src/Subscriber.hh

/*
 * This file is part of peekabot.
 *
 * peekabot 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 3 of the License, or
 * (at your option) any later version.
 *
 * peekabot 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 <http://www.gnu.org/licenses/>.
 */

#ifndef __PEEKABOT_SUBSCRIBER_HH
#define __PEEKABOT_SUBSCRIBER_HH


#include <set>
#include <boost/thread/recursive_mutex.hpp>

#include "Message.hh"


namespace peekabot
{


    class Subscriber
    {
        friend class MessageHub;

    public:
        virtual void handle_message(const Message &) throw() = 0;

        virtual ~Subscriber();

    private:
        void add_subscription(MessageType type, MessageHub *hub) throw();

        void remove_subscription(MessageType type, MessageHub *hub) throw();

    private:
        typedef std::set<std::pair<MessageType, MessageHub *> > SubscriptionSet;

        SubscriptionSet m_subscriptions;

        mutable boost::recursive_mutex m_mutex;
    };

}


#endif // __PEEKABOT_SUBSCRIBER_HH