Fix retrying update on sql serialization conflict

[github/Chocobozzz/PeerTube.git] / server / helpers / database-utils.ts

diff --git a/server/helpers/database-utils.ts b/server/helpers/database-utils.ts
index 78ca768b91d491b870753f34da724afd41a91ae9..0e6b3550371e721624652166ea03d2435538b5c6 100644 (file)
--- a/server/helpers/database-utils.ts
+++ b/server/helpers/database-utils.ts
@@ -1,52 +1,121 @@
-import * as retry from 'async/retry'
-import * as Bluebird from 'bluebird'
+import retry from 'async/retry'
+import Bluebird from 'bluebird'
+import { Transaction } from 'sequelize'
 import { Model } from 'sequelize-typescript'
+import { sequelizeTypescript } from '@server/initializers/database'
 import { logger } from './logger'
 
-type RetryTransactionWrapperOptions = { errorMessage: string, arguments?: any[] }
+function retryTransactionWrapper <T, A, B, C, D> (
+  functionToRetry: (arg1: A, arg2: B, arg3: C, arg4: D) => Promise<T>,
+  arg1: A,
+  arg2: B,
+  arg3: C,
+  arg4: D,
+): Promise<T>
+
+function retryTransactionWrapper <T, A, B, C> (
+  functionToRetry: (arg1: A, arg2: B, arg3: C) => Promise<T>,
+  arg1: A,
+  arg2: B,
+  arg3: C
+): Promise<T>
+
+function retryTransactionWrapper <T, A, B> (
+  functionToRetry: (arg1: A, arg2: B) => Promise<T>,
+  arg1: A,
+  arg2: B
+): Promise<T>
+
+function retryTransactionWrapper <T, A> (
+  functionToRetry: (arg1: A) => Promise<T>,
+  arg1: A
+): Promise<T>
+
 function retryTransactionWrapper <T> (
-  functionToRetry: (...args) => Promise<T> | Bluebird<T>,
-  options: RetryTransactionWrapperOptions
-): Promise<T> {
-  const args = options.arguments ? options.arguments : []
+  functionToRetry: () => Promise<T> | Bluebird<T>
+): Promise<T>
 
+function retryTransactionWrapper <T> (
+  functionToRetry: (...args: any[]) => Promise<T>,
+  ...args: any[]
+): Promise<T> {
   return transactionRetryer<T>(callback => {
-    functionToRetry.apply(this, args)
+    functionToRetry.apply(null, args)
         .then((result: T) => callback(null, result))
         .catch(err => callback(err))
   })
   .catch(err => {
-    logger.error(options.errorMessage, err)
+    logger.warn(`Cannot execute ${functionToRetry.name} with many retries.`, { err })
     throw 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 })
-        return willRetry
-      }
-    }, func, (err, data) => err ? rej(err) : res(data))
+    retry(
+      {
+        times: 5,
+
+        errorFilter: err => {
+          const willRetry = (err.name === 'SequelizeDatabaseError')
+          logger.debug('Maybe retrying the transaction function.', { willRetry, err, tags: [ 'sql', 'retry' ] })
+          return willRetry
+        }
+      },
+      func,
+      (err, data) => err ? rej(err) : res(data)
+    )
   })
 }
 
-function updateInstanceWithAnother <T> (instanceToUpdate: Model<T>, baseInstance: Model<T>) {
+// ---------------------------------------------------------------------------
+
+function updateInstanceWithAnother <M, T extends U, U extends Model<M>> (instanceToUpdate: T, baseInstance: U) {
   const obj = baseInstance.toJSON()
 
   for (const key of Object.keys(obj)) {
-    instanceToUpdate.set(key, obj[key])
+    instanceToUpdate[key] = obj[key]
   }
 }
 
+function resetSequelizeInstance <T> (instance: Model<T>) {
+  instance.set(instance.previous())
+}
+
+function filterNonExistingModels <T extends { hasSameUniqueKeysThan (other: T): boolean }> (
+  fromDatabase: T[],
+  newModels: T[]
+) {
+  return fromDatabase.filter(f => !newModels.find(newModel => newModel.hasSameUniqueKeysThan(f)))
+}
+
+function deleteAllModels <T extends Pick<Model, 'destroy'>> (models: T[], transaction: Transaction) {
+  return Promise.all(models.map(f => f.destroy({ transaction })))
+}
+
+// ---------------------------------------------------------------------------
+
+function runInReadCommittedTransaction <T> (fn: (t: Transaction) => Promise<T>) {
+  const options = { isolationLevel: Transaction.ISOLATION_LEVELS.READ_COMMITTED }
+
+  return sequelizeTypescript.transaction(options, t => fn(t))
+}
+
+function afterCommitIfTransaction (t: Transaction, fn: Function) {
+  if (t) return t.afterCommit(() => fn())
+
+  return fn()
+}
+
 // ---------------------------------------------------------------------------
 
 export {
+  resetSequelizeInstance,
   retryTransactionWrapper,
   transactionRetryer,
-  updateInstanceWithAnother
+  updateInstanceWithAnother,
+  afterCommitIfTransaction,
+  filterNonExistingModels,
+  deleteAllModels,
+  runInReadCommittedTransaction
 }