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/* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
#ifndef TYPE_H
#define TYPE_H
#include "base/i2-base.hpp"
#include "base/string.hpp"
#include "base/object.hpp"
#include "base/initialize.hpp"
#include <unordered_set>
#include <vector>
namespace icinga
{
/* keep this in sync with tools/mkclass/classcompiler.hpp */
enum FieldAttribute
{
FAEphemeral = 1,
FAConfig = 2,
FAState = 4,
FARequired = 256,
FANavigation = 512,
FANoUserModify = 1024,
FANoUserView = 2048,
FADeprecated = 4096,
};
class Type;
struct Field
{
int ID;
const char *TypeName;
const char *Name;
const char *NavigationName;
const char *RefTypeName;
int Attributes;
int ArrayRank;
Field(int id, const char *type, const char *name, const char *navigationName, const char *reftype, int attributes, int arrayRank)
: ID(id), TypeName(type), Name(name), NavigationName(navigationName), RefTypeName(reftype), Attributes(attributes), ArrayRank(arrayRank)
{ }
};
enum TypeAttribute
{
TAAbstract = 1
};
class ValidationUtils
{
public:
virtual bool ValidateName(const String& type, const String& name) const = 0;
};
class Type : public Object
{
public:
DECLARE_OBJECT(Type);
String ToString() const override;
virtual String GetName() const = 0;
virtual Type::Ptr GetBaseType() const = 0;
virtual int GetAttributes() const = 0;
virtual int GetFieldId(const String& name) const = 0;
virtual Field GetFieldInfo(int id) const = 0;
virtual int GetFieldCount() const = 0;
String GetPluralName() const;
Object::Ptr Instantiate(const std::vector<Value>& args) const;
bool IsAssignableFrom(const Type::Ptr& other) const;
bool IsAbstract() const;
Object::Ptr GetPrototype() const;
void SetPrototype(const Object::Ptr& object);
static void Register(const Type::Ptr& type);
static Type::Ptr GetByName(const String& name);
static std::vector<Type::Ptr> GetAllTypes();
/**
* Returns a list of config types sorted by their "load_after" dependencies.
*
* All dependencies of a given type are listed at a lower index than that of the type itself. In other words,
* if a `Service` type load depends on the `Host` and `ApiListener` types, the Host and ApiListener types are
* guaranteed to appear first on the list. Nevertheless, the order of the Host and ApiListener types themselves
* is arbitrary if the two types are not dependent.
*
* It should be noted that this method will fail fatally when used prior to the completion
* of namespace initialization.
*
* @return std::vector<Type::Ptr>
*/
static const std::vector<Ptr>& GetConfigTypesSortedByLoadDependencies();
void SetField(int id, const Value& value, bool suppress_events = false, const Value& cookie = Empty) override;
Value GetField(int id) const override;
virtual const std::unordered_set<Type*>& GetLoadDependencies() const;
virtual int GetActivationPriority() const;
typedef std::function<void (const Object::Ptr&, const Value&)> AttributeHandler;
virtual void RegisterAttributeHandler(int fieldId, const AttributeHandler& callback);
protected:
virtual ObjectFactory GetFactory() const = 0;
private:
Object::Ptr m_Prototype;
};
class TypeType final : public Type
{
public:
DECLARE_PTR_TYPEDEFS(Type);
String GetName() const override;
Type::Ptr GetBaseType() const override;
int GetAttributes() const override;
int GetFieldId(const String& name) const override;
Field GetFieldInfo(int id) const override;
int GetFieldCount() const override;
static Object::Ptr GetPrototype();
protected:
ObjectFactory GetFactory() const override;
};
template<typename T>
class TypeImpl
{
};
/* Ensure that the priority is lower than the basic namespace initialization in scriptframe.cpp. */
#define REGISTER_TYPE(type) \
INITIALIZE_ONCE_WITH_PRIORITY([]() { \
icinga::Type::Ptr t = new TypeImpl<type>(); \
type::TypeInstance = t; \
icinga::Type::Register(t); \
}, InitializePriority::RegisterTypes); \
DEFINE_TYPE_INSTANCE(type)
#define REGISTER_TYPE_WITH_PROTOTYPE(type, prototype) \
INITIALIZE_ONCE_WITH_PRIORITY([]() { \
icinga::Type::Ptr t = new TypeImpl<type>(); \
t->SetPrototype(prototype); \
type::TypeInstance = t; \
icinga::Type::Register(t); \
}, InitializePriority::RegisterTypes); \
DEFINE_TYPE_INSTANCE(type)
#define DEFINE_TYPE_INSTANCE(type) \
Type::Ptr type::TypeInstance
}
#endif /* TYPE_H */
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