mirror of
https://github.com/apple/foundationdb.git
synced 2025-05-28 10:52:03 +08:00
56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
/*
|
|
* RunTransaction.actor.h
|
|
*
|
|
* This source file is part of the FoundationDB open source project
|
|
*
|
|
* Copyright 2013-2022 Apple Inc. and the FoundationDB project authors
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
// When actually compiled (NO_INTELLISENSE), include the generated version of this file. In intellisense use the source
|
|
// version.
|
|
#if defined(NO_INTELLISENSE) && !defined(FDBCLIENT_RUNTRANSACTION_ACTOR_G_H)
|
|
#define FDBCLIENT_RUNTRANSACTION_ACTOR_G_H
|
|
#include "fdbclient/RunTransaction.actor.g.h"
|
|
#elif !defined(FDBCLIENT_RUNTRANSACTION_ACTOR_H)
|
|
#define FDBCLIENT_RUNTRANSACTION_ACTOR_H
|
|
|
|
#include <utility>
|
|
|
|
#include "flow/flow.h"
|
|
#include "flow/actorcompiler.h" // This must be the last #include.
|
|
|
|
ACTOR template <class Function, class DB>
|
|
Future<decltype(std::declval<Function>()(Reference<typename DB::TransactionT>()).getValue())> runTransaction(
|
|
Reference<DB> db,
|
|
Function func) {
|
|
state Reference<typename DB::TransactionT> tr = db->createTransaction();
|
|
loop {
|
|
try {
|
|
// func should be idempotent; otherwise, retry will get undefined result
|
|
state decltype(std::declval<Function>()(Reference<typename DB::TransactionT>()).getValue()) result =
|
|
wait(func(tr));
|
|
wait(safeThreadFutureToFuture(tr->commit()));
|
|
return result;
|
|
} catch (Error& e) {
|
|
wait(safeThreadFutureToFuture(tr->onError(e)));
|
|
}
|
|
}
|
|
}
|
|
|
|
#include "flow/unactorcompiler.h"
|
|
#endif
|