1 files changed, 135 insertions, 0 deletions
diff --git a/lib/icinga/service-apply.cpp b/lib/icinga/service-apply.cpp
new file mode 100644
index 0000000..666847c
--- /dev/null
+++ b/lib/icinga/service-apply.cpp
@@ -0,0 +1,135 @@
+/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
+
+#include "icinga/service.hpp"
+#include "config/configitembuilder.hpp"
+#include "config/applyrule.hpp"
+#include "base/initialize.hpp"
+#include "base/configtype.hpp"
+#include "base/logger.hpp"
+#include "base/context.hpp"
+#include "base/workqueue.hpp"
+#include "base/exception.hpp"
+
+using namespace icinga;
+
+INITIALIZE_ONCE([]() {
+	ApplyRule::RegisterType("Service", { "Host" });
+});
+
+bool Service::EvaluateApplyRuleInstance(const Host::Ptr& host, const String& name, ScriptFrame& frame, const ApplyRule& rule, bool skipFilter)
+{
+	if (!skipFilter && !rule.EvaluateFilter(frame))
+		return false;
+
+	DebugInfo di = rule.GetDebugInfo();
+
+#ifdef _DEBUG
+	Log(LogDebug, "Service")
+		<< "Applying service '" << name << "' to host '" << host->GetName() << "' for rule " << di;
+#endif /* _DEBUG */
+
+	ConfigItemBuilder builder{di};
+	builder.SetType(Service::TypeInstance);
+	builder.SetName(name);
+	builder.SetScope(frame.Locals->ShallowClone());
+	builder.SetIgnoreOnError(rule.GetIgnoreOnError());
+
+	builder.AddExpression(new ImportDefaultTemplatesExpression());
+
+	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 Service::EvaluateApplyRule(const Host::Ptr& host, const ApplyRule& rule, bool skipFilter)
+{
+	DebugInfo di = rule.GetDebugInfo();
+
+	std::ostringstream msgbuf;
+	msgbuf << "Evaluating 'apply' rule (" << di << ")";
+	CONTEXT(msgbuf.str());
+
+	ScriptFrame frame(true);
+	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 {
+		vinstances = new Array({ "" });
+	}
+
+	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, skipFilter))
+				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, skipFilter))
+				match = true;
+		}
+	}
+
+	return match;
+}
+
+void Service::EvaluateApplyRules(const Host::Ptr& host)
+{
+	CONTEXT("Evaluating 'apply' rules for host '" + host->GetName() + "'");
+
+	for (auto& rule : ApplyRule::GetRules(Service::TypeInstance, Host::TypeInstance)) {
+		if (EvaluateApplyRule(host, *rule))
+			rule->AddMatch();
+	}
+
+	for (auto& rule : ApplyRule::GetTargetedHostRules(Service::TypeInstance, host->GetName())) {
+		if (EvaluateApplyRule(host, *rule, true))
+			rule->AddMatch();
+	}
+}