
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console.error("Couldn't get version");
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}
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return false;
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}
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Node.prototype.setInactive = function()
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{
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this.stats.active = false;
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this.stats.peers = 0;
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this.stats.mining = false;
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this.stats.hashrate = 0;
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this._down++;
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this.setUptime();
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this.sendStatsUpdate(true);
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// Schedule web3 reconnect
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this.reconnectWeb3();
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return this;
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}
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Node.prototype.setUptime = function()
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{
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this.stats.uptime = ((this._tries - this._down) / this._tries) * 100;
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}
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Node.prototype.formatBlock = function (block)
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{
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if( !_.isNull(block) && !_.isUndefined(block) && !_.isUndefined(block.number) && block.number >= 0 && !_.isUndefined(block.difficulty) && !_.isUndefined(block.totalDifficulty) )
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{
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block.difficulty = block.difficulty.toString(10);
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block.totalDifficulty = block.totalDifficulty.toString(10);
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if( !_.isUndefined(block.logsBloom) )
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{
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delete block.logsBloom;
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}
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return block;
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}
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return false;
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}
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Node.prototype.getLatestBlock = function ()
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{
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var self = this;
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if(this._web3)
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{
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var timeString = 'Got block in' + chalk.reset.red('');
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console.time('==>', timeString);
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web3.eth.getBlock('latest', false, function(error, result) {
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self.validateLatestBlock(error, result, timeString);
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});
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}
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}
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Node.prototype.validateLatestBlock = function (error, result, timeString)
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{
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console.timeEnd('==>', timeString);
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if( error )
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{
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console.error("xx>", "getLatestBlock couldn't fetch block...");
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console.error("xx>", error);
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return false;
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}
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var block = this.formatBlock(result);
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if(block === false)
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{
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console.error("xx>", "Got bad block:", chalk.reset.cyan(result));
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return false;
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}
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if( this.stats.block.number === block.number )
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{
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console.warn("==>", "Got same block:", chalk.reset.cyan(block.number));
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if( _.isEqual(JSON.stringify(this.stats.block), JSON.stringify(block)) )
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return false;
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console.info(this.stats.block);
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console.info(block);
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console.warn("Blocks are different... updating block");
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}
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console.success("==>", "Got block:", chalk.reset.red(block.number));
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this.stats.block = block;
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this.sendBlockUpdate();
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if(this.stats.block.number - this._lastBlock > 1)
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{
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var range = _.range( Math.max(this.stats.block.number - MAX_BLOCKS_HISTORY, this._lastBlock + 1), Math.max(this.stats.block.number, 0), 1 );
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if( this._latestQueue.idle() )
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this.getHistory({ list: range });
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}
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if(this.stats.block.number > this._lastBlock)
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{
