icinga2/lib/icinga/scheduleddowntime-apply.cpp

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/******************************************************************************
* Icinga 2 *
2016-01-12 08:29:59 +01:00
* 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/scheduleddowntime.hpp"
#include "icinga/service.hpp"
#include "config/configitembuilder.hpp"
#include "config/applyrule.hpp"
#include "base/initialize.hpp"
#include "base/configtype.hpp"
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#include "base/logger.hpp"
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#include "base/context.hpp"
#include "base/exception.hpp"
using namespace icinga;
INITIALIZE_ONCE([]() {
std::vector<String> targets;
targets.push_back("Host");
targets.push_back("Service");
ApplyRule::RegisterType("ScheduledDowntime", targets);
});
bool ScheduledDowntime::EvaluateApplyRuleInstance(const Checkable::Ptr& checkable, const String& name, ScriptFrame& frame, const ApplyRule& rule)
{
if (!rule.EvaluateFilter(frame))
return false;
DebugInfo di = rule.GetDebugInfo();
#ifdef _DEBUG
Log(LogDebug, "ScheduledDowntime")
<< "Applying scheduled downtime '" << rule.GetName() << "' to object '" << checkable->GetName() << "' for rule " << di;
#endif /* _DEBUG */
ConfigItemBuilder::Ptr builder = new ConfigItemBuilder(di);
builder->SetType("ScheduledDowntime");
builder->SetName(name);
builder->SetScope(frame.Locals->ShallowClone());
builder->SetIgnoreOnError(rule.GetIgnoreOnError());
Host::Ptr host;
Service::Ptr service;
tie(host, service) = GetHostService(checkable);
builder->AddExpression(new SetExpression(MakeIndexer(ScopeThis, "host_name"), OpSetLiteral, MakeLiteral(host->GetName()), di));
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if (service)
builder->AddExpression(new SetExpression(MakeIndexer(ScopeThis, "service_name"), OpSetLiteral, MakeLiteral(service->GetShortName()), di));
String zone = checkable->GetZoneName();
if (!zone.IsEmpty())
builder->AddExpression(new SetExpression(MakeIndexer(ScopeThis, "zone"), OpSetLiteral, MakeLiteral(zone), di));
builder->AddExpression(new SetExpression(MakeIndexer(ScopeThis, "package"), OpSetLiteral, MakeLiteral(rule.GetPackage()), di));
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builder->AddExpression(new OwnedExpression(rule.GetExpression()));
ConfigItem::Ptr downtimeItem = builder->Compile();
downtimeItem->Register();
return true;
}
bool ScheduledDowntime::EvaluateApplyRule(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);
ScriptFrame frame;
if (rule.GetScope())
rule.GetScope()->CopyTo(frame.Locals);
frame.Locals->Set("host", host);
if (service)
frame.Locals->Set("service", service);
Value vinstances;
if (rule.GetFTerm()) {
try {
vinstances = rule.GetFTerm()->Evaluate(frame);
} catch (const std::exception&) {
/* Silently ignore errors here and assume there are no instances. */
return false;
}
} else {
Array::Ptr instances = new Array();
instances->Add("");
vinstances = instances;
}
bool match = false;
if (vinstances.IsObjectType<Array>()) {
if (!rule.GetFVVar().IsEmpty())
BOOST_THROW_EXCEPTION(ScriptError("Dictionary iterator requires value to be a dictionary.", di));
Array::Ptr arr = vinstances;
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ObjectLock olock(arr);
for (const Value& instance : arr) {
String name = rule.GetName();
if (!rule.GetFKVar().IsEmpty()) {
frame.Locals->Set(rule.GetFKVar(), instance);
name += instance;
}
if (EvaluateApplyRuleInstance(checkable, name, frame, rule))
match = true;
}
} else if (vinstances.IsObjectType<Dictionary>()) {
if (rule.GetFVVar().IsEmpty())
BOOST_THROW_EXCEPTION(ScriptError("Array iterator requires value to be an array.", di));
Dictionary::Ptr dict = vinstances;
for (const String& key : dict->GetKeys()) {
frame.Locals->Set(rule.GetFKVar(), key);
frame.Locals->Set(rule.GetFVVar(), dict->Get(key));
if (EvaluateApplyRuleInstance(checkable, rule.GetName() + key, frame, rule))
match = true;
}
}
return match;
}
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void ScheduledDowntime::EvaluateApplyRules(const Host::Ptr& host)
{
CONTEXT("Evaluating 'apply' rules for host '" + host->GetName() + "'");
for (ApplyRule& rule : ApplyRule::GetRules("ScheduledDowntime")) {
if (rule.GetTargetType() != "Host")
continue;
if (EvaluateApplyRule(host, rule))
rule.AddMatch();
}
}
void ScheduledDowntime::EvaluateApplyRules(const Service::Ptr& service)
{
CONTEXT("Evaluating 'apply' rules for service '" + service->GetName() + "'");
for (ApplyRule& rule : ApplyRule::GetRules("ScheduledDowntime")) {
if (rule.GetTargetType() != "Service")
continue;
if (EvaluateApplyRule(service, rule))
rule.AddMatch();
}
}