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runTimer.js
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runTimer.js
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const Web3 = require('@cobinhood/web3');
const { mnemonicToSeed } = require('bip39');
const { fromMasterSeed } = require('ethereumjs-wallet/hdkey');
const { mnemonic } = require('./secret');
const { address, times } = require('./constants');
const lottery = require('./build/contracts/Lottery.json');
const bunyan = require('bunyan');
// Imports the Google Cloud client library for Bunyan
const { LoggingBunyan } = require('@google-cloud/logging-bunyan');
// Creates a Bunyan Stackdriver Logging client
const loggingBunyan = new LoggingBunyan();
// Create a Bunyan logger that streams to Stackdriver Logging
// Logs will be written to: "projects/YOUR_PROJECT_ID/logs/bunyan_log"
const logger = bunyan.createLogger({
// The JSON payload of the log as it appears in Stackdriver Logging
// will contain "name": "my-service"
name: 'dexon-lottery',
streams: [
// Log to the console at 'info' and above
{ stream: process.stdout, level: 'info' },
// And log to Stackdriver Logging, logging at 'info' and above
loggingBunyan.stream('info'),
],
});
const web3 = new Web3('https://testnet-rpc.dexon.org');
let account;
let contract;
const runTime = (time) => {
if ((time + 5) > (Date.now() / 1000)) {
setTimeout(() => runTime(time), 5000);
return;
}
contract.methods.reveal(time).send({
from: account.address,
gas: 1000000,
});
logger.info(`Revealed for: ${time}`);
};
mnemonicToSeed(mnemonic)
.then((seed) => {
const hdWallet = fromMasterSeed(seed);
const key = hdWallet.derivePath('m/44\'/237\'/0\'/0/0');
// eslint-disable-next-line no-underscore-dangle
const privateKey = `0x${key._hdkey._privateKey.toString('hex')}`;
web3.eth.accounts.wallet.add(privateKey);
account = web3.eth.accounts.privateKeyToAccount(privateKey);
contract = new web3.eth.Contract(lottery.abi, address);
times.forEach(runTime);
});
logger.info('Service started');