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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 "mongo/base/status.h"
#include "mongo/db/repl/optime.h"
#include "mongo/db/repl/repl_set_config.h"
#include "mongo/db/repl/replication_coordinator.h"
#include "mongo/db/repl/storage_interface.h"
#include "mongo/platform/atomic_word.h"
#include "mongo/stdx/functional.h"
namespace mongo {
namespace executor {
struct ConnectionPoolStats;
} // namespace executor
namespace repl {
/**
* A mock ReplicationCoordinator. Currently it is extremely simple and exists solely to link
* into dbtests.
*/
class ReplicationCoordinatorMock : public ReplicationCoordinator {
ReplicationCoordinatorMock(const ReplicationCoordinatorMock&) = delete;
ReplicationCoordinatorMock& operator=(const ReplicationCoordinatorMock&) = delete;
public:
ReplicationCoordinatorMock(ServiceContext* service, const ReplSettings& settings);
ReplicationCoordinatorMock(ServiceContext* service, StorageInterface* storage);
/**
* Creates a ReplicationCoordinatorMock with ReplSettings for a one-node replica set.
*/
explicit ReplicationCoordinatorMock(ServiceContext* service);
virtual ~ReplicationCoordinatorMock();
virtual void startup(OperationContext* opCtx);
virtual void enterTerminalShutdown();
virtual void shutdown(OperationContext* opCtx);
virtual void appendDiagnosticBSON(BSONObjBuilder* bob) override {}
virtual const ReplSettings& getSettings() const;
virtual bool isReplEnabled() const;
virtual Mode getReplicationMode() const;
virtual MemberState getMemberState() const;
virtual bool canAcceptNonLocalWrites() const;
virtual Status waitForMemberState(MemberState expectedState, Milliseconds timeout) override;
virtual bool isInPrimaryOrSecondaryState(OperationContext* opCtx) const;
virtual bool isInPrimaryOrSecondaryState_UNSAFE() const;
virtual Seconds getSlaveDelaySecs() const;
virtual void clearSyncSourceBlacklist();
virtual ReplicationCoordinator::StatusAndDuration awaitReplication(
OperationContext* opCtx, const OpTime& opTime, const WriteConcernOptions& writeConcern);
void stepDown(OperationContext* opCtx,
bool force,
const Milliseconds& waitTime,
const Milliseconds& stepdownTime) override;
virtual bool isMasterForReportingPurposes();
virtual bool canAcceptWritesForDatabase(OperationContext* opCtx, StringData dbName);
virtual bool canAcceptWritesForDatabase_UNSAFE(OperationContext* opCtx, StringData dbName);
bool canAcceptWritesFor(OperationContext* opCtx, const NamespaceString& ns) override;
bool canAcceptWritesFor_UNSAFE(OperationContext* opCtx, const NamespaceString& ns) override;
virtual Status checkIfWriteConcernCanBeSatisfied(const WriteConcernOptions& writeConcern) const;
virtual Status checkIfCommitQuorumCanBeSatisfied(const CommitQuorumOptions& commitQuorum) const;
virtual StatusWith<bool> checkIfCommitQuorumIsSatisfied(
const CommitQuorumOptions& commitQuorum,
const std::vector<HostAndPort>& commitReadyMembers) const;
virtual Status checkCanServeReadsFor(OperationContext* opCtx,
const NamespaceString& ns,
bool slaveOk);
virtual Status checkCanServeReadsFor_UNSAFE(OperationContext* opCtx,
const NamespaceString& ns,
bool slaveOk);
virtual bool shouldRelaxIndexConstraints(OperationContext* opCtx, const NamespaceString& ns);
virtual void setMyLastAppliedOpTimeAndWallTime(const OpTimeAndWallTime& opTimeAndWallTime);
virtual void setMyLastDurableOpTimeAndWallTime(const OpTimeAndWallTime& opTimeAndWallTime);
virtual void setMyLastAppliedOpTimeAndWallTimeForward(
const OpTimeAndWallTime& opTimeAndWallTime, DataConsistency consistency);
virtual void setMyLastDurableOpTimeAndWallTimeForward(
const OpTimeAndWallTime& opTimeAndWallTime);
virtual void resetMyLastOpTimes();
virtual void setMyHeartbeatMessage(const std::string& msg);
virtual OpTimeAndWallTime getMyLastAppliedOpTimeAndWallTime() const;
virtual OpTime getMyLastAppliedOpTime() const;
virtual OpTimeAndWallTime getMyLastDurableOpTimeAndWallTime() const;
virtual OpTime getMyLastDurableOpTime() const;
virtual Status waitUntilOpTimeForRead(OperationContext* opCtx,
const ReadConcernArgs& settings) override;
virtual Status waitUntilOpTimeForReadUntil(OperationContext* opCtx,
const ReadConcernArgs& settings,
boost::optional<Date_t> deadline) override;
virtual Status awaitTimestampCommitted(OperationContext* opCtx, Timestamp ts);
virtual OID getElectionId();
virtual OID getMyRID() const;
virtual int getMyId() const;
virtual HostAndPort getMyHostAndPort() const;
virtual Status setFollowerMode(const MemberState& newState);
virtual Status setFollowerModeStrict(OperationContext* opCtx, const MemberState& newState);
virtual ApplierState getApplierState();
virtual void signalDrainComplete(OperationContext*, long long);
virtual Status waitForDrainFinish(Milliseconds timeout) override;
virtual void signalUpstreamUpdater();
virtual Status resyncData(OperationContext* opCtx, bool waitUntilCompleted) override;
virtual StatusWith<BSONObj> prepareReplSetUpdatePositionCommand() const override;
virtual Status processReplSetGetStatus(BSONObjBuilder*, ReplSetGetStatusResponseStyle);
