icinga2/lib/icinga/service-downtime.cpp

428 lines
11 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 "icinga/service.h"
#include "icinga/downtimemessage.h"
#include "remoting/endpointmanager.h"
#include "base/dynamictype.h"
#include "base/objectlock.h"
#include "base/logger_fwd.h"
#include "base/timer.h"
#include "base/utility.h"
#include <boost/tuple/tuple.hpp>
#include <boost/smart_ptr/make_shared.hpp>
#include <boost/foreach.hpp>
using namespace icinga;
static int l_NextDowntimeID = 1;
static boost::mutex l_DowntimeMutex;
static std::map<int, String> l_LegacyDowntimesCache;
static std::map<String, Service::WeakPtr> l_DowntimesCache;
static bool l_DowntimesCacheNeedsUpdate = false;
static Timer::Ptr l_DowntimesCacheTimer;
static Timer::Ptr l_DowntimesExpireTimer;
boost::signals2::signal<void (const Service::Ptr&, DowntimeState)> Service::OnDowntimeChanged;
void Service::DowntimeRequestHandler(const RequestMessage& request)
{
DowntimeMessage params;
if (!request.GetParams(&params))
return;
String svcname = params.GetService();
Service::Ptr service = Service::GetByName(svcname);
OnDowntimeChanged(service, params.GetState());
}
int Service::GetNextDowntimeID(void)
{
boost::mutex::scoped_lock lock(l_DowntimeMutex);
return l_NextDowntimeID;
}
Dictionary::Ptr Service::GetDowntimes(void) const
{
return m_Downtimes;
}
String Service::AddDowntime(const String& author, const String& comment,
double startTime, double endTime, bool fixed,
const String& triggeredBy, double duration)
{
Dictionary::Ptr downtime = boost::make_shared<Dictionary>();
downtime->Set("entry_time", Utility::GetTime());
downtime->Set("author", author);
downtime->Set("comment", comment);
downtime->Set("start_time", startTime);
downtime->Set("end_time", endTime);
downtime->Set("fixed", fixed);
downtime->Set("duration", duration);
downtime->Set("triggered_by", triggeredBy);
downtime->Set("triggers", boost::make_shared<Dictionary>());
downtime->Set("trigger_time", 0);
int legacy_id;
{
boost::mutex::scoped_lock lock(l_DowntimeMutex);
legacy_id = l_NextDowntimeID++;
}
downtime->Set("legacy_id", legacy_id);
if (!triggeredBy.IsEmpty()) {
Service::Ptr otherOwner = GetOwnerByDowntimeID(triggeredBy);
Dictionary::Ptr otherDowntimes = otherOwner->Get("downtimes");
Dictionary::Ptr otherDowntime = otherDowntimes->Get(triggeredBy);
Dictionary::Ptr triggers = otherDowntime->Get("triggers");
{
ObjectLock olock(otherOwner);
triggers->Set(triggeredBy, triggeredBy);
otherOwner->Touch("downtimes");
}
}
Dictionary::Ptr downtimes;
{
ObjectLock olock(this);
downtimes = m_Downtimes;
if (!downtimes)
downtimes = boost::make_shared<Dictionary>();
m_Downtimes = downtimes;
}
String id = Utility::NewUniqueID();
downtimes->Set(id, downtime);
{
ObjectLock olock(this);
Touch("downtimes");
}
(void) AddComment(CommentDowntime, author, comment, endTime);
return id;
}
void Service::RemoveDowntime(const String& id)
{
Service::Ptr owner = GetOwnerByDowntimeID(id);
if (!owner)
return;
Dictionary::Ptr downtimes = owner->GetDowntimes();
if (!downtimes)
return;
{
ObjectLock olock(owner);
downtimes->Remove(id);
RequestMessage rm;
rm.SetMethod("icinga::Downtime");
DowntimeMessage params;
params.SetService(owner->GetName());
params.SetState(DowntimeCancelled);
rm.SetParams(params);
EndpointManager::GetInstance()->SendMulticastMessage(rm);
owner->Touch("downtimes");
}
}
void Service::TriggerDowntimes(void)
{
Dictionary::Ptr downtimes = GetDowntimes();
if (!downtimes)
return;
std::vector<String> ids;
{
ObjectLock olock(downtimes);
String id;
BOOST_FOREACH(boost::tie(id, boost::tuples::ignore), downtimes) {
ids.push_back(id);
}
}
BOOST_FOREACH(const String& id, ids) {
TriggerDowntime(id);
}
}
void Service::TriggerDowntime(const String& id)
{
Service::Ptr owner = GetOwnerByDowntimeID(id);
Dictionary::Ptr downtime = GetDowntimeByID(id);
if (!downtime)
return;
double now = Utility::GetTime();
if (now < downtime->Get("start_time") ||
now > downtime->Get("end_time"))
return;
if (downtime->Get("trigger_time") == 0)
downtime->Set("trigger_time", now);
Dictionary::Ptr triggers = downtime->Get("triggers");
ObjectLock olock(triggers);
String tid;
BOOST_FOREACH(boost::tie(tid, boost::tuples::ignore), triggers) {
TriggerDowntime(tid);
}
RequestMessage rm;
rm.SetMethod("icinga::Downtime");
DowntimeMessage params;
params.SetService(owner->GetName());
params.SetState(DowntimeStarted);
rm.SetParams(params);
EndpointManager::GetInstance()->SendMulticastMessage(rm);
owner->Touch("downtimes");
}
