mirror of https://github.com/Icinga/icinga2.git
340 lines
9.2 KiB
C++
340 lines
9.2 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/timeperiod.h"
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#include "config/configitem.h"
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#include "base/dynamictype.h"
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#include "base/scriptfunction.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/smart_ptr/make_shared.hpp>
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#include <boost/foreach.hpp>
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using namespace icinga;
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REGISTER_TYPE(TimePeriod);
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REGISTER_SCRIPTFUNCTION(EmptyTimePeriod, &TimePeriod::EmptyTimePeriodUpdate);
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REGISTER_SCRIPTFUNCTION(EvenMinutesTimePeriod, &TimePeriod::EvenMinutesTimePeriodUpdate);
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static Timer::Ptr l_UpdateTimer;
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TimePeriod::TimePeriod(const Dictionary::Ptr& serializedUpdate)
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: DynamicObject(serializedUpdate)
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{
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RegisterAttribute("valid_begin", Attribute_Replicated, &m_ValidBegin);
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RegisterAttribute("valid_end", Attribute_Replicated, &m_ValidEnd);
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RegisterAttribute("segments", Attribute_Replicated, &m_Segments);
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if (!l_UpdateTimer) {
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l_UpdateTimer = boost::make_shared<Timer>();
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l_UpdateTimer->SetInterval(300);
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l_UpdateTimer->OnTimerExpired.connect(boost::bind(&TimePeriod::UpdateTimerHandler));
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l_UpdateTimer->Start();
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}
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}
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void TimePeriod::Start(void)
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{
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/* Pre-fill the time period for the next 24 hours. */
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double now = Utility::GetTime();
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UpdateRegion(now, now + 24 * 3600);
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}
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/**
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* @threadsafety Always.
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*/
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TimePeriod::Ptr TimePeriod::GetByName(const String& name)
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{
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DynamicObject::Ptr configObject = DynamicObject::GetObject("TimePeriod", name);
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return dynamic_pointer_cast<TimePeriod>(configObject);
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}
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void TimePeriod::AddSegment(double begin, double end)
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{
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ASSERT(OwnsLock());
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if (m_ValidBegin.IsEmpty() || begin < m_ValidBegin) {
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m_ValidBegin = begin;
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Touch("valid_begin");
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}
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if (m_ValidEnd.IsEmpty() || end > m_ValidEnd) {
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m_ValidEnd = end;
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Touch("valid_end");
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}
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Array::Ptr segments = m_Segments;
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if (segments) {
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/* Try to merge the new segment into an existing segment. */
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ObjectLock dlock(segments);
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BOOST_FOREACH(const Dictionary::Ptr& segment, segments) {
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if (segment->Get("begin") <= begin && segment->Get("end") >= end)
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return; /* New segment is fully contained in this segment. */
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if (segment->Get("begin") < begin && segment->Get("end") > begin) {
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segment->Set("end", end); /* Extend an existing segment. */
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return;
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}
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if (segment->Get("begin") > begin && segment->Get("begin") < end) {
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segment->Set("begin", begin); /* Extend an existing segment. */
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return;
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}
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}
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}
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/* Create new segment if we weren't able to merge this into an existing segment. */
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Dictionary::Ptr segment = boost::make_shared<Dictionary>();
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segment->Set("begin", begin);
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segment->Set("end", end);
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if (!segments) {
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segments = boost::make_shared<Array>();
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m_Segments = segments;
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}
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segments->Add(segment);
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Touch("segments");
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}
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void TimePeriod::AddSegment(const Dictionary::Ptr& segment)
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{
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AddSegment(segment->Get("begin"), segment->Get("end"));
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}
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void TimePeriod::RemoveSegment(double begin, double end)
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{
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ASSERT(OwnsLock());
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if (m_ValidBegin.IsEmpty() || begin < m_ValidBegin) {
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m_ValidBegin = begin;
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Touch("valid_begin");
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}
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if (m_ValidEnd.IsEmpty() || end > m_ValidEnd) {
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m_ValidEnd = end;
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Touch("valid_end");
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}
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Array::Ptr segments = m_Segments;
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if (!segments)
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return;
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Array::Ptr newSegments = boost::make_shared<Array>();
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/* Try to split or adjust an existing segment. */
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ObjectLock dlock(segments);
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BOOST_FOREACH(const Dictionary::Ptr& segment, segments) {
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/* Fully contained in the specified range? */
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if (segment->Get("begin") >= begin && segment->Get("end") <= end)
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continue;
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/* Not overlapping at all? */
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if (segment->Get("end") < begin || segment->Get("begin") > end) {
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newSegments->Add(segment);
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continue;
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}
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/* Adjust the begin/end timestamps so as to not overlap with the specified range. */
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if (segment->Get("begin") < end)
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segment->Set("begin", end);
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if (segment->Get("end") > begin)
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segment->Set("end", begin);
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newSegments->Add(segment);
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}
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m_Segments = newSegments;
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Touch("segments");
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}
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void TimePeriod::PurgeSegments(double end)
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{
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ASSERT(OwnsLock());
