icinga2/lib/icinga/servicegroup.cpp

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/******************************************************************************
* Icinga 2 *
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* Copyright (C) 2012-2016 Icinga Development Team (https://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. *
******************************************************************************/
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#include "icinga/servicegroup.hpp"
#include "icinga/servicegroup.tcpp"
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#include "config/objectrule.hpp"
#include "config/configitem.hpp"
#include "base/configtype.hpp"
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#include "base/objectlock.hpp"
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#include "base/logger.hpp"
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#include "base/context.hpp"
#include "base/workqueue.hpp"
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#include <boost/foreach.hpp>
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using namespace icinga;
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REGISTER_TYPE(ServiceGroup);
INITIALIZE_ONCE(&ServiceGroup::RegisterObjectRuleHandler);
void ServiceGroup::RegisterObjectRuleHandler(void)
{
ObjectRule::RegisterType("ServiceGroup");
}
bool ServiceGroup::EvaluateObjectRule(const Service::Ptr& service, const ConfigItem::Ptr& group)
{
String group_name = group->GetName();
CONTEXT("Evaluating rule for group '" + group_name + "'");
Host::Ptr host = service->GetHost();
ScriptFrame frame;
if (group->GetScope())
group->GetScope()->CopyTo(frame.Locals);
frame.Locals->Set("host", host);
frame.Locals->Set("service", service);
if (!group->GetFilter()->Evaluate(frame).GetValue().ToBool())
return false;
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Log(LogDebug, "ServiceGroup")
<< "Assigning membership for group '" << group_name << "' to service '" << service->GetName() << "'";
Array::Ptr groups = service->GetGroups();
groups->Add(group_name);
return true;
}
void ServiceGroup::EvaluateObjectRules(const Service::Ptr& service)
{
CONTEXT("Evaluating group membership for service '" + service->GetName() + "'");
BOOST_FOREACH(const ConfigItem::Ptr& group, ConfigItem::GetItems("ServiceGroup"))
{
if (!group->GetFilter())
continue;
EvaluateObjectRule(service, group);
}
}
std::set<Service::Ptr> ServiceGroup::GetMembers(void) const
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{
boost::mutex::scoped_lock lock(m_ServiceGroupMutex);
return m_Members;
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}
void ServiceGroup::AddMember(const Service::Ptr& service)
{
service->AddGroup(GetName());
boost::mutex::scoped_lock lock(m_ServiceGroupMutex);
m_Members.insert(service);
}
void ServiceGroup::RemoveMember(const Service::Ptr& service)
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{
boost::mutex::scoped_lock lock(m_ServiceGroupMutex);
m_Members.erase(service);
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}
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bool ServiceGroup::ResolveGroupMembership(const Service::Ptr& service, bool add, int rstack) {
if (add && rstack > 20) {
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Log(LogWarning, "ServiceGroup")
<< "Too many nested groups for group '" << GetName() << "': Service '"
<< service->GetName() << "' membership assignment failed.";
return false;
}
Array::Ptr groups = GetGroups();
if (groups && groups->GetLength() > 0) {
ObjectLock olock(groups);
BOOST_FOREACH(const String& name, groups) {
ServiceGroup::Ptr group = ServiceGroup::GetByName(name);
if (group && !group->ResolveGroupMembership(service, add, rstack + 1))
return false;
}
}
if (add)
AddMember(service);
else
RemoveMember(service);
return true;
}