C++ ApplyRule类代码示例

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);

	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()) {
		builder->AddExpression(new SetExpression(MakeIndexer("zone"), OpSetLiteral, MakeLiteral(zone), di));
	}

	builder->AddExpression(new OwnedExpression(rule.GetExpression()));

	ConfigItem::Ptr downtimeItem = builder->Compile();
	DynamicObject::Ptr dobj = downtimeItem->Commit();
	dobj->OnConfigLoaded();
}

bool Service::EvaluateApplyRuleInstance(const Host::Ptr& host, const String& name, ScriptFrame& frame, const ApplyRule& rule)
{
	if (!rule.EvaluateFilter(frame))
		return false;

	DebugInfo di = rule.GetDebugInfo();

	Log(LogDebug, "Service")
	    << "Applying service '" << name << "' to host '" << host->GetName() << "' for rule " << di;

	ConfigItemBuilder::Ptr builder = new ConfigItemBuilder(di);
	builder->SetType("Service");
	builder->SetName(name);
	builder->SetScope(frame.Locals->ShallowClone());
	builder->SetIgnoreOnError(rule.GetIgnoreOnError());

	builder->AddExpression(new SetExpression(MakeIndexer(ScopeThis, "host_name"), OpSetLiteral, MakeLiteral(host->GetName()), di));

	builder->AddExpression(new SetExpression(MakeIndexer(ScopeThis, "name"), OpSetLiteral, MakeLiteral(name), di));

	String zone = host->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));

	builder->AddExpression(new OwnedExpression(rule.GetExpression()));

	ConfigItem::Ptr serviceItem = builder->Compile();
	serviceItem->Register();

	return true;
}

bool Dependency::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("Array iterator requires value to be an array.", di));

		Array::Ptr arr = vinstances;
		Array::Ptr arrclone = arr->ShallowClone();

		ObjectLock olock(arrclone);
		BOOST_FOREACH(const Value& instance, arrclone) {
			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>()) {

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);

	VMFrame frame;
	if (rule.GetScope())
		rule.GetScope()->CopyTo(frame.Locals);
	frame.Locals->Set("host", host);
	if (service)
		frame.Locals->Set("service", service);

	if (!rule.EvaluateFilter(frame))
		return false;

	Value vinstances;

	if (rule.GetFTerm()) {
		vinstances = rule.GetFTerm()->Evaluate(frame);
	} 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;

		ObjectLock olock(arr);
		BOOST_FOREACH(const String& instance, arr) {
			String name = rule.GetName();

			if (!rule.GetFKVar().IsEmpty()) {
				frame.Locals->Set(rule.GetFKVar(), instance);
				name += instance;
			}

			EvaluateApplyRuleInstance(checkable, name, frame, rule);
		}
	} else if (vinstances.IsObjectType<Dictionary>()) {

bool Dependency::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, "Dependency")
		<< "Applying dependency '" << name << "' to object '" << checkable->GetName() << "' for rule " << di;
#endif /* _DEBUG */

	ConfigItemBuilder builder{di};
	builder.SetType(Dependency::TypeInstance);
	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, "parent_host_name"), OpSetLiteral, MakeLiteral(host->GetName()), di));
	builder.AddExpression(new SetExpression(MakeIndexer(ScopeThis, "child_host_name"), OpSetLiteral, MakeLiteral(host->GetName()), di));

	if (service)
		builder.AddExpression(new SetExpression(MakeIndexer(ScopeThis, "child_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));

	builder.AddExpression(new ImportDefaultTemplatesExpression());

	builder.AddExpression(new OwnedExpression(rule.GetExpression()));

	ConfigItem::Ptr dependencyItem = builder.Compile();
	dependencyItem->Register();

	return true;
}

bool Dependency::EvaluateApplyRuleInstance(const Checkable::Ptr& checkable, const String& name, ScriptFrame& frame, const ApplyRule& rule)
{
	if (!rule.EvaluateFilter(frame))
		return false;

	DebugInfo di = rule.GetDebugInfo();

	Log(LogDebug, "Dependency")
		<< "Applying dependency '" << name << "' to object '" << checkable->GetName() << "' for rule " << di;

	ConfigItemBuilder::Ptr builder = new ConfigItemBuilder(di);
	builder->SetType("Dependency");
	builder->SetName(name);
	builder->SetScope(frame.Locals->ShallowClone());

	Host::Ptr host;
	Service::Ptr service;
	tie(host, service) = GetHostService(checkable);

	builder->AddExpression(new SetExpression(MakeIndexer(ScopeThis, "parent_host_name"), OpSetLiteral, MakeLiteral(host->GetName()), di));
	builder->AddExpression(new SetExpression(MakeIndexer(ScopeThis, "child_host_name"), OpSetLiteral, MakeLiteral(host->GetName()), di));

	if (service)
		builder->AddExpression(new SetExpression(MakeIndexer(ScopeThis, "child_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, "module"), OpSetLiteral, MakeLiteral(rule.GetModule()), di));
	
	builder->AddExpression(new OwnedExpression(rule.GetExpression()));

	ConfigItem::Ptr dependencyItem = builder->Compile();
	dependencyItem->Register();

	return true;
}

bool Notification::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);

	Dictionary::Ptr locals = make_shared<Dictionary>();
	locals->Set("host", host);
	if (service)
		locals->Set("service", service);

	if (!rule.EvaluateFilter(locals))
		return false;

	std::ostringstream msgbuf2;
	msgbuf2 << "Applying notification '" << rule.GetName() << "' to object '" << checkable->GetName() << "' for rule " << di;
	Log(LogDebug, "icinga", msgbuf2.str());

	ConfigItemBuilder::Ptr builder = make_shared<ConfigItemBuilder>(di);
	builder->SetType("Notification");
	builder->SetName(rule.GetName());
	builder->SetScope(rule.GetScope());

	builder->AddExpression(make_shared<AExpression>(&AExpression::OpSet,
	    make_shared<AExpression>(&AExpression::OpLiteral, "host_name", di),
	    make_shared<AExpression>(&AExpression::OpLiteral, host->GetName(), di),
	    di));

	if (service) {
		builder->AddExpression(make_shared<AExpression>(&AExpression::OpSet,
		    make_shared<AExpression>(&AExpression::OpLiteral, "service_name", di),
		    make_shared<AExpression>(&AExpression::OpLiteral, service->GetShortName(), di),
		    di));
	}

	builder->AddExpression(rule.GetExpression());

	ConfigItem::Ptr notificationItem = builder->Compile();
	notificationItem->Register();
	DynamicObject::Ptr dobj = notificationItem->Commit();
	dobj->OnConfigLoaded();

	return true;
}

bool Service::EvaluateApplyRule(const Host::Ptr& host, const ApplyRule& rule)
{
	DebugInfo di = rule.GetDebugInfo();

	std::ostringstream msgbuf;
	msgbuf << "Evaluating 'apply' rule (" << di << ")";
	CONTEXT(msgbuf.str());

	ScriptFrame frame;
	if (rule.GetScope())
		rule.GetScope()->CopyTo(frame.Locals);
	frame.Locals->Set("host", host);

	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;

		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(host, 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(host, rule.GetName() + key, frame, rule))
				match = true;
		}
	}

	return match;
}