Created
October 31, 2019 16:31
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const Web3 = require('web3'); | |
class TransactionChecker { | |
web3; | |
account; | |
constructor(projectId, account) { | |
this.web3 = new Web3(new Web3.providers.HttpProvider('https://rinkeby.infura.io/v3/' + projectId)); | |
this.account = account.toLowerCase(); | |
} | |
async checkBlock() { | |
let block = await this.web3.eth.getBlock('latest'); | |
let number = block.number; | |
console.log('Searching block ' + number); | |
if (block != null && block.transactions != null) { | |
for (let txHash of block.transactions) { | |
let tx = await this.web3.eth.getTransaction(txHash); | |
if (this.account == tx.to.toLowerCase()) { | |
console.log('Transaction found on block: ' + number); | |
console.log({address: tx.from, value: this.web3.utils.fromWei(tx.value, 'ether'), timestamp: new Date()}); | |
} | |
} | |
} | |
} | |
} | |
let txChecker = new TransactionChecker(process.env.INFURA_ID, '0xe1Dd30fecAb8a63105F2C035B084BfC6Ca5B1493'); | |
setInterval(() => { | |
txChecker.checkBlock(); | |
}, 15 * 1000); |
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using for loop or setInterval function has stuck problem, you could use api