icinga2/lib/icinga/hostgroup.cpp

144 lines
3.9 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;
boost::mutex HostGroup::m_Mutex;
map<String, vector<Host::WeakPtr> > HostGroup::m_MembersCache;
bool HostGroup::m_MembersCacheValid = true;
REGISTER_TYPE(HostGroup, NULL);
HostGroup::HostGroup(const Dictionary::Ptr& properties)
: DynamicObject(properties)
{
RegisterAttribute("display_name", Attribute_Config, &m_DisplayName);
RegisterAttribute("notes_url", Attribute_Config, &m_NotesUrl);
RegisterAttribute("action_url", Attribute_Config, &m_ActionUrl);
}
String HostGroup::GetDisplayName(void) const
{
if (!m_DisplayName.IsEmpty())
return m_DisplayName;
else
return GetName();
}
String HostGroup::GetNotesUrl(void) const
{
return m_NotesUrl;
}
String HostGroup::GetActionUrl(void) const
{
return m_ActionUrl;
}
/**
* @threadsafety Always.
*/
bool HostGroup::Exists(const String& name)
{
return (DynamicObject::GetObject("HostGroup", name));
}
/**
* @threadsafety Always.
*/
HostGroup::Ptr HostGroup::GetByName(const String& name)
{
DynamicObject::Ptr configObject = DynamicObject::GetObject("HostGroup", name);
if (!configObject)
BOOST_THROW_EXCEPTION(invalid_argument("HostGroup '" + name + "' does not exist."));
return dynamic_pointer_cast<HostGroup>(configObject);
}
set<Host::Ptr> HostGroup::GetMembers(const HostGroup::Ptr& self)
{
String name;
{
ObjectLock olock(self);
name = self->GetName();
}
set<Host::Ptr> hosts;
{
boost::mutex::scoped_lock lock(m_Mutex);
ValidateMembersCache();
BOOST_FOREACH(const Host::WeakPtr& hst, m_MembersCache[name]) {
Host::Ptr host = hst.lock();
if (!host)
continue;
hosts.insert(host);
}
}
return hosts;
}
void HostGroup::InvalidateMembersCache(void)
{
boost::mutex::scoped_lock lock(m_Mutex);
m_MembersCacheValid = false;
m_MembersCache.clear();
}
/**
* @threadsafety Caller must hold m_Mutex.
*/
void HostGroup::ValidateMembersCache(void)
{
if (m_MembersCacheValid)
return;
m_MembersCache.clear();
BOOST_FOREACH(const DynamicObject::Ptr& object, DynamicType::GetObjects("Host")) {
const Host::Ptr& host = static_pointer_cast<Host>(object);
ObjectLock olock(host);
Dictionary::Ptr dict;
dict = host->GetGroups();
if (dict) {
ObjectLock mlock(dict);
Value hostgroup;
BOOST_FOREACH(tie(tuples::ignore, hostgroup), dict) {
if (!HostGroup::Exists(hostgroup))
Logger::Write(LogWarning, "icinga", "Host group '" + static_cast<String>(hostgroup) + "' used but not defined.");
m_MembersCache[hostgroup].push_back(host);
}
}
}
m_MembersCacheValid = true;
}