432 lines
16 KiB
JavaScript
432 lines
16 KiB
JavaScript
const async = require('async');
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const {spawn, exec} = require('child_process');
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const fs = require('../../core/fs.js');
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const constants = require('../../constants.json');
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const utils = require('../../utils/utils.js');
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const GethClient = require('./gethClient.js');
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const ParityClient = require('./parityClient.js');
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const DevFunds = require('./dev_funds.js');
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const proxy = require('./proxy');
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const Ipc = require('../../core/ipc');
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const {defaultHost, dockerHostSwap} = require('../../utils/host');
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/*eslint complexity: ["error", 36]*/
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var Blockchain = function(userConfig, clientClass) {
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this.userConfig = userConfig;
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this.env = userConfig.env || 'development';
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this.isDev = userConfig.isDev;
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this.onReadyCallback = userConfig.onReadyCallback || (() => {});
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this.onExitCallback = userConfig.onExitCallback;
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this.proxyIpc = null;
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let defaultWsApi = clientClass.DEFAULTS.WS_API;
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if (this.isDev) defaultWsApi = clientClass.DEFAULTS.DEV_WS_API;
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this.config = {
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silent: this.userConfig.silent,
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ethereumClientName: this.userConfig.ethereumClientName,
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ethereumClientBin: this.userConfig.ethereumClientBin || this.userConfig.ethereumClientName || 'geth',
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networkType: this.userConfig.networkType || clientClass.DEFAULTS.NETWORK_TYPE,
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networkId: this.userConfig.networkId || clientClass.DEFAULTS.NETWORK_ID,
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genesisBlock: this.userConfig.genesisBlock || false,
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datadir: this.userConfig.datadir || false,
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mineWhenNeeded: this.userConfig.mineWhenNeeded || false,
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rpcHost: dockerHostSwap(this.userConfig.rpcHost) || defaultHost,
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rpcPort: this.userConfig.rpcPort || 8545,
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rpcCorsDomain: this.userConfig.rpcCorsDomain || false,
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rpcApi: this.userConfig.rpcApi || clientClass.DEFAULTS.RPC_API,
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port: this.userConfig.port || 30303,
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nodiscover: this.userConfig.nodiscover || false,
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mine: this.userConfig.mine || false,
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account: this.userConfig.account || {},
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devPassword: this.userConfig.devPassword || "",
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whisper: (this.userConfig.whisper != false),
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maxpeers: ((this.userConfig.maxpeers === 0) ? 0 : (this.userConfig.maxpeers || 25)),
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bootnodes: this.userConfig.bootnodes || "",
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wsRPC: (this.userConfig.wsRPC != false),
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wsHost: dockerHostSwap(this.userConfig.wsHost) || defaultHost,
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wsPort: this.userConfig.wsPort || 8546,
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wsOrigins: this.userConfig.wsOrigins || false,
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wsApi: this.userConfig.wsApi || defaultWsApi,
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vmdebug: this.userConfig.vmdebug || false,
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targetGasLimit: this.userConfig.targetGasLimit || false,
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syncMode: this.userConfig.syncMode || this.userConfig.syncmode,
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verbosity: this.userConfig.verbosity,
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proxy: this.userConfig.proxy || true
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};
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if (this.userConfig === {} || this.userConfig.default || JSON.stringify(this.userConfig) === '{"enabled":true}') {
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this.config.account = {};
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if (this.env === 'development') {
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this.isDev = true;
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} else {
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this.config.account.password = fs.embarkPath("templates/boilerplate/config/privatenet/password");
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this.config.genesisBlock = fs.embarkPath("templates/boilerplate/config/privatenet/genesis.json");
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}
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this.config.datadir = fs.dappPath(".embark/development/datadir");
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this.config.wsOrigins = "http://localhost:8000";
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this.config.rpcCorsDomain = "http://localhost:8000";
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this.config.targetGasLimit = 8000000;
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}
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const spaceMessage = 'The path for %s in blockchain config contains spaces, please remove them';
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if (this.config.datadir && this.config.datadir.indexOf(' ') > 0) {
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console.error(__(spaceMessage, 'datadir'));
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process.exit();
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}
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if (this.config.account.password && this.config.account.password.indexOf(' ') > 0) {
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console.error(__(spaceMessage, 'account.password'));
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process.exit();
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}
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if (this.config.genesisBlock && this.config.genesisBlock.indexOf(' ') > 0) {