String Service::GetDowntimeIDFromLegacyID(int id)
{
boost::mutex::scoped_lock lock(l_DowntimeMutex);
std::map<int, String>::iterator it = l_LegacyDowntimesCache.find(id);
if (it == l_LegacyDowntimesCache.end())
return Empty;
return it->second;
}
Service::Ptr Service::GetOwnerByDowntimeID(const String& id)
{
boost::mutex::scoped_lock lock(l_DowntimeMutex);
return l_DowntimesCache[id].lock();
}
Dictionary::Ptr Service::GetDowntimeByID(const String& id)
{
Service::Ptr owner = GetOwnerByDowntimeID(id);
if (!owner)
return Dictionary::Ptr();
Dictionary::Ptr downtimes = owner->GetDowntimes();
if (downtimes)
return downtimes->Get(id);
return Dictionary::Ptr();
}
bool Service::IsDowntimeActive(const Dictionary::Ptr& downtime)
{
double now = Utility::GetTime();
if (now < downtime->Get("start_time") ||
now > downtime->Get("end_time"))
return false;
if (static_cast<bool>(downtime->Get("fixed")))
return true;
double triggerTime = downtime->Get("trigger_time");
if (triggerTime == 0)
return false;
return (triggerTime + downtime->Get("duration") < now);
}
bool Service::IsDowntimeExpired(const Dictionary::Ptr& downtime)
{
return (downtime->Get("end_time") < Utility::GetTime());
}
void Service::InvalidateDowntimesCache(void)
{
boost::mutex::scoped_lock lock(l_DowntimeMutex);
if (l_DowntimesCacheNeedsUpdate)
return; /* Someone else has already requested a refresh. */
if (!l_DowntimesCacheTimer) {
l_DowntimesCacheTimer = boost::make_shared<Timer>();
l_DowntimesCacheTimer->SetInterval(0.5);
l_DowntimesCacheTimer->OnTimerExpired.connect(boost::bind(&Service::RefreshDowntimesCache));
l_DowntimesCacheTimer->Start();
}
l_DowntimesCacheNeedsUpdate = true;
}
void Service::RefreshDowntimesCache(void)
{
{
boost::mutex::scoped_lock lock(l_DowntimeMutex);
if (!l_DowntimesCacheNeedsUpdate)
return;
l_DowntimesCacheNeedsUpdate = false;
}
Log(LogDebug, "icinga", "Updating Service downtimes cache.");
std::map<int, String> newLegacyDowntimesCache;
std::map<String, Service::WeakPtr> newDowntimesCache;
BOOST_FOREACH(const DynamicObject::Ptr& object, DynamicType::GetObjects("Service")) {
Service::Ptr service = dynamic_pointer_cast<Service>(object);
Dictionary::Ptr downtimes = service->GetDowntimes();
if (!downtimes)
continue;
ObjectLock olock(downtimes);
String id;
Dictionary::Ptr downtime;
BOOST_FOREACH(boost::tie(id, downtime), downtimes) {
int legacy_id = downtime->Get("legacy_id");
if (legacy_id >= l_NextDowntimeID)
l_NextDowntimeID = legacy_id + 1;
if (newLegacyDowntimesCache.find(legacy_id) != newLegacyDowntimesCache.end()) {
/* The legacy_id is already in use by another downtime;
* this shouldn't usually happen - assign it a new ID. */
legacy_id = l_NextDowntimeID++;
downtime->Set("legacy_id", legacy_id);
service->Touch("downtimes");
}
newLegacyDowntimesCache[legacy_id] = id;
newDowntimesCache[id] = service;
}
}
boost::mutex::scoped_lock lock(l_DowntimeMutex);
l_DowntimesCache.swap(newDowntimesCache);
l_LegacyDowntimesCache.swap(newLegacyDowntimesCache);
if (!l_DowntimesExpireTimer) {
l_DowntimesExpireTimer = boost::make_shared<Timer>();
l_DowntimesExpireTimer->SetInterval(300);
l_DowntimesExpireTimer->OnTimerExpired.connect(boost::bind(&Service::DowntimesExpireTimerHandler));
l_DowntimesExpireTimer->Start();
}
}
void Service::RemoveExpiredDowntimes(void)
{
Dictionary::Ptr downtimes = GetDowntimes();
if (!downtimes)
return;
std::vector<String> expiredDowntimes;
{
ObjectLock olock(downtimes);
String id;
Dictionary::Ptr downtime;
BOOST_FOREACH(boost::tie(id, downtime), downtimes) {
if (IsDowntimeExpired(downtime))
expiredDowntimes.push_back(id);
}
}
if (!expiredDowntimes.empty()) {
BOOST_FOREACH(const String& id, expiredDowntimes) {
RequestMessage rm;
rm.SetMethod("icinga::Downtime");
DowntimeMessage params;
params.SetService(GetName());
params.SetState(DowntimeStopped);
rm.SetParams(params);
EndpointManager::GetInstance()->SendMulticastMessage(rm);
downtimes->Remove(id);
}
{
ObjectLock olock(this);
Touch("downtimes");
}
}
}
void Service::DowntimesExpireTimerHandler(void)
{
BOOST_FOREACH(const DynamicObject::Ptr& object, DynamicType::GetObjects("Service")) {
Service::Ptr service = dynamic_pointer_cast<Service>(object);
service->RemoveExpiredDowntimes();
}
}
bool Service::IsInDowntime(void) const
{
Dictionary::Ptr downtimes = GetDowntimes();
if (!downtimes)
return false;
ObjectLock olock(downtimes);
Dictionary::Ptr downtime;
BOOST_FOREACH(boost::tie(boost::tuples::ignore, downtime), downtimes) {
if (Service::IsDowntimeActive(downtime))
return true;
}
return false;
}