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// record_store_v1_simple.h
/**
* Copyright (C) 2013-2014 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 "mongo/db/catalog/collection_options.h"
#include "mongo/db/storage/mmap_v1/diskloc.h"
#include "mongo/db/storage/mmap_v1/record_store_v1_base.h"
namespace mongo {
class SimpleRecordStoreV1Cursor;
// used by index and original collections
class SimpleRecordStoreV1 : public RecordStoreV1Base {
public:
SimpleRecordStoreV1(OperationContext* txn,
StringData ns,
RecordStoreV1MetaData* details,
ExtentManager* em,
bool isSystemIndexes);
virtual ~SimpleRecordStoreV1();
const char* name() const {
return "SimpleRecordStoreV1";
}
std::unique_ptr<SeekableRecordCursor> getCursor(OperationContext* txn,
bool forward) const final;
std::vector<std::unique_ptr<RecordCursor>> getManyCursors(OperationContext* txn) const final;
virtual Status truncate(OperationContext* txn);
virtual void cappedTruncateAfter(OperationContext* txn, RecordId end, bool inclusive) {
invariant(!"cappedTruncateAfter not supported");
}
virtual bool compactSupported() const {
return true;
}
virtual bool compactsInPlace() const {
return false;
}
virtual Status compact(OperationContext* txn,
RecordStoreCompactAdaptor* adaptor,
const CompactOptions* options,
CompactStats* stats);
protected:
virtual bool isCapped() const {
return false;
}
virtual bool shouldPadInserts() const {
return !_details->isUserFlagSet(CollectionOptions::Flag_NoPadding);
}
virtual StatusWith<DiskLoc> allocRecord(OperationContext* txn,
int lengthWithHeaders,
bool enforceQuota);
virtual void addDeletedRec(OperationContext* txn, const DiskLoc& dloc);
private:
DiskLoc _allocFromExistingExtents(OperationContext* txn, int lengthWithHeaders);
void _compactExtent(OperationContext* txn,
const DiskLoc diskloc,
int extentNumber,
RecordStoreCompactAdaptor* adaptor,
const CompactOptions* compactOptions,
CompactStats* stats);
bool _normalCollection;
friend class SimpleRecordStoreV1Iterator;
};
}
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