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this._lastBlock = this.stats.block.number;
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}
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}
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Node.prototype.getStats = function(forced)
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{
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var self = this;
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var now = _.now();
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var lastFetchAgo = now - this._lastFetch;
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this._lastFetch = now;
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if (this._socket)
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this._lastStats = JSON.stringify(this.stats);
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if (this._web3 && (lastFetchAgo >= UPDATE_INTERVAL || forced === true))
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{
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console.info('==>', 'Getting stats')
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console.log(' ', 'last update:', chalk.reset.cyan(lastFetchAgo));
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console.log(' ', 'forced:', chalk.reset.cyan(forced === true));
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async.parallel({
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peers: function (callback)
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{
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web3.net.getPeerCount(callback);
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},
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mining: function (callback)
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{
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web3.eth.getMining(callback);
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},
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hashrate: function (callback)
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{
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web3.eth.getHashrate(callback);
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},
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gasPrice: function (callback)
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{
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web3.eth.getGasPrice(callback);
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}
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},
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function (err, results)
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{
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self._tries++;
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if (err) {
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console.error('xx>', 'getStats error: ', err);
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self.setInactive();
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return false;
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}
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results.end = _.now();
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results.diff = results.end - self._lastFetch;
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console.success('==>', 'Got getStats results in', chalk.reset.cyan(results.diff, 'ms'));
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if(results.peers !== null)
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{
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self.stats.active = true;
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self.stats.peers = results.peers;
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self.stats.mining = results.mining;
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self.stats.hashrate = results.hashrate;
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self.stats.gasPrice = results.gasPrice.toString(10);
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}
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else {
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self.setInactive();
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}
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self.setUptime();
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self.sendStatsUpdate(forced);
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});
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}
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}
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Node.prototype.getPending = function()
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{
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var self = this;
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var now = _.now();
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if (this._web3)
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{
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console.info('==>', 'Getting Pending')
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web3.eth.getBlockTransactionCount('pending', function (err, pending)
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{
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if (err) {
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console.error('xx>', 'getPending error: ', err);
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return false;
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}
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var results = {};
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results.end = _.now();
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results.diff = results.end - now;
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console.success('==>', 'Got', chalk.reset.red(pending) , chalk.reset.bold.green('pending tx'+ (pending === 1 ? '' : 's') + ' in'), chalk.reset.cyan(results.diff, 'ms'));
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self.stats.pending = pending;
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if(self._lastPending !== pending)
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self.sendPendingUpdate();
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self._lastPending = pending;
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});
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}
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}
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Node.prototype.getHistory = function (range)
