mirror of
https://github.com/Icinga/icinga2.git
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145 lines
4.1 KiB
C++
145 lines
4.1 KiB
C++
/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
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#include "icinga/service.hpp"
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#include "config/configitembuilder.hpp"
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#include "config/applyrule.hpp"
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#include "base/initialize.hpp"
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#include "base/configtype.hpp"
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#include "base/logger.hpp"
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#include "base/context.hpp"
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#include "base/workqueue.hpp"
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#include "base/exception.hpp"
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using namespace icinga;
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INITIALIZE_ONCE([]() {
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ApplyRule::RegisterType("Service", { "Host" });
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});
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bool Service::EvaluateApplyRuleInstance(const Host::Ptr& host, const String& name, ScriptFrame& frame, const ApplyRule& rule, bool skipFilter)
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{
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if (!skipFilter && !rule.EvaluateFilter(frame))
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return false;
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auto& di (rule.GetDebugInfo());
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#ifdef _DEBUG
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Log(LogDebug, "Service")
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<< "Applying service '" << name << "' to host '" << host->GetName() << "' for rule " << di;
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#endif /* _DEBUG */
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ConfigItemBuilder builder{di};
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builder.SetType(Service::TypeInstance);
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builder.SetName(name);
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builder.SetScope(frame.Locals->ShallowClone());
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builder.SetIgnoreOnError(rule.GetIgnoreOnError());
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builder.AddExpression(new ImportDefaultTemplatesExpression());
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builder.AddExpression(new SetExpression(MakeIndexer(ScopeThis, "host_name"), OpSetLiteral, MakeLiteral(host->GetName()), di));
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builder.AddExpression(new SetExpression(MakeIndexer(ScopeThis, "name"), OpSetLiteral, MakeLiteral(name), di));
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String zone = host->GetZoneName();
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if (!zone.IsEmpty())
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builder.AddExpression(new SetExpression(MakeIndexer(ScopeThis, "zone"), OpSetLiteral, MakeLiteral(zone), di));
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builder.AddExpression(new SetExpression(MakeIndexer(ScopeThis, "package"), OpSetLiteral, MakeLiteral(rule.GetPackage()), di));
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builder.AddExpression(new OwnedExpression(rule.GetExpression()));
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ConfigItem::Ptr serviceItem = builder.Compile();
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serviceItem->Register();
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return true;
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}
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bool Service::EvaluateApplyRule(const Host::Ptr& host, const ApplyRule& rule, bool skipFilter)
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{
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auto& di (rule.GetDebugInfo());
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CONTEXT("Evaluating 'apply' rule (" << di << ")");
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ScriptFrame frame (false);
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if (rule.GetScope() || rule.GetFTerm()) {
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frame.Locals = new Dictionary();
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if (rule.GetScope()) {
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rule.GetScope()->CopyTo(frame.Locals);
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}
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host->GetFrozenLocalsForApply()->CopyTo(frame.Locals);
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frame.Locals->Freeze();
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} else {
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frame.Locals = host->GetFrozenLocalsForApply();
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}
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bool match = false;
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if (rule.GetFTerm()) {
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Value vinstances;
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try {
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vinstances = rule.GetFTerm()->Evaluate(frame);
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} catch (const std::exception&) {
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/* Silently ignore errors here and assume there are no instances. */
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return false;
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}
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if (vinstances.IsObjectType<Array>()) {
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if (!rule.GetFVVar().IsEmpty())
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BOOST_THROW_EXCEPTION(ScriptError("Dictionary iterator requires value to be a dictionary.", di));
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Array::Ptr arr = vinstances;
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ObjectLock olock(arr);
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for (const Value& instance : arr) {
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String name = rule.GetName();
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if (!rule.GetFKVar().IsEmpty()) {
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frame.Locals->Set(rule.GetFKVar(), instance, true);
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name += instance;
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}
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if (EvaluateApplyRuleInstance(host, name, frame, rule, skipFilter))
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match = true;
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}
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} else if (vinstances.IsObjectType<Dictionary>()) {
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if (rule.GetFVVar().IsEmpty())
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BOOST_THROW_EXCEPTION(ScriptError("Array iterator requires value to be an array.", di));
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Dictionary::Ptr dict = vinstances;
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ObjectLock olock (dict);
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for (auto& kv : dict) {
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frame.Locals->Set(rule.GetFKVar(), kv.first, true);
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frame.Locals->Set(rule.GetFVVar(), kv.second, true);
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if (EvaluateApplyRuleInstance(host, rule.GetName() + kv.first, frame, rule, skipFilter))
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match = true;
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}
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}
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} else if (EvaluateApplyRuleInstance(host, rule.GetName(), frame, rule, skipFilter)) {
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match = true;
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}
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return match;
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}
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void Service::EvaluateApplyRules(const Host::Ptr& host)
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{
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CONTEXT("Evaluating 'apply' rules for host '" << host->GetName() << "'");
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for (auto& rule : ApplyRule::GetRules(Service::TypeInstance, Host::TypeInstance)) {
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if (EvaluateApplyRule(host, *rule))
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rule->AddMatch();
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}
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for (auto& rule : ApplyRule::GetTargetedHostRules(Service::TypeInstance, host->GetName())) {
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if (EvaluateApplyRule(host, *rule, true))
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rule->AddMatch();
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}
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}
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