stservicemanager.hxx

SIP（Session Initiation Protocol）是由IETF定义

#if !defined(VOCAL_ST_SERVICE_MANAGER_HXX)
#define VOCAL_ST_SERVICE_MANAGER_HXX

/* ====================================================================
 * The Vovida Software License, Version 1.0 
 * 
 * Copyright (c) 2000 Vovida Networks, Inc.  All rights reserved.
 * 
 * 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.
 * 
 * 3. The names "VOCAL", "Vovida Open Communication Application Library",
 *    and "Vovida Open Communication Application Library (VOCAL)" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact [e-mail].
 *
 * 4. Products derived from this software may not be called "VOCAL", nor
 *    may "VOCAL" appear in their name, without prior written
 *    permission of Vovida Networks, Inc.
 * 
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND
 * NON-INFRINGEMENT ARE DISCLAIMED.  IN NO EVENT SHALL VOVIDA
 * NETWORKS, INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT DAMAGES
 * IN EXCESS OF $1,000, NOR FOR ANY 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.
 * 
 * ====================================================================
 * 
 * This software consists of voluntary contributions made by Vovida
 * Networks, Inc. and many individuals on behalf of Vovida Networks,
 * Inc.  For more information on Vovida Networks, Inc., please see
 * <http://www.vovida.org/>.
 *
 */


static const char* const STServiceManager_hxx_Version = 
    "$Id: STServiceManager.hxx,v 1.1 2001/10/26 21:47:52 icahoon Exp $";


#include "ServiceManager.hxx"
#include "EventObserver.hxx"
#include "FifoBase.h"
#include "Event.hxx"
#include "Sptr.hxx"


/** Infrastructure common to VOCAL.
 */
namespace Vocal 
{


/** Infrastructure common to VOCAL to provide event based services.<br><br>
 */
namespace Services
{


using Vocal::Behavioral::EventObserver;


/** 
 */
class STServiceManager : public Vocal::Services::ServiceManager
{

    public:

    	/** Create the service manager, given the fifo that the
         *  will use.
    	 */    
    	STServiceManager(SignalAction * signalAction = 0);
	

    	/** Virtual destructor
    	 */    
	virtual ~STServiceManager();


    	/** Request the service manager to manage the given service.
	 */	
	virtual void	        manage(Service &);


    	/** Request the service manager to unmanage the service.
	 */	
	virtual void	        unmanage();


	/** Starts managed service. 
	 */
	virtual ReturnCode	start();


    	/** Blocks waiting for either a signal.
	 */
	virtual ReturnCode	run();


	/** Stops managed service.
	 */
	virtual	void	 	stop();


	/** Shuts down manage service.
	 */
	virtual	void	    	shutdown();


    protected:
    

        class STSMObserver 
            : public Vocal::Behavioral::EventObserver< Sptr<Event> >
        {
            public:
            
                STSMObserver(Service & service);

                virtual ~STSMObserver();
                
    	        virtual bool        interestedIn(const Sptr<Event> & event);
    	        virtual void        onEvent(Sptr<Event>);
                ostream &           writeTo(ostream & out) const;
            private:
                
                Service                 &   myService;
        };
        
        Service                     *   myService;
    	STSMObserver                *   myObserver;
};


} // namespace Services
} // namespace Vocal


#endif // !defined(VOCAL_ST_SERVICE_MANAGER_HXX)