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console.error(__(spaceMessage, 'genesisBlock'));
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process.exit();
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}
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this.initProxy();
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this.client = new clientClass({config: this.config, env: this.env, isDev: this.isDev});
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};
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Blockchain.prototype.initProxy = function() {
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if (this.config.proxy) {
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this.config.rpcPort += constants.blockchain.servicePortOnProxy;
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this.config.wsPort += constants.blockchain.servicePortOnProxy;
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}
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};
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Blockchain.prototype.setupProxy = async function() {
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if (!this.proxyIpc) this.proxyIpc = new Ipc({ipcRole: 'client'});
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let wsProxy;
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if (this.config.wsRPC) {
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wsProxy = proxy.serve(this.proxyIpc, this.config.wsHost, this.config.wsPort, true, this.config.wsOrigins);
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}
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[this.rpcProxy, this.wsProxy] = await Promise.all([proxy.serve(this.proxyIpc, this.config.rpcHost, this.config.rpcPort, false), wsProxy]);
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};
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Blockchain.prototype.shutdownProxy = function() {
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if (!this.config.proxy) {
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return;
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}
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if (this.rpcProxy) this.rpcProxy.close();
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if (this.wsProxy) this.wsProxy.close();
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};
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Blockchain.prototype.runCommand = function(cmd, options, callback) {
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console.log(__("running: %s", cmd.underline).green);
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if (this.config.silent) {
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options.silent = true;
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}
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return exec(cmd, options, callback);
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};
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Blockchain.prototype.run = function() {
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var self = this;
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console.log("===============================================================================".magenta);
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console.log("===============================================================================".magenta);
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console.log(__("Embark Blockchain using %s", self.client.prettyName.underline).magenta);
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console.log("===============================================================================".magenta);
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console.log("===============================================================================".magenta);
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if (self.client.name === 'geth') this.checkPathLength();
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let address = '';
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async.waterfall([
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function checkInstallation(next) {
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self.isClientInstalled((err) => {
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if (err) {
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return next({message: err});
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}
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next();
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});
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},
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function init(next) {
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if (self.isDev) {
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return self.initDevChain((err) => {
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next(err);
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});
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}
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return self.initChainAndGetAddress((err, addr) => {
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address = addr;
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next(err);
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});
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},
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function getMainCommand(next) {
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self.client.mainCommand(address, function(cmd, args) {
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next(null, cmd, args);
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}, true);
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}
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], function(err, cmd, args) {
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if (err) {
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console.error(err.message);
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return;
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}
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args = utils.compact(args);
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let full_cmd = cmd + " " + args.join(' ');
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console.log(__("running: %s", full_cmd.underline).green);
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self.child = spawn(cmd, args, {cwd: process.cwd()});
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self.child.on('error', (err) => {
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err = err.toString();
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console.error('Blockchain error: ', err);
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if (self.env === 'development' && err.indexOf('Failed to unlock') > 0) {
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console.error('\n' + __('Development blockchain has changed to use the --dev option.').yellow);
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console.error(__('You can reset your workspace to fix the problem with').yellow + ' embark reset'.cyan);
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console.error(__('Otherwise, you can change your data directory in blockchain.json (datadir)').yellow);
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}
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});
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// TOCHECK I don't understand why stderr and stdout are reverted.
