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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include <memory>
#include <vector>
#include "mongo/db/storage/recovery_unit.h"
namespace mongo {
class OperationContext;
class RecoveryUnitNoop : public RecoveryUnit {
public:
void beginUnitOfWork(OperationContext* opCtx) final {}
virtual bool waitUntilDurable(OperationContext* opCtx) {
return true;
}
virtual void registerChange(std::unique_ptr<Change> change) {
_changes.push_back(std::move(change));
}
virtual void setOrderedCommit(bool orderedCommit) {}
bool inActiveTxn() const {
return false;
}
bool isNoop() const override {
return true;
}
private:
void doCommitUnitOfWork() final {
for (auto& change : _changes) {
try {
change->commit(boost::none);
} catch (...) {
std::terminate();
}
}
_changes.clear();
}
void doAbortUnitOfWork() final {
for (auto it = _changes.rbegin(); it != _changes.rend(); ++it) {
try {
(*it)->rollback();
} catch (...) {
std::terminate();
}
}
_changes.clear();
}
virtual void doAbandonSnapshot() {}
std::vector<std::unique_ptr<Change>> _changes;
};
} // namespace mongo
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