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// dbhash.h
/**
* 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/commands.h"
namespace mongo {
void logOpForDbHash( OperationContext* txn, const char* ns );
class DBHashCmd : public Command {
public:
DBHashCmd();
virtual bool slaveOk() const { return true; }
virtual bool isWriteCommandForConfigServer() const { return false; }
virtual void addRequiredPrivileges(const std::string& dbname,
const BSONObj& cmdObj,
std::vector<Privilege>* out);
virtual bool run(OperationContext* txn,
const std::string& dbname,
BSONObj& cmdObj,
int,
std::string& errmsg,
BSONObjBuilder& result);
void wipeCacheForCollection(OperationContext* txn, StringData ns);
private:
/**
* RecoveryUnit::Change subclass used to commit work for dbhash logOp listener
*/
class DBHashLogOpHandler;
bool isCachable( StringData ns ) const;
std::string hashCollection( OperationContext* opCtx, Database* db, const std::string& fullCollectionName, bool* fromCache );
std::map<std::string,std::string> _cachedHashed;
mutex _cachedHashedMutex;
};
}
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