mirror of https://gitee.com/bigwinds/arangodb
95 lines
3.0 KiB
C++
95 lines
3.0 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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/// DISCLAIMER
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///
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/// Copyright 2014-2016 ArangoDB GmbH, Cologne, Germany
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/// Copyright 2004-2014 triAGENS GmbH, Cologne, Germany
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///
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/// Licensed under the Apache License, Version 2.0 (the "License");
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/// you may not use this file except in compliance with the License.
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/// You may obtain a copy of the License at
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///
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/// http://www.apache.org/licenses/LICENSE-2.0
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///
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/// Unless required by applicable law or agreed to in writing, software
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/// distributed under the License is distributed on an "AS IS" BASIS,
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/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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/// See the License for the specific language governing permissions and
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/// limitations under the License.
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///
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/// Copyright holder is ArangoDB GmbH, Cologne, Germany
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///
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/// @author Dr. Frank Celler
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/// @author Achim Brandt
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////////////////////////////////////////////////////////////////////////////////
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#ifndef ARANGOD_SCHEDULER_PERIODIC_TASK_H
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#define ARANGOD_SCHEDULER_PERIODIC_TASK_H 1
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#include "Basics/Common.h"
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#include "Scheduler/Task.h"
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namespace arangodb {
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namespace velocypack {
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class Builder;
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}
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namespace rest {
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////////////////////////////////////////////////////////////////////////////////
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/// @ingroup Scheduler
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/// @brief task used to handle periodic events
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////////////////////////////////////////////////////////////////////////////////
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class PeriodicTask : virtual public Task {
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public:
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//////////////////////////////////////////////////////////////////////////////
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/// @brief constructs a new task for a given periodic event
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//////////////////////////////////////////////////////////////////////////////
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PeriodicTask(std::string const&, double, double);
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protected:
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//////////////////////////////////////////////////////////////////////////////
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/// @brief called when the timer is reached
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//////////////////////////////////////////////////////////////////////////////
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virtual bool handlePeriod() = 0;
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protected:
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~PeriodicTask();
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public:
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//////////////////////////////////////////////////////////////////////////////
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/// @brief get a task specific description in VelocyPack format
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//////////////////////////////////////////////////////////////////////////////
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virtual void getDescription(arangodb::velocypack::Builder&) const override;
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//////////////////////////////////////////////////////////////////////////////
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/// @brief resets the timer
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//////////////////////////////////////////////////////////////////////////////
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void resetTimer(double offset, double interval);
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protected:
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bool setup(Scheduler*, EventLoop) override;
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void cleanup() override;
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bool handleEvent(EventToken, EventType) override;
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private:
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//////////////////////////////////////////////////////////////////////////////
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/// @brief periodic event
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//////////////////////////////////////////////////////////////////////////////
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EventToken _watcher;
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double _offset;
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double _interval;
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};
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}
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}
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#endif
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