85 lines
2.8 KiB
C++
85 lines
2.8 KiB
C++
/*
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* RunTransaction.actor.h
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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// When actually compiled (NO_INTELLISENSE), include the generated version of this file. In intellisense use the source
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// version.
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#if defined(NO_INTELLISENSE) && !defined(FDBCLIENT_RUNTRANSACTION_ACTOR_G_H)
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#define FDBCLIENT_RUNTRANSACTION_ACTOR_G_H
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#include "fdbclient/RunTransaction.actor.g.h"
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#elif !defined(FDBCLIENT_RUNTRANSACTION_ACTOR_H)
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#define FDBCLIENT_RUNTRANSACTION_ACTOR_H
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#include <utility>
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#include "flow/flow.h"
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#include "fdbclient/ReadYourWrites.h"
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#include "flow/actorcompiler.h" // This must be the last #include.
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ACTOR template <class Function>
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Future<decltype(std::declval<Function>()(Reference<ReadYourWritesTransaction>()).getValue())> runRYWTransaction(
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Database cx,
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Function func) {
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state Reference<ReadYourWritesTransaction> tr(new ReadYourWritesTransaction(cx));
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loop {
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try {
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// func should be idempodent; otherwise, retry will get undefined result
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state decltype(std::declval<Function>()(Reference<ReadYourWritesTransaction>()).getValue()) result =
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wait(func(tr));
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wait(tr->commit());
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return result;
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} catch (Error& e) {
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wait(tr->onError(e));
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}
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}
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}
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ACTOR template <class Function>
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Future<decltype(std::declval<Function>()(Reference<ReadYourWritesTransaction>()).getValue())>
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runRYWTransactionFailIfLocked(Database cx, Function func) {
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state Reference<ReadYourWritesTransaction> tr(new ReadYourWritesTransaction(cx));
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loop {
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try {
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state decltype(std::declval<Function>()(Reference<ReadYourWritesTransaction>()).getValue()) result =
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wait(func(tr));
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wait(tr->commit());
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return result;
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} catch (Error& e) {
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if (e.code() == error_code_database_locked)
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throw;
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wait(tr->onError(e));
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}
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}
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}
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ACTOR template <class Function>
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Future<decltype(std::declval<Function>()(Reference<ReadYourWritesTransaction>()).getValue())> runRYWTransactionNoRetry(
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Database cx,
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Function func) {
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state Reference<ReadYourWritesTransaction> tr(new ReadYourWritesTransaction(cx));
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state decltype(std::declval<Function>()(Reference<ReadYourWritesTransaction>()).getValue()) result = wait(func(tr));
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wait(tr->commit());
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return result;
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}
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#include "flow/unactorcompiler.h"
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#endif
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