icinga2/lib/icinga/timeperiod.cpp

318 lines
8.7 KiB
C++

/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012 Icinga Development Team (http://www.icinga.org/) *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#include "i2-icinga.h"
using namespace icinga;
REGISTER_TYPE(TimePeriod);
REGISTER_SCRIPTFUNCTION(EmptyTimePeriod, &TimePeriod::EmptyTimePeriodUpdate);
REGISTER_SCRIPTFUNCTION(EvenMinutesTimePeriod, &TimePeriod::EvenMinutesTimePeriodUpdate);
Timer::Ptr TimePeriod::m_UpdateTimer;
TimePeriod::TimePeriod(const Dictionary::Ptr& serializedUpdate)
: DynamicObject(serializedUpdate)
{
RegisterAttribute("valid_begin", Attribute_Replicated, &m_ValidBegin);
RegisterAttribute("valid_end", Attribute_Replicated, &m_ValidEnd);
RegisterAttribute("segments", Attribute_Replicated, &m_Segments);
if (!m_UpdateTimer) {
m_UpdateTimer = boost::make_shared<Timer>();
m_UpdateTimer->SetInterval(300);
m_UpdateTimer->OnTimerExpired.connect(boost::bind(&TimePeriod::UpdateTimerHandler));
m_UpdateTimer->Start();
}
}
void TimePeriod::Start(void)
{
/* Pre-fill the time period for the next 24 hours. */
double now = Utility::GetTime();
UpdateRegion(now, now + 24 * 3600);
}
/**
* @threadsafety Always.
*/
TimePeriod::Ptr TimePeriod::GetByName(const String& name)
{
DynamicObject::Ptr configObject = DynamicObject::GetObject("TimePeriod", name);
return dynamic_pointer_cast<TimePeriod>(configObject);
}
void TimePeriod::AddSegment(double begin, double end)
{
ASSERT(OwnsLock());
if (m_ValidBegin.IsEmpty() || begin < m_ValidBegin)
m_ValidBegin = begin;
if (m_ValidEnd.IsEmpty() || end > m_ValidEnd)
m_ValidEnd = end;
Array::Ptr segments = m_Segments;
if (segments) {
/* Try to merge the new segment into an existing segment. */
ObjectLock dlock(segments);
BOOST_FOREACH(const Dictionary::Ptr& segment, segments) {
if (segment->Get("begin") <= begin && segment->Get("end") >= end)
return; /* New segment is fully contained in this segment. */
if (segment->Get("begin") < begin && segment->Get("end") > begin) {
segment->Set("end", end); /* Extend an existing segment. */
return;
}
if (segment->Get("begin") > begin && segment->Get("begin") < end) {
segment->Set("begin", begin); /* Extend an existing segment. */
return;
}
}
}
/* Create new segment if we weren't able to merge this into an existing segment. */
Dictionary::Ptr segment = boost::make_shared<Dictionary>();
segment->Set("begin", begin);
segment->Set("end", end);
if (!segments) {
segments = boost::make_shared<Array>();
m_Segments = segments;
}
segments->Add(segment);
Touch("segments");
}
void TimePeriod::AddSegment(const Dictionary::Ptr& segment)
{
AddSegment(segment->Get("begin"), segment->Get("end"));
}
void TimePeriod::RemoveSegment(double begin, double end)
{
ASSERT(OwnsLock());
if (m_ValidBegin.IsEmpty() || begin < m_ValidBegin)
m_ValidBegin = begin;
if (m_ValidEnd.IsEmpty() || end > m_ValidEnd)
m_ValidEnd = end;
Array::Ptr segments = m_Segments;
if (!segments)
return;
Array::Ptr newSegments = boost::make_shared<Array>();
/* Try to split or adjust an existing segment. */
ObjectLock dlock(segments);
BOOST_FOREACH(const Dictionary::Ptr& segment, segments) {
/* Fully contained in the specified range? */
if (segment->Get("begin") >= begin && segment->Get("end") <= end)
continue;
/* Not overlapping at all? */
if (segment->Get("end") < begin || segment->Get("begin") > end) {
newSegments->Add(segment);
continue;
}
/* Adjust the begin/end timestamps so as to not overlap with the specified range. */
if (segment->Get("begin") < end)
segment->Set("begin", end);
if (segment->Get("end") > begin)
segment->Set("end", begin);
newSegments->Add(segment);
}
m_Segments = newSegments;
