mirror of
https://github.com/status-im/embark-area-51.git
synced 2025-02-10 06:14:24 +00:00
move blockchain connection code to its own module
This commit is contained in:
Iuri Matias
parent
b2bf717728
commit
45cc43bfc8
@ -1,296 +0,0 @@
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const Web3 = require('web3');
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const async = require('async');
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const Provider = require('./provider.js');
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const utils = require('../utils/utils');
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const WEB3_READY = 'web3Ready';
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class Blockchain {
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constructor(options) {
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const self = this;
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this.plugins = options.plugins;
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this.logger = options.logger;
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this.events = options.events;
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this.contractsConfig = options.contractsConfig;
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this.blockchainConfig = options.blockchainConfig;
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this.web3 = options.web3;
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this.isDev = options.isDev;
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this.web3Endpoint = '';
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this.isWeb3Ready = false;
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this.web3StartedInProcess = false;
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self.events.setCommandHandler("blockchain:web3:isReady", (cb) => {
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console.dir("geting state of web3");
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console.dir(self.isWeb3Ready.toString());
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cb(self.isWeb3Ready);
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});
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if (!this.web3) {
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this.initWeb3();
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} else {
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this.isWeb3Ready = true;
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}
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this.registerServiceCheck();
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this.registerRequests();
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this.registerWeb3Object();
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this.registerEvents();
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}
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initWeb3() {
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const self = this;
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this.web3 = new Web3();
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if (this.contractsConfig.deployment.type !== "rpc" && this.contractsConfig.deployment.type !== "ws") {
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const message = __("contracts config error: unknown deployment type %s", this.contractsConfig.deployment.type);
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this.logger.error(message);
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//return cb(message);
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}
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const protocol = (this.contractsConfig.deployment.type === "rpc") ? this.contractsConfig.deployment.protocol : 'ws';
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this.web3Endpoint = utils.buildUrl(protocol, this.contractsConfig.deployment.host, this.contractsConfig.deployment.port);//`${protocol}://${this.contractsConfig.deployment.host}:${this.contractsConfig.deployment.port}`;
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const providerOptions = {
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web3: this.web3,
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accountsConfig: this.contractsConfig.deployment.accounts,
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blockchainConfig: this.blockchainConfig,
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logger: this.logger,
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isDev: this.isDev,
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type: this.contractsConfig.deployment.type,
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web3Endpoint: self.web3Endpoint
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};
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this.provider = new Provider(providerOptions);
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self.events.request("processes:launch", "blockchain", () => {
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console.dir("======> blockchain launched!");
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console.dir("starting web3 provider");
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self.provider.startWeb3Provider(() => {
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console.dir("funding accounts");
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self.provider.fundAccounts(() => {
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console.dir("registering web3 object");
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self.isWeb3Ready = true;
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self.events.emit(WEB3_READY);
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self.registerWeb3Object();
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//self.events.emit("check:backOnline:Ethereum");
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});
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});
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});
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}
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registerEvents() {
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//const self = this;
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//self.events.on('check:wentOffline:Ethereum', () => {
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// self.logger.trace('Ethereum went offline: stopping web3 provider...');
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// self.provider.stop();
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// // once the node goes back online, we can restart the provider
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// self.events.once('check:backOnline:Ethereum', () => {
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// self.logger.trace('Ethereum back online: starting web3 provider...');
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// self.provider.startWeb3Provider(() => {
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// self.logger.trace('web3 provider restarted after ethereum node came back online');
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// });
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// });
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//});
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}
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onReady(callback) {
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console.dir("======> onReady!!");
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console.dir("this.isWeb3Ready: " + this.isWeb3Ready.toString());
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if (this.isWeb3Ready) {
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return callback();
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}
