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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/db/repl/data_replicator_external_state.h"
namespace mongo {
namespace repl {
class ReplicationCoordinator;
class ReplicationCoordinatorExternalState;
/**
* Data replicator external state implementation using a replication coordinator.
*/
class DataReplicatorExternalStateImpl : public DataReplicatorExternalState {
public:
DataReplicatorExternalStateImpl(
ReplicationCoordinator* replicationCoordinator,
ReplicationCoordinatorExternalState* replicationCoordinatorExternalState);
executor::TaskExecutor* getTaskExecutor() const override;
std::shared_ptr<executor::TaskExecutor> getSharedTaskExecutor() const;
OpTimeWithTerm getCurrentTermAndLastCommittedOpTime() override;
void processMetadata(const rpc::ReplSetMetadata& replMetadata,
rpc::OplogQueryMetadata oqMetadata) override;
ChangeSyncSourceAction shouldStopFetching(const HostAndPort& source,
const rpc::ReplSetMetadata& replMetadata,
const rpc::OplogQueryMetadata& oqMetadata,
const OpTime& previousOpTimeFetched,
const OpTime& lastOpTimeFetched) const override;
ChangeSyncSourceAction shouldStopFetchingOnError(
const HostAndPort& source, const OpTime& lastOpTimeFetched) const override;
std::unique_ptr<OplogBuffer> makeInitialSyncOplogBuffer(OperationContext* opCtx) const override;
/**
* These arguments are passed directly to OplogApplierImpl's constructor along with some other
* parameters owned by this DataReplicationExternalStateImpl.
* These arguments are required by OplogApplier to get the next applier batch and to apply
* a batch of operations in parallel.
* None of the the arguments will be owned by OplogApplierImpl.
*/
std::unique_ptr<OplogApplier> makeOplogApplier(
OplogBuffer* oplogBuffer,
OplogApplier::Observer* observer,
ReplicationConsistencyMarkers* consistencyMarkers,
StorageInterface* storageInterface,
const OplogApplier::Options& options,
ThreadPool* writerPool) final;
StatusWith<ReplSetConfig> getCurrentConfig() const override;
StatusWith<BSONObj> loadLocalConfigDocument(OperationContext* opCtx) const override;
Status storeLocalConfigDocument(OperationContext* opCtx, const BSONObj& config) override;
JournalListener* getReplicationJournalListener() override;
protected:
ReplicationCoordinator* getReplicationCoordinator() const;
ReplicationCoordinatorExternalState* getReplicationCoordinatorExternalState() const;
private:
// Not owned by us.
ReplicationCoordinator* _replicationCoordinator;
// Not owned by us.
ReplicationCoordinatorExternalState* _replicationCoordinatorExternalState;
};
} // namespace repl
} // namespace mongo
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