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//-*- C++ -*-
//=============================================================================
/**
* @file Fault_Tolerance_Service.h
*
* $Id$
*
* A collection of the ORB and ORB core related properties that are
* specific to FT service. The TAO_ORB_Core holds an instance of this
* class.
*
*
* @author Bala Natarajan <bala@cs.wustl.edu>
*/
//=============================================================================
#ifndef TAO_FAULT_TOLERANCE_SERVICE_H
#define TAO_FAULT_TOLERANCE_SERVICE_H
#include /**/ "ace/pre.h"
#include "ace/SString.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "tao/TAO_Export.h"
#include "tao/Basic_Types.h"
class ACE_Lock;
class TAO_Service_Callbacks;
class TAO_ORB_Core;
class ACE_Lock;
/**
* @class TAO_Fault_Tolerance_Service
*
* @brief TAO_Fault_Tolerant_Service
*
* A collection of ORB & ORB_Core related stuff that is needed at
* the ORB level. The ORB Core would carry an instance of this
* class and invoke methods on this.
* Note: This collection would be really useful when we have
* logging in place. The contents of this class can be logged at
* regular check point intervals.
*/
class TAO_Export TAO_Fault_Tolerance_Service
{
public:
/// Ctor
TAO_Fault_Tolerance_Service (void);
/// Dtor
~TAO_Fault_Tolerance_Service (void);
/// Initialise the internal data structures
void init (TAO_ORB_Core *orb_core);
/// Return the underlying callback object
TAO_Service_Callbacks *service_callback (void);
/// Return the underlying <ft_object_id>
const ACE_CString &client_id (void);
/// Set the client id
void client_id (const char *id);
/// Generate and return a new retention id
CORBA::Long retention_id (void);
private:
/// hook to callback on to the service
TAO_Service_Callbacks *ft_service_callback_;
/// The object id that would be used if the ft service is loaded.
ACE_CString ft_object_id_;
/**
* This and the <ft_object_id_> act as unique identifiers for the
* request sent from the source Object. Modification of this value
* is done by the loaded FT
*/
CORBA::Long ft_object_retention_id_;
/// Lock for the retention id
ACE_Lock *ft_object_retention_id_lock_;
// NOTE: At a glance this retention id can be easily mistaken for a
// request id in a GIOP request. But the purpose served are a lot
// more than what a RequestId does for GIOP. So, we have a unique
// generator with a lock to protect from different threads accessing
// this.
};
#if defined (__ACE_INLINE__)
# include "tao/Fault_Tolerance_Service.i"
#endif /* __ACE_INLINE__ */
#include /**/ "ace/post.h"
#endif /*TAO_FAULT_TOLERANCE_SERVICE_H*/
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