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/**
* Copyright (C) 2013 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 "mongo/db/range_deleter.h"
namespace mongo {
/**
* This class implements the deleter methods to be used for a shard.
*/
struct RangeDeleterDBEnv : public RangeDeleterEnv {
virtual void initThread();
/**
* Deletes the documents from the given range synchronously.
*
* The keyPattern will be used to determine the right index to use to perform
* the deletion and it can be a prefix of an existing index. Caller is responsible
* of making sure that both min and max is a prefix of keyPattern.
*
* Note that secondaryThrottle will be ignored if current process is not part
* of a replica set.
*
* docsDeleted would contain the number of docs deleted if the deletion was successful.
*
* Does not throw Exceptions.
*/
virtual bool deleteRange(OperationContext* txn,
const RangeDeleteEntry& taskDetails,
long long int* deletedDocs,
std::string* errMsg);
/**
* Gets the list of open cursors on a given namespace.
*/
virtual void getCursorIds(OperationContext* txn,
const StringData& ns,
std::set<CursorId>* openCursors);
};
}
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