Limit retry delay

oracle/src/services/amqpClient.js

@@ -1,6 +1,7 @@
 require('../../env')
 const connection = require('amqp-connection-manager').connect(process.env.QUEUE_URL)
 const logger = require('./logger')
+const { getRetrySequence } = require('../utils/utils')
 
 connection.on('connect', () => {
   logger.info('Connected to amqp Broker')
@@ -44,7 +45,7 @@ function connectSenderToQueue({ queueName, cb }) {
           nackMsg: job => channelWrapper.nack(job, false, true),
           scheduleForRetry: async (data, msgRetries = 0) => {
             const retries = msgRetries + 1
-            const delay = retries ** 2 * 1000
+            const delay = getRetrySequence(retries) * 1000
             const retryQueue = `${queueName}-retry-${delay}`
             await channel.assertQueue(retryQueue, {
               durable: true,

oracle/src/utils/utils.js

@@ -2,6 +2,14 @@ const BigNumber = require('bignumber.js')
 const promiseRetry = require('promise-retry')
 const Web3 = require('web3')
 
+const retrySequence = [1, 2, 3, 5, 8, 13, 21, 34, 55, 60]
+
+function getRetrySequence(count) {
+  return count > retrySequence.length
+    ? retrySequence[retrySequence.length - 1]
+    : retrySequence[count - 1]
+}
+
 async function syncForEach(array, callback) {
   for (let index = 0; index < array.length; index++) {
     await callback(array[index], index, array)
@@ -112,5 +120,6 @@ module.exports = {
   setIntervalAndRun,
   watchdog,
   privateKeyToAddress,
-  nonceError
+  nonceError,
+  getRetrySequence
 }