-function updateInstanceWithAnother <T extends Model<T>> (instanceToUpdate: Model<T>, baseInstance: Model<T>) {
- const obj = baseInstance.toJSON()
+function saveInTransactionWithRetries <T extends Pick<Model, 'save'>> (model: T) {
+ return retryTransactionWrapper(() => {
+ return sequelizeTypescript.transaction(async transaction => {
+ await model.save({ transaction })
+ })
+ })
+}
+
+// ---------------------------------------------------------------------------
+
+function resetSequelizeInstance <T> (instance: Model<T>) {
+ return instance.reload()
+}
+
+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())