88 lines
3.2 KiB
JavaScript
88 lines
3.2 KiB
JavaScript
var mkdirp = require('mkdirp');
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var wrench = require('wrench');
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var colors = require('colors');
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var GethCommands = require('./geth_commands.js');
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var Blockchain = function(blockchainConfig, Client) {
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this.blockchainConfig = blockchainConfig;
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this.config = {
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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 || 12301,
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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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};
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if (this.blockchainConfig.whisper === false) {
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this.config.whisper = false;
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} else {
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this.config.whisper = (this.blockchainConfig.whisper || true);
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}
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this.client = new Client({config: this.config});
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};
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Blockchain.prototype.runCommand = function(cmd) {
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console.log(("running: " + cmd.underline).green);
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return exec(cmd);
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};
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Blockchain.prototype.run = function() {
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console.log("===============================================================================".magenta);
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console.log("===============================================================================".magenta);
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console.log(("Embark Blockchain Using: " + this.client.name.underline).magenta);
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console.log("===============================================================================".magenta);
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console.log("===============================================================================".magenta);
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var address = this.initChainAndGetAddress();
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var mainCommand = this.client.mainCommand(address);
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this.runCommand(mainCommand);
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};
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Blockchain.prototype.initChainAndGetAddress = function() {
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var address = null, result;
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// ensure datadir exists, bypassing the interactive liabilities prompt.
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this.datadir = '.embark/development/datadir';
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mkdirp.sync(this.datadir);
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// copy mining script
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wrench.copyDirSyncRecursive(__dirname + "/../js", ".embark/development/js", {forceDelete: true});
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// check if an account already exists, create one if not, return address
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result = this.runCommand(this.client.listAccountsCommand());
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if (result.output === undefined || result.output === '' || result.output.indexOf("Fatal") >= 0) {
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console.log("no accounts found".green);
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if (this.config.genesisBlock) {
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console.log("initializing genesis block".green);
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result = this.runCommand(this.client.initGenesisCommmand());
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}
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result = this.runCommand(this.client.newAccountCommand());
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address = result.output.match(/{(\w+)}/)[1];
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} else {
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console.log("already initialized".green);
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address = result.output.match(/{(\w+)}/)[1];
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}
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return address;
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};
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var BlockchainClient = function(blockchainConfig, client) {
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if (client === 'geth') {
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return new Blockchain(blockchainConfig, GethCommands);
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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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