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https://github.com/tornadocash/tornado-relayer
synced 2024-02-02 15:04:06 +01:00
detect tx reverts
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poma
parent
2b0415c542
commit
e8bf718143
131
src/worker.js
131
src/worker.js
@ -36,6 +36,8 @@ let tree
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let txManager
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let controller
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let swap
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let minerContract
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let proxyContract
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const redis = new Redis(redisUrl)
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const redisSubscribe = new Redis(redisUrl)
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const gasPriceOracle = new GasPriceOracle({ defaultRpc: httpRpcUrl })
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@ -83,6 +85,8 @@ async function start() {
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const { CONFIRMATIONS, MAX_GAS_PRICE } = process.env
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txManager = new TxManager({ privateKey, rpcUrl: httpRpcUrl, config: { CONFIRMATIONS, MAX_GAS_PRICE } })
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swap = new web3.eth.Contract(swapABI, await resolver.resolve(torn.rewardSwap.address))
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minerContract = new web3.eth.Contract(miningABI, await resolver.resolve(torn.miningV2.address))
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proxyContract = new web3.eth.Contract(tornadoProxyABI, await resolver.resolve(torn.tornadoProxy.address))
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redisSubscribe.subscribe('treeUpdate', fetchTree)
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await fetchTree()
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const provingKeys = {
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@ -175,8 +179,7 @@ async function getTxObject({ data }) {
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if (data.type === jobType.TORNADO_WITHDRAW) {
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let contract, calldata
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if (getInstance(data.contract).currency === 'eth') {
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const tornadoProxyAddress = await resolver.resolve(torn.tornadoProxy.address)
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contract = new web3.eth.Contract(tornadoProxyABI, tornadoProxyAddress)
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contract = proxyContract
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calldata = contract.methods.withdraw(data.contract, data.proof, ...data.args).encodeABI()
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} else {
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contract = new web3.eth.Contract(tornadoABI, data.contract)
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@ -188,17 +191,65 @@ async function getTxObject({ data }) {
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data: calldata,
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}
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} else {
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const minerAddress = await resolver.resolve(torn.miningV2.address)
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const contract = new web3.eth.Contract(miningABI, minerAddress)
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const method = data.type === jobType.MINING_REWARD ? 'reward' : 'withdraw'
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const calldata = contract.methods[method](data.proof, data.args).encodeABI()
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const calldata = minerContract.methods[method](data.proof, data.args).encodeABI()
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return {
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to: minerAddress,
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to: minerContract._address,
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data: calldata,
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}
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}
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}
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function extractRevertReason(msg) {
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console.log('RAW error message:', msg)
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if (!msg.startsWith('Node error: ')) {
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console.log('Failed to parse error message from Ethereum call: ' + msg)
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return null
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}
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// Trim "Node error: "
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const errorObjectStr = msg.slice(12)
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// Parse the error object
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const errorObject = JSON.parse(errorObjectStr)
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if (!errorObject.data) {
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console.log('Failed to parse data field error object:' + errorObjectStr)
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return null
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}
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if (errorObject.data.startsWith('Reverted 0x')) {
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// Trim "Reverted 0x" from the data field
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msg = errorObject.data.slice(11)
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} else if (errorObject.data.startsWith('0x')) {
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// Trim "0x" from the data field
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msg = errorObject.data.slice(2)
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} else {
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console.log('Failed to parse data field error object:' + errorObjectStr)
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return null
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}
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// Get the length of the revert reason
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const strLen = parseInt(msg.slice(8 + 64, 8 + 128), 16)
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// Using the length and known offset, extract and convert the revert reason
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const reasonCodeHex = msg.slice(8 + 128, 8 + 128 + (strLen * 2))
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// Convert reason from hex to string
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const reason = web3.utils.hexToAscii('0x' + reasonCodeHex)
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return reason
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}
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async function isOutdatedTreeRevert(receipt, currentTx) {
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try {
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await web3.eth.call(currentTx.tx, receipt.blockNumber)
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console.log('Simulated call successful')
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return false
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} catch(e) {
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const reason = extractRevertReason(e.message)
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console.log('Decoded revert reason:', reason)
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return reason === 'Outdated account merkle root' || reason === 'Outdated tree update merkle root'
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}
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}
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async function processJob(job) {
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try {
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if (!jobType[job.data.type]) {
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@ -207,31 +258,7 @@ async function processJob(job) {
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currentJob = job
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await updateStatus(status.ACCEPTED)
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console.log(`Start processing a new ${job.data.type} job #${job.id}`)
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await checkFee(job)
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currentTx = await txManager.createTx(await getTxObject(job))
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if (job.data.type !== jobType.TORNADO_WITHDRAW) {
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await fetchTree()
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}
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try {
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await currentTx
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.send()
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.on('transactionHash', txHash => {
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updateTxHash(txHash)
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updateStatus(status.SENT)
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})
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.on('mined', receipt => {
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console.log('Mined in block', receipt.blockNumber)
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updateStatus(status.MINED)
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})
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.on('confirmations', updateConfirmations)
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await updateStatus(status.CONFIRMED)
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} catch (e) {
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console.error('Revert', e)
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throw new Error(`Revert by smart contract ${e.message}`)
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}
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await submitTx(job)
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} catch (e) {
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console.error(e)
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await updateStatus(status.FAILED)
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@ -239,6 +266,48 @@ async function processJob(job) {
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}
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}
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async function submitTx(job, retry = 0) {
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await checkFee(job)
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currentTx = await txManager.createTx(await getTxObject(job))
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if (job.data.type !== jobType.TORNADO_WITHDRAW) {
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await fetchTree()
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}
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try {
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const receipt = await currentTx
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.send()
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.on('transactionHash', txHash => {
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updateTxHash(txHash)
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updateStatus(status.SENT)
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})
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.on('mined', receipt => {
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console.log('Mined in block', receipt.blockNumber)
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updateStatus(status.MINED)
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})
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.on('confirmations', updateConfirmations)
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if (receipt.status === 1) {
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await updateStatus(status.CONFIRMED)
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} else {
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if (job.data.type !== jobType.TORNADO_WITHDRAW && await isOutdatedTreeRevert(receipt, currentTx)) {
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if (retry < 3) {
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await submitTx(job, retry + 1)
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} else {
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throw new Error('Tree update retry limit exceeded')
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}
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} else {
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throw new Error('Submitted transaction failed')
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}
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}
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} catch (e) {
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// todo this could result in duplicated error logs
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// todo handle a case where account tree is still not up to date (wait and retry)?
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console.error('Revert', e)
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throw new Error(`Revert by smart contract ${e.message}`)
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}
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}
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async function updateTxHash(txHash) {
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console.log(`A new successfully sent tx ${txHash}`)
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currentJob.data.txHash = txHash
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