icinga2/lib/icinga/scheduleddowntime-apply.cpp

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/******************************************************************************
* Icinga 2 *
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* Copyright (C) 2012-2014 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. *
******************************************************************************/
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#include "icinga/scheduleddowntime.hpp"
#include "icinga/service.hpp"
#include "config/configitembuilder.hpp"
#include "config/applyrule.hpp"
#include "config/configcompilercontext.hpp"
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#include "base/initialize.hpp"
#include "base/dynamictype.hpp"
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#include "base/logger.hpp"
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#include "base/context.hpp"
#include "base/configerror.hpp"
#include <boost/foreach.hpp>
using namespace icinga;
INITIALIZE_ONCE(&ScheduledDowntime::RegisterApplyRuleHandler);
void ScheduledDowntime::RegisterApplyRuleHandler(void)
{
std::vector<String> targets;
targets.push_back("Host");
targets.push_back("Service");
ApplyRule::RegisterType("ScheduledDowntime", targets, &ScheduledDowntime::EvaluateApplyRules);
}
void ScheduledDowntime::EvaluateApplyRuleOneInstance(const Checkable::Ptr& checkable, const String& name, const Dictionary::Ptr& locals, const ApplyRule& rule)
{
DebugInfo di = rule.GetDebugInfo();
Log(LogDebug, "ScheduledDowntime")
<< "Applying scheduled downtime '" << rule.GetName() << "' to object '" << checkable->GetName() << "' for rule " << di;
ConfigItemBuilder::Ptr builder = new ConfigItemBuilder(di);
builder->SetType("ScheduledDowntime");
builder->SetName(name);
builder->SetScope(locals);
Host::Ptr host;
Service::Ptr service;
tie(host, service) = GetHostService(checkable);
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builder->AddExpression(new SetExpression(MakeIndexer("host_name"), OpSetLiteral, MakeLiteral(host->GetName()), di));
if (service)
builder->AddExpression(new SetExpression(MakeIndexer("service_name"), OpSetLiteral, MakeLiteral(service->GetShortName()), di));
String zone = checkable->GetZone();
if (!zone.IsEmpty()) {
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builder->AddExpression(new SetExpression(MakeIndexer("zone"), OpSetLiteral, MakeLiteral(zone), di));
}
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builder->AddExpression(new OwnedExpression(rule.GetExpression()));
ConfigItem::Ptr downtimeItem = builder->Compile();
DynamicObject::Ptr dobj = downtimeItem->Commit();
dobj->OnConfigLoaded();
}
bool ScheduledDowntime::EvaluateApplyRuleOne(const Checkable::Ptr& checkable, const ApplyRule& rule)
{
DebugInfo di = rule.GetDebugInfo();
std::ostringstream msgbuf;
msgbuf << "Evaluating 'apply' rule (" << di << ")";
CONTEXT(msgbuf.str());
Host::Ptr host;
Service::Ptr service;
tie(host, service) = GetHostService(checkable);
Dictionary::Ptr locals = new Dictionary();
locals->Set("__parent", rule.GetScope());
locals->Set("host", host);
if (service)
locals->Set("service", service);
if (!rule.EvaluateFilter(locals))
return false;
Value vinstances;
if (rule.GetFTerm()) {
vinstances = rule.GetFTerm()->Evaluate(locals);
} else {
Array::Ptr instances = new Array();
instances->Add("");
vinstances = instances;
}
if (vinstances.IsObjectType<Array>()) {
if (!rule.GetFVVar().IsEmpty())
BOOST_THROW_EXCEPTION(ConfigError("Array iterator requires value to be an array.") << errinfo_debuginfo(di));
Array::Ptr arr = vinstances;
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ObjectLock olock(arr);
BOOST_FOREACH(const String& instance, arr) {
String name = rule.GetName();
if (!rule.GetFKVar().IsEmpty()) {
locals->Set(rule.GetFKVar(), instance);
name += instance;
}
EvaluateApplyRuleOneInstance(checkable, name, locals, rule);
}
} else if (vinstances.IsObjectType<Dictionary>()) {
if (rule.GetFVVar().IsEmpty())
BOOST_THROW_EXCEPTION(ConfigError("Dictionary iterator requires value to be a dictionary.") << errinfo_debuginfo(di));
Dictionary::Ptr dict = vinstances;
ObjectLock olock(dict);
BOOST_FOREACH(const Dictionary::Pair& kv, dict) {
locals->Set(rule.GetFKVar(), kv.first);
locals->Set(rule.GetFVVar(), kv.second);
EvaluateApplyRuleOneInstance(checkable, rule.GetName() + kv.first, locals, rule);
}
}
return true;
}
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void ScheduledDowntime::EvaluateApplyRule(const ApplyRule& rule)
{
int apply_count = 0;
if (rule.GetTargetType() == "Host") {
apply_count = 0;
BOOST_FOREACH(const Host::Ptr& host, DynamicType::GetObjectsByType<Host>()) {
CONTEXT("Evaluating 'apply' rules for host '" + host->GetName() + "'");
try {
if (EvaluateApplyRuleOne(host, rule))
apply_count++;
} catch (const ConfigError& ex) {
const DebugInfo *di = boost::get_error_info<errinfo_debuginfo>(ex);
ConfigCompilerContext::GetInstance()->AddMessage(true, ex.what(), di ? *di : DebugInfo());
}
}
if (apply_count == 0)
Log(LogWarning, "ScheduledDowntime")
<< "Apply rule '" << rule.GetName() << "' for host does not match anywhere!";
} else if (rule.GetTargetType() == "Service") {
apply_count = 0;
BOOST_FOREACH(const Service::Ptr& service, DynamicType::GetObjectsByType<Service>()) {
CONTEXT("Evaluating 'apply' rules for Service '" + service->GetName() + "'");
try {
if(EvaluateApplyRuleOne(service, rule))
apply_count++;
} catch (const ConfigError& ex) {
const DebugInfo *di = boost::get_error_info<errinfo_debuginfo>(ex);
ConfigCompilerContext::GetInstance()->AddMessage(true, ex.what(), di ? *di : DebugInfo());
}
}
if (apply_count == 0)
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Log(LogWarning, "ScheduledDowntime")
<< "Apply rule '" << rule.GetName() << "' for service does not match anywhere!";
} else {
Log(LogWarning, "ScheduledDowntime")
<< "Wrong target type for apply rule '" << rule.GetName() << "'!";
}
}
void ScheduledDowntime::EvaluateApplyRules(const std::vector<ApplyRule>& rules)
{
ParallelWorkQueue upq;
BOOST_FOREACH(const ApplyRule& rule, rules) {
upq.Enqueue(boost::bind(&ScheduledDowntime::EvaluateApplyRule, boost::cref(rule)));
}
upq.Join();
}