mirror of https://github.com/Icinga/icinga2.git
409 lines
9.7 KiB
C++
409 lines
9.7 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012 Icinga Development Team (http://www.icinga.org/) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software Foundation *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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******************************************************************************/
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#include "icinga/service.h"
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#include "base/dynamictype.h"
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#include "base/objectlock.h"
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#include "base/logger_fwd.h"
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#include "base/timer.h"
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#include <boost/tuple/tuple.hpp>
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#include <boost/smart_ptr/make_shared.hpp>
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#include <boost/foreach.hpp>
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using namespace icinga;
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static int l_NextDowntimeID = 1;
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static boost::mutex l_DowntimeMutex;
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static std::map<int, String> l_LegacyDowntimesCache;
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static std::map<String, Service::WeakPtr> l_DowntimesCache;
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static bool l_DowntimesCacheNeedsUpdate = false;
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static Timer::Ptr l_DowntimesCacheTimer;
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static Timer::Ptr l_DowntimesExpireTimer;
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/**
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* @threadsafety Always.
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*/
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int Service::GetNextDowntimeID(void)
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{
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boost::mutex::scoped_lock lock(l_DowntimeMutex);
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return l_NextDowntimeID;
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}
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/**
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* @threadsafety Always.
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*/
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Dictionary::Ptr Service::GetDowntimes(void) const
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{
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return m_Downtimes;
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}
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/**
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* @threadsafety Always.
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*/
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String Service::AddDowntime(const String& author, const String& comment,
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double startTime, double endTime, bool fixed,
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const String& triggeredBy, double duration)
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{
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Dictionary::Ptr downtime = boost::make_shared<Dictionary>();
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downtime->Set("entry_time", Utility::GetTime());
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downtime->Set("author", author);
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downtime->Set("comment", comment);
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downtime->Set("start_time", startTime);
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downtime->Set("end_time", endTime);
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downtime->Set("fixed", fixed);
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downtime->Set("duration", duration);
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downtime->Set("triggered_by", triggeredBy);
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downtime->Set("triggers", boost::make_shared<Dictionary>());
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downtime->Set("trigger_time", 0);
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int legacy_id;
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{
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boost::mutex::scoped_lock lock(l_DowntimeMutex);
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legacy_id = l_NextDowntimeID++;
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}
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downtime->Set("legacy_id", legacy_id);
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if (!triggeredBy.IsEmpty()) {
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Service::Ptr otherOwner = GetOwnerByDowntimeID(triggeredBy);
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Dictionary::Ptr otherDowntimes = otherOwner->Get("downtimes");
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Dictionary::Ptr otherDowntime = otherDowntimes->Get(triggeredBy);
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Dictionary::Ptr triggers = otherDowntime->Get("triggers");
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triggers->Set(triggeredBy, triggeredBy);
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otherOwner->Touch("downtimes");
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}
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Dictionary::Ptr downtimes;
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{
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ObjectLock olock(this);
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downtimes = m_Downtimes;
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if (!downtimes)
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downtimes = boost::make_shared<Dictionary>();
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m_Downtimes = downtimes;
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}
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String id = Utility::NewUUID();
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downtimes->Set(id, downtime);
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Touch("downtimes");
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return id;
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}
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/**
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* @threadsafety Always.
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*/
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void Service::RemoveDowntime(const String& id)
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{
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Service::Ptr owner = GetOwnerByDowntimeID(id);
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if (!owner)
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return;
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Dictionary::Ptr downtimes = owner->GetDowntimes();
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if (!downtimes)
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return;
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downtimes->Remove(id);
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owner->Touch("downtimes");
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}
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/**
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* @threadsafety Always.
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*/
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void Service::TriggerDowntimes(void)
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{
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Dictionary::Ptr downtimes = GetDowntimes();
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if (!downtimes)
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return;
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std::vector<String> ids;
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{
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ObjectLock olock(downtimes);
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String id;
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BOOST_FOREACH(boost::tie(id, boost::tuples::ignore), downtimes) {
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ids.push_back(id);
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}
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}
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BOOST_FOREACH(const String& id, ids) {
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TriggerDowntime(id);
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}
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}
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/**
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* @threadsafety Always.
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*/
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void Service::TriggerDowntime(const String& id)
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{
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Service::Ptr owner = GetOwnerByDowntimeID(id);
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Dictionary::Ptr downtime = GetDowntimeByID(id);
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if (!downtime)
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return;
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double now = Utility::GetTime();
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if (now < downtime->Get("start_time") ||
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now > downtime->Get("end_time"))
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return;
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if (downtime->Get("trigger_time") == 0)
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downtime->Set("trigger_time", now);
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Dictionary::Ptr triggers = downtime->Get("triggers");
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ObjectLock olock(triggers);
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String tid;
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BOOST_FOREACH(boost::tie(tid, boost::tuples::ignore), triggers) {
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TriggerDowntime(tid);
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}
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owner->Touch("downtimes");
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}
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/**
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* @threadsafety Always.
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*/
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String Service::GetDowntimeIDFromLegacyID(int id)
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{
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boost::mutex::scoped_lock lock(l_DowntimeMutex);
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std::map<int, String>::iterator it = l_LegacyDowntimesCache.find(id);
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if (it == l_LegacyDowntimesCache.end())
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return Empty;
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return it->second;
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}
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/**
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* @threadsafety Always.
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*/
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Service::Ptr Service::GetOwnerByDowntimeID(const String& id)
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{
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boost::mutex::scoped_lock lock(l_DowntimeMutex);
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return l_DowntimesCache[id].lock();
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}
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/**
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* @threadsafety Always.
