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/**
* Copyright (C) 2017 MongoDB Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* 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 GNU Affero General 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 "mongo/db/repl/replication_coordinator_mock.h"
#include "mongo/db/repl/storage_interface_mock.h"
#include "mongo/db/service_context.h"
#include "mongo/db/service_context_d_test_fixture.h"
#include "mongo/executor/thread_pool_task_executor_test_fixture.h"
namespace mongo {
namespace repl {
/**
* Test fixture for both 3.4 and 3.6 rollback unit tests.
* The fixture makes available to tests:
* - an "ephemeralForTest" storage engine for checking results of the rollback algorithm at the
* storage layer. The storage engine is initialized as part of the ServiceContextForMongoD test
* fixture.
* - a task executor for simulating remote command responses from the sync source. The
* ThreadPoolExecutorTest is used to initialize the task executor.
*/
class RollbackTest : public unittest::Test {
public:
/**
* Initializes executor::ThreadPoolExecutorTest so that each thread is initialized with a
* Client.
*/
RollbackTest();
/**
* Initializes the service context and task executor.
*/
void setUp() override;
/**
* Destroys the service context and task executor.
*
* Note on overriding tearDown() in tests:
* Tests should explicitly shut down and join the task executor (by invoking
* TaskExecutorTest::shutdownExecutorThread() and TaskExecutorTest::joinExecutorThread()
* respectively) before calling RollbackTest::tearDown().
* This cancels outstanding tasks and remote command requests scheduled using the task
* executor.
*/
void tearDown() override;
protected:
// Test fixture used to manage the service context and global storage engine.
ServiceContextMongoDTest _serviceContextMongoDTest;
// Test fixture used to manage the task executor.
executor::ThreadPoolExecutorTest _threadPoolExecutorTest;
// OperationContext provided to test cases for storage layer operations.
ServiceContext::UniqueOperationContext _opCtx;
// ReplicationCoordinator mock implementation for rollback tests.
// Owned by service context.
class ReplicationCoordinatorRollbackMock;
ReplicationCoordinatorRollbackMock* _coordinator = nullptr;
// StorageInterface used to access minValid.
StorageInterfaceMock _storageInterface;
};
/**
* ReplicationCoordinator mock implementation for rollback tests.
*/
class RollbackTest::ReplicationCoordinatorRollbackMock : public ReplicationCoordinatorMock {
public:
ReplicationCoordinatorRollbackMock(ServiceContext* service);
/**
* Base class implementation triggers an invariant. This function is overridden to be a no-op
* for rollback tests.
*/
void resetLastOpTimesFromOplog(OperationContext* opCtx) override;
/**
* Returns false (does not forward call to ReplicationCoordinatorMock::setFollowerMode())
* if new state requested is '_failSetFollowerModeOnThisMemberState'.
* Otherwise, calls ReplicationCoordinatorMock::setFollowerMode().
*/
bool setFollowerMode(const MemberState& newState) override;
// Override this to make setFollowerMode() fail when called with this state.
MemberState _failSetFollowerModeOnThisMemberState = MemberState::RS_UNKNOWN;
};
} // namespace repl
} // namespace mongo
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