icinga2/lib/base/dynamictype.h

137 lines
4.1 KiB
C++

/******************************************************************************
* Icinga 2 *
* Copyright (C) 2012-2013 Icinga Development Team (http://www.icinga.org/) *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of the GNU General Public License *
* as published by the Free Software Foundation; either version 2 *
* of the License, or (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the Free Software Foundation *
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
******************************************************************************/
#ifndef DYNAMICTYPE_H
#define DYNAMICTYPE_H
#include "base/i2-base.h"
#include "base/registry.h"
#include "base/dynamicobject.h"
#include "base/debug.h"
#include <map>
#include <set>
#include <boost/function.hpp>
#include <boost/smart_ptr/make_shared.hpp>
namespace icinga
{
class I2_BASE_API DynamicType : public Object
{
public:
DECLARE_PTR_TYPEDEFS(DynamicType);
typedef boost::function<DynamicObject::Ptr (void)> ObjectFactory;
DynamicType(const String& name, const ObjectFactory& factory);
String GetName(void) const;
static DynamicType::Ptr GetByName(const String& name);
static void RegisterType(const DynamicType::Ptr& type);
DynamicObject::Ptr CreateObject(const Dictionary::Ptr& serializedUpdate);
DynamicObject::Ptr GetObject(const String& name) const;
void RegisterObject(const DynamicObject::Ptr& object);
static std::vector<DynamicType::Ptr> GetTypes(void);
std::vector<DynamicObject::Ptr> GetObjects(void) const;
template<typename T>
static std::vector<shared_ptr<T> > GetObjects(void)
{
std::vector<shared_ptr<T> > objects;
BOOST_FOREACH(const DynamicObject::Ptr& object, GetObjects(T::GetTypeName())) {
shared_ptr<T> tobject = dynamic_pointer_cast<T>(object);
ASSERT(tobject);
objects.push_back(tobject);
}
return objects;
}
private:
String m_Name;
ObjectFactory m_ObjectFactory;
typedef std::map<String, DynamicObject::Ptr, string_iless> ObjectMap;
typedef std::vector<DynamicObject::Ptr> ObjectVector;
ObjectMap m_ObjectMap;
ObjectVector m_ObjectVector;
typedef std::map<String, DynamicType::Ptr, string_iless> TypeMap;
typedef std::vector<DynamicType::Ptr> TypeVector;
static TypeMap& InternalGetTypeMap(void);
static TypeVector& InternalGetTypeVector(void);
static boost::mutex& GetStaticMutex(void);
static std::vector<DynamicObject::Ptr> GetObjects(const String& type);
};
/**
* A registry for DynamicType objects.
*
* @ingroup base
*/
class DynamicTypeRegistry : public Registry<DynamicType::Ptr>
{ };
/**
* Helper class for registering DynamicObject implementation classes.
*
* @ingroup base
*/
class RegisterTypeHelper
{
public:
RegisterTypeHelper(const String& name, const DynamicType::ObjectFactory& factory)
{
DynamicType::Ptr type = boost::make_shared<DynamicType>(name, factory);
DynamicType::RegisterType(type);
}
};
/**
* Factory function for DynamicObject-based classes.
*
* @ingroup base
*/
template<typename T>
shared_ptr<T> DynamicObjectFactory(void)
{
return boost::make_shared<T>();
}
#define REGISTER_TYPE_ALIAS(type, alias) \
I2_EXPORT icinga::RegisterTypeHelper g_RegisterDT_ ## type(alias, DynamicObjectFactory<type>);
#define REGISTER_TYPE(type) \
REGISTER_TYPE_ALIAS(type, #type)
}
#endif /* DYNAMICTYPE_H */