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// -*- C++ -*-
// $Id$
// ============================================================================
//
// = LIBRARY
// TAO
//
// = FILENAME
// Pluggable_Messaging.h
//
// = DESCRIPTION
// Interface for the TAO pluggable messaging framework.
//
// = AUTHOR
// Balachandran Natarajan <bala@cs.wustl.edu>
//
// ============================================================================
#ifndef _TAO_PLUGGABLE_MESSAGE_H_
#define _TAO_PLUGGABLE_MESSAGE_H_
#include "tao/corbafwd.h"
#include "tao/Pluggable.h"
#include "tao/target_identifier.h"
#include "tao/Pluggable_Messaging_Utils.h"
class TAO_Message_State_Factory;
class TAO_Export TAO_Pluggable_Messaging_Interface
{
// = TITLE
// Generic definitions Messaging class.
//
// = DESCRIPTION
//
public:
virtual ~TAO_Pluggable_Messaging_Interface (void);
// Dtor
virtual int handle_input (TAO_Transport *transport,
TAO_ORB_Core *orb_core,
TAO_Message_State_Factory &mesg_state,
ACE_Time_Value *max_time_value) = 0;
virtual CORBA::Boolean
write_message_header (const TAO_Pluggable_Connector_Params ¶ms,
TAO_Pluggable_Header_Type header_type,
TAO_Target_Specification &spec,
TAO_OutputCDR &msg) = 0;
// Write the header.
virtual int send_message (TAO_Transport *transport,
TAO_OutputCDR &stream,
ACE_Time_Value *max_wait_time = 0,
TAO_Stub *stub = 0) = 0;
// Send message, returns TRUE if success, else FALSE.
virtual CORBA::Boolean write_protocol_header (TAO_Pluggable_Message_Type t,
TAO_OutputCDR &msg) = 0;
// Start writing the header for a message in to the stream <msg>
virtual int parse_reply (TAO_Message_State_Factory &state,
TAO_Pluggable_Connector_Params ¶ms,
CORBA::ULong &reply_status) = 0;
// Parse the reply..
virtual int process_connector_messages (TAO_Transport *transport,
TAO_ORB_Core *orb_core,
TAO_InputCDR &input,
CORBA::Octet message_type) = 0;
// Process messages from the connectors
};
class TAO_Export TAO_Message_State_Factory
{
// = TITLE
// Generic definitions for Message States.
//
// = DESCRIPTION
// This would represnt the state of the incoming message states.
// As the ORB processes incoming messages it need to keep track of
// how much of the message has been read. if there are any
// fragments following this message etc. This class attempts to
// give a generic interface to all the messaging protocols message
// states so that the Transport layer does not really know with
// whom it is interacting with.
public:
virtual ~TAO_Message_State_Factory (void);
// Dtor
virtual void reset (int reset_contents = 1) = 0;
// Reset the message header state and prepare it to receive the next
// event.
virtual CORBA::Boolean header_received (void) const = 0;
// Has the header been received?
virtual int is_complete (void) = 0;
// Check if the current message is complete, adjusting the fragments
// if required...
private:
};
#if defined (__ACE_INLINE__)
# include "tao/Pluggable_Messaging.i"
#endif /* __ACE_INLINE__ */
#endif /*_TAO_PLUGGABLE_MESSAGE_H_*/
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