118 lines
3.6 KiB
JavaScript
118 lines
3.6 KiB
JavaScript
const async = require('async');
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const Web3 = require('web3');
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const {getWeiBalanceFromString, buildUrl} = require('../../utils/utils.js');
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const {readFileSync, dappPath} = require('../../core/fs');
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class DevFunds {
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constructor(options) {
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this.blockchainConfig = options.blockchainConfig;
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this.accounts = [];
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this.numAccounts = this.blockchainConfig.account.numAccounts || 0;
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this.password = this.blockchainConfig.account.password ? readFileSync(dappPath(this.blockchainConfig.account.password), 'utf8').replace('\n', '') : 'dev_password';
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this.networkId = null;
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this.balance = Web3.utils.toWei("1", "ether");
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this.provider = options.provider || new Web3.providers.WebsocketProvider(buildUrl('ws', this.blockchainConfig.wsHost, this.blockchainConfig.wsPort), {headers: {Origin: "http://localhost:8000"}});
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this.web3 = new Web3(this.provider);
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if (this.blockchainConfig.account.balance) {
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this.balance = getWeiBalanceFromString(this.blockchainConfig.account.balance, this.web3);
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}
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this.logger = options.logger || console;
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}
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static async new(options){
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const df = new DevFunds(options);
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await df._init();
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return df;
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}
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async _init () {
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const accounts = await this.web3.eth.getAccounts();
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this.web3.eth.defaultAccount = accounts[0];
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if (accounts.length > 1) {
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this.accounts = accounts.slice(1);
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}
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}
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_sendTx() {
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if (this.networkId !== 1337) {
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return;
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}
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this.web3.eth.sendTransaction({value: "1000000000000000", to: "0xA2817254cb8E7b6269D1689c3E0eBadbB78889d1", from: this.web3.eth.defaultAccount});
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}
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// trigger regular txs due to a bug in geth and stuck transactions in --dev mode
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_regularTxs(cb) {
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const self = this;
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self.web3.eth.net.getId().then((networkId) => {
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self.networkId = networkId;
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if (self.networkId !== 1337) {
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return;
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}
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setInterval(function () { self._sendTx(); }, 1500);
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if (cb) {
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cb();
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}
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});
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}
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_regularUnlocks() {
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const self = this;
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setInterval(function () { self.unlockAccounts(self.password, () => { }); }, 20000);
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}
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createAccounts(numAccounts, password, cb) {
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const numAccountsToCreate = numAccounts - (this.accounts.length + 1);
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if (numAccountsToCreate === 0) return cb();
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async.timesLimit(numAccountsToCreate, 1, (_, next) => {
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this.web3.eth.personal.newAccount(password, next);
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}, (err, accounts) => {
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if (err) return cb(err);
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this.accounts = accounts;
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cb();
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});
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}
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unlockAccounts(password, cb) {
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async.each(this.accounts, (account, next) => {
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this.web3.eth.personal.unlockAccount(account, password).then((_result) => {
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next();
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}).catch(next);
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}, cb);
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}
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fundAccounts(balance, cb) {
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async.each(this.accounts, (account, next) => {
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this.web3.eth.getBalance(account).then(currBalance => {
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const remainingBalance = balance - currBalance;
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if (remainingBalance <= 0) return next();
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this.web3.eth.sendTransaction({to: account, value: remainingBalance}).catch(next);
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next(); // don't wait for the tx receipt as it never comes!
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}).catch(cb);
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}, cb);
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}
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createFundAndUnlockAccounts(cb) {
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if (!this.web3) {
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return cb();
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}
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async.waterfall([
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(next) => {
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this.createAccounts(this.numAccounts, this.password, next);
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},
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(next) => {
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this.unlockAccounts(this.password, next);
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},
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(next) => {
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this._regularTxs();
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this._regularUnlocks();
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this.fundAccounts(this.balance, next);
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}
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], cb);
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}
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}
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module.exports = DevFunds;
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