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// -*- C++ -*-
//=============================================================================
/**
* @file LB_ReplicaLocator.h
*
* $Id$
*
* @author Ossama Othman <ossama@uci.edu>
*/
//=============================================================================
#ifndef TAO_LB_REPLICA_LOCATOR_H
#define TAO_LB_REPLICA_LOCATOR_H
#include "ace/pre.h"
#include "ace/config-all.h"
# if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
# endif /* ACE_LACKS_PRAGMA_ONCE */
#include "tao/PortableServer/PortableServerC.h"
// Forward declaration.
class TAO_LoadBalancing_ReplicationManager_i;
/**
* @class TAO_LB_ReplicaLocator
*
* @brief ServantLocator implementation for the Load Balancer.
*
* This is a Servant Locator implementation that forwards requests to
* a replica returned by the Load Balancer.
*/
class TAO_LB_ReplicaLocator
: public virtual PortableServer::ServantLocator
{
public:
/// Constructor
TAO_LB_ReplicaLocator (TAO_LB_LoadBalancer *load_balancer);
/**
* @name The PortableServer::ServantLocator methods.
*/
//@{
/// Clients requests are forwarded via the
/// PortableServer::ForwardRequest exception thrown in this method.
virtual PortableServer::Servant preinvoke (
const PortableServer::ObjectId &oid,
PortableServer::POA_ptr adapter,
const char *operation,
PortableServer::ServantLocator::Cookie & the_cookie
TAO_ENV_ARG_DECL)
ACE_THROW_SPEC ((CORBA::SystemException,
PortableServer::ForwardRequest));
/// This method is no-op in this ServantLocator implementation.
virtual void postinvoke (
const PortableServer::ObjectId &oid,
PortableServer::POA_ptr adapter,
const char *operation,
PortableServer::ServantLocator::Cookie the_cookie,
PortableServer::Servant the_servant
TAO_ENV_ARG_DECL)
ACE_THROW_SPEC ((CORBA::SystemException));
//@}
private:
/// The load balancer implementation.
TAO_LoadBalancing_ReplicationManager_i *load_balancer_;
};
#include "ace/post.h"
#endif /* TAO_LB_REPLICA_LOCATOR_H */
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