103 lines
3.1 KiB
JavaScript
103 lines
3.1 KiB
JavaScript
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const { queue } = require('./queue')
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const Web3 = require('web3')
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const { rpcUrl, redisUrl, privateKey, netId, gasBumpInterval, gasBumpPercentage, maxGasPrice } = require('../config')
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const { numberToHex, toWei, toHex, toBN, fromWei, toChecksumAddress, BN } = require('web3-utils')
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const tornadoABI = require('../abis/tornadoABI.json')
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const MerkleTree = require('fixed-merkle-tree')
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const { setSafeInterval, poseidonHash2 } = require('./utils')
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const Redis = require('ioredis')
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const redis = new Redis(redisUrl)
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const redisSubscribe = new Redis(redisUrl)
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const { GasPriceOracle } = require('gas-price-oracle')
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const gasPriceOracle = new GasPriceOracle({ defaultRpc: rpcUrl })
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queue.process(process)
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redisSubscribe.subscribe('treeUpdate', fetchTree)
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let web3
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let nonce
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let currentTx
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let tree
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async function fetchTree() {
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const elements = await redis.get('tree:elements')
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const convert = (_, val) => typeof(val) === 'string' ? toBN(val) : val
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tree = MerkleTree.deserialize(JSON.parse(elements, convert), poseidonHash2)
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if (currentTx) {
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// todo replace
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}
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}
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async function watcher() {
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if (currentTx && Date.now() - currentTx.date > gasBumpInterval) {
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const newGasPrice = toBN(currentTx.gasPrice).mul(toBN(gasBumpPercentage)).div(toBN(100))
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const maxGasPrice = toBN(toWei(maxGasPrice.toString(), 'Gwei'))
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currentTx.gasPrice = toHex(BN.min(newGasPrice, maxGasPrice))
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currentTx.date = Date.now()
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console.log(`Resubmitting with gas price ${fromWei(currentTx.gasPrice.toString(), 'gwei')} gwei`)
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//await this.sendTx(tx, null, 9999)
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}
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}
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async function init() {
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web3 = new Web3(rpcUrl, null, { transactionConfirmationBlocks: 1 })
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const account = web3.eth.accounts.privateKeyToAccount('0x' + privateKey)
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web3.eth.accounts.wallet.add('0x' + privateKey)
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web3.eth.defaultAccount = account.address
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nonce = await web3.eth.getTransactionCount(account.address, 'latest')
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await fetchTree()
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setSafeInterval(watcher, 1000)
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}
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async function checkTornadoFee(contract, fee, refund) {
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}
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async function process(job) {
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if (job.type !== 'tornadoWithdraw') {
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throw new Error('not implemented')
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}
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console.log(Date.now(), ' withdraw started', job.id)
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const { proof, args, contract } = job.data
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const fee = toBN(args[4])
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const refund = toBN(args[5])
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await checkTornadoFee(contract, fee, refund)
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const instance = new web3.eth.Contract(tornadoABI, contract)
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const data = instance.methods.withdraw(proof, ...args).encodeABI()
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const gasPrices = await gasPriceOracle.gasPrices()
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const tx = {
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from: web3.eth.defaultAccount,
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value: numberToHex(refund),
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gasPrice: toHex(toWei(gasPrices.fast.toString(), 'gwei')),
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to: contract,
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netId,
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data,
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nonce,
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}
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// nonce++ later
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const gas = await web3.eth.estimateGas(tx)
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tx.gas = gas
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let signedTx = await this.web3.eth.accounts.signTransaction(tx, privateKey)
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let result = this.web3.eth.sendSignedTransaction(signedTx.rawTransaction)
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result.once('transactionHash', async (txHash) => {
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console.log(`A new successfully sent tx ${txHash}`)
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job.data.txHash = txHash
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await job.update(job.data)
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})
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await result
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}
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async function main() {
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await init()
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}
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// main()
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fetchTree()
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