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// This happens with Geth and Parity, so it does not seems a client problem
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self.child.stdout.on('data', (data) => {
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console.error(`${self.client.name} error: ${data}`);
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});
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self.child.stderr.on('data', async (data) => {
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data = data.toString();
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if (!self.readyCalled && self.client.isReady(data)) {
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self.readyCalled = true;
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if (self.isDev) {
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self.fundAccounts((err) => {
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if (err) console.error('Error funding accounts', err);
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});
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}
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if (self.config.proxy) {
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await self.setupProxy();
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}
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self.readyCallback();
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}
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console.log(`${self.client.name}: ${data}`);
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});
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self.child.on('exit', (code) => {
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let strCode;
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if (code) {
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strCode = 'with error code ' + code;
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} else {
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strCode = 'with no error code (manually killed?)';
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}
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console.error(self.client.name + ' exited ' + strCode);
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if (self.onExitCallback) {
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self.onExitCallback();
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}
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});
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self.child.on('uncaughtException', (err) => {
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console.error('Uncaught ' + self.client.name + ' exception', err);
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if (self.onExitCallback) {
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self.onExitCallback();
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}
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});
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});
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};
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Blockchain.prototype.fundAccounts = function(cb) {
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DevFunds.new({blockchainConfig: this.config}).then(devFunds => {
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devFunds.fundAccounts(this.client.needKeepAlive(), (err) => {
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cb(err);
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});
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});
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};
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Blockchain.prototype.readyCallback = function() {
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if (this.onReadyCallback) {
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this.onReadyCallback();
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}
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if (this.config.mineWhenNeeded && !this.isDev) {
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this.miner = this.client.getMiner();
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}
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};
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Blockchain.prototype.kill = function() {
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this.shutdownProxy();
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if (this.child) {
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this.child.kill();
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}
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};
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Blockchain.prototype.checkPathLength = function() {
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let dappPath = fs.dappPath('');
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if (dappPath.length > 66) {
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// console.error is captured and sent to the console output regardless of silent setting
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console.error("===============================================================================".yellow);
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console.error("===========> ".yellow + __('WARNING! ÐApp path length is too long: ').yellow + dappPath.yellow);
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console.error("===========> ".yellow + __('This is known to cause issues with starting geth, please consider reducing your ÐApp path\'s length to 66 characters or less.').yellow);
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console.error("===============================================================================".yellow);
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}
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};
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Blockchain.prototype.isClientInstalled = function(callback) {
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let versionCmd = this.client.determineVersionCommand();
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this.runCommand(versionCmd, {}, (err, stdout, stderr) => {
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if (err || !stdout || stderr.indexOf("not found") >= 0 || stdout.indexOf("not found") >= 0) {
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return callback(__('Ethereum client bin not found:') + ' ' + this.client.getBinaryPath());
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}
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callback();
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});
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};
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Blockchain.prototype.initDevChain = function(callback) {
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const self = this;
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const ACCOUNTS_ALREADY_PRESENT = 'accounts_already_present';
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// Init the dev chain
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self.client.initDevChain('.embark/development/datadir', (err) => {
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if (err) {
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console.log(err);
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return callback(err);
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}
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let needToCreateOtherAccounts = self.config.account && self.config.account.numAccounts;
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if (!needToCreateOtherAccounts) return callback();
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// Create other accounts
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async.waterfall([
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function listAccounts(next) {
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self.runCommand(self.client.listAccountsCommand(), {}, (err, stdout, _stderr) => {
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if (err || stdout === undefined || stdout.indexOf("Fatal") >= 0) {
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console.log(__("no accounts found").green);
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return next();
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}
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// List current addresses
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self.config.unlockAddressList = self.client.parseListAccountsCommandResultToAddressList(stdout);
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// Count current addresses and remove the default account from the count (because password can be different)
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let addressCount = self.client.parseListAccountsCommandResultToAddressCount(stdout);
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let utilityAddressCount = self.client.parseListAccountsCommandResultToAddressCount(stdout) - 1;
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utilityAddressCount = (utilityAddressCount > 0 ? utilityAddressCount : 0);
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let accountsToCreate = self.config.account.numAccounts - utilityAddressCount;
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if (accountsToCreate > 0) {
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next(null, accountsToCreate, addressCount === 0);
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} else {
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next(ACCOUNTS_ALREADY_PRESENT);
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}
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});
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},
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function newAccounts(accountsToCreate, firstAccount, next) {
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// At first launch, Geth --dev does not create its own dev account if any other account are present. Parity --dev always does. Make this choerent between the two
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if (firstAccount && self.client.name === 'geth') accountsToCreate++;
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var accountNumber = 0;
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async.whilst(
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function() {
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return accountNumber < accountsToCreate;
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},
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function(callback) {
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accountNumber++;
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self.runCommand(self.client.newAccountCommand(firstAccount), {}, (err, stdout, _stderr) => {
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if (err) {
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return callback(err, accountNumber);
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}
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self.config.unlockAddressList.push(self.client.parseNewAccountCommandResultToAddress(stdout));
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firstAccount = false;
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callback(null, accountNumber);
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});
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},
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function(err) {
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next(err);
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}
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);
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}
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], (err) => {
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if (err && err !== ACCOUNTS_ALREADY_PRESENT) {
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console.log(err);
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return callback(err);
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}
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callback();
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});
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});
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};
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Blockchain.prototype.initChainAndGetAddress = function(callback) {
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const self = this;
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let address = null;
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const ALREADY_INITIALIZED = 'already';
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// ensure datadir exists, bypassing the interactive liabilities prompt.
