-// TODO: import from ES6 when retry typing file will include errorFilter function
import * as retry from 'async/retry'
-
-import { database as db } from '../initializers/database'
+import * as Bluebird from 'bluebird'
+import { Model } from 'sequelize-typescript'
import { logger } from './logger'
+import { Transaction } from 'sequelize'
+
+function retryTransactionWrapper <T, A, B, C> (
+ functionToRetry: (arg1: A, arg2: B, arg3: C) => Promise<T> | Bluebird<T>,
+ arg1: A,
+ arg2: B,
+ arg3: C
+): Promise<T>
+
+function retryTransactionWrapper <T, A, B> (
+ functionToRetry: (arg1: A, arg2: B) => Promise<T> | Bluebird<T>,
+ arg1: A,
+ arg2: B
+): Promise<T>
+
+function retryTransactionWrapper <T, A> (
+ functionToRetry: (arg1: A) => Promise<T> | Bluebird<T>,
+ arg1: A
+): Promise<T>
-function commitTransaction (t, callback) {
- return t.commit().asCallback(callback)
+function retryTransactionWrapper <T> (
+ functionToRetry: () => Promise<T> | Bluebird<T>
+): Promise<T>
+
+function retryTransactionWrapper <T> (
+ functionToRetry: (...args: any[]) => Promise<T> | Bluebird<T>,
+ ...args: any[]
+): Promise<T> {
+ return transactionRetryer<T>(callback => {
+ functionToRetry.apply(null, args)
+ .then((result: T) => callback(null, result))
+ .catch(err => callback(err))
+ })
+ .catch(err => {
+ logger.error(`Cannot execute ${functionToRetry.name} with many retries.`, { err })
+ throw err
+ })
}
-function rollbackTransaction (err, t, callback) {
- // Try to rollback transaction
- if (t) {
- // Do not catch err, report the original one
- t.rollback().asCallback(function () {
- return callback(err)
- })
- } else {
- return callback(err)
- }
+function transactionRetryer <T> (func: (err: any, data: T) => any) {
+ return new Promise<T>((res, rej) => {
+ retry(
+ {
+ times: 5,
+
+ errorFilter: err => {
+ const willRetry = (err.name === 'SequelizeDatabaseError')
+ logger.debug('Maybe retrying the transaction function.', { willRetry, err })
+ return willRetry
+ }
+ },
+ func,
+ (err, data) => err ? rej(err) : res(data)
+ )
+ })
}
-// { arguments, errorMessage }
-function retryTransactionWrapper (functionToRetry, options, finalCallback) {
- const args = options.arguments ? options.arguments : []
+function updateInstanceWithAnother <T extends Model<T>> (instanceToUpdate: Model<T>, baseInstance: Model<T>) {
+ const obj = baseInstance.toJSON()
- transactionRetryer(
- function (callback) {
- return functionToRetry.apply(this, args.concat([ callback ]))
- },
- function (err) {
- if (err) {
- logger.error(options.errorMessage, { error: err })
- }
+ for (const key of Object.keys(obj)) {
+ instanceToUpdate[key] = obj[key]
+ }
+}
- // Do not return the error, continue the process
- return finalCallback(null)
- }
- )
+function resetSequelizeInstance (instance: Model<any>, savedFields: object) {
+ Object.keys(savedFields).forEach(key => {
+ instance[key] = savedFields[key]
+ })
}
-function transactionRetryer (func, callback) {
- retry({
- times: 5,
+function afterCommitIfTransaction (t: Transaction, fn: Function) {
+ if (t) return t.afterCommit(() => fn())
- errorFilter: function (err) {
- const willRetry = (err.name === 'SequelizeDatabaseError')
- logger.debug('Maybe retrying the transaction function.', { willRetry })
- return willRetry
- }
- }, func, callback)
+ return fn()
}
-function startSerializableTransaction (callback) {
- db.sequelize.transaction(/* { isolationLevel: 'SERIALIZABLE' } */).asCallback(function (err, t) {
- // We force to return only two parameters
- return callback(err, t)
- })
+function deleteNonExistingModels <T extends { hasSameUniqueKeysThan (other: T): boolean } & Model<T>> (
+ fromDatabase: T[],
+ newModels: T[],
+ t: Transaction
+) {
+ return fromDatabase.filter(f => !newModels.find(newModel => newModel.hasSameUniqueKeysThan(f)))
+ .map(f => f.destroy({ transaction: t }))
}
// ---------------------------------------------------------------------------
export {
- commitTransaction,
+ resetSequelizeInstance,
retryTransactionWrapper,
- rollbackTransaction,
- startSerializableTransaction,
- transactionRetryer
+ transactionRetryer,
+ updateInstanceWithAnother,
+ afterCommitIfTransaction,
+ deleteNonExistingModels
}