1 import * as retry from 'async/retry'
2 import * as Bluebird from 'bluebird'
3 import { Model } from 'sequelize-typescript'
4 import { logger } from './logger'
5 import { Transaction } from 'sequelize'
7 function retryTransactionWrapper <T, A, B, C> (
8 functionToRetry: (arg1: A, arg2: B, arg3: C) => Promise<T> | Bluebird<T>,
14 function retryTransactionWrapper <T, A, B> (
15 functionToRetry: (arg1: A, arg2: B) => Promise<T> | Bluebird<T>,
20 function retryTransactionWrapper <T, A> (
21 functionToRetry: (arg1: A) => Promise<T> | Bluebird<T>,
25 function retryTransactionWrapper <T> (
26 functionToRetry: () => Promise<T> | Bluebird<T>
29 function retryTransactionWrapper <T> (
30 functionToRetry: (...args: any[]) => Promise<T> | Bluebird<T>,
33 return transactionRetryer<T>(callback => {
34 functionToRetry.apply(null, args)
35 .then((result: T) => callback(null, result))
36 .catch(err => callback(err))
39 logger.error(`Cannot execute ${functionToRetry.name} with many retries.`, { err })
44 function transactionRetryer <T> (func: (err: any, data: T) => any) {
45 return new Promise<T>((res, rej) => {
51 const willRetry = (err.name === 'SequelizeDatabaseError')
52 logger.debug('Maybe retrying the transaction function.', { willRetry, err })
57 (err, data) => err ? rej(err) : res(data)
62 function updateInstanceWithAnother <T extends Model<T>> (instanceToUpdate: Model<T>, baseInstance: Model<T>) {
63 const obj = baseInstance.toJSON()
65 for (const key of Object.keys(obj)) {
66 instanceToUpdate[key] = obj[key]
70 function resetSequelizeInstance (instance: Model<any>, savedFields: object) {
71 Object.keys(savedFields).forEach(key => {
72 instance[key] = savedFields[key]
76 function afterCommitIfTransaction (t: Transaction, fn: Function) {
77 if (t) return t.afterCommit(() => fn())
82 function deleteNonExistingModels <T extends { hasSameUniqueKeysThan (other: T): boolean } & Model<T>> (
87 return fromDatabase.filter(f => !newModels.find(newModel => newModel.hasSameUniqueKeysThan(f)))
88 .map(f => f.destroy({ transaction: t }))
91 // ---------------------------------------------------------------------------
94 resetSequelizeInstance,
95 retryTransactionWrapper,
97 updateInstanceWithAnother,
98 afterCommitIfTransaction,
99 deleteNonExistingModels