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arangodb/arangod/Scheduler/SchedulerFeature.h

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2.5 KiB
C++

////////////////////////////////////////////////////////////////////////////////
/// DISCLAIMER
///
/// Copyright 2014-2016 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
////////////////////////////////////////////////////////////////////////////////
#ifndef ARANGOD_SCHEDULER_SCHEDULER_FEATURE_H
#define ARANGOD_SCHEDULER_SCHEDULER_FEATURE_H 1
#include "ApplicationFeatures/ApplicationFeature.h"
#include "Basics/asio-helper.h"
namespace arangodb {
namespace rest {
class Scheduler;
}
class SchedulerFeature final : public application_features::ApplicationFeature {
public:
static rest::Scheduler* SCHEDULER;
public:
explicit SchedulerFeature(application_features::ApplicationServer* server);
~SchedulerFeature();
public:
void collectOptions(std::shared_ptr<options::ProgramOptions>) override final;
void validateOptions(std::shared_ptr<options::ProgramOptions>) override final;
void start() override final;
void beginShutdown() override final;
void stop() override final;
void unprepare() override final;
public:
uint64_t queueSize() const { return _queueSize; }
private:
uint64_t _nrServerThreads = 0;
uint64_t _nrMinimalThreads = 0;
uint64_t _nrMaximalThreads = 0;
uint64_t _queueSize = 0;
public:
size_t concurrency() const {
return static_cast<size_t>(_nrServerThreads);
}
void buildControlCHandler();
void buildHangupHandler();
private:
void buildScheduler();
private:
std::unique_ptr<rest::Scheduler> _scheduler;
std::function<void(const boost::system::error_code&, int)> _signalHandler;
std::function<void(const boost::system::error_code&, int)> _exitHandler;
std::shared_ptr<boost::asio::signal_set> _exitSignals;
std::function<void(const boost::system::error_code&, int)> _hangupHandler;
std::shared_ptr<boost::asio::signal_set> _hangupSignals;
};
}
#endif