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this.events.once(WEB3_READY, () => {
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console.dir("got event triggered");
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callback();
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});
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}
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registerServiceCheck() {
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const self = this;
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const NO_NODE = 'noNode';
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this.events.request("services:register", 'Ethereum', function (cb) {
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async.waterfall([
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function checkNodeConnection(next) {
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if (!self.web3.currentProvider) {
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return next(NO_NODE, {name: "No Blockchain node found", status: 'off'});
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}
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next();
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},
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function checkVersion(next) {
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// TODO: web3_clientVersion method is currently not implemented in web3.js 1.0
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self.web3._requestManager.send({method: 'web3_clientVersion', params: []}, (err, version) => {
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if (err) {
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self.isWeb3Ready = false;
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return next(null, {name: "Ethereum node (version unknown)", status: 'on'});
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}
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if (version.indexOf("/") < 0) {
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self.events.emit(WEB3_READY);
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self.isWeb3Ready = true;
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return next(null, {name: version, status: 'on'});
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}
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let nodeName = version.split("/")[0];
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let versionNumber = version.split("/")[1].split("-")[0];
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let name = nodeName + " " + versionNumber + " (Ethereum)";
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self.events.emit(WEB3_READY);
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self.isWeb3Ready = true;
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return next(null, {name: name, status: 'on'});
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});
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}
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], (err, statusObj) => {
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if (err && err !== NO_NODE) {
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return cb(err);
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}
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console.dir(statusObj);
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cb(statusObj);
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});
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}, 5000, 'off');
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}
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registerRequests() {
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const self = this;
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this.events.setCommandHandler("blockchain:defaultAccount:get", function(cb) {
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cb(self.defaultAccount());
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});
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this.events.setCommandHandler("blockchain:defaultAccount:set", function(account, cb) {
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self.setDefaultAccount(account);
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cb();
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});
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this.events.setCommandHandler("blockchain:block:byNumber", function(blockNumber, cb) {
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self.getBlock(blockNumber, cb);
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});
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this.events.setCommandHandler("blockchain:gasPrice", function(cb) {
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self.getGasPrice(cb);
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});
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this.events.setCommandHandler("blockchain:contract:create", function(params, cb) {
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cb(self.ContractObject(params));
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});
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}
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defaultAccount() {
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return this.web3.eth.defaultAccount;
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}
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setDefaultAccount(account) {
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this.web3.eth.defaultAccount = account;
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}
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getAccounts(cb) {
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this.web3.eth.getAccounts(cb);
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}
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getCode(address, cb) {
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this.web3.eth.getCode(address, cb);
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}
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getBlock(blockNumber, cb) {
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this.web3.eth.getBlock(blockNumber, cb);
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}
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getGasPrice(cb) {
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console.dir("geting gas price");
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const self = this;
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this.onReady(() => {
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console.dir("it's ready, getting gas price");
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self.web3.eth.getGasPrice(cb);
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});
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}
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ContractObject(params) {
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return new this.web3.eth.Contract(params.abi, params.address);
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}
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deployContractObject(contractObject, params) {
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return contractObject.deploy({arguments: params.arguments, data: params.data});
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}
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estimateDeployContractGas(deployObject, cb) {
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return deployObject.estimateGas().then((gasValue) => {
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cb(null, gasValue);
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}).catch(cb);
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}
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deployContractFromObject(deployContractObject, params, cb) {
