granicus.if.org Git - icinga2/blob - lib/checker/checkercomponent.hpp

   1 /******************************************************************************
   2  * Icinga 2                                                                   *
   3  * Copyright (C) 2012-2018 Icinga Development Team (https://www.icinga.com/)  *
   4  *                                                                            *
   5  * This program is free software; you can redistribute it and/or              *
   6  * modify it under the terms of the GNU General Public License                *
   7  * as published by the Free Software Foundation; either version 2             *
   8  * of the License, or (at your option) any later version.                     *
   9  *                                                                            *
  10  * This program is distributed in the hope that it will be useful,            *
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of             *
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the              *
  13  * GNU General Public License for more details.                               *
  14  *                                                                            *
  15  * You should have received a copy of the GNU General Public License          *
  16  * along with this program; if not, write to the Free Software Foundation     *
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.             *
  18  ******************************************************************************/
  19
  20 #ifndef CHECKERCOMPONENT_H
  21 #define CHECKERCOMPONENT_H
  22
  23 #include "checker/checkercomponent.thpp"
  24 #include "icinga/service.hpp"
  25 #include "base/configobject.hpp"
  26 #include "base/timer.hpp"
  27 #include "base/utility.hpp"
  28 #include <boost/thread/mutex.hpp>
  29 #include <boost/thread/condition_variable.hpp>
  30 #include <boost/multi_index_container.hpp>
  31 #include <boost/multi_index/ordered_index.hpp>
  32 #include <boost/multi_index/key_extractors.hpp>
  33 #include <thread>
  34
  35 namespace icinga
  36 {
  37
  38 /**
  39  * @ingroup checker
  40  */
  41 struct CheckableScheduleInfo
  42 {
  43         Checkable::Ptr Object;
  44         double NextCheck;
  45 };
  46
  47 /**
  48  * @ingroup checker
  49  */
  50 struct CheckableNextCheckExtractor
  51 {
  52         typedef double result_type;
  53
  54         /**
  55          * @threadsafety Always.
  56          */
  57         double operator()(const CheckableScheduleInfo& csi)
  58         {
  59                 return csi.NextCheck;
  60         }
  61 };
  62
  63 /**
  64  * @ingroup checker
  65  */
  66 class CheckerComponent final : public ObjectImpl<CheckerComponent>
  67 {
  68 public:
  69         DECLARE_OBJECT(CheckerComponent);
  70         DECLARE_OBJECTNAME(CheckerComponent);
  71
  72         typedef boost::multi_index_container<
  73                 CheckableScheduleInfo,
  74                 boost::multi_index::indexed_by<
  75                         boost::multi_index::ordered_unique<boost::multi_index::member<CheckableScheduleInfo, Checkable::Ptr, &CheckableScheduleInfo::Object> >,
  76                         boost::multi_index::ordered_non_unique<CheckableNextCheckExtractor>
  77                 >
  78         > CheckableSet;
  79
  80         void OnConfigLoaded() override;
  81         void Start(bool runtimeCreated) override;
  82         void Stop(bool runtimeRemoved) override;
  83
  84         static void StatsFunc(const Dictionary::Ptr& status, const Array::Ptr& perfdata);
  85         unsigned long GetIdleCheckables();
  86         unsigned long GetPendingCheckables();
  87
  88 private:
  89         boost::mutex m_Mutex;
  90         boost::condition_variable m_CV;
  91         bool m_Stopped{false};
  92         std::thread m_Thread;
  93
  94         CheckableSet m_IdleCheckables;
  95         CheckableSet m_PendingCheckables;
  96
  97         Timer::Ptr m_ResultTimer;
  98
  99         void CheckThreadProc();
 100         void ResultTimerHandler();
 101
 102         void ExecuteCheckHelper(const Checkable::Ptr& checkable);
 103
 104         void AdjustCheckTimer();
 105
 106         void ObjectHandler(const ConfigObject::Ptr& object);
 107         void NextCheckChangedHandler(const Checkable::Ptr& checkable);
 108
 109         void RescheduleCheckTimer();
 110
 111         static CheckableScheduleInfo GetCheckableScheduleInfo(const Checkable::Ptr& checkable);
 112 };
 113
 114 }
 115
 116 #endif /* CHECKERCOMPONENT_H */