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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/>.
*/
#pragma once
#include "mongo/db/namespace_details.h"
#include "mongo/util/background.h"
namespace mongo {
// This is a job that's only run at startup. It finds all incomplete indices and
// finishes rebuilding them. After they complete rebuilding, the thread terminates.
class IndexRebuilder : public BackgroundJob {
public:
IndexRebuilder();
std::string name() const;
void run();
private:
/**
* Check each collection in a database to see if it has any in-progress index builds that
* need to be retried. If so, calls retryIndexBuild.
*/
void checkDB(const std::string& dbname, bool* firstTime);
/**
* Actually retry an index build on a given namespace.
* @param dbName the name of the database for accessing db.system.indexes
* @param nsd the namespace details of the namespace building the index
* @param index the offset into nsd's index array of the partially-built index
*/
void retryIndexBuild(const std::string& dbName,
NamespaceDetails* nsd );
};
extern IndexRebuilder indexRebuilder;
}
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