1 import * as Sequelize from 'sequelize'
2 // TODO: import from ES6 when retry typing file will include errorFilter function
3 import * as retry from 'async/retry'
5 import { database as db } from '../initializers/database'
6 import { logger } from './logger'
8 function commitTransaction (t: Sequelize.Transaction, callback: (err: Error) => void) {
9 return t.commit().asCallback(callback)
12 function rollbackTransaction (err: Error, t: Sequelize.Transaction, callback: (err: Error) => void) {
13 // Try to rollback transaction
15 // Do not catch err, report the original one
16 t.rollback().asCallback(function () {
24 type RetryTransactionWrapperOptions = { errorMessage: string, arguments?: any[] }
25 function retryTransactionWrapper (functionToRetry: Function, options: RetryTransactionWrapperOptions, finalCallback: Function) {
26 const args = options.arguments ? options.arguments : []
30 return functionToRetry.apply(this, args.concat([ callback ]))
34 logger.error(options.errorMessage, { error: err })
37 // Do not return the error, continue the process
38 return finalCallback(null)
43 function transactionRetryer (func: Function, callback: (err: Error) => void) {
47 errorFilter: function (err) {
48 const willRetry = (err.name === 'SequelizeDatabaseError')
49 logger.debug('Maybe retrying the transaction function.', { willRetry })
55 function startSerializableTransaction (callback: (err: Error, t: Sequelize.Transaction) => void) {
56 db.sequelize.transaction(/* { isolationLevel: 'SERIALIZABLE' } */).asCallback(function (err, t) {
57 // We force to return only two parameters
58 return callback(err, t)
62 // ---------------------------------------------------------------------------
66 retryTransactionWrapper,
68 startSerializableTransaction,