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/**
* Copyright (C) 2014 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 <vector>
#include "mongo/base/disallow_copying.h"
#include "mongo/base/status_with.h"
#include "mongo/bson/oid.h"
#include "mongo/bson/timestamp.h"
#include "mongo/db/jsobj.h"
#include "mongo/db/repl/last_vote.h"
#include "mongo/db/repl/replication_coordinator_external_state.h"
#include "mongo/stdx/condition_variable.h"
#include "mongo/stdx/mutex.h"
#include "mongo/stdx/thread.h"
#include "mongo/util/net/hostandport.h"
namespace mongo {
class ServiceContext;
namespace repl {
class ReplicationCoordinatorExternalStateMock : public ReplicationCoordinatorExternalState {
MONGO_DISALLOW_COPYING(ReplicationCoordinatorExternalStateMock);
public:
class GlobalSharedLockAcquirer;
ReplicationCoordinatorExternalStateMock();
virtual ~ReplicationCoordinatorExternalStateMock();
virtual void startThreads(const ReplSettings& settings) override;
virtual void startInitialSync(OnInitialSyncFinishedFn finished) override;
virtual void startSteadyStateReplication() override;
virtual void startMasterSlave(OperationContext*);
virtual void shutdown(OperationContext* txn);
virtual Status initializeReplSetStorage(OperationContext* txn, const BSONObj& config);
virtual void logTransitionToPrimaryToOplog(OperationContext* txn);
virtual void forwardSlaveProgress();
virtual OID ensureMe(OperationContext*);
virtual bool isSelf(const HostAndPort& host, ServiceContext* ctx);
virtual HostAndPort getClientHostAndPort(const OperationContext* txn);
virtual StatusWith<BSONObj> loadLocalConfigDocument(OperationContext* txn);
virtual Status storeLocalConfigDocument(OperationContext* txn, const BSONObj& config);
virtual StatusWith<LastVote> loadLocalLastVoteDocument(OperationContext* txn);
virtual Status storeLocalLastVoteDocument(OperationContext* txn, const LastVote& lastVote);
virtual void setGlobalTimestamp(const Timestamp& newTime);
virtual StatusWith<OpTime> loadLastOpTime(OperationContext* txn);
virtual void cleanUpLastApplyBatch(OperationContext* txn);
virtual void closeConnections();
virtual void killAllUserOperations(OperationContext* txn);
virtual void shardingOnStepDownHook();
virtual void shardingOnDrainingStateHook(OperationContext* txn);
virtual void signalApplierToChooseNewSyncSource();
virtual void signalApplierToCancelFetcher();
virtual void dropAllTempCollections(OperationContext* txn);
virtual void dropAllSnapshots();
virtual void updateCommittedSnapshot(SnapshotName newCommitPoint);
virtual void forceSnapshotCreation();
virtual bool snapshotsEnabled() const;
virtual void notifyOplogMetadataWaiters();
virtual double getElectionTimeoutOffsetLimitFraction() const;
virtual bool isReadCommittedSupportedByStorageEngine(OperationContext* txn) const;
virtual StatusWith<OpTime> multiApply(OperationContext* txn,
const MultiApplier::Operations& ops,
MultiApplier::ApplyOperationFn applyOperation) override;
virtual void multiSyncApply(const MultiApplier::Operations& ops) override;
virtual void multiInitialSyncApply(const MultiApplier::Operations& ops,
const HostAndPort& source) override;
virtual std::unique_ptr<OplogBuffer> makeInitialSyncOplogBuffer() const override;
virtual std::unique_ptr<OplogBuffer> makeSteadyStateOplogBuffer() const override;
virtual bool shouldUseDataReplicatorInitialSync() const override;
/**
* Adds "host" to the list of hosts that this mock will match when responding to "isSelf"
* messages.
*/
void addSelf(const HostAndPort& host);
/**
* Sets the return value for subsequent calls to loadLocalConfigDocument().
*/
void setLocalConfigDocument(const StatusWith<BSONObj>& localConfigDocument);
/**
* Sets the return value for subsequent calls to loadLocalLastVoteDocument().
*/
void setLocalLastVoteDocument(const StatusWith<LastVote>& localLastVoteDocument);
/**
* Sets the return value for subsequent calls to getClientHostAndPort().
*/
void setClientHostAndPort(const HostAndPort& clientHostAndPort);
/**
* Sets the return value for subsequent calls to loadLastOpTimeApplied.
*/
void setLastOpTime(const StatusWith<OpTime>& lastApplied);
/**
* Sets the return value for subsequent calls to storeLocalConfigDocument().
* If "status" is Status::OK(), the subsequent calls will call the underlying funtion.
*/
void setStoreLocalConfigDocumentStatus(Status status);
/**
* Sets whether or not subsequent calls to storeLocalConfigDocument() should hang
* indefinitely or not based on the value of "hang".
*/
void setStoreLocalConfigDocumentToHang(bool hang);
/**
* Sets the return value for subsequent calls to storeLocalLastVoteDocument().
* If "status" is Status::OK(), the subsequent calls will call the underlying funtion.
*/
void setStoreLocalLastVoteDocumentStatus(Status status);
/**
* Sets whether or not subsequent calls to storeLocalLastVoteDocument() should hang
* indefinitely or not based on the value of "hang".
*/
void setStoreLocalLastVoteDocumentToHang(bool hang);
/**
* Returns true if applier was signaled to cancel fetcher.
*/
bool isApplierSignaledToCancelFetcher() const;
/**
* Returns true if startThreads() has been called.
*/
bool threadsStarted() const;
/**
* Sets if the storage engine is configured to support ReadConcern::Majority (committed point).
*/
void setIsReadCommittedEnabled(bool val);
/**
* Sets if we are taking snapshots for read concern majority use.
*/
void setAreSnapshotsEnabled(bool val);
private:
StatusWith<BSONObj> _localRsConfigDocument;
StatusWith<LastVote> _localRsLastVoteDocument;
StatusWith<OpTime> _lastOpTime;
std::vector<HostAndPort> _selfHosts;
bool _canAcquireGlobalSharedLock;
Status _storeLocalConfigDocumentStatus;
Status _storeLocalLastVoteDocumentStatus;
// mutex and cond var for controlling stroeLocalConfigDocument()'s hanging
stdx::mutex _shouldHangConfigMutex;
stdx::condition_variable _shouldHangConfigCondVar;
// mutex and cond var for controlling stroeLocalLastVoteDocument()'s hanging
stdx::mutex _shouldHangLastVoteMutex;
stdx::condition_variable _shouldHangLastVoteCondVar;
bool _storeLocalConfigDocumentShouldHang;
bool _storeLocalLastVoteDocumentShouldHang;
bool _isApplierSignaledToCancelFetcher;
bool _connectionsClosed;
HostAndPort _clientHostAndPort;
bool _threadsStarted;
bool _isReadCommittedSupported = true;
bool _areSnapshotsEnabled = true;
};
} // namespace repl
} // namespace mongo
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