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/*
* Anope IRC Services
*
* Copyright (C) 2016 Adam <Adam@anope.org>
* Copyright (C) 2012-2016 Anope Team <team@anope.org>
*
* This file is part of Anope. Anope 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, version 2.
*
* 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, see see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include "services.h"
#include "anope.h"
#include "base.h"
/** Anything that inherits from this class can be referred to
* using ServiceReference. Any interfaces provided by modules,
* such as commands, use this. This is also used for modules
* that publish a service (m_ssl_openssl, etc).
*/
class CoreExport Service : public virtual Base
{
Module *owner;
/* Service type, which should be the class name (eg "Command") */
Anope::string type;
/* Service name, commands are usually named service/command */
Anope::string name;
public:
Service(Module *o, const Anope::string &t, const Anope::string &n);
Service(Module *o, const Anope::string &t) : Service(o, t, "") { }
virtual ~Service();
Module *GetOwner() const { return owner; }
const Anope::string &GetType() const { return type; }
const Anope::string &GetName() const { return name; }
};
class ServiceReferenceBase
{
Anope::string type, name;
protected:
std::vector<Service *> services;
public:
ServiceReferenceBase() = default;
ServiceReferenceBase(const Anope::string &_type, const Anope::string &_name);
ServiceReferenceBase(const Anope::string &_type);
virtual ~ServiceReferenceBase();
explicit operator bool() const
{
return !this->services.empty();
}
const Anope::string &GetType() const { return type; }
const Anope::string &GetName() const { return name; }
Service *GetService() const { return services.empty() ? nullptr : services[0]; }
const std::vector<Service *> &GetServices() const { return services; }
void SetService(Service *service);
void SetServices(const std::vector<Service *> &s);
};
template<typename T>
class ServiceReference : public ServiceReferenceBase
{
static_assert(std::is_base_of<Service, T>::value, "");
public:
ServiceReference() : ServiceReferenceBase(T::NAME) { }
ServiceReference(const Anope::string &n) : ServiceReferenceBase(T::NAME, n) { }
operator T*() const
{
return static_cast<T*>(GetService());
}
T* operator->() const
{
return static_cast<T*>(GetService());
}
T* operator*() const
{
return static_cast<T*>(GetService());
}
};
template<typename T>
class ServiceReferenceList : public ServiceReferenceBase
{
static_assert(std::is_base_of<Service, T>::value, "");
public:
using ServiceReferenceBase::ServiceReferenceBase;
std::vector<T *> GetServices() const
{
std::vector<T *> out;
std::transform(services.begin(), services.end(), std::back_inserter(out), [](Service *e) { return static_cast<T *>(e); });
return out;
}
};
class ServiceManager
{
std::vector<ServiceReferenceBase *> references; // managed references
std::vector<Service *> services; // all registered services
/* Lookup services for a reference */
void Lookup(ServiceReferenceBase *reference);
/* Lookup services for all managed references */
void LookupAll();
std::vector<Service *> FindServices(const Anope::string &type);
static ServiceManager *manager;
public:
Service *FindService(const Anope::string &name);
Service *FindService(const Anope::string &type, const Anope::string &name);
template<typename T>
std::vector<T> FindServices()
{
static_assert(std::is_base_of<Service, typename std::remove_pointer<T>::type>::value, "");
const char *type = std::remove_pointer<T>::type::NAME;
std::vector<Service *> s = FindServices(type);
std::vector<T> out;
std::transform(s.begin(), s.end(), std::back_inserter(out), [](Service *e) { return static_cast<T>(e); });
return out;
}
template<typename T>
T FindService(const Anope::string &name)
{
static_assert(std::is_base_of<Service, typename std::remove_pointer<T>::type>::value, "");
const char *type = std::remove_pointer<T>::type::NAME;
return static_cast<T>(FindService(type, name));
}
void Register(Service *service);
void Unregister(Service *service);
void RegisterReference(ServiceReferenceBase *reference);
void UnregisterReference(ServiceReferenceBase *reference);
static void Init();
static ServiceManager *Get();
static void Destroy();
};
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