diff options
Diffstat (limited to 'src/mongo/db/repl/rollback_source.h')
-rw-r--r-- | src/mongo/db/repl/rollback_source.h | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/src/mongo/db/repl/rollback_source.h b/src/mongo/db/repl/rollback_source.h new file mode 100644 index 00000000000..304a81717dc --- /dev/null +++ b/src/mongo/db/repl/rollback_source.h @@ -0,0 +1,90 @@ +/** + * Copyright (C) 2015 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/base/status_with.h" +#include "mongo/db/jsobj.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 ID. + */ + virtual int getRollbackId() const = 0; + + /** + * Returns last operation in oplog. + */ + virtual BSONObj getLastOperation() const = 0; + + /** + * Fetch a single document from the sync source. + */ + virtual BSONObj findOne(const NamespaceString& nss, const BSONObj& filter) const = 0; + + /** + * Clones a single collection from the sync source. + */ + virtual void copyCollectionFromRemote(OperationContext* txn, + const NamespaceString& nss) const = 0; + + /** + * Returns collection info. + */ + virtual StatusWith<BSONObj> getCollectionInfo(const NamespaceString& nss) const = 0; + + }; + +} // namespace repl +} // namespace mongo |