source: source/ariba/utility/misc/Demultiplexer.hpp@ 5658

// [License]
// The Ariba-Underlay Copyright
//
// Copyright (c) 2008-2009, Institute of Telematics, UniversitÀt Karlsruhe (TH)
//
// Institute of Telematics
// UniversitÀt Karlsruhe (TH)
// Zirkel 2, 76128 Karlsruhe
// Germany
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE INSTITUTE OF TELEMATICS ``AS IS'' AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE ARIBA PROJECT OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// The views and conclusions contained in the software and documentation
// are those of the authors and should not be interpreted as representing
// official policies, either expressed or implied, of the Institute of
// Telematics.
// [License]

#ifndef DEMULTIPLEXER_H__
#define DEMULTIPLEXER_H__

#include <list>
#include <iostream>
#include <map>
#include <boost/thread/mutex.hpp>
#include <boost/foreach.hpp>
#include "ariba/utility/messages/Message.h"

using std::cout;
using std::list;
using std::map;
using std::pair;
using ariba::utility::Message;

namespace ariba {
namespace utility {

template<typename S, typename T>
class Demultiplexer
{
private:

        typedef map<S,T>                                        SERVICE_LISTENER_MAP;
        typedef pair<S,T>                                       SERVICE_LISTENER_PAIR;
        typedef typename SERVICE_LISTENER_MAP::iterator         SERVICE_LISTENER_MAP_ITERATOR;
        typedef typename SERVICE_LISTENER_MAP::const_iterator   SERVICE_LISTENER_MAP_CITERATOR;

        typedef map<T,S>                                        LISTENER_SERVICE_MAP;
        typedef pair<T,S>                                       LISTENER_SERVICE_PAIR;
        typedef typename LISTENER_SERVICE_MAP::iterator         LISTENER_SERVICE_MAP_ITERATOR;
        typedef typename LISTENER_SERVICE_MAP::const_iterator   LISTENER_SERVICE_MAP_CITERATOR;

        SERVICE_LISTENER_MAP                                    mapServiceListener;
        LISTENER_SERVICE_MAP                                    mapListenerService;
        boost::mutex                                            mapMutex;

        void debugprint() {
                cout << "-------------start--------" << std::endl;
                {
                        LISTENER_SERVICE_MAP_CITERATOR i = mapListenerService.begin();
                        LISTENER_SERVICE_MAP_CITERATOR iend = mapListenerService.end();

                        for( ; i != iend; i++ )
                                cout << "xxx" << i->first.toString() << " -> " << i->second << std::endl;
                }
                cout << "-----------------------" << std::endl;
                {
                        SERVICE_LISTENER_MAP_CITERATOR i = mapServiceListener.begin();
                        SERVICE_LISTENER_MAP_CITERATOR iend = mapServiceListener.end();

                        for( ; i != iend; i++ )
                                cout << "xxx" << i->first << " -> " << i->second.toString() << std::endl;
                }
                cout << "-------------end---------" << std::endl;
        }

public:

        Demultiplexer() {
        }

        ~Demultiplexer() {
        }

        void registerItem( S id, T listener ) {
                boost::mutex::scoped_lock lock( mapMutex );

                mapServiceListener.insert( SERVICE_LISTENER_PAIR( id, listener ) );
                mapListenerService.insert( LISTENER_SERVICE_PAIR( listener, id ) );
        }

        void unregisterItem( S id ) {
                T listener = get( id );

                {
                        boost::mutex::scoped_lock lock( mapMutex );
                        mapServiceListener.erase( id );
                        mapListenerService.erase( listener );
                }
        }

        void unregisterItem( T listener ) {
                S id = get( listener );
                unregisterItem( id );
        }

        S get( T listener ) {
                boost::mutex::scoped_lock lock( mapMutex );

                LISTENER_SERVICE_MAP_CITERATOR it = mapListenerService.find( listener );
                return it->second;
        }

        T get( S id ) {
                boost::mutex::scoped_lock lock( mapMutex );

                SERVICE_LISTENER_MAP_CITERATOR it = mapServiceListener.find( id );
                if( it == mapServiceListener.end() )    return NULL;
                else                                    return it->second;
        }

        bool contains( T listener ) {
                boost::mutex::scoped_lock lock( mapMutex );

                LISTENER_SERVICE_MAP_CITERATOR it = mapListenerService.find( listener );
                return ( it != mapListenerService.end() );
        }

        bool contains( S id ) {
                boost::mutex::scoped_lock lock( mapMutex );

                SERVICE_LISTENER_MAP_CITERATOR it = mapServiceListener.find( id );
                return ( it != mapServiceListener.end() );
        }

        typedef list<S> OneList;
        typedef list<T> TwoList;

        OneList getOneList() {
                boost::mutex::scoped_lock lock( mapMutex );
                OneList ret;

                BOOST_FOREACH( SERVICE_LISTENER_PAIR i, mapServiceListener ){
                        ret.push_back( i.first );
                }

                return ret;
        }

        TwoList getTwoList() {
                boost::mutex::scoped_lock lock( mapMutex );
                TwoList ret;

                BOOST_FOREACH( SERVICE_LISTENER_PAIR  i, mapServiceListener ){
                        ret.push_back( i.first );
                }

                return ret;
        }

};

}} // namespace ariba, common

#endif // DEMULTIPLEXER_H__