diff options
Diffstat (limited to 'lib/icinga/dependency-apply.cpp')
| -rw-r--r-- | lib/icinga/dependency-apply.cpp | 161 |
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(); + } +} |