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-rw-r--r--lib/icinga/dependency-apply.cpp161
1 files changed, 161 insertions, 0 deletions
diff --git a/lib/icinga/dependency-apply.cpp b/lib/icinga/dependency-apply.cpp
new file mode 100644
index 0000000..8681c43
--- /dev/null
+++ b/lib/icinga/dependency-apply.cpp
@@ -0,0 +1,161 @@
+/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
+
+#include "icinga/dependency.hpp"
+#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("Dependency", { "Host", "Service" });
+});
+
+bool Dependency::EvaluateApplyRuleInstance(const Checkable::Ptr& checkable, const String& name, ScriptFrame& frame, const ApplyRule& rule, bool skipFilter)
+{
+ if (!skipFilter && !rule.EvaluateFilter(frame))
+ return false;
+
+ auto& 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());
+
+ builder.AddExpression(new ImportDefaultTemplatesExpression());
+
+ 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 OwnedExpression(rule.GetExpression()));
+
+ ConfigItem::Ptr dependencyItem = builder.Compile();
+ dependencyItem->Register();
+
+ return true;
+}
+
+bool Dependency::EvaluateApplyRule(const Checkable::Ptr& checkable, const ApplyRule& rule, bool skipFilter)
+{
+ auto& di (rule.GetDebugInfo());
+
+ CONTEXT("Evaluating 'apply' rule (" << di << ")");
+
+ Host::Ptr host;
+ Service::Ptr service;
+ tie(host, service) = GetHostService(checkable);
+
+ ScriptFrame frame(true);
+ 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 {
+ 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(checkable, 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(checkable, rule.GetName() + key, frame, rule, skipFilter))
+ match = true;
+ }
+ }
+
+ return match;
+}
+
+void Dependency::EvaluateApplyRules(const Host::Ptr& host)
+{
+ CONTEXT("Evaluating 'apply' rules for host '" << host->GetName() << "'");
+
+ for (auto& rule : ApplyRule::GetRules(Dependency::TypeInstance, Host::TypeInstance)) {
+ if (EvaluateApplyRule(host, *rule))
+ rule->AddMatch();
+ }
+
+ for (auto& rule : ApplyRule::GetTargetedHostRules(Dependency::TypeInstance, host->GetName())) {
+ if (EvaluateApplyRule(host, *rule, true))
+ rule->AddMatch();
+ }
+}
+
+void Dependency::EvaluateApplyRules(const Service::Ptr& service)
+{
+ CONTEXT("Evaluating 'apply' rules for service '" << service->GetName() << "'");
+
+ for (auto& rule : ApplyRule::GetRules(Dependency::TypeInstance, Service::TypeInstance)) {
+ if (EvaluateApplyRule(service, *rule))
+ rule->AddMatch();
+ }
+
+ for (auto& rule : ApplyRule::GetTargetedServiceRules(Dependency::TypeInstance, service->GetHost()->GetName(), service->GetShortName())) {
+ if (EvaluateApplyRule(service, *rule, true))
+ rule->AddMatch();
+ }
+}