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self.datadir = '.embark/' + self.env + '/datadir';
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async.waterfall([
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function makeDir(next) {
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fs.mkdirp(self.datadir, (err, _result) => {
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next(err);
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});
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},
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function listAccounts(next) {
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self.runCommand(self.client.listAccountsCommand(), {}, (err, stdout, _stderr) => {
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if (err || stdout === undefined || stdout.indexOf("Fatal") >= 0) {
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console.log(__("no accounts found").green);
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return next();
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}
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let firstAccountFound = self.client.parseListAccountsCommandResultToAddress(stdout);
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if (firstAccountFound === undefined || firstAccountFound === "") {
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console.log(__("no accounts found").green);
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return next();
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}
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console.log(__("already initialized").green);
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address = firstAccountFound;
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next(ALREADY_INITIALIZED);
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});
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},
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function genesisBlock(next) {
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//There's no genesis init with Parity. Custom network are set in the chain property at startup
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if (!self.config.genesisBlock || self.client.name === 'parity') {
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return next();
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}
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console.log(__("initializing genesis block").green);
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self.runCommand(self.client.initGenesisCommmand(), {}, (err, _stdout, _stderr) => {
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next(err);
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});
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},
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function newAccount(next) {
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self.runCommand(self.client.newAccountCommand(), {}, (err, stdout, _stderr) => {
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if (err) {
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return next(err);
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}
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address = self.client.parseNewAccountCommandResultToAddress(stdout);
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next();
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});
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}
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], (err) => {
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if (err === ALREADY_INITIALIZED) {
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err = null;
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}
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callback(err, address);
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});
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};
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var BlockchainClient = function(userConfig, clientName, env, onReadyCallback, onExitCallback) {
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if ((userConfig === {} || JSON.stringify(userConfig) === '{"enabled":true}') && env !== 'development') {
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console.log("===> " + __("warning: running default config on a non-development environment"));
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}
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// if client is not set in preferences, default is geth
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if (!userConfig.ethereumClientName) userConfig.ethereumClientName = 'geth';
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// if clientName is set, it overrides preferences
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if (clientName) userConfig.ethereumClientName = clientName;
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// Choose correct client instance based on clientName
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let clientClass;
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switch (userConfig.ethereumClientName) {
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case 'geth':
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clientClass = GethClient;
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break;
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case 'parity':
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clientClass = ParityClient;
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break;
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default:
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console.error(__('Unknow client "%s". Please use one of the following: %s', userConfig.ethereumClientName, 'geth, parity'));
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process.exit();
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}
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userConfig.isDev = (userConfig.isDev || userConfig.default);
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userConfig.env = env;
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userConfig.onReadyCallback = onReadyCallback;
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userConfig.onExitCallback = onExitCallback;
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return new Blockchain(userConfig, clientClass);
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};
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module.exports = BlockchainClient;
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