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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 <vector>
#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/oplog_applier_impl.h"
#include "mongo/db/repl/replication_coordinator_external_state.h"
#include "mongo/platform/condition_variable.h"
#include "mongo/platform/mutex.h"
#include "mongo/stdx/thread.h"
#include "mongo/util/net/hostandport.h"
namespace mongo {
class ServiceContext;
namespace repl {
class ReplicationCoordinatorExternalStateMock : public ReplicationCoordinatorExternalState {
ReplicationCoordinatorExternalStateMock(const ReplicationCoordinatorExternalStateMock&) =
delete;
ReplicationCoordinatorExternalStateMock& operator=(
const ReplicationCoordinatorExternalStateMock&) = delete;
public:
class GlobalSharedLockAcquirer;
ReplicationCoordinatorExternalStateMock();
virtual ~ReplicationCoordinatorExternalStateMock();
virtual void startThreads(const ReplSettings& settings) override;
virtual void startSteadyStateReplication(OperationContext* opCtx,
ReplicationCoordinator* replCoord) override;
virtual void stopDataReplication(OperationContext* opCtx) override;
virtual bool isInitialSyncFlagSet(OperationContext* opCtx) override;
virtual void shutdown(OperationContext* opCtx);
virtual executor::TaskExecutor* getTaskExecutor() const override;
virtual ThreadPool* getDbWorkThreadPool() const override;
virtual Status initializeReplSetStorage(OperationContext* opCtx, const BSONObj& config);
void onDrainComplete(OperationContext* opCtx) override;
OpTime onTransitionToPrimary(OperationContext* opCtx) override;
virtual void forwardSlaveProgress();
virtual bool isSelf(const HostAndPort& host, ServiceContext* service);
virtual HostAndPort getClientHostAndPort(const OperationContext* opCtx);
virtual StatusWith<BSONObj> loadLocalConfigDocument(OperationContext* opCtx);
virtual Status storeLocalConfigDocument(OperationContext* opCtx, const BSONObj& config);
virtual StatusWith<LastVote> loadLocalLastVoteDocument(OperationContext* opCtx);
virtual Status storeLocalLastVoteDocument(OperationContext* opCtx, const LastVote& lastVote);
virtual void setGlobalTimestamp(ServiceContext* service, const Timestamp& newTime);
virtual Timestamp getGlobalTimestamp(ServiceContext* service);
bool oplogExists(OperationContext* opCtx) override;
virtual StatusWith<OpTimeAndWallTime> loadLastOpTimeAndWallTime(OperationContext* opCtx);
virtual void closeConnections();
virtual void shardingOnStepDownHook();
virtual void signalApplierToChooseNewSyncSource();
virtual void stopProducer();
virtual void startProducerIfStopped();
virtual bool tooStale();
virtual void dropAllSnapshots();
virtual void updateCommittedSnapshot(const OpTime& newCommitPoint);
virtual void updateLocalSnapshot(const OpTime& optime);
virtual bool snapshotsEnabled() const;
virtual void notifyOplogMetadataWaiters(const OpTime& committedOpTime);
boost::optional<OpTime> getEarliestDropPendingOpTime() const final;
virtual double getElectionTimeoutOffsetLimitFraction() const;
virtual bool isReadCommittedSupportedByStorageEngine(OperationContext* opCtx) const;
virtual bool isReadConcernSnapshotSupportedByStorageEngine(OperationContext* opCtx) const;
virtual std::size_t getOplogFetcherSteadyStateMaxFetcherRestarts() const override;
virtual std::size_t getOplogFetcherInitialSyncMaxFetcherRestarts() const override;
virtual OplogApplier::ApplierState getApplierState() const override;
virtual void setApplierState(const OplogApplier::ApplierState st) 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);
/**
* Initializes the return value for subsequent calls to loadLocalLastVoteDocument().
*/
Status createLocalLastVoteCollection(OperationContext* opCtx) final;
/**
* 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 setLastOpTimeAndWallTime(const StatusWith<OpTime>& lastApplied,
Date_t lastAppliedWall = Date_t());
/**
* 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 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);
void setFirstOpTimeOfMyTerm(const OpTime& opTime);
/**
* 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);
/**
* Sets the election timeout offset limit. Default is 0.15.
*/
void setElectionTimeoutOffsetLimitFraction(double val);
/**
* Noop
*/
virtual void setupNoopWriter(Seconds waitTime);
/**
* Noop
*/
virtual void startNoopWriter(OpTime lastKnownOpTime);
/**
* Noop
*/
virtual void stopNoopWriter();
private:
StatusWith<BSONObj> _localRsConfigDocument;
StatusWith<LastVote> _localRsLastVoteDocument;
StatusWith<OpTime> _lastOpTime;
StatusWith<Date_t> _lastWallTime;
std::vector<HostAndPort> _selfHosts;
bool _canAcquireGlobalSharedLock;
Status _storeLocalConfigDocumentStatus;
Status _storeLocalLastVoteDocumentStatus;
// mutex and cond var for controlling stroeLocalLastVoteDocument()'s hanging
Mutex _shouldHangLastVoteMutex =
MONGO_MAKE_LATCH("ReplicationCoordinatorExternalStateMock::_shouldHangLastVoteMutex");
stdx::condition_variable _shouldHangLastVoteCondVar;
bool _storeLocalLastVoteDocumentShouldHang;
bool _connectionsClosed;
HostAndPort _clientHostAndPort;
bool _threadsStarted;
bool _isReadCommittedSupported = true;
bool _areSnapshotsEnabled = true;
OpTime _firstOpTimeOfMyTerm;
double _electionTimeoutOffsetLimitFraction = 0.15;
Timestamp _globalTimestamp;
std::unique_ptr<OplogApplier> _oplogApplier;
};
} // namespace repl
} // namespace mongo
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