import {ZeroEx} from '0x.js'; import BigNumber from 'bignumber.js'; import * as _ from 'lodash'; import {configs} from './configs'; import {errorReporter} from './error_reporter'; import {RequestQueue} from './request_queue'; import {utils} from './utils'; // HACK: web3 leaks XMLHttpRequest into the global scope and causes requests to hang // because they are using the wrong XHR package. // Issue: https://github.com/trufflesuite/truffle-contract/issues/14 // tslint:disable-next-line:ordered-imports import * as Web3 from 'web3'; const DISPENSE_AMOUNT_ZRX = new BigNumber(0.1); const QUEUE_INTERVAL_MS = 5000; export class ZRXRequestQueue extends RequestQueue { private zeroEx: ZeroEx; constructor(web3: Web3) { super(web3); this.queueIntervalMs = QUEUE_INTERVAL_MS; const zeroExConfig = { networkId: configs.KOVAN_NETWORK_ID, }; this.zeroEx = new ZeroEx(web3.currentProvider, zeroExConfig); } protected async processNextRequestFireAndForgetAsync(recipientAddress: string) { utils.consoleLog(`Processing ZRX ${recipientAddress}`); const baseUnitAmount = ZeroEx.toBaseUnitAmount(DISPENSE_AMOUNT_ZRX, 18); try { await this.zeroEx.token.transferAsync( configs.ZRX_TOKEN_ADDRESS, configs.DISPENSER_ADDRESS, recipientAddress, baseUnitAmount, ); utils.consoleLog(`Sent ${DISPENSE_AMOUNT_ZRX} ZRX to ${recipientAddress}`); } catch (err) { utils.consoleLog(`Unexpected err: ${err} - ${JSON.stringify(err)}`); await errorReporter.reportAsync(err); } } }