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if (m_ValidBegin.IsEmpty() || end < m_ValidBegin)
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return;
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m_ValidBegin = end;
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Touch("valid_begin");
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Array::Ptr segments = m_Segments;
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if (!segments)
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return;
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Array::Ptr newSegments = boost::make_shared<Array>();
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/* Remove old segments. */
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ObjectLock dlock(segments);
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BOOST_FOREACH(const Dictionary::Ptr& segment, segments) {
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if (segment->Get("end") >= end)
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newSegments->Add(segment);
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}
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m_Segments = newSegments;
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Touch("segments");
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}
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void TimePeriod::UpdateRegion(double begin, double end)
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{
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if (begin < m_ValidEnd)
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begin = m_ValidEnd;
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if (end < m_ValidEnd)
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return;
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TimePeriod::Ptr self = GetSelf();
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std::vector<Value> arguments;
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arguments.push_back(self);
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arguments.push_back(begin);
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arguments.push_back(end);
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ScriptTask::Ptr task = MakeMethodTask("update", arguments);
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if (!task) {
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Log(LogWarning, "icinga", "TimePeriod object '" + GetName() + "' doesn't have an 'update' method.");
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return;
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}
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task->Start();
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Array::Ptr segments = task->GetResult();
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{
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ObjectLock olock(this);
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RemoveSegment(begin, end);
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ObjectLock dlock(segments);
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BOOST_FOREACH(const Dictionary::Ptr& segment, segments) {
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AddSegment(segment);
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}
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}
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}
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bool TimePeriod::IsInside(double ts) const
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{
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ObjectLock olock(this);
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if (m_ValidBegin.IsEmpty() || ts < m_ValidBegin || m_ValidEnd.IsEmpty() || ts > m_ValidEnd)
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return true; /* Assume that all invalid regions are "inside". */
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Array::Ptr segments = m_Segments;
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if (segments) {
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ObjectLock dlock(segments);
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BOOST_FOREACH(const Dictionary::Ptr& segment, segments) {
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if (ts > segment->Get("begin") && ts < segment->Get("end"))
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return true;
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}
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}
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return false;
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}
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double TimePeriod::FindNextTransition(double begin)
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{
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ObjectLock olock(this);
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Array::Ptr segments = m_Segments;
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double closestTransition = -1;
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if (segments) {
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ObjectLock dlock(segments);
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BOOST_FOREACH(const Dictionary::Ptr& segment, segments) {
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if (segment->Get("begin") > begin && (segment->Get("begin") < closestTransition || closestTransition == -1))
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closestTransition = segment->Get("begin");
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if (segment->Get("end") > begin && (segment->Get("end") < closestTransition || closestTransition == -1))
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closestTransition = segment->Get("end");
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}
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}
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return closestTransition;
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}
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void TimePeriod::UpdateTimerHandler(void)
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{
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double now = Utility::GetTime();
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BOOST_FOREACH(const DynamicObject::Ptr& object, DynamicType::GetObjects("TimePeriod")) {
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TimePeriod::Ptr tp = static_pointer_cast<TimePeriod>(object);
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/* Only update time periods that have been defined on this node. */
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if (!ConfigItem::GetObject("TimePeriod", tp->GetName()))
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continue;
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double valid_end;
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{
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ObjectLock olock(tp);
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tp->PurgeSegments(now - 3600);
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valid_end = tp->m_ValidEnd;
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}
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if (valid_end < now + 3 * 3600)
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tp->UpdateRegion(valid_end, now + 24 * 3600);
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}
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}
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void TimePeriod::EmptyTimePeriodUpdate(const ScriptTask::Ptr& task, const std::vector<Value>& arguments)
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{
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if (arguments.size() < 3)
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BOOST_THROW_EXCEPTION(std::runtime_error("Expected 3 arguments."));
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// TimePeriod::Ptr tp = arguments[0];
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// double begin = arguments[1];
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// double end = arguments[2];
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Array::Ptr segments = boost::make_shared<Array>();
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task->FinishResult(segments);
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}
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void TimePeriod::EvenMinutesTimePeriodUpdate(const ScriptTask::Ptr& task, const std::vector<Value>& arguments)
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{
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if (arguments.size() < 3)
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BOOST_THROW_EXCEPTION(std::runtime_error("Expected 3 arguments."));
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TimePeriod::Ptr tp = arguments[0];
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double begin = arguments[1];
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double end = arguments[2];
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Array::Ptr segments = boost::make_shared<Array>();
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for (long t = begin / 60 - 1; t * 60 < end; t++) {
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if ((t % 2) == 0) {
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Dictionary::Ptr segment = boost::make_shared<Dictionary>();
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segment->Set("begin", t * 60);
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segment->Set("end", (t + 1) * 60);
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segments->Add(segment);
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}
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}
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task->FinishResult(segments);
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}
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