X-Git-Url: https://git.immae.eu/?a=blobdiff_plain;f=server%2Fhelpers%2Fdatabase-utils.ts;h=87f10f913ca37f3512ce5b139f55065485afceb1;hb=f2eb23cd87cf32b8fe545178143b5f49e06a58da;hp=39c74b2fdec9d87e791abb3de9be7b44dbc19083;hpb=97567dd81f508dd6295ac4d73d849aa2ce0a6549;p=github%2FChocobozzz%2FPeerTube.git

diff --git a/server/helpers/database-utils.ts b/server/helpers/database-utils.ts
index 39c74b2fd..87f10f913 100644
--- a/server/helpers/database-utils.ts
+++ b/server/helpers/database-utils.ts
@@ -2,6 +2,7 @@ import * as retry from 'async/retry'
 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>,
@@ -72,11 +73,28 @@ function resetSequelizeInstance (instance: Model<any>, savedFields: object) {
   })
 }
 
+function afterCommitIfTransaction (t: Transaction, fn: Function) {
+  if (t) return t.afterCommit(() => fn())
+
+  return fn()
+}
+
+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 {
   resetSequelizeInstance,
   retryTransactionWrapper,
   transactionRetryer,
-  updateInstanceWithAnother
+  updateInstanceWithAnother,
+  afterCommitIfTransaction,
+  deleteNonExistingModels
 }