lmsg/MsgHandler.hh

/* -*- mode: c++; c-basic-offset: 4; -*- */
#ifndef LMSG_MSGHANDLER_HH
#define LMSG_MSGHANDLER_HH
//
//   Base class for server message handlers.
//

#include "lmsg/MsgTypes.hh"

namespace lmsg {

    class MsgHeader;
    class Message;
    class AppServer;
    class Buffer;


    class MsgHandler {
    public:
        MsgHandler(void);

        virtual ~MsgHandler(void);

        error_type handleBuffer(AppServer& app, Buffer& buf);

        virtual error_type handleMsg(AppServer& app, const MsgHeader& hdr) = 0;

        virtual Message& getMessage(void) = 0;
    private:
    };

    template<class Msg> 
    class Handler : public MsgHandler {
    public:

        Handler(void);

        ~Handler(void);

        error_type handleMsg(AppServer& app, const MsgHeader& hdr);

        Msg& getMessage(void);

        const Msg& getMessage(void) const;

    private:
        Msg mMessage;
    };

}  // namespace lmsg

//--------------------------------------  Default constructor
template<class Msg>
lmsg::Handler<Msg>::Handler(void) {
}

//--------------------------------------  Default destructor
template<class Msg>
lmsg::Handler<Msg>::~Handler(void) {
}

//--------------------------------------  Get the scratch message
template<class Msg>
Msg&
lmsg::Handler<Msg>::getMessage(void) {
    return mMessage;
}

template<class Msg>
const Msg&
lmsg::Handler<Msg>::getMessage(void) const {
    return mMessage;
}


#endif  //  LMSG_MSGHANDLER_HH

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