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{
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var self = this;
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var history = [];
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var interv = {};
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console.time('=H=', 'his', 'Got history in');
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if ( _.isUndefined(range) || range === null)
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interv = _.range(this.stats.block.number - 1, this.stats.block.number - MAX_HISTORY_UPDATE);
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if (!_.isUndefined(range.list))
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interv = range.list;
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console.info('his', 'Getting history from', chalk.reset.cyan(interv[0]), 'to', chalk.reset.cyan(interv[interv.length - 1]));
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async.mapSeries(interv, function (number, callback)
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{
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web3.eth.getBlock(number, false, callback);
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},
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function (err, results)
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{
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if (err) {
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console.error('his', 'history fetch failed:', err);
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results = false;
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}
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else
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{
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for(var i=0; i < results.length; i++)
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|
{
|
|
results[i] = self.formatBlock(results[i]);
|
|
}
|
|
}
|
|
|
|
self.emit('history', {
|
|
id: self.id,
|
|
history: results.reverse()
|
|
});
|
|
|
|
console.timeEnd('=H=', 'his', 'Got history in');
|
|
});
|
|
}
|
|
|
|
Node.prototype.changed = function ()
|
|
{
|
|
var changed = ! _.isEqual( this._lastStats, JSON.stringify(this.stats) );
|
|
|
|
return changed;
|
|
}
|
|
|
|
Node.prototype.prepareBlock = function ()
|
|
{
|
|
return {
|
|
id: this.id,
|
|
block: this.stats.block
|
|
};
|
|
}
|
|
|
|
Node.prototype.preparePending = function ()
|
|
{
|
|
return {
|
|
id: this.id,
|
|
stats: {
|
|
pending: this.stats.pending
|
|
}
|
|
};
|
|
}
|
|
|
|
Node.prototype.prepareStats = function ()
|
|
{
|
|
return {
|
|
id: this.id,
|
|
stats: {
|
|
active: this.stats.active,
|
|
mining: this.stats.mining,
|
|
hashrate: this.stats.hashrate,
|
|
peers: this.stats.peers,
|
|
gasPrice: this.stats.gasPrice,
|
|
uptime: this.stats.uptime
|
|
}
|
|
};
|
|
}
|
|
|
|
Node.prototype.sendBlockUpdate = function()
|
|
{
|
|
console.info("wsc", "Sending", chalk.reset.red("block"), chalk.bold.white("update"));
|
|
this.emit('block', this.prepareBlock());
|
|
}
|
|
|
|
Node.prototype.sendPendingUpdate = function()
|
|
{
|
|
console.info("wsc", "Sending pending update");
|
|
this.emit('pending', this.preparePending());
|
|
}
|
|
|
|
Node.prototype.sendStatsUpdate = function (force)
|
|
{
|
|
if( this.changed() || force ) {
|
|
console.info("wsc", "Sending", chalk.reset.blue((force ? "forced" : "changed")), chalk.bold.white("update"));
|
|
this.emit('stats', this.prepareStats());
|
|
}
|
|
}
|
|
|
|
Node.prototype.ping = function()
|
|
{
|
|
this._latency = _.now();
|
|
socket.emit('node-ping', {
|
|
id: this.id,
|
|
clientTime: _.now()
|
|
});
|
|
};
|
|
|
|
Node.prototype.setWatches = function()
|
|
{
|
|
var self = this;
|
|
|
|
this._latestQueue = async.queue(function (hash, callback)
|
|
{
|
|
var timeString = 'Got block ' + chalk.reset.red(hash) + chalk.reset.bold.white(' in') + chalk.reset.green('');
|
|
|
|
console.time('==>', timeString);
|
|
|
|
web3.eth.getBlock(hash, false, function (error, result)
|
|
{
|
|
self.validateLatestBlock(error, result, timeString);
|
|
|
|
callback();
|
|
});
|
|
}, 1);
|
|
|
|
this._latestQueue.drain = function()
|
|
{
|
|
console.success("Finished processing", 'latest', 'queue');
|
|
|
|
self.getPending();
|
|
}
|
|
|
|
try {
|
|
this.chainFilter = web3.eth.filter('latest');
|
|
this.chainFilter.watch( function (err, hash)
|
|
{
|
|
var now = _.now();
|
|
var time = now - self._lastChainLog;
|
|
self._lastChainLog = now;
|
|
|
|
if(hash === null)
|
|
{
|
|
hash = web3.eth.blockNumber;
|
|
}
|
|
|
|
console.info('>>>', 'Chain Filter triggered: ', chalk.reset.red(hash), '- last trigger:', chalk.reset.cyan(time));
|
|
|
|
if(time < 5)
|
|
{
|
|
self._chainDebouncer++;
|
|
} else {
|
|
self._chainDebouncer = 0;
|
|
}
|
|
|
|
if(self._chainDebouncer < 20)
|
|
{
|
|
self._latestQueue.push(hash);
|
|
}
|
|
else
|
|
{
|
|
debounce(function() {
|
|
self._latestQueue.push(hash);
|
|
self._chainDebouncer = 0;
|
|
}, 5);
|
|
}
|
|
});
|
|
|
|
console.success("Installed chain filter");
|
|
}
|
|
catch (err)
|
|
{
|
|
this.chainFilter = false;
|
|
|
|
console.error("Couldn't set up chain filter");
|
|
console.error(err);
|
|
}
|
|
|
|
try {
|
|
this.pendingFilter = web3.eth.filter('pending');
|
|
this.pendingFilter.watch( function (err, hash)
|
|
{
|
|
var now = _.now();
|
|
var time = now - self._lastPendingLog;
|
|
self._lastPendingLog = now;
|
|
|
|
console.info('>>>', 'Pending Filter triggered:', chalk.reset.red(hash), '- last trigger:', chalk.reset.cyan(time));
|
|
|
|
if(time > 50)
|
|
{
|
|
self.getPending();
|
|
}
|
|
else
|
|
{
|
|
debounce(function() {
|
|
self.getPending();
|
|
}, 5);
|
|
}
|
|
});
|
|
|
|
console.success("Installed pending filter");
|
|
}
|
|
catch (err)
|
|
{
|
|
this.pendingFilter = false;
|
|
|
|
console.error("Couldn't set up pending filter");
|
|
console.error(err);
|
|
}
|
|
|
|
this.updateInterval = setInterval( function(){
|
|
self.getStats();
|
|
}, UPDATE_INTERVAL);
|
|
|
|
this.pingInterval = setInterval( function(){
|
|
self.ping();
|
|
}, PING_INTERVAL);
|
|
}
|
|
|
|
Node.prototype.init = function()
|
|
{
|
|
// Fetch node info
|
|
this.getInfo();
|
|
|
|
// Start socket connection
|
|
this.startSocketConnection();
|
|
|
|
// Set filters
|
|
this.setWatches();
|
|
}
|
|
|
|
Node.prototype.stop = function()
|
|
{
|
|
if(this._socket)
|
|
socket.end();
|
|
|
|
if(this.updateInterval)
|
|
clearInterval(this.updateInterval);
|
|
|
|
if(this.pingInterval)
|
|
clearInterval(this.pingInterval);
|
|
|
|
web3.reset();
|
|
}
|
|
|
|
module.exports = Node;
|