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/*
* Copyright (C) 2017 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/base/disallow_copying.h"
#include "mongo/db/logical_session_id.h"
#include "mongo/util/decorable.h"
namespace mongo {
class OperationContext;
/**
* A decorable container for state associated with an active session running on a MongoD or MongoS
* server. Refer to SessionCatalog for more information on the semantics of sessions.
*/
class Session : public Decorable<Session> {
MONGO_DISALLOW_COPYING(Session);
public:
explicit Session(LogicalSessionId sessionId);
/**
* The logical session id that this object represents.
*/
const LogicalSessionId& getSessionId() const {
return _sessionId;
}
/**
* Sets the current operation running on this Session.
*/
void setCurrentOperation(OperationContext* currentOperation);
/**
* Clears the current operation running on this Session.
*/
void clearCurrentOperation();
/**
* Returns a pointer to the current operation running on this Session, or nullptr if there is no
* operation currently running on this Session.
*/
OperationContext* getCurrentOperation() const;
private:
// The id of the session with which this object is associated
const LogicalSessionId _sessionId;
// Protects the member variables below.
mutable stdx::mutex _mutex;
// A pointer back to the currently running operation on this Session, or nullptr if there
// is no operation currently running for the Session.
OperationContext* _currentOperation{nullptr};
};
} // namespace mongo
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