1 files changed, 34 insertions, 1 deletions

diff --git a/server/helpers/utils.js b/server/helpers/utils.js
index 9f27671b6..a902850cd 100644
--- a/server/helpers/utils.js
+++ b/server/helpers/utils.js
@@ -1,13 +1,21 @@
 'use strict'
 
 const crypto = require('crypto')
+const retry = require('async/retry')
 
 const logger = require('./logger')
 
 const utils = {
+  badRequest,
   cleanForExit,
   generateRandomString,
-  isTestInstance
+  isTestInstance,
+  getFormatedObjects,
+  transactionRetryer
+}
+
+function badRequest (req, res, next) {
+  res.type('json').status(400).end()
 }
 
 function generateRandomString (size, callback) {
@@ -27,6 +35,31 @@ function isTestInstance () {
   return (process.env.NODE_ENV === 'test')
 }
 
+function getFormatedObjects (objects, objectsTotal) {
+  const formatedObjects = []
+
+  objects.forEach(function (object) {
+    formatedObjects.push(object.toFormatedJSON())
+  })
+
+  return {
+    total: objectsTotal,
+    data: formatedObjects
+  }
+}
+
+function transactionRetryer (func, callback) {
+  retry({
+    times: 5,
+
+    errorFilter: function (err) {
+      const willRetry = (err.name === 'SequelizeDatabaseError')
+      logger.debug('Maybe retrying the transaction function.', { willRetry })
+      return willRetry
+    }
+  }, func, callback)
+}
+
 // ---------------------------------------------------------------------------
 
 module.exports = utils