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const self = this;
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let hash;
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let calledBacked = false;
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function callback(err, receipt) {
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if (calledBacked) {
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return;
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}
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if (!err && !receipt.contractAddress) {
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return; // Not deployed yet. Need to wait
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}
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if (interval) {
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clearInterval(interval);
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}
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calledBacked = true;
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cb(err, receipt);
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}
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// This interval is there to compensate for the event that sometimes doesn't get triggered when using WebSocket
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// FIXME The issue somehow only happens when the blockchain node is started in the same terminal
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const interval = setInterval(() => {
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if (!hash) {
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return; // Wait until we receive the hash
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}
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self.web3.eth.getTransactionReceipt(hash, (err, receipt) => {
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if (!err && !receipt) {
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return; // Transaction is not yet complete
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}
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callback(err, receipt);
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});
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}, 500);
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deployContractObject.send({
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from: params.from, gas: params.gas, gasPrice: params.gasPrice
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}, function (err, transactionHash) {
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if (err) {
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return callback(err);
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}
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hash = transactionHash;
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}).on('receipt', function (receipt) {
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if (receipt.contractAddress !== undefined) {
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callback(null, receipt);
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}
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}).then(function (_contract) {
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if (!hash) {
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return; // Somehow we didn't get the receipt yet... Interval will catch it
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}
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self.web3.eth.getTransactionReceipt(hash, callback);
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}).catch(callback);
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}
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determineDefaultAccount(cb) {
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const self = this;
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self.getAccounts(function (err, accounts) {
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if (err) {
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self.logger.error(err);
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return cb(new Error(err));
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}
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let accountConfig = self.blockchainConfig.account;
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let selectedAccount = accountConfig && accountConfig.address;
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self.setDefaultAccount(selectedAccount || accounts[0]);
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cb();
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});
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}
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registerWeb3Object() {
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// doesn't feel quite right, should be a cmd or plugin method
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// can just be a command without a callback
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this.events.emit("runcode:register", "web3", this.web3);
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}
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}
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module.exports = Blockchain;
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@ -1,34 +1,28 @@
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const Web3 = require('web3');
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const async = require('async');
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const Provider = require('./provider.js');
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const utils = require('../../utils/utils');
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const constants = require('../../constants');
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const embarkJsUtils = require('embarkjs').Utils;
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const utils = require('../utils/utils');
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const WEB3_READY = 'web3Ready';
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// TODO: consider another name, this is the blockchain connector
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class BlockchainConnector {
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constructor(embark, options) {
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class Blockchain {
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constructor(options) {
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const self = this;
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this.plugins = options.plugins;
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this.logger = embark.logger;
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this.events = embark.events;
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this.contractsConfig = embark.config.contractsConfig;
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this.blockchainConfig = embark.config.blockchainConfig;
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this.logger = options.logger;
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this.events = options.events;
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this.contractsConfig = options.contractsConfig;
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this.blockchainConfig = options.blockchainConfig;
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this.web3 = options.web3;
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this.isDev = options.isDev;
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this.web3Endpoint = '';
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this.isWeb3Ready = false;
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this.web3StartedInProcess = false;
