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