150 lines
4.2 KiB
TypeScript
150 lines
4.2 KiB
TypeScript
import * as retry from 'async/retry'
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import * as Bluebird from 'bluebird'
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import { BindOrReplacements, QueryTypes, Transaction } from 'sequelize'
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import { Model } from 'sequelize-typescript'
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import { sequelizeTypescript } from '@server/initializers/database'
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import { logger } from './logger'
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function retryTransactionWrapper <T, A, B, C, D> (
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functionToRetry: (arg1: A, arg2: B, arg3: C, arg4: D) => Promise<T>,
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arg1: A,
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arg2: B,
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arg3: C,
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arg4: D,
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): Promise<T>
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function retryTransactionWrapper <T, A, B, C> (
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functionToRetry: (arg1: A, arg2: B, arg3: C) => Promise<T>,
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arg1: A,
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arg2: B,
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arg3: C
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): Promise<T>
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function retryTransactionWrapper <T, A, B> (
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functionToRetry: (arg1: A, arg2: B) => Promise<T>,
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arg1: A,
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arg2: B
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): Promise<T>
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function retryTransactionWrapper <T, A> (
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functionToRetry: (arg1: A) => Promise<T>,
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arg1: A
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): Promise<T>
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function retryTransactionWrapper <T> (
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functionToRetry: () => Promise<T> | Bluebird<T>
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): Promise<T>
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function retryTransactionWrapper <T> (
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functionToRetry: (...args: any[]) => Promise<T>,
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...args: any[]
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): Promise<T> {
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return transactionRetryer<T>(callback => {
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functionToRetry.apply(null, args)
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.then((result: T) => callback(null, result))
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.catch(err => callback(err))
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})
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.catch(err => {
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logger.error(`Cannot execute ${functionToRetry.name} with many retries.`, { err })
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throw err
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})
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}
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function transactionRetryer <T> (func: (err: any, data: T) => any) {
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return new Promise<T>((res, rej) => {
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retry(
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{
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times: 5,
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errorFilter: err => {
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const willRetry = (err.name === 'SequelizeDatabaseError')
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logger.debug('Maybe retrying the transaction function.', { willRetry, err, tags: [ 'sql', 'retry' ] })
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return willRetry
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}
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},
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func,
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(err, data) => err ? rej(err) : res(data)
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)
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})
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}
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// ---------------------------------------------------------------------------
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function updateInstanceWithAnother <M, T extends U, U extends Model<M>> (instanceToUpdate: T, baseInstance: U) {
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const obj = baseInstance.toJSON()
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for (const key of Object.keys(obj)) {
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instanceToUpdate[key] = obj[key]
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}
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}
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function resetSequelizeInstance (instance: Model<any>, savedFields: object) {
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Object.keys(savedFields).forEach(key => {
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instance[key] = savedFields[key]
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})
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}
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function filterNonExistingModels <T extends { hasSameUniqueKeysThan (other: T): boolean }> (
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fromDatabase: T[],
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newModels: T[]
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) {
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return fromDatabase.filter(f => !newModels.find(newModel => newModel.hasSameUniqueKeysThan(f)))
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}
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function deleteAllModels <T extends Pick<Model, 'destroy'>> (models: T[], transaction: Transaction) {
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return Promise.all(models.map(f => f.destroy({ transaction })))
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}
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// Sequelize always skip the update if we only update updatedAt field
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function setAsUpdated (table: string, id: number, transaction?: Transaction) {
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return sequelizeTypescript.query(
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`UPDATE "${table}" SET "updatedAt" = :updatedAt WHERE id = :id`,
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{
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replacements: { table, id, updatedAt: new Date() },
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type: QueryTypes.UPDATE,
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transaction
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}
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)
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}
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// ---------------------------------------------------------------------------
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function runInReadCommittedTransaction <T> (fn: (t: Transaction) => Promise<T>) {
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const options = { isolationLevel: Transaction.ISOLATION_LEVELS.READ_COMMITTED }
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return sequelizeTypescript.transaction(options, t => fn(t))
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}
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function afterCommitIfTransaction (t: Transaction, fn: Function) {
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if (t) return t.afterCommit(() => fn())
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return fn()
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}
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// ---------------------------------------------------------------------------
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function doesExist (query: string, bind?: BindOrReplacements) {
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const options = {
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type: QueryTypes.SELECT as QueryTypes.SELECT,
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bind,
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raw: true
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}
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return sequelizeTypescript.query(query, options)
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.then(results => results.length === 1)
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}
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// ---------------------------------------------------------------------------
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export {
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resetSequelizeInstance,
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retryTransactionWrapper,
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transactionRetryer,
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updateInstanceWithAnother,
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afterCommitIfTransaction,
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filterNonExistingModels,
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deleteAllModels,
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setAsUpdated,
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runInReadCommittedTransaction,
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doesExist
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}
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