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self.events.setCommandHandler("blockchain:web3:isReady", (cb) => {
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cb(self.isWeb3Ready);
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});
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self.events.setCommandHandler("blockchain:object", (cb) => {
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cb(self);
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});
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if (!this.web3) {
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this.initWeb3();
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} else {
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@ -38,19 +32,9 @@ class BlockchainConnector {
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this.registerRequests();
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this.registerWeb3Object();
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this.registerEvents();
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this.subscribeToPendingTransactions();
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}
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//initWeb3() {
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initWeb3(cb) {
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if (!cb) {
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cb = function(){};
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}
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if (this.isWeb3Ready) {
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this.events.emit(WEB3_READY);
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return cb();
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}
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initWeb3() {
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const self = this;
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this.web3 = new Web3();
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@ -232,14 +216,60 @@ class BlockchainConnector {
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}
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deployContractFromObject(deployContractObject, params, cb) {
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embarkJsUtils.secureSend(this.web3, deployContractObject, {
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const self = this;
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let hash;
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let calledBacked = false;
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function callback(err, receipt) {
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if (calledBacked) {
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return;
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}
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if (!err && !receipt.contractAddress) {
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return; // Not deployed yet. Need to wait
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}
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if (interval) {
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clearInterval(interval);
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}
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calledBacked = true;
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cb(err, receipt);
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}
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// This interval is there to compensate for the event that sometimes doesn't get triggered when using WebSocket
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// FIXME The issue somehow only happens when the blockchain node is started in the same terminal
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const interval = setInterval(() => {
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if (!hash) {
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return; // Wait until we receive the hash
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}
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self.web3.eth.getTransactionReceipt(hash, (err, receipt) => {
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if (!err && !receipt) {
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return; // Transaction is not yet complete
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}
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callback(err, receipt);
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});
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}, 500);
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deployContractObject.send({
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from: params.from, gas: params.gas, gasPrice: params.gasPrice
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}, true, cb);
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}, function (err, transactionHash) {
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if (err) {
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return callback(err);
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}
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hash = transactionHash;
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}).on('receipt', function (receipt) {
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if (receipt.contractAddress !== undefined) {
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callback(null, receipt);
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}
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}).then(function (_contract) {
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if (!hash) {
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return; // Somehow we didn't get the receipt yet... Interval will catch it
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}
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self.web3.eth.getTransactionReceipt(hash, callback);
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}).catch(callback);
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}
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determineDefaultAccount(cb) {
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const self = this;
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self.getAccounts(function(err, accounts) {
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self.getAccounts(function (err, accounts) {
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if (err) {
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self.logger.error(err);
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return cb(new Error(err));
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@ -256,21 +286,7 @@ class BlockchainConnector {
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// can just be a command without a callback
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this.events.emit("runcode:register", "web3", this.web3, false);
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}
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subscribeToPendingTransactions() {
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const self = this;
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this.onReady(() => {
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if (self.logsSubscription) {
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self.logsSubscription.unsubscribe();
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}
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self.logsSubscription = self.web3.eth
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.subscribe('newBlockHeaders', () => {})
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.on("data", function (blockHeader) {
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self.events.emit('block:header', blockHeader);
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});
