server/helpers/database-utils.ts

   1 // TODO: import from ES6 when retry typing file will include errorFilter function
   2 import * as retry from 'async/retry'
   3 import * as Promise from 'bluebird'
   4
   5 import { logger } from './logger'
   6
   7 type RetryTransactionWrapperOptions = { errorMessage: string, arguments?: any[] }
   8 function retryTransactionWrapper (functionToRetry: (... args) => Promise<any>, options: RetryTransactionWrapperOptions) {
   9   const args = options.arguments ? options.arguments : []
  10
  11   return transactionRetryer(
  12     function (callback) {
  13       functionToRetry.apply(this, args)
  14         .then(result => callback(null, result))
  15         .catch(err => callback(err))
  16     }
  17   )
  18   .catch(err => {
  19     // Do not throw the error, continue the process
  20     logger.error(options.errorMessage, { error: err })
  21   })
  22 }
  23
  24 function transactionRetryer (func: Function) {
  25   return new Promise((res, rej) => {
  26     retry({
  27       times: 5,
  28
  29       errorFilter: function (err) {
  30         const willRetry = (err.name === 'SequelizeDatabaseError')
  31         logger.debug('Maybe retrying the transaction function.', { willRetry })
  32         return willRetry
  33       }
  34     }, func, function (err) {
  35       err ? rej(err) : res()
  36     })
  37   })
  38 }
  39
  40 // ---------------------------------------------------------------------------
  41
  42 export {
  43   retryTransactionWrapper,
  44   transactionRetryer
  45 }