mirror of https://github.com/Icinga/icinga2.git
293 lines
8.2 KiB
C++
293 lines
8.2 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2014 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/objectlock.h"
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#include "base/logger_fwd.h"
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#include "base/timer.h"
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#include "base/utility.h"
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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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static Timer::Ptr l_UpdateTimer;
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INITIALIZE_ONCE(&TimePeriod::StaticInitialize);
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void TimePeriod::StaticInitialize(void)
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{
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l_UpdateTimer = 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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void TimePeriod::Start(void)
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{
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DynamicObject::Start();
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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, true);
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Dump();
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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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Log(LogDebug, "icinga", "Adding segment '" + Utility::FormatDateTime("%c", begin) + "' <-> '" + Utility::FormatDateTime("%c", end) + "' to TimePeriod '" + GetName() + "'");
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if (GetValidBegin().IsEmpty() || begin < GetValidBegin())
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SetValidBegin(begin);
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if (GetValidEnd().IsEmpty() || end > GetValidEnd())
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SetValidEnd(end);
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Array::Ptr segments = GetSegments();
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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 = 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 = make_shared<Array>();
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SetSegments(segments);
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}
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segments->Add(segment);
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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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Log(LogDebug, "icinga", "Removing segment '" + Utility::FormatDateTime("%c", begin) + "' <-> '" + Utility::FormatDateTime("%c", end) + "' from TimePeriod '" + GetName() + "'");
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if (GetValidBegin().IsEmpty() || begin < GetValidBegin())
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SetValidBegin(begin);
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if (GetValidEnd().IsEmpty() || end > GetValidEnd())
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SetValidEnd(end);
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Array::Ptr segments = GetSegments();
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if (!segments)
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return;
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Array::Ptr newSegments = 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") > begin && segment->Get("begin") < end)
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segment->Set("begin", end);
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if (segment->Get("end") > begin && segment->Get("end") < end)
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segment->Set("end", begin);
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newSegments->Add(segment);
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}
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SetSegments(newSegments);
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Dump();
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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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Log(LogDebug, "icinga", "Purging segments older than '" + Utility::FormatDateTime("%c", end) + "' from TimePeriod '" + GetName() + "'");
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if (GetValidBegin().IsEmpty() || end < GetValidBegin())
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return;
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SetValidBegin(end);
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Array::Ptr segments = GetSegments();
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if (!segments)
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return;
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Array::Ptr newSegments = 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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SetSegments(newSegments);
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}
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void TimePeriod::UpdateRegion(double begin, double end, bool clearExisting)
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{
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if (!clearExisting) {
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if (begin < GetValidEnd())
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begin = GetValidEnd();
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if (end < GetValidEnd())
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return;
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}
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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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Array::Ptr segments = InvokeMethod("update", arguments);
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{
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ObjectLock olock(this);
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RemoveSegment(begin, end);
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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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AddSegment(segment);
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}
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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 (GetValidBegin().IsEmpty() || ts < GetValidBegin() || GetValidEnd().IsEmpty() || ts > GetValidEnd())
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return true; /* Assume that all invalid regions are "inside". */
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Array::Ptr segments = GetSegments();
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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 = GetSegments();
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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 TimePeriod::Ptr& tp, DynamicType::GetObjects<TimePeriod>()) {
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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->GetValidEnd();
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}
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tp->UpdateRegion(valid_end, now + 24 * 3600, false);
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tp->Dump();
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}
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}
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void TimePeriod::Dump(void)
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{
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Array::Ptr segments = GetSegments();
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Log(LogDebug, "icinga", "Dumping TimePeriod '" + GetName() + "'");
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Log(LogDebug, "icinga", "Valid from '" + Utility::FormatDateTime("%c", GetValidBegin()) + "' until '" + Utility::FormatDateTime("%c", GetValidEnd()));
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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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Log(LogDebug, "icinga", "Segment: " +
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Utility::FormatDateTime("%c", segment->Get("begin")) + " <-> " +
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Utility::FormatDateTime("%c", segment->Get("end")));
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}
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}
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Log(LogDebug, "icinga", "---");
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}
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