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});
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}
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}
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module.exports = BlockchainConnector;
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module.exports = Blockchain;
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@ -11,13 +11,17 @@ class Provider {
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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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this.engine = new ProviderEngine();
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this.asyncMethods = {};
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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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self.engine.addProvider(new RpcSubprovider({
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rpcUrl: self.web3Endpoint
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}));
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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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self.provider.on('error', e => self.logger.error('Websocket Error', e));
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@ -26,7 +30,25 @@ class Provider {
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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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// network connectivity error
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self.engine.on('error', (err) => {
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// report connectivity errors
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self.logger.error(err);
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});
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self.engine.start();
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//self.on('error', (err) => {
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// console.log('ERR', JSON.stringify(err));
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// // report connectivity errors as trace due to polling
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// self.logger.trace('web3 provider error: ', err);
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// self.logger.trace('stopping web3 provider due to error');
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// // prevent continuous polling errors
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// self.stop();
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//});
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//self.web3.setProvider(self);
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//self.start();
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self.accounts = AccountParser.parseAccountsConfig(self.accountsConfig, self.web3, self.logger);
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self.addresses = [];
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@ -38,16 +60,22 @@ class Provider {
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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) {
|
||||
if (payload.method === 'eth_accounts') {
|
||||
return realSend(payload, function (err, result) {
|
||||
|
||||
self.realAccountFunction = self.web3.eth.getAccounts;
|
||||
self.web3.eth.getAccounts = function (cb) {
|
||||
if (!cb) {
|
||||
cb = function () {
|
||||
};
|
||||
}
|
||||
return new Promise((resolve, reject) => {
|
||||
self.realAccountFunction((err, accounts) => {
|
||||
if (err) {
|
||||
return cb(err);
|
||||
}
|
||||
result.result = result.result.concat(self.addresses);
|
||||
cb(null, result);
|
||||
accounts = accounts.concat(self.addresses);
|
||||
// accounts = self.addresses.concat(accounts);
|
||||
cb(null, accounts);
|
||||
resolve(accounts);
|
||||
});
|
||||
}
|
||||
realSend(payload, cb);
|
||||
@ -75,10 +103,36 @@ class Provider {
|
||||
if (!self.isDev) {
|
||||
return callback();
|
||||
}
|
||||
async.eachLimit(self.accounts, 1, (account, eachCb) => {
|
||||
async.each(self.accounts, (account, eachCb) => {
|
||||
fundAccount(self.web3, account.address, account.hexBalance, eachCb);
|
||||
}, callback);
|
||||
}
|
||||
|
||||
stop() {
|
||||
this.engine.stop();
|
||||
}
|
||||
|
||||
eth_accounts(payload, cb) {
|
||||
return cb(null, this.addresses);
|
||||
}
|
||||
|
||||
sendAsync(payload, callback) {
|
||||
let method = this.asyncMethods[payload.method];
|
||||
if (method) {
|
||||
return method.call(method, payload, (err, result) => {
|
||||
if (err) {
|
||||
return callback(err);
|
||||
}
|
||||
let response = {'id': payload.id, 'jsonrpc': '2.0', 'result': result};
|
||||
callback(null, response);
|
||||
});
|
||||
}
|
||||
this.engine.sendAsync.apply(this.engine, arguments);
|
||||
}
|
||||
|
||||
send() {
|
||||
return this.engine.send.apply(this.engine, arguments);
|
||||
}
|
||||
}
|
||||
|
||||
module.exports = Provider;
|
||||
|
||||
82
lib/modules/blockchain_connector/provider.js~HEAD
Normal file
82
lib/modules/blockchain_connector/provider.js~HEAD
Normal file
@ -0,0 +1,82 @@
|
||||
const async = require('async');
|
||||
const AccountParser = require('../../utils/accountParser');
|
||||
const fundAccount = require('./fundAccount');
|
||||
|
||||
class Provider {
|
||||
constructor(options) {
|
||||
this.web3 = options.web3;
|
||||
this.accountsConfig = options.accountsConfig;
|
||||
this.blockchainConfig = options.blockchainConfig;
|
||||
this.type = options.type;
|
||||
this.web3Endpoint = options.web3Endpoint;
|
||||
this.logger = options.logger;
|
||||
this.isDev = options.isDev;
|
||||
}
|
||||
|
||||
startWeb3Provider(callback) {
|
||||
const self = this;
|
||||
|
||||
if (this.type === 'rpc') {
|
||||
self.provider = new this.web3.providers.HttpProvider(self.web3Endpoint);
|
||||
} else if (this.type === 'ws') {
|
||||
self.provider = new this.web3.providers.WebsocketProvider(self.web3Endpoint, {headers: {Origin: "embark"}});
|
||||
} else {
|
||||
return callback(__("contracts config error: unknown deployment type %s", this.type));
|
||||
}
|
||||
|
||||
self.web3.setProvider(self.provider);
|
||||
|
||||
self.accounts = AccountParser.parseAccountsConfig(self.accountsConfig, self.web3, self.logger);
|
||||
self.addresses = [];
|
||||
|
||||
if (!self.accounts.length) {
|
||||
return callback();
|
||||
}
|
||||
self.accounts.forEach(account => {
|
||||
self.addresses.push(account.address);
|
||||
self.web3.eth.accounts.wallet.add(account);
|
||||
});
|
||||
self.web3.eth.defaultAccount = self.addresses[0];
|
||||
const realSend = self.provider.send.bind(self.provider);
|
||||
self.provider.send = function (payload, cb) {
|
||||
if (payload.method === 'eth_accounts') {
|
||||
return realSend(payload, function (err, result) {
|
||||
if (err) {
|
||||
return cb(err);
|
||||
}
|
||||
result.result = result.result.concat(self.addresses);
|
||||
cb(null, result);
|
||||
});
|
||||
}
|
||||
realSend(payload, cb);
|
||||
};
|
||||
|
||||
callback();
|
||||
}
|
||||
|
||||
stop() {
|
||||
if (this.provider && this.provider.removeAllListeners) {
|
||||
this.provider.removeAllListeners('connect');
|
||||
this.provider.removeAllListeners('error');
|
||||
this.provider.removeAllListeners('end');
|
||||
this.provider.removeAllListeners('data');
|
||||
this.provider.responseCallbacks = {};
|
||||
this.provider = null;
|
||||
}
|
||||
}
|
||||
|
||||
fundAccounts(callback) {
|
||||
const self = this;
|
||||
if (!self.accounts.length) {
|
||||
return callback();
|
||||
}
|
||||
if (!self.isDev) {
|
||||
return callback();
|
||||
}
|
||||
async.eachLimit(self.accounts, 1, (account, eachCb) => {
|
||||
fundAccount(self.web3, account.address, account.hexBalance, eachCb);
|
||||
}, callback);
|
||||
}
|
||||
}
|
||||
|
||||
module.exports = Provider;
|
||||
Loading…
x
Reference in New Issue
Block a user