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// -*- C++ -*-
//=============================================================================
/**
* @file FT_Service_Callbacks.h
*
* $Id$
*
* A concrete FT service callback implementation
*
* @author Balachandran Natarajan <bala@cs.wustl.edu>
*/
//=============================================================================
#ifndef TAO_FT_CALLBACKS_H
#define TAO_FT_CALLBACKS_H
#include /**/ "ace/pre.h"
#include "orbsvcs/FaultTolerance/FT_ClientORB_export.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "tao/Service_Callbacks.h"
#include "orbsvcs/FT_CORBA_ORBC.h"
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
class TAO_Profile;
class TAO_MProfile;
class TAO_ORB_Core;
/**
* @class TAO_FT_Service_Callbacks
*
* @brief A class to dynamically load the FT callback implementations in
* to the ORB.
*
* An implementation of the service callbacks that allows the
* loading of the FT ORB level library in to the ORB
*/
class TAO_FT_ClientORB_Export TAO_FT_Service_Callbacks : public TAO_Service_Callbacks
{
public:
/// Constructor
TAO_FT_Service_Callbacks (TAO_ORB_Core *orb_core);
/// Dtor
virtual ~TAO_FT_Service_Callbacks (void);
/// Select the profile from MProfile as the needs of the services
/// may be. Return the profile in <pfile>
virtual CORBA::Boolean select_profile (const TAO_MProfile &mprofile,
TAO_Profile *&pfile);
/// Check whether <obj> is nil or not. FT spec suggests some
/// extensions for a CORBA::is_nil () operation.
virtual CORBA::Boolean object_is_nil (CORBA::Object_ptr obj);
/// Check for equivalency of the two profiles
virtual TAO_Service_Callbacks::Profile_Equivalence is_profile_equivalent (
const TAO_Profile *,
const TAO_Profile *);
/// Calculate the hash
virtual CORBA::ULong hash_ft (TAO_Profile *p,
CORBA::ULong m);
/// Verify condition for permanent forward is given,
/// both parameters must provide group attributes.
virtual CORBA::Boolean is_permanent_forward_condition
(const CORBA::Object_ptr obj,
const TAO_Service_Context &service_context) const;
/// Check whether we need to raise an exception or go for a
/// reinvocaton.
virtual TAO::Invocation_Status raise_comm_failure (
IOP::ServiceContextList &clist,
TAO_Profile *profile);
/// Check whether we need to raise an exception or go for a
/// reinvocaton.
virtual TAO::Invocation_Status raise_transient_failure (
IOP::ServiceContextList &clist,
TAO_Profile *profile);
static TimeBase::TimeT now (void);
private:
/// Check whether the right flags are available so that we can issue a
/// restart.
CORBA::Boolean restart_policy_check (IOP::ServiceContextList &service_list,
const TAO_Profile *profile);
private:
/// The ORB core in which we have been activated
TAO_ORB_Core *orb_core_;
/// Mutex to protect access to the profile that gets passed along
/// @@ Lock needs to be removed...
ACE_Lock* profile_lock_;
};
TAO_END_VERSIONED_NAMESPACE_DECL
#include /**/ "ace/post.h"
#endif /*TAO_FT_CALLBACKS_H*/
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