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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/disallow_copying.h"
#include "mongo/base/status_with.h"
#include "mongo/db/jsobj.h"
#include "mongo/util/net/hostandport.h"
#include "mongo/util/uuid.h"
namespace mongo {
class NamespaceString;
class OperationContext;
namespace repl {
class OplogInterface;
/**
* Interface for rollback-related operations on the sync source.
*/
class RollbackSource {
MONGO_DISALLOW_COPYING(RollbackSource);
public:
RollbackSource() = default;
virtual ~RollbackSource() = default;
/**
* Returns remote oplog interface.
* Read oplog entries with OplogInterface::makeIterator().
*/
virtual const OplogInterface& getOplog() const = 0;
/**
* Returns rollback sync source HostAndPort.
*/
virtual const HostAndPort& getSource() const = 0;
/**
* Returns rollback ID.
*/
virtual int getRollbackId() const = 0;
/**
* Returns last operation in oplog.
*/
virtual BSONObj getLastOperation() const = 0;
/**
* Fetch a single document from the sync source using the namespace.
*/
virtual BSONObj findOne(const NamespaceString& nss, const BSONObj& filter) const = 0;
/**
* Fetch a single document from the sync source using the UUID. Returns the namespace matching
* the UUID on the sync source as well.
*/
virtual std::pair<BSONObj, NamespaceString> findOneByUUID(const std::string& db,
UUID uuid,
const BSONObj& filter) const = 0;
/**
* Clones a single collection from the sync source.
*/
virtual void copyCollectionFromRemote(OperationContext* opCtx,
const NamespaceString& nss) const = 0;
/**
* Finds and returns collection info using the UUID.
*/
virtual StatusWith<BSONObj> getCollectionInfoByUUID(const std::string& db,
const UUID& uuid) const = 0;
/**
* Finds and returns collection info using the namespace.
* TODO: After MongoDB 3.6 is released, we will remove this function as it is only
* necessary for rollback with no uuid oplogs. See SERVER-29766.
*/
virtual StatusWith<BSONObj> getCollectionInfo(const NamespaceString& nss) const = 0;
};
} // namespace repl
} // namespace mongo
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