tornado-relayer/src.bak/sender.js
2020-09-28 05:28:34 +03:00

82 lines
2.9 KiB
JavaScript

const { redisClient } = require('./redis')
const config = require('../config')
const { toBN, toHex, toWei, BN, fromWei } = require('web3-utils')
class Sender {
constructor(web3) {
this.web3 = web3
this.watherInterval = config.watherInterval
this.pendingTxTimeout = config.pendingTxTimeout
this.gasBumpPercentage = 100 + Number(config.gasBumpPercentage)
this.watcher()
}
async watcher() {
try {
const networkNonce = await this.web3.eth.getTransactionCount(this.web3.eth.defaultAccount)
let tx = await redisClient.get('tx:' + networkNonce)
if (tx) {
tx = JSON.parse(tx)
if (Date.now() - tx.date > this.pendingTxTimeout) {
const newGasPrice = toBN(tx.gasPrice).mul(toBN(this.gasBumpPercentage)).div(toBN(100))
const maxGasPrice = toBN(toWei(config.maxGasPrice.toString(), 'Gwei'))
tx.gasPrice = toHex(BN.min(newGasPrice, maxGasPrice))
tx.date = Date.now()
await redisClient.set('tx:' + tx.nonce, JSON.stringify(tx))
console.log('resubmitting with gas price', fromWei(tx.gasPrice.toString(), 'gwei'), ' gwei')
this.sendTx(tx, null, 9999)
}
}
} catch (e) {
console.error('watcher error:', e)
} finally {
setTimeout(() => this.watcher(), this.watherInterval)
}
}
async sendTx(tx, done, retryAttempt = 1) {
let signedTx = await this.web3.eth.accounts.signTransaction(tx, config.privateKey)
let result = this.web3.eth.sendSignedTransaction(signedTx.rawTransaction)
result
.once('transactionHash', (txHash) => {
console.log(`A new successfully sent tx ${txHash}`)
if (done) {
done(null, {
status: 200,
msg: { txHash }
})
}
})
.on('error', async (e) => {
console.log(`Error for tx with nonce ${tx.nonce}\n${e.message}`)
if (
e.message ===
'Returned error: Transaction gas price supplied is too low. There is another transaction with same nonce in the queue. Try increasing the gas price or incrementing the nonce.' ||
e.message === 'Returned error: Transaction nonce is too low. Try incrementing the nonce.' ||
e.message === 'Returned error: nonce too low' ||
e.message === 'Returned error: replacement transaction underpriced'
) {
console.log('nonce too low, retrying')
if (retryAttempt <= 10) {
retryAttempt++
const newNonce = tx.nonce + 1
tx.nonce = newNonce
await redisClient.set('nonce', newNonce)
await redisClient.set('tx:' + newNonce, JSON.stringify(tx))
this.sendTx(tx, done, retryAttempt)
return
}
}
if (done) {
done(null, {
status: 400,
msg: { error: 'Internal Relayer Error. Please use a different relayer service' }
})
}
})
}
}
module.exports = Sender