void fillIsMasterForReplSet(IsMasterResponse* result,
const SplitHorizon::Parameters& horizon) override;
virtual void appendSlaveInfoData(BSONObjBuilder* result);
void appendConnectionStats(executor::ConnectionPoolStats* stats) const override;
virtual ReplSetConfig getConfig() const;
virtual void processReplSetGetConfig(BSONObjBuilder* result);
virtual void processReplSetMetadata(const rpc::ReplSetMetadata& replMetadata) override;
virtual void advanceCommitPoint(const OpTimeAndWallTime& committedOptimeAndWallTime,
bool fromSyncSource) override;
virtual void cancelAndRescheduleElectionTimeout() override;
virtual Status setMaintenanceMode(bool activate);
virtual bool getMaintenanceMode();
virtual Status processReplSetSyncFrom(OperationContext* opCtx,
const HostAndPort& target,
BSONObjBuilder* resultObj);
virtual Status processReplSetFreeze(int secs, BSONObjBuilder* resultObj);
virtual Status processReplSetReconfig(OperationContext* opCtx,
const ReplSetReconfigArgs& args,
BSONObjBuilder* resultObj);
virtual Status processReplSetInitiate(OperationContext* opCtx,
const BSONObj& configObj,
BSONObjBuilder* resultObj);
virtual Status processReplSetUpdatePosition(const UpdatePositionArgs& updates,
long long* configVersion);
virtual bool buildsIndexes();
virtual std::vector<HostAndPort> getHostsWrittenTo(const OpTime& op, bool durablyWritten);
virtual std::vector<HostAndPort> getOtherNodesInReplSet() const;
virtual WriteConcernOptions getGetLastErrorDefault();
virtual Status checkReplEnabledForCommand(BSONObjBuilder* result);
virtual HostAndPort chooseNewSyncSource(const OpTime& lastOpTimeFetched);
virtual void blacklistSyncSource(const HostAndPort& host, Date_t until);
virtual void resetLastOpTimesFromOplog(OperationContext* opCtx, DataConsistency consistency);
bool lastOpTimesWereReset() const;
virtual bool shouldChangeSyncSource(const HostAndPort& currentSource,
const rpc::ReplSetMetadata& replMetadata,
boost::optional<rpc::OplogQueryMetadata> oqMetadata);
virtual OpTime getLastCommittedOpTime() const;
virtual OpTimeAndWallTime getLastCommittedOpTimeAndWallTime() const;
virtual std::vector<MemberData> getMemberData() const override;
virtual Status processReplSetRequestVotes(OperationContext* opCtx,
const ReplSetRequestVotesArgs& args,
ReplSetRequestVotesResponse* response);
void prepareReplMetadata(const BSONObj& metadataRequestObj,
const OpTime& lastOpTimeFromClient,
BSONObjBuilder* builder) const override;
virtual Status processHeartbeatV1(const ReplSetHeartbeatArgsV1& args,
ReplSetHeartbeatResponse* response);
virtual bool getWriteConcernMajorityShouldJournal();
virtual long long getTerm();
virtual Status updateTerm(OperationContext* opCtx, long long term);
virtual void dropAllSnapshots() override;
virtual OpTime getCurrentCommittedSnapshotOpTime() const override;
virtual OpTimeAndWallTime getCurrentCommittedSnapshotOpTimeAndWallTime() const override;
virtual void waitUntilSnapshotCommitted(OperationContext* opCtx,
const Timestamp& untilSnapshot) override;
virtual size_t getNumUncommittedSnapshots() override;
virtual WriteConcernOptions populateUnsetWriteConcernOptionsSyncMode(
WriteConcernOptions wc) override;
virtual Status stepUpIfEligible(bool skipDryRun) override;
/**
* Sets the return value for calls to getConfig.
*/
void setGetConfigReturnValue(ReplSetConfig returnValue);
/**
* Sets the function to generate the return value for calls to awaitReplication().
* 'OperationContext' and 'opTime' are the parameters passed to awaitReplication().
*/
using AwaitReplicationReturnValueFunction =
stdx::function<StatusAndDuration(OperationContext*, const OpTime&)>;
void setAwaitReplicationReturnValueFunction(
AwaitReplicationReturnValueFunction returnValueFunction);
/**
* Always allow writes even if this node is not master. Used by sharding unit tests.
*/
void alwaysAllowWrites(bool allowWrites);
virtual ServiceContext* getServiceContext() override {
return _service;
}
virtual Status abortCatchupIfNeeded() override;
void signalDropPendingCollectionsRemovedFromStorage() final;
virtual boost::optional<Timestamp> getRecoveryTimestamp() override;
virtual bool setContainsArbiter() const override;
virtual void attemptToAdvanceStableTimestamp() override;
virtual void setCanAcceptNonLocalWrites(bool canAcceptNonLocalWrites);
private:
AtomicWord<unsigned long long> _snapshotNameGenerator;
ServiceContext* const _service;
ReplSettings _settings;
StorageInterface* _storage = nullptr;
MemberState _memberState;
OpTime _myLastDurableOpTime;
Date_t _myLastDurableWallTime;
OpTime _myLastAppliedOpTime;
Date_t _myLastAppliedWallTime;
ReplSetConfig _getConfigReturnValue;
AwaitReplicationReturnValueFunction _awaitReplicationReturnValueFunction = [](OperationContext*,
const OpTime&) {
return StatusAndDuration(Status::OK(), Milliseconds(0));
};
bool _alwaysAllowWrites = false;
bool _resetLastOpTimesCalled = false;
long long _term = OpTime::kInitialTerm;
bool _canAcceptNonLocalWrites = false;
};
} // namespace repl
} // namespace mongo
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