mirror of
https://github.com/Icinga/icinga2.git
synced 2025-11-04 05:34:12 +01:00
150 lines
5.0 KiB
C++
150 lines
5.0 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2015 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/service.hpp"
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#include "config/configitembuilder.hpp"
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#include "config/applyrule.hpp"
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#include "base/initialize.hpp"
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#include "base/dynamictype.hpp"
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#include "base/logger.hpp"
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#include "base/context.hpp"
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#include "base/workqueue.hpp"
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#include "base/exception.hpp"
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#include <boost/foreach.hpp>
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using namespace icinga;
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INITIALIZE_ONCE(&Service::RegisterApplyRuleHandler);
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void Service::RegisterApplyRuleHandler(void)
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{
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std::vector<String> targets;
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targets.push_back("Host");
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ApplyRule::RegisterType("Service", targets);
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}
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bool Service::EvaluateApplyRuleInstance(const Host::Ptr& host, const String& name, ScriptFrame& frame, const ApplyRule& rule)
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{
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if (!rule.EvaluateFilter(frame))
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return false;
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DebugInfo di = rule.GetDebugInfo();
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Log(LogDebug, "Service")
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<< "Applying service '" << name << "' to host '" << host->GetName() << "' for rule " << di;
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ConfigItemBuilder::Ptr builder = new ConfigItemBuilder(di);
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builder->SetType("Service");
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builder->SetName(name);
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builder->SetScope(frame.Locals);
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builder->AddExpression(new SetExpression(MakeIndexer(ScopeCurrent, "host_name"), OpSetLiteral, MakeLiteral(host->GetName()), di));
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builder->AddExpression(new SetExpression(MakeIndexer(ScopeCurrent, "name"), OpSetLiteral, MakeLiteral(name), di));
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String zone = host->GetZoneName();
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if (!zone.IsEmpty())
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builder->AddExpression(new SetExpression(MakeIndexer(ScopeCurrent, "zone"), OpSetLiteral, MakeLiteral(zone), di));
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builder->AddExpression(new OwnedExpression(rule.GetExpression()));
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ConfigItem::Ptr serviceItem = builder->Compile();
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serviceItem->Commit();
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return true;
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}
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bool Service::EvaluateApplyRule(const Host::Ptr& host, const ApplyRule& 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 'apply' rule (" << di << ")";
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CONTEXT(msgbuf.str());
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ScriptFrame frame;
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if (rule.GetScope())
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rule.GetScope()->CopyTo(frame.Locals);
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frame.Locals->Set("host", host);
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Value vinstances;
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if (rule.GetFTerm()) {
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try {
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vinstances = rule.GetFTerm()->Evaluate(frame);
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} catch (const std::exception&) {
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/* Silently ignore errors here and assume there are no instances. */
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return false;
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}
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} else {
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Array::Ptr instances = new Array();
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instances->Add("");
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vinstances = instances;
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}
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bool match = false;
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if (vinstances.IsObjectType<Array>()) {
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if (!rule.GetFVVar().IsEmpty())
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BOOST_THROW_EXCEPTION(ScriptError("Array iterator requires value to be an array.", di));
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Array::Ptr arr = vinstances;
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Array::Ptr arrclone = arr->ShallowClone();
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ObjectLock olock(arrclone);
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BOOST_FOREACH(const String& instance, arrclone) {
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String name = rule.GetName();
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if (!rule.GetFKVar().IsEmpty()) {
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frame.Locals->Set(rule.GetFKVar(), instance);
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name += instance;
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}
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if (EvaluateApplyRuleInstance(host, name, frame, rule))
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match = true;
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}
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} else if (vinstances.IsObjectType<Dictionary>()) {
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if (rule.GetFVVar().IsEmpty())
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BOOST_THROW_EXCEPTION(ScriptError("Dictionary iterator requires value to be a dictionary.", di));
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Dictionary::Ptr dict = vinstances;
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BOOST_FOREACH(const String& key, dict->GetKeys()) {
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frame.Locals->Set(rule.GetFKVar(), key);
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frame.Locals->Set(rule.GetFVVar(), dict->Get(key));
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if (EvaluateApplyRuleInstance(host, rule.GetName() + key, frame, rule))
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match = true;
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}
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}
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return match;
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}
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void Service::EvaluateApplyRules(const Host::Ptr& host)
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{
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BOOST_FOREACH(ApplyRule& rule, ApplyRule::GetRules("Service")) {
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CONTEXT("Evaluating 'apply' rules for host '" + host->GetName() + "'");
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if (EvaluateApplyRule(host, rule))
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rule.AddMatch();
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}
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}
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