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Code

Exponentional backoff on transaction retry in pending-tx-tracker

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This commit is contained in:
Dan 2017-12-05 17:21:14 -03:30
parent c30b543a80
commit ae2a4d78e8
2 changed files with 20 additions and 2 deletions
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6
app/scripts/controllers/transactions.js
View File

@ -72,6 +72,12 @@ module.exports = class TransactionController extends EventEmitter {
})
this.pendingTxTracker.on('tx:failed', this.txStateManager.setTxStatusFailed.bind(this.txStateManager))
this.pendingTxTracker.on('tx:confirmed', this.txStateManager.setTxStatusConfirmed.bind(this.txStateManager))
this.pendingTxTracker.on('tx:block-update', (txMeta, latestBlockNumber) => {
if (!txMeta.firstRetryBlockNumber) {
txMeta.firstRetryBlockNumber = latestBlockNumber
this.txStateManager.updateTx(txMeta, 'transactions/pending-tx-tracker#event: tx:retry')
}
})
this.pendingTxTracker.on('tx:retry', (txMeta) => {
if (!('retryCount' in txMeta)) txMeta.retryCount = 0
txMeta.retryCount++

16
app/scripts/lib/pending-tx-tracker.js
View File

@ -65,7 +65,7 @@ module.exports = class PendingTransactionTracker extends EventEmitter {
}
resubmitPendingTxs () {
resubmitPendingTxs (block) {
const pending = this.getPendingTransactions()
// only try resubmitting if their are transactions to resubmit
if (!pending.length) return
@ -101,13 +101,25 @@ module.exports = class PendingTransactionTracker extends EventEmitter {
}))
}
async _resubmitTx (txMeta) {
async _resubmitTx (txMeta, latestBlockNumber) {
if (!txMeta.firstRetryBlockNumber) {
this.emit('tx:block-update', txMeta, latestBlockNumber)
}
if (Date.now() > txMeta.time + this.retryTimePeriod) {
const hours = (this.retryTimePeriod / 3.6e+6).toFixed(1)
const err = new Error(`Gave up submitting after ${hours} hours.`)
return this.emit('tx:failed', txMeta.id, err)
}
const firstRetryBlockNumber = txMeta.firstRetryBlockNumber
const txBlockDistance = Number.parseInt(latestBlockNumber, 16) - Number.parseInt(firstRetryBlockNumber, 16)
const retryCount = txMeta.retryCount || 0
// Exponential backoff to limit retries at publishing
if (txBlockDistance <= Math.pow(2, retryCount) - 1) return
// Only auto-submit already-signed txs:
if (!('rawTx' in txMeta)) return