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arangodb/lib/Scheduler/TimerTask.h

127 lines
4.2 KiB
C++

////////////////////////////////////////////////////////////////////////////////
/// @brief tasks used to handle timer events
///
/// @file
///
/// DISCLAIMER
///
/// Copyright 2014 ArangoDB GmbH, Cologne, Germany
/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
/// http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is ArangoDB GmbH, Cologne, Germany
///
/// @author Dr. Frank Celler
/// @author Achim Brandt
/// @author Copyright 2014, ArangoDB GmbH, Cologne, Germany
/// @author Copyright 2008-2014, triAGENS GmbH, Cologne, Germany
////////////////////////////////////////////////////////////////////////////////
#ifndef ARANGODB_SCHEDULER_TIMER_TASK_H
#define ARANGODB_SCHEDULER_TIMER_TASK_H 1
#include "Basics/Common.h"
#include "Scheduler/Task.h"
struct TRI_json_t;
namespace triagens {
namespace rest {
////////////////////////////////////////////////////////////////////////////////
/// @ingroup Scheduler
/// @brief task used to handle timer events
////////////////////////////////////////////////////////////////////////////////
class TimerTask : virtual public Task {
public:
////////////////////////////////////////////////////////////////////////////////
/// @brief constructs a new task for a timer event
////////////////////////////////////////////////////////////////////////////////
explicit
TimerTask (std::string const&, double);
////////////////////////////////////////////////////////////////////////////////
/// @brief get a task specific description in JSON format
////////////////////////////////////////////////////////////////////////////////
virtual void getDescription (struct TRI_json_t*);
protected:
////////////////////////////////////////////////////////////////////////////////
/// @brief called when the timer is reached
////////////////////////////////////////////////////////////////////////////////
virtual bool handleTimeout () = 0;
protected:
////////////////////////////////////////////////////////////////////////////////
/// @brief destructor
////////////////////////////////////////////////////////////////////////////////
~TimerTask ();
protected:
////////////////////////////////////////////////////////////////////////////////
/// {@inheritDoc}
////////////////////////////////////////////////////////////////////////////////
bool setup (Scheduler*, EventLoop);
////////////////////////////////////////////////////////////////////////////////
/// {@inheritDoc}
////////////////////////////////////////////////////////////////////////////////
void cleanup ();
////////////////////////////////////////////////////////////////////////////////
/// {@inheritDoc}
////////////////////////////////////////////////////////////////////////////////
bool handleEvent (EventToken token, EventType event);
protected:
////////////////////////////////////////////////////////////////////////////////
/// @brief timer event
////////////////////////////////////////////////////////////////////////////////
EventToken watcher;
protected:
////////////////////////////////////////////////////////////////////////////////
/// @brief timeout
////////////////////////////////////////////////////////////////////////////////
double seconds;
};
}
}
#endif
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