mirror of https://github.com/embarklabs/embark.git
83 lines
2.4 KiB
JavaScript
83 lines
2.4 KiB
JavaScript
const async = require('async');
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const AccountParser = require('./accountParser');
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const fundAccount = require('./fundAccount');
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class Provider {
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constructor(options) {
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this.web3 = options.web3;
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this.accountsConfig = options.accountsConfig;
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this.blockchainConfig = options.blockchainConfig;
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this.type = options.type;
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this.web3Endpoint = options.web3Endpoint;
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this.logger = options.logger;
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this.isDev = options.isDev;
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}
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startWeb3Provider(callback) {
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const self = this;
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if (this.type === 'rpc') {
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self.provider = new this.web3.providers.HttpProvider(self.web3Endpoint);
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} else if (this.type === 'ws') {
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self.provider = new this.web3.providers.WebsocketProvider(self.web3Endpoint, {headers: {Origin: "embark"}});
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} else {
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return callback(__("contracts config error: unknown deployment type %s", this.type));
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}
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self.web3.setProvider(self.provider);
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self.accounts = AccountParser.parseAccountsConfig(self.accountsConfig, self.web3, self.logger);
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self.addresses = [];
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if (!self.accounts.length) {
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return callback();
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}
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self.accounts.forEach(account => {
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self.addresses.push(account.address);
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self.web3.eth.accounts.wallet.add(account);
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});
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self.web3.eth.defaultAccount = self.addresses[0];
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const realSend = self.provider.send.bind(self.provider);
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self.provider.send = function (payload, cb) {
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if (payload.method === 'eth_accounts') {
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return realSend(payload, function (err, result) {
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if (err) {
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return cb(err);
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}
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result.result = result.result.concat(self.addresses);
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cb(null, result);
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});
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}
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realSend(payload, cb);
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};
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callback();
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}
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stop() {
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if (this.provider && this.provider.removeAllListeners) {
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this.provider.removeAllListeners('connect');
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this.provider.removeAllListeners('error');
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this.provider.removeAllListeners('end');
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this.provider.removeAllListeners('data');
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this.provider.responseCallbacks = {};
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this.provider = null;
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}
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}
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fundAccounts(callback) {
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const self = this;
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if (!self.accounts.length) {
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return callback();
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}
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if (!self.isDev) {
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return callback();
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}
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async.eachLimit(self.accounts, 1, (account, eachCb) => {
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fundAccount(self.web3, account.address, account.hexBalance, eachCb);
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}, callback);
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}
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}
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module.exports = Provider;
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