server/helpers/database-utils.ts

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