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*/
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Dictionary::Ptr Service::GetDowntimeByID(const String& id)
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{
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Service::Ptr owner = GetOwnerByDowntimeID(id);
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if (!owner)
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return Dictionary::Ptr();
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Dictionary::Ptr downtimes = owner->GetDowntimes();
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if (downtimes)
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return downtimes->Get(id);
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return Dictionary::Ptr();
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}
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/**
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* @threadsafety Always.
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*/
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bool Service::IsDowntimeActive(const Dictionary::Ptr& downtime)
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{
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double now = Utility::GetTime();
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if (now < downtime->Get("start_time") ||
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now > downtime->Get("end_time"))
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return false;
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if (static_cast<bool>(downtime->Get("fixed")))
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return true;
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double triggerTime = downtime->Get("trigger_time");
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if (triggerTime == 0)
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return false;
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return (triggerTime + downtime->Get("duration") < now);
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}
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/**
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* @threadsafety Always.
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*/
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bool Service::IsDowntimeExpired(const Dictionary::Ptr& downtime)
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{
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return (downtime->Get("end_time") < Utility::GetTime());
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}
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/**
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* @threadsafety Always.
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*/
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void Service::InvalidateDowntimesCache(void)
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{
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boost::mutex::scoped_lock lock(l_DowntimeMutex);
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if (l_DowntimesCacheNeedsUpdate)
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return; /* Someone else has already requested a refresh. */
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if (!l_DowntimesCacheTimer) {
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l_DowntimesCacheTimer = boost::make_shared<Timer>();
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l_DowntimesCacheTimer->SetInterval(0.5);
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l_DowntimesCacheTimer->OnTimerExpired.connect(boost::bind(&Service::RefreshDowntimesCache));
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l_DowntimesCacheTimer->Start();
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}
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l_DowntimesCacheNeedsUpdate = true;
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}
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/**
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* @threadsafety Always.
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*/
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void Service::RefreshDowntimesCache(void)
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{
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{
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boost::mutex::scoped_lock lock(l_DowntimeMutex);
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if (!l_DowntimesCacheNeedsUpdate)
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return;
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l_DowntimesCacheNeedsUpdate = false;
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}
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Log(LogDebug, "icinga", "Updating Service downtimes cache.");
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std::map<int, String> newLegacyDowntimesCache;
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std::map<String, Service::WeakPtr> newDowntimesCache;
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BOOST_FOREACH(const DynamicObject::Ptr& object, DynamicType::GetObjects("Service")) {
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Service::Ptr service = dynamic_pointer_cast<Service>(object);
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Dictionary::Ptr downtimes = service->GetDowntimes();
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if (!downtimes)
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continue;
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ObjectLock olock(downtimes);
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String id;
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Dictionary::Ptr downtime;
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BOOST_FOREACH(boost::tie(id, downtime), downtimes) {
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int legacy_id = downtime->Get("legacy_id");
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if (legacy_id >= l_NextDowntimeID)
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l_NextDowntimeID = legacy_id + 1;
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if (newLegacyDowntimesCache.find(legacy_id) != newLegacyDowntimesCache.end()) {
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/* The legacy_id is already in use by another downtime;
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* this shouldn't usually happen - assign it a new ID. */
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legacy_id = l_NextDowntimeID++;
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downtime->Set("legacy_id", legacy_id);
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service->Touch("downtimes");
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}
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newLegacyDowntimesCache[legacy_id] = id;
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newDowntimesCache[id] = service;
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}
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}
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boost::mutex::scoped_lock lock(l_DowntimeMutex);
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l_DowntimesCache.swap(newDowntimesCache);
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l_LegacyDowntimesCache.swap(newLegacyDowntimesCache);
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if (!l_DowntimesExpireTimer) {
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l_DowntimesExpireTimer = boost::make_shared<Timer>();
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l_DowntimesExpireTimer->SetInterval(300);
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l_DowntimesExpireTimer->OnTimerExpired.connect(boost::bind(&Service::DowntimesExpireTimerHandler));
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l_DowntimesExpireTimer->Start();
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}
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}
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/**
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* @threadsafety Always.
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*/
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void Service::RemoveExpiredDowntimes(void)
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{
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Dictionary::Ptr downtimes = GetDowntimes();
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if (!downtimes)
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return;
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std::vector<String> expiredDowntimes;
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{
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ObjectLock olock(downtimes);
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String id;
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Dictionary::Ptr downtime;
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BOOST_FOREACH(boost::tie(id, downtime), downtimes) {
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if (IsDowntimeExpired(downtime))
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expiredDowntimes.push_back(id);
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}
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}
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if (!expiredDowntimes.empty()) {
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BOOST_FOREACH(const String& id, expiredDowntimes) {
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downtimes->Remove(id);
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}
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Touch("downtimes");
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}
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}
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/**
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* @threadsafety Always.
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*/
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void Service::DowntimesExpireTimerHandler(void)
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{
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BOOST_FOREACH(const DynamicObject::Ptr& object, DynamicType::GetObjects("Service")) {
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Service::Ptr service = dynamic_pointer_cast<Service>(object);
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service->RemoveExpiredDowntimes();
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}
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}
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/**
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* @threadsafety Always.
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*/
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bool Service::IsInDowntime(void) const
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{
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Dictionary::Ptr downtimes = GetDowntimes();
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if (!downtimes)
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return false;
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ObjectLock olock(downtimes);
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Dictionary::Ptr downtime;
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BOOST_FOREACH(boost::tie(boost::tuples::ignore, downtime), downtimes) {
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if (Service::IsDowntimeActive(downtime))
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return true;
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}
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return false;
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}
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