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834709543a
This prevents the `m_HasMatches` property from being altered simultaneously. This might seem harmless (since this property can only be set to true by any calling thread), however, from a technical (C++) point of view, this constitutes a data race.
126 lines
4.2 KiB
C++
126 lines
4.2 KiB
C++
/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
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#ifndef APPLYRULE_H
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#define APPLYRULE_H
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#include "config/i2-config.hpp"
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#include "config/expression.hpp"
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#include "base/debuginfo.hpp"
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#include "base/shared-object.hpp"
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#include "base/type.hpp"
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#include <unordered_map>
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#include <atomic>
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namespace icinga
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{
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/**
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* @ingroup config
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*/
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class ApplyRule : public SharedObject
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{
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public:
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DECLARE_PTR_TYPEDEFS(ApplyRule);
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struct PerHost
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{
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std::set<ApplyRule::Ptr> ForHost;
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std::unordered_map<String /* service */, std::set<ApplyRule::Ptr>> ForServices;
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};
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struct PerSourceType
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{
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std::unordered_map<Type* /* target type */, std::vector<ApplyRule::Ptr>> Regular;
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std::unordered_map<String /* host */, PerHost> Targeted;
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};
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/*
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* m_Rules[T::TypeInstance.get()].Targeted["H"].ForHost
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* contains all apply rules like apply T "x" to Host { ... }
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* which target only specific hosts incl. "H", e.g. via
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* assign where host.name == "H" || host.name == "h".
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*
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* m_Rules[T::TypeInstance.get()].Targeted["H"].ForServices["S"]
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* contains all apply rules like apply T "x" to Service { ... }
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* which target only specific services on specific hosts,
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* e.g. via assign where host.name == "H" && service.name == "S".
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*
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* m_Rules[T::TypeInstance.get()].Regular[C::TypeInstance.get()]
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* contains all other apply rules like apply T "x" to C { ... }.
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*/
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typedef std::unordered_map<Type* /* source type */, PerSourceType> RuleMap;
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typedef std::map<String, std::vector<String> > TypeMap;
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String GetName() const;
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Expression::Ptr GetExpression() const;
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Expression::Ptr GetFilter() const;
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String GetPackage() const;
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inline const String& GetFKVar() const noexcept
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{
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return m_FKVar;
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}
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inline const String& GetFVVar() const noexcept
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{
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return m_FVVar;
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}
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Expression::Ptr GetFTerm() const;
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bool GetIgnoreOnError() const;
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const DebugInfo& GetDebugInfo() const;
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Dictionary::Ptr GetScope() const;
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void AddMatch();
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bool HasMatches() const;
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bool EvaluateFilter(ScriptFrame& frame) const;
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static void AddRule(const String& sourceType, const String& targetType, const String& name, const Expression::Ptr& expression,
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const Expression::Ptr& filter, const String& package, const String& fkvar, const String& fvvar, const Expression::Ptr& fterm,
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bool ignoreOnError, const DebugInfo& di, const Dictionary::Ptr& scope);
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static const std::vector<ApplyRule::Ptr>& GetRules(const Type::Ptr& sourceType, const Type::Ptr& targetType);
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static const std::set<ApplyRule::Ptr>& GetTargetedHostRules(const Type::Ptr& sourceType, const String& host);
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static const std::set<ApplyRule::Ptr>& GetTargetedServiceRules(const Type::Ptr& sourceType, const String& host, const String& service);
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static void RegisterType(const String& sourceType, const std::vector<String>& targetTypes);
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static bool IsValidSourceType(const String& sourceType);
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static bool IsValidTargetType(const String& sourceType, const String& targetType);
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static const std::vector<String>& GetTargetTypes(const String& sourceType);
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static void CheckMatches(bool silent);
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static void CheckMatches(const ApplyRule::Ptr& rule, Type* sourceType, bool silent);
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private:
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String m_Name;
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Expression::Ptr m_Expression;
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Expression::Ptr m_Filter;
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String m_Package;
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String m_FKVar;
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String m_FVVar;
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Expression::Ptr m_FTerm;
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bool m_IgnoreOnError;
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DebugInfo m_DebugInfo;
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Dictionary::Ptr m_Scope;
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std::atomic<bool> m_HasMatches;
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static TypeMap m_Types;
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static RuleMap m_Rules;
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static bool AddTargetedRule(const ApplyRule::Ptr& rule, const String& targetType, PerSourceType& rules);
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static bool GetTargetHosts(Expression* assignFilter, std::vector<const String *>& hosts);
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static bool GetTargetServices(Expression* assignFilter, std::vector<std::pair<const String *, const String *>>& services);
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static std::pair<const String *, const String *> GetTargetService(Expression* assignFilter);
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static const String * GetComparedName(Expression* assignFilter, const char * lcType);
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static bool IsNameIndexer(Expression* exp, const char * lcType);
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static const String * GetLiteralStringValue(Expression* exp);
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ApplyRule(String name, Expression::Ptr expression,
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Expression::Ptr filter, String package, String fkvar, String fvvar, Expression::Ptr fterm,
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bool ignoreOnError, DebugInfo di, Dictionary::Ptr scope);
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};
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}
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#endif /* APPLYRULE_H */
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