mirror of https://github.com/Icinga/icinga2.git
143 lines
4.4 KiB
C++
143 lines
4.4 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2014 Icinga Development Team (http://www.icinga.org) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software Foundation *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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******************************************************************************/
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#include "icinga/hostgroup.hpp"
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#include "config/objectrule.hpp"
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#include "base/dynamictype.hpp"
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#include "base/logger.hpp"
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#include "base/objectlock.hpp"
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#include "base/context.hpp"
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#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(HostGroup);
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INITIALIZE_ONCE(&HostGroup::RegisterObjectRuleHandler);
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void HostGroup::RegisterObjectRuleHandler(void)
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{
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ObjectRule::RegisterType("HostGroup", &HostGroup::EvaluateObjectRules);
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}
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bool HostGroup::EvaluateObjectRuleOne(const Host::Ptr& host, const ObjectRule& rule)
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{
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DebugInfo di = rule.GetDebugInfo();
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std::ostringstream msgbuf;
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msgbuf << "Evaluating 'object' rule (" << di << ")";
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CONTEXT(msgbuf.str());
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Dictionary::Ptr locals = make_shared<Dictionary>();
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locals->Set("host", host);
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if (!rule.EvaluateFilter(locals))
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return false;
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Log(LogDebug, "HostGroup")
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<< "Assigning membership for group '" << rule.GetName() << "' to host '" << host->GetName() << "' for rule " << di;
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String group_name = rule.GetName();
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HostGroup::Ptr group = HostGroup::GetByName(group_name);
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if (!group) {
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Log(LogCritical, "HostGroup")
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<< "Invalid membership assignment. Group '" << group_name << "' does not exist.";
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return false;
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}
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/* assign host group membership */
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group->ResolveGroupMembership(host, true);
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/* update groups attribute for apply */
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host->AddGroup(group_name);
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return true;
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}
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void HostGroup::EvaluateObjectRule(const ObjectRule& rule)
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{
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BOOST_FOREACH(const Host::Ptr& host, DynamicType::GetObjectsByType<Host>()) {
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CONTEXT("Evaluating group membership in '" + rule.GetName() + "' for host '" + host->GetName() + "'");
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EvaluateObjectRuleOne(host, rule);
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}
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}
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void HostGroup::EvaluateObjectRules(const std::vector<ObjectRule>& rules)
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{
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ParallelWorkQueue upq;
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BOOST_FOREACH(const ObjectRule& rule, rules) {
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upq.Enqueue(boost::bind(HostGroup::EvaluateObjectRule, boost::cref(rule)));
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}
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upq.Join();
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}
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std::set<Host::Ptr> HostGroup::GetMembers(void) const
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{
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boost::mutex::scoped_lock lock(m_HostGroupMutex);
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return m_Members;
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}
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void HostGroup::AddMember(const Host::Ptr& host)
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{
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boost::mutex::scoped_lock lock(m_HostGroupMutex);
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m_Members.insert(host);
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}
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void HostGroup::RemoveMember(const Host::Ptr& host)
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{
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boost::mutex::scoped_lock lock(m_HostGroupMutex);
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m_Members.erase(host);
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}
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bool HostGroup::ResolveGroupMembership(Host::Ptr const& host, bool add, int rstack) {
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if (add && rstack > 20) {
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Log(LogWarning, "HostGroup")
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<< "Too many nested groups for group '" << GetName() << "': Host '"
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<< host->GetName() << "' membership assignment failed.";
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return false;
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}
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Array::Ptr groups = GetGroups();
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if (groups && groups->GetLength() > 0) {
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ObjectLock olock(groups);
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BOOST_FOREACH(const String& name, groups) {
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HostGroup::Ptr group = HostGroup::GetByName(name);
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if (group && !group->ResolveGroupMembership(host, add, rstack + 1))
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return false;
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}
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}
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if (add)
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AddMember(host);
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else
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RemoveMember(host);
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return true;
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}
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