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// wiredtiger_kv_engine.h
/**
* Copyright (C) 2014 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 <set>
#include <string>
#include <boost/scoped_ptr.hpp>
#include <boost/thread/mutex.hpp>
#include <wiredtiger.h>
#include "mongo/bson/ordering.h"
#include "mongo/db/storage/kv/kv_engine.h"
#include "mongo/db/storage/wiredtiger/wiredtiger_session_cache.h"
#include "mongo/util/elapsed_tracker.h"
namespace mongo {
class WiredTigerSessionCache;
class WiredTigerSizeStorer;
class WiredTigerKVEngine : public KVEngine {
public:
WiredTigerKVEngine( const std::string& path,
const std::string& extraOpenOptions = "",
bool durable = true,
bool repair = false );
virtual ~WiredTigerKVEngine();
void setRecordStoreExtraOptions( const std::string& options );
void setSortedDataInterfaceExtraOptions( const std::string& options );
virtual bool supportsDocLocking() const;
virtual bool isDurable() const { return _durable; }
virtual RecoveryUnit* newRecoveryUnit();
virtual Status createRecordStore( OperationContext* opCtx,
const StringData& ns,
const StringData& ident,
const CollectionOptions& options );
virtual RecordStore* getRecordStore( OperationContext* opCtx,
const StringData& ns,
const StringData& ident,
const CollectionOptions& options );
virtual Status createSortedDataInterface( OperationContext* opCtx,
const StringData& ident,
const IndexDescriptor* desc );
virtual SortedDataInterface* getSortedDataInterface( OperationContext* opCtx,
const StringData& ident,
const IndexDescriptor* desc );
virtual Status dropIdent( OperationContext* opCtx,
const StringData& ident );
virtual Status okToRename( OperationContext* opCtx,
const StringData& fromNS,
const StringData& toNS,
const StringData& ident,
const RecordStore* originalRecordStore ) const;
virtual int flushAllFiles( bool sync );
virtual int64_t getIdentSize( OperationContext* opCtx,
const StringData& ident );
virtual Status repairIdent( OperationContext* opCtx,
const StringData& ident );
virtual bool hasIdent(OperationContext* opCtx, const StringData& ident) const;
std::vector<std::string> getAllIdents( OperationContext* opCtx ) const;
virtual void cleanShutdown();
// wiredtiger specific
// Calls WT_CONNECTION::reconfigure on the underlying WT_CONNECTION
// held by this class
int reconfigure(const char* str);
WT_CONNECTION* getConnection() { return _conn; }
void dropAllQueued();
bool haveDropsQueued() const;
void syncSizeInfo(bool sync) const;
private:
Status _salvageIfNeeded(const char* uri);
void _checkIdentPath( const StringData& ident );
bool _hasUri(WT_SESSION* session, const std::string& uri) const;
string _uri( const StringData& ident ) const;
bool _drop( const StringData& ident );
WT_CONNECTION* _conn;
WT_EVENT_HANDLER _eventHandler;
boost::scoped_ptr<WiredTigerSessionCache> _sessionCache;
std::string _path;
bool _durable;
string _rsOptions;
string _indexOptions;
std::set<std::string> _identToDrop;
mutable boost::mutex _identToDropMutex;
boost::scoped_ptr<WiredTigerSizeStorer> _sizeStorer;
string _sizeStorerUri;
mutable ElapsedTracker _sizeStorerSyncTracker;
};
}
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