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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 <cstdint>
#include <functional>
#include <initializer_list>
#include <memory>
#include "mongo/db/jsobj.h"
#include "mongo/db/operation_context_noop.h"
#include "mongo/db/record_id.h"
#include "mongo/db/service_context.h"
#include "mongo/db/service_context_test_fixture.h"
#include "mongo/db/storage/sorted_data_interface.h"
namespace mongo {
/**
* Sets up an OperationContext with a Recovery Unit. Uses a ServiceContextNoop.
*
* A particular HarnessHelper implementation will implement registerXXXHarnessHelperFactory() and
* newXXXHarnessHelper() such that generic unit tests can create and test that particular
* HarnessHelper implementation. The newRecoveryUnit() implementation dictates what RecoveryUnit
* implementation the OperationContext has.
*/
class HarnessHelper : public ScopedGlobalServiceContextForTest {
public:
virtual ~HarnessHelper() = default;
explicit HarnessHelper() : _threadClient(getGlobalServiceContext()) {}
virtual ServiceContext::UniqueOperationContext newOperationContext(Client* const client) {
auto opCtx = client->makeOperationContext();
opCtx->setRecoveryUnit(newRecoveryUnit(),
WriteUnitOfWork::RecoveryUnitState::kNotInUnitOfWork);
return opCtx;
}
virtual ServiceContext::UniqueOperationContext newOperationContext() {
return newOperationContext(client());
}
Client* client() const {
return Client::getCurrent();
}
ServiceContext* serviceContext() {
return getGlobalServiceContext();
}
const ServiceContext* serviceContext() const {
return getGlobalServiceContext();
}
virtual std::unique_ptr<RecoveryUnit> newRecoveryUnit() = 0;
protected:
ThreadClient _threadClient;
};
namespace harness_helper_detail {
template <typename Target, typename Current>
std::unique_ptr<Target> noexcept_ptr_conversion(std::unique_ptr<Current>&& p, Target& t) noexcept {
p.release();
return std::unique_ptr<Target>(std::addressof(t));
}
} // namespace harness_helper_detail
template <typename Target, typename Current>
std::unique_ptr<Target> dynamic_ptr_cast(std::unique_ptr<Current>&& p) {
if (!p) {
throw std::runtime_error("Must not be null.");
}
Target& target = dynamic_cast<Target&>(*p);
return harness_helper_detail::noexcept_ptr_conversion(std::move(p), target);
}
} // namespace mongo
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