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/**
* Copyright (C) 2012 10gen 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 <string>
#include "mongo/base/status.h"
#include "mongo/db/catalog/index_catalog.h"
#include "mongo/db/jsobj.h"
#include "mongo/platform/atomic_word.h"
#include "mongo/util/background.h"
namespace mongo {
class Collection;
class Database;
class OperationContext;
/**
* Forks off a thread to build an index.
*/
class IndexBuilder : public BackgroundJob {
public:
IndexBuilder(const BSONObj& index);
virtual ~IndexBuilder();
virtual void run();
/**
* name of the builder, not the index
*/
virtual std::string name() const;
Status buildInForeground(OperationContext* txn, Database* db) const;
/**
* Kill all in-progress indexes matching criteria, if non-empty:
* index ns, index name, and/or index key spec.
* Returns a vector of the indexes that were killed.
*/
static std::vector<BSONObj>
killMatchingIndexBuilds(Collection* collection,
const IndexCatalog::IndexKillCriteria& criteria);
/**
* Retry all index builds in the list. Builds each index in a separate thread. If ns does
* not match the ns field in the indexes list, the BSONObj's ns field is changed before the
* index is built (to handle rename).
*/
static void restoreIndexes(const std::vector<BSONObj>& indexes);
private:
Status _build(OperationContext* txn,
Database* db,
bool allowBackgroundBuilding,
Lock::DBLock* dbLock) const;
const BSONObj _index;
std::string _name; // name of this builder, not related to the index
static AtomicUInt32 _indexBuildCount;
};
}
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