icinga2/lib/icinga/servicegroup.cpp

143 lines
4.3 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"
#include "icinga/servicegroup.h"
#include "base/dynamictype.h"
#include "base/objectlock.h"
#include "base/logger_fwd.h"
#include "base/timer.h"
#include "base/utility.h"
#include <boost/smart_ptr/make_shared.hpp>
#include <boost/foreach.hpp>
using namespace icinga;
static boost::mutex l_Mutex;
static std::map<String, std::vector<Service::WeakPtr> > l_MembersCache;
static bool l_MembersCacheNeedsUpdate = false;
static Timer::Ptr l_MembersCacheTimer;
REGISTER_TYPE(ServiceGroup);
ServiceGroup::ServiceGroup(const Dictionary::Ptr& serializedUpdate)
: DynamicObject(serializedUpdate)
{
RegisterAttribute("display_name", Attribute_Config, &m_DisplayName);
}
ServiceGroup::~ServiceGroup(void)
{
InvalidateMembersCache();
}
void ServiceGroup::OnRegistrationCompleted(void)
{
ASSERT(!OwnsLock());
InvalidateMembersCache();
}
String ServiceGroup::GetDisplayName(void) const
{
if (!m_DisplayName.Get().IsEmpty())
return m_DisplayName;
else
return GetName();
}
ServiceGroup::Ptr ServiceGroup::GetByName(const String& name)
{
DynamicObject::Ptr configObject = DynamicObject::GetObject("ServiceGroup", name);
if (!configObject)
BOOST_THROW_EXCEPTION(std::invalid_argument("ServiceGroup '" + name + "' does not exist."));
return dynamic_pointer_cast<ServiceGroup>(configObject);
}
std::set<Service::Ptr> ServiceGroup::GetMembers(void) const
{
std::set<Service::Ptr> services;
{
boost::mutex::scoped_lock lock(l_Mutex);
BOOST_FOREACH(const Service::WeakPtr& wservice, l_MembersCache[GetName()]) {
Service::Ptr service = wservice.lock();
if (!service)
continue;
services.insert(service);
}
}
return services;
}
void ServiceGroup::InvalidateMembersCache(void)
{
boost::mutex::scoped_lock lock(l_Mutex);
if (l_MembersCacheNeedsUpdate)
return; /* Someone else has already requested a refresh. */
if (!l_MembersCacheTimer) {
l_MembersCacheTimer = boost::make_shared<Timer>();
l_MembersCacheTimer->SetInterval(0.5);
l_MembersCacheTimer->OnTimerExpired.connect(boost::bind(&ServiceGroup::RefreshMembersCache));
l_MembersCacheTimer->Start();
}
l_MembersCacheNeedsUpdate = true;
}
void ServiceGroup::RefreshMembersCache(void)
{
{
boost::mutex::scoped_lock lock(l_Mutex);
if (!l_MembersCacheNeedsUpdate)
return;
l_MembersCacheNeedsUpdate = false;
}
Log(LogDebug, "icinga", "Updating ServiceGroup members cache.");
std::map<String, std::vector<Service::WeakPtr> > newMembersCache;
BOOST_FOREACH(const DynamicObject::Ptr& object, DynamicType::GetObjects("Service")) {
const Service::Ptr& service = static_pointer_cast<Service>(object);
Array::Ptr groups = service->GetGroups();
if (groups) {
ObjectLock mlock(groups);
BOOST_FOREACH(const Value& group, groups) {
newMembersCache[group].push_back(service);
}
}
}
boost::mutex::scoped_lock lock(l_Mutex);
l_MembersCache.swap(newMembersCache);
}