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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/base/disallow_copying.h"
#include "mongo/db/namespace_string.h"
#include "mongo/db/repl/replication_consistency_markers.h"
#include "mongo/db/repl/replication_consistency_markers_gen.h"
namespace mongo {
class BSONObj;
class OperationContext;
class Timestamp;
namespace repl {
class OpTime;
class StorageInterface;
struct TimestampedBSONObj;
class ReplicationConsistencyMarkersImpl : public ReplicationConsistencyMarkers {
MONGO_DISALLOW_COPYING(ReplicationConsistencyMarkersImpl);
public:
static constexpr StringData kDefaultMinValidNamespace = "local.replset.minvalid"_sd;
static constexpr StringData kDefaultOplogTruncateAfterPointNamespace =
"local.replset.oplogTruncateAfterPoint"_sd;
explicit ReplicationConsistencyMarkersImpl(StorageInterface* storageInterface);
ReplicationConsistencyMarkersImpl(StorageInterface* storageInterface,
NamespaceString minValidNss,
NamespaceString oplogTruncateAfterNss);
void initializeMinValidDocument(OperationContext* opCtx) override;
bool getInitialSyncFlag(OperationContext* opCtx) const override;
void setInitialSyncFlag(OperationContext* opCtx) override;
void clearInitialSyncFlag(OperationContext* opCtx) override;
OpTime getMinValid(OperationContext* opCtx) const override;
void setMinValid(OperationContext* opCtx, const OpTime& minValid) override;
void setMinValidToAtLeast(OperationContext* opCtx, const OpTime& minValid) override;
void setOplogTruncateAfterPoint(OperationContext* opCtx, const Timestamp& timestamp) override;
Timestamp getOplogTruncateAfterPoint(OperationContext* opCtx) const override;
void setAppliedThrough(OperationContext* opCtx, const OpTime& optime) override;
void clearAppliedThrough(OperationContext* opCtx, const Timestamp& writeTimestamp) override;
OpTime getAppliedThrough(OperationContext* opCtx) const override;
Status createInternalCollections(OperationContext* opCtx);
private:
/**
* Reads the MinValid document from disk.
* Returns boost::none if not present.
*/
boost::optional<MinValidDocument> _getMinValidDocument(OperationContext* opCtx) const;
/**
* Updates the MinValid document according to the provided update spec. The collection must
* exist, see `createInternalCollections`. If the document does not exist, it is upserted.
*
* This fasserts on failure.
*/
void _updateMinValidDocument(OperationContext* opCtx, const TimestampedBSONObj& updateSpec);
/**
* Reads the OplogTruncateAfterPoint document from disk.
* Returns boost::none if not present.
*/
boost::optional<OplogTruncateAfterPointDocument> _getOplogTruncateAfterPointDocument(
OperationContext* opCtx) const;
/**
* Upserts the OplogTruncateAfterPoint document according to the provided update spec. The
* collection must already exist. See `createInternalCollections`.
*
* This fasserts on failure.
*/
void _upsertOplogTruncateAfterPointDocument(OperationContext* opCtx, const BSONObj& updateSpec);
StorageInterface* _storageInterface;
const NamespaceString _minValidNss;
const NamespaceString _oplogTruncateAfterPointNss;
};
} // namespace repl
} // namespace mongo
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