243 lines
9.3 KiB
JavaScript
243 lines
9.3 KiB
JavaScript
const async = require('async');
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const child_process = require('child_process');
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const _ = require('underscore');
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const fs = require('../../core/fs.js');
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const GethCommands = require('./geth_commands.js');
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/*eslint complexity: ["error", 36]*/
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var Blockchain = function(options) {
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this.blockchainConfig = options.blockchainConfig;
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this.env = options.env || 'development';
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this.client = options.client;
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this.isDev = options.isDev;
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this.onReadyCallback = options.onReadyCallback;
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if ((this.blockchainConfig === {} || JSON.stringify(this.blockchainConfig) === '{"enabled":true}') && this.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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this.config = {
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geth_bin: this.blockchainConfig.geth_bin || 'geth',
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networkType: this.blockchainConfig.networkType || 'custom',
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genesisBlock: this.blockchainConfig.genesisBlock || false,
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datadir: this.blockchainConfig.datadir || false,
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mineWhenNeeded: this.blockchainConfig.mineWhenNeeded || false,
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rpcHost: this.blockchainConfig.rpcHost || 'localhost',
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rpcPort: this.blockchainConfig.rpcPort || 8545,
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rpcCorsDomain: this.blockchainConfig.rpcCorsDomain || false,
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networkId: this.blockchainConfig.networkId || 1337,
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port: this.blockchainConfig.port || 30303,
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nodiscover: this.blockchainConfig.nodiscover || false,
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mine: this.blockchainConfig.mine || false,
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account: this.blockchainConfig.account || {},
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whisper: (this.blockchainConfig.whisper === undefined) || this.blockchainConfig.whisper,
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maxpeers: ((this.blockchainConfig.maxpeers === 0) ? 0 : (this.blockchainConfig.maxpeers || 25)),
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bootnodes: this.blockchainConfig.bootnodes || "",
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rpcApi: (this.blockchainConfig.rpcApi || ['eth', 'web3', 'net']),
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wsRPC: (this.blockchainConfig.wsRPC === undefined) || this.blockchainConfig.wsRPC,
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wsHost: this.blockchainConfig.wsHost || 'localhost',
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wsPort: this.blockchainConfig.wsPort || 8546,
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wsOrigins: this.blockchainConfig.wsOrigins || false,
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wsApi: (this.blockchainConfig.wsApi || ['eth', 'web3', 'net', 'shh']),
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vmdebug: this.blockchainConfig.vmdebug || false,
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targetGasLimit: this.blockchainConfig.targetGasLimit || false,
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light: this.blockchainConfig.light || false,
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fast: this.blockchainConfig.fast || false,
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verbosity: this.blockchainConfig.verbosity
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};
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if (this.blockchainConfig === {} || JSON.stringify(this.blockchainConfig) === '{"enabled":true}') {
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this.config.account = {};
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this.config.account.password = fs.embarkPath("templates/boilerplate/config/development/password");
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this.config.genesisBlock = fs.embarkPath("templates/boilerplate/config/development/genesis.json");
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this.config.datadir = fs.embarkPath(".embark/development/datadir");
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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.client = new options.client({config: this.config, env: this.env, isDev: this.isDev});
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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.blockchainConfig.silent) {
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options.silent = true;
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}
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return child_process.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", this.client.name.underline).magenta);
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console.log("===============================================================================".magenta);
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console.log("===============================================================================".magenta);
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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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console.log(__("could not find {{geth_bin}} command; is {{client_name}} installed or in the PATH?", {geth_bin: this.config.geth_bin, client_name: this.client.name}).green);
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return next(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.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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next();
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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);
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return;
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}
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args = _.compact(args);
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console.trace(`Geth command: ${cmd} ${args.join(' ')}`);
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self.child = child_process.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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self.child.stdout.on('data', (data) => {
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console.log(`Geth error: ${data}`);
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});
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// Geth logs appear in stderr somehow
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self.child.stderr.on('data', (data) => {
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data = data.toString();
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if (self.onReadyCallback && !self.readyCalled && data.indexOf('WebSocket endpoint opened') > -1) {
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self.readyCalled = true;
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self.onReadyCallback();
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}
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console.log('Geth: ' + data);
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});
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self.child.on('exit', (code) => {
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if (code) {
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console.error('Geth exited with error code ' + code);
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}
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});
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});
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};
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Blockchain.prototype.kill = function() {
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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! DApp 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 DApp 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 || stderr || !stdout || stdout.indexOf("not found") >= 0) {
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return callback('Geth not found');
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}
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callback();
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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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// 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 copy(next) {
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// copy mining script
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fs.copy(fs.embarkPath("js"), ".embark/" + self.env + "/js", {overwrite: true}, next);
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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 || stderr || stdout === undefined || stdout.match(/{(\w+)}/) === null || 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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console.log(__("already initialized").green);
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address = stdout.match(/{(\w+)}/)[1];
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next();
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});
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},
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function genesisBlock(next) {
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if (!self.config.genesisBlock) {
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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 = stdout.match(/{(\w+)}/)[1];
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next();
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});
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}
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], (err) => {
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callback(err, address);
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});
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};
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var BlockchainClient = function(blockchainConfig, client, env, isDev, onReadyCallback) {
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// TODO add other clients at some point
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if (client === 'geth') {
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return new Blockchain({blockchainConfig, client: GethCommands, env, isDev, onReadyCallback});
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} else {
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throw new Error('unknown client');
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}
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};
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module.exports = BlockchainClient;
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