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// This may look like C, but it's really -*- C++ -*-
//=============================================================================
/**
* @file IIOP_Profile.h
*
* $Id$
*
* IIOP profile specific processing
*
*
* @author Fred Kuhns <fredk@cs.wustl.edu>
*/
//=============================================================================
#ifndef TAO_IIOP_PROFILE_H
#define TAO_IIOP_PROFILE_H
#include /**/ "ace/pre.h"
#include "tao/Profile.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "tao/IIOP_Endpoint.h"
// TAO IIOP_Profile concrete Profile definitions
/**
* @class TAO_IIOP_Profile
*
* @brief This class defines the protocol specific attributes required
* for locating ORBs over a TCP/IP network.
*
* This class defines the IIOP profile as specified in the CORBA
* specification.
*/
class TAO_Export TAO_IIOP_Profile : public TAO_Profile
{
public:
/// The object key delimiter that IIOP uses or expects.
static const char object_key_delimiter_;
virtual char object_key_delimiter (void) const;
/// Return the char string prefix.
static const char *prefix (void);
/// Profile constructor, same as above except the object_key has
/// already been marshaled.
TAO_IIOP_Profile (const ACE_INET_Addr &addr,
const TAO::ObjectKey &object_key,
const TAO_GIOP_Message_Version &version,
TAO_ORB_Core *orb_core);
/// Profile constructor, this is the most efficient since it
/// doesn't require any address resolution processing.
TAO_IIOP_Profile (const char *host,
CORBA::UShort port,
const TAO::ObjectKey &object_key,
const ACE_INET_Addr &addr,
const TAO_GIOP_Message_Version &version,
TAO_ORB_Core *orb_core);
/// Profile constructor, default.
TAO_IIOP_Profile (TAO_ORB_Core *orb_core);
/// Destructor is to be called only through <_decr_refcnt>.
~TAO_IIOP_Profile (void);
/// Template methods. Please see Profile.h for documentation.
virtual char * to_string (ACE_ENV_SINGLE_ARG_DECL);
/// Encode endpoints for RT profiles, using a single TAO_TAG_ENDPOINT
/// component.
virtual int encode_endpoints (void);
/// Encode alternate endpoints for non-RT profiles, using multiple
/// TAG_ALTERNATE_IIOP_ADDRESS components, one endpoint per component
virtual int encode_alternate_endpoints (void);
virtual TAO_Endpoint *endpoint (void);
virtual CORBA::ULong endpoint_count (void) const;
virtual CORBA::ULong hash (CORBA::ULong max
ACE_ENV_ARG_DECL);
/**
* Add @a endp to this profile's list of endpoints (it is inserted
* next to the head of the list). This profiles takes ownership of
* @a endp.
*/
void add_endpoint (TAO_IIOP_Endpoint *endp);
protected:
/**
* Helper method for encode_endpoints to deal with RT requests.
*
* Encodes this profile's endpoints into a tagged component.
* This is done only if RTCORBA is enabled, since currently this is
* the only case when we have more than one endpoint per profile.
* Returns 0 on success and -1 on failure.
*
* Endpoints are transmitted using TAO-proprietory tagged component.
* Component tag is TAO_TAG_ENDPOINTS and component data is an
* encapsulation of a sequence of structs, each representing a
* single endpoint. Data format is specified in iiop_endpoins.pidl.
*/
int encode_endpoints_for_rt (void);
/// Template methods. Please see Profile.h for the documentation.
virtual int decode_profile (TAO_InputCDR &cdr);
virtual int decode_endpoints (void);
virtual void parse_string_i (const char *string
ACE_ENV_ARG_DECL);
virtual void create_profile_body (TAO_OutputCDR &cdr) const;
virtual CORBA::Boolean do_is_equivalent (const TAO_Profile *other_profile);
protected:
/**
* Head of this profile's list of endpoints. This endpoint is not
* dynamically allocated because a profile always contains at least
* one endpoint.
*
* Currently, a profile contains more than one endpoint, i.e.,
* list contains more than just the head, only for two cases
* (1) when RTCORBA is enabled and
* (2) the ORB is initialized with -ORBPreferredInterfaces option.
* However, in the near future, this will be used in for mode as
* well, e.g., to support TAG_ALTERNATE_IIOP_ADDRESS feature.
*
* This is probably as good a place to discuss how the list of
* endpoints is used for #2. If the ORB is configured to use
* preferred interfaces for invocation, TAO creates an endpoint per
* preferred interface. To be clear, every tuple
* <destination:target> will have an endpoint. What TAO essentially
* does is that creates it multiple endpoints so that the invocation
* code path can use existing iterating techniques to try one
* preferred interface after another (if the first did not work). If
* the ORB is configured with -ORBEnforcePreferredInterface set to
* false in addition to the ORBPreferredInterfaces option , TAO
* creates another endpoint with the preferred bit set to null, so
* that the invocation code can fall back to a TCP stack returned
* local address.
* Addressing info of the default endpoint, i.e., head of the list,
* is transmitted using standard IIOP ProfileBody components. See
* <encode_endpoints> method documentation above for how the rest of
* the endpoint list is transmitted.
*/
TAO_IIOP_Endpoint endpoint_;
/// Number of endpoints in the list headed by <endpoint_>.
CORBA::ULong count_;
};
#include /**/ "ace/post.h"
#endif /* TAO_IIOP_PROFILE_H */
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