granicus.if.org Git - icinga2/blob - lib/icinga/servicegroup.cpp

   1 /******************************************************************************
   2  * Icinga 2                                                                   *
   3  * Copyright (C) 2012 Icinga Development Team (http://www.icinga.org/)        *
   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 #include "i2-icinga.h"
  21 #include "icinga/servicegroup.h"
  22 #include "base/dynamictype.h"
  23 #include "base/objectlock.h"
  24 #include "base/logger_fwd.h"
  25 #include <boost/smart_ptr/make_shared.hpp>
  26 #include <boost/foreach.hpp>
  27
  28 using namespace icinga;
  29
  30 boost::mutex ServiceGroup::m_Mutex;
  31 std::map<String, std::vector<Service::WeakPtr> > ServiceGroup::m_MembersCache;
  32 bool ServiceGroup::m_MembersCacheNeedsUpdate = false;
  33 Timer::Ptr ServiceGroup::m_MembersCacheTimer;
  34
  35 REGISTER_TYPE(ServiceGroup);
  36
  37 ServiceGroup::ServiceGroup(const Dictionary::Ptr& serializedUpdate)
  38         : DynamicObject(serializedUpdate)
  39 {
  40         RegisterAttribute("display_name", Attribute_Config, &m_DisplayName);
  41         RegisterAttribute("notes_url", Attribute_Config, &m_NotesUrl);
  42         RegisterAttribute("action_url", Attribute_Config, &m_ActionUrl);
  43 }
  44
  45 ServiceGroup::~ServiceGroup(void)
  46 {
  47         InvalidateMembersCache();
  48 }
  49
  50 /**
  51  * @threadsafety Always.
  52  */
  53 void ServiceGroup::OnRegistrationCompleted(void)
  54 {
  55         ASSERT(!OwnsLock());
  56
  57         InvalidateMembersCache();
  58 }
  59
  60 /**
  61  * @threadsafety Always.
  62  */
  63 String ServiceGroup::GetDisplayName(void) const
  64 {
  65         if (!m_DisplayName.Get().IsEmpty())
  66                 return m_DisplayName;
  67         else
  68                 return GetName();
  69 }
  70
  71 /**
  72  * @threadsafety Always.
  73  */
  74 String ServiceGroup::GetNotesUrl(void) const
  75 {
  76         return m_NotesUrl;
  77 }
  78
  79 /**
  80  * @threadsafety Always.
  81  */
  82 String ServiceGroup::GetActionUrl(void) const
  83 {
  84         return m_ActionUrl;
  85 }
  86
  87 /**
  88  * @threadsafety Always.
  89  */
  90 ServiceGroup::Ptr ServiceGroup::GetByName(const String& name)
  91 {
  92         DynamicObject::Ptr configObject = DynamicObject::GetObject("ServiceGroup", name);
  93
  94         if (!configObject)
  95                 BOOST_THROW_EXCEPTION(std::invalid_argument("ServiceGroup '" + name + "' does not exist."));
  96
  97         return dynamic_pointer_cast<ServiceGroup>(configObject);
  98 }
  99
 100 /**
 101  * @threadsafety Always.
 102  */
 103 std::set<Service::Ptr> ServiceGroup::GetMembers(void) const
 104 {
 105         std::set<Service::Ptr> services;
 106
 107         {
 108                 boost::mutex::scoped_lock lock(m_Mutex);
 109
 110                 BOOST_FOREACH(const Service::WeakPtr& wservice, m_MembersCache[GetName()]) {
 111                         Service::Ptr service = wservice.lock();
 112
 113                         if (!service)
 114                                 continue;
 115
 116                         services.insert(service);
 117                 }
 118         }
 119
 120         return services;
 121 }
 122
 123 /**
 124  * @threadsafety Always.
 125  */
 126 void ServiceGroup::InvalidateMembersCache(void)
 127 {
 128         boost::mutex::scoped_lock lock(m_Mutex);
 129
 130         if (m_MembersCacheNeedsUpdate)
 131                 return; /* Someone else has already requested a refresh. */
 132
 133         if (!m_MembersCacheTimer) {
 134                 m_MembersCacheTimer = boost::make_shared<Timer>();
 135                 m_MembersCacheTimer->SetInterval(0.5);
 136                 m_MembersCacheTimer->OnTimerExpired.connect(boost::bind(&ServiceGroup::RefreshMembersCache));
 137                 m_MembersCacheTimer->Start();
 138         }
 139
 140         m_MembersCacheNeedsUpdate = true;
 141 }
 142
 143 /**
 144  * @threadsafety Always.
 145  */
 146 void ServiceGroup::RefreshMembersCache(void)
 147 {
 148         {
 149                 boost::mutex::scoped_lock lock(m_Mutex);
 150
 151                 if (!m_MembersCacheNeedsUpdate)
 152                         return;
 153
 154                 m_MembersCacheNeedsUpdate = false;
 155         }
 156
 157         Log(LogDebug, "icinga", "Updating ServiceGroup members cache.");
 158
 159         std::map<String, std::vector<Service::WeakPtr> > newMembersCache;
 160
 161         BOOST_FOREACH(const DynamicObject::Ptr& object, DynamicType::GetObjects("Service")) {
 162                 const Service::Ptr& service = static_pointer_cast<Service>(object);
 163
 164                 Array::Ptr groups = service->GetGroups();
 165
 166                 if (groups) {
 167                         ObjectLock mlock(groups);
 168                         BOOST_FOREACH(const Value& group, groups) {
 169                                 newMembersCache[group].push_back(service);
 170                         }
 171                 }
 172         }
 173
 174         boost::mutex::scoped_lock lock(m_Mutex);
 175         m_MembersCache.swap(newMembersCache);
 176 }