Touch("segments");
}
void TimePeriod::PurgeSegments(double end)
{
ASSERT(OwnsLock());
if (m_ValidBegin.IsEmpty() || end < m_ValidBegin)
return;
m_ValidBegin = end;
Array::Ptr segments = m_Segments;
if (!segments)
return;
Array::Ptr newSegments = boost::make_shared<Array>();
/* Remove old segments. */
ObjectLock dlock(segments);
BOOST_FOREACH(const Dictionary::Ptr& segment, segments) {
if (segment->Get("end") >= end)
newSegments->Add(segment);
}
m_Segments = newSegments;
Touch("segments");
}
void TimePeriod::UpdateRegion(double begin, double end)
{
if (begin < m_ValidEnd)
begin = m_ValidEnd;
if (end < m_ValidEnd)
return;
TimePeriod::Ptr self = GetSelf();
vector<Value> arguments;
arguments.push_back(self);
arguments.push_back(begin);
arguments.push_back(end);
ScriptTask::Ptr task = MakeMethodTask("update", arguments);
if (!task) {
Logger::Write(LogWarning, "icinga", "TimePeriod object '" + GetName() + "' doesn't have an 'update' method.");
return;
}
task->Start();
Array::Ptr segments = task->GetResult();
{
ObjectLock olock(this);
RemoveSegment(begin, end);
BOOST_FOREACH(const Dictionary::Ptr& segment, segments) {
AddSegment(segment);
}
}
}
bool TimePeriod::IsInside(double ts) const
{
ObjectLock olock(this);
if (m_ValidBegin.IsEmpty() || ts < m_ValidBegin || m_ValidEnd.IsEmpty() || ts > m_ValidEnd)
return true; /* Assume that all invalid regions are "inside". */
Array::Ptr segments = m_Segments;
if (segments) {
ObjectLock dlock(segments);
BOOST_FOREACH(const Dictionary::Ptr& segment, segments) {
if (ts > segment->Get("begin") && ts < segment->Get("end"))
return true;
}
}
return false;
}
double TimePeriod::FindNextTransition(double begin)
{
ObjectLock olock(this);
Array::Ptr segments = m_Segments;
double closestTransition = -1;
if (segments) {
ObjectLock dlock(segments);
BOOST_FOREACH(const Dictionary::Ptr& segment, segments) {
if (segment->Get("begin") > begin && (segment->Get("begin") < closestTransition || closestTransition == -1))
closestTransition = segment->Get("begin");
if (segment->Get("end") > begin && (segment->Get("end") < closestTransition || closestTransition == -1))
closestTransition = segment->Get("end");
}
}
return closestTransition;
}
void TimePeriod::UpdateTimerHandler(void)
{
double now = Utility::GetTime();
BOOST_FOREACH(const DynamicObject::Ptr& object, DynamicType::GetObjects("TimePeriod")) {
TimePeriod::Ptr tp = static_pointer_cast<TimePeriod>(object);
/* Only update time periods that have been defined on this node. */
if (!ConfigItem::GetObject("TimePeriod", tp->GetName()))
continue;
{
ObjectLock olock(tp);
tp->PurgeSegments(now - 3600);
}
if (tp->m_ValidEnd < now + 3 * 3600)
tp->UpdateRegion(tp->m_ValidEnd, tp->m_ValidEnd + 24 * 3600);
}
}
void TimePeriod::EmptyTimePeriodUpdate(const ScriptTask::Ptr& task, const vector<Value>& arguments)
{
if (arguments.size() < 3)
BOOST_THROW_EXCEPTION(runtime_error("Expected 3 arguments."));
TimePeriod::Ptr tp = arguments[0];
double begin = arguments[1];
double end = arguments[2];
Array::Ptr segments = boost::make_shared<Array>();
task->FinishResult(segments);
}
void TimePeriod::EvenMinutesTimePeriodUpdate(const ScriptTask::Ptr& task, const vector<Value>& arguments)
{
if (arguments.size() < 3)
BOOST_THROW_EXCEPTION(runtime_error("Expected 3 arguments."));
TimePeriod::Ptr tp = arguments[0];
double begin = arguments[1];
double end = arguments[2];
Array::Ptr segments = boost::make_shared<Array>();
for (long t = begin; t < end; t += 60) {
if ((t / 60) % 2 == 0) {
Dictionary::Ptr segment = boost::make_shared<Dictionary>();
segment->Set("begin", t);
segment->Set("end", t + 60);
segments->Add(segment);
}
}
task->FinishResult(segments);
}