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controllers - transactions - pending-tx-tracker - _getBlock - poll until block is truthy

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This commit is contained in:
kumavis 2018-05-25 13:30:26 -07:00
parent 61ef4f1f29
commit 9f8d5f0547
1 changed files with 10 additions and 1 deletions
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11
app/scripts/controllers/transactions/pending-tx-tracker.js
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@ -1,6 +1,7 @@
const EventEmitter = require('events')
const log = require('loglevel')
const EthQuery = require('ethjs-query')
const timeout = (duration) => new Promise(resolve => setTimeout(resolve, duration))
/**
Event emitter utility class for tracking the transactions as they<br>
@ -212,7 +213,15 @@ class PendingTransactionTracker extends EventEmitter {
}
async _getBlock (blockNumber) {
return await this.query.getBlockByNumber(blockNumber, false)
let block
while (!block) {
// block requests will sometimes return null due do the infura api
// being backed by multiple out-of-sync clients
block = await this.query.getBlockByNumber(blockNumber, false)
// if block is null, wait 1 sec then try again
if (!block) await timeout(1000)
}
return block
}
/**