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(callback => {
  12     functionToRetry.apply(this, args)
  13         .then(result => callback(null, result))
  14         .catch(err => callback(err))
  15   })
  16   .catch(err => {
  17     // Do not throw the error, continue the process
  18     logger.error(options.errorMessage, err)
  19   })
  20 }
  21
  22 function transactionRetryer (func: Function) {
  23   return new Promise((res, rej) => {
  24     retry({
  25       times: 5,
  26
  27       errorFilter: err => {
  28         const willRetry = (err.name === 'SequelizeDatabaseError')
  29         logger.debug('Maybe retrying the transaction function.', { willRetry })
  30         return willRetry
  31       }
  32     }, func, err => err ? rej(err) : res())
  33   })
  34 }
  35
  36 // ---------------------------------------------------------------------------
  37
  38 export {
  39   retryTransactionWrapper,
  40   transactionRetryer
  41 }