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// -*- C++ -*-
// $Id$
// ============================================================================
//
// = LIBRARY
// TAO_LoadBalancing
//
// = FILENAME
// LoadBalancing_Strategy.h
//
// = AUTHOR
// Ossama Othman <ossama@uci.edu>
//
// ============================================================================
#ifndef LOAD_BALANCING_STRATEGY_H
#define LOAD_BALANCING_STRATEGY_H
#include "ace/pre.h"
#include "orbsvcs/LoadBalancingS.h"
#include "LoadBalancing_export.h"
# if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
# endif /* ACE_LACKS_PRAGMA_ONCE */
class TAO_LB_ReplicaProxy;
// The abstract load balancing strategy class.
class TAO_LoadBalancing_Export TAO_LB_LoadBalancing_Strategy
{
// = TITLE
// Load balancing strategy abstract base class.
// = DESCRIPTION
// This abstract base class defines the interface load balancing
// strategies should implement.
public:
virtual ~TAO_LB_LoadBalancing_Strategy (void);
// Destructor
// @@ The name of the method should be more meaningful, what about:
// select_replica(), select_unloaded_replica() or something like
// that?
virtual CORBA::Object_ptr replica (ACE_ENV_SINGLE_ARG_DECL)
ACE_THROW_SPEC ((CORBA::SystemException)) = 0;
// Return the object reference to the Replica to which requests should
// be redirected.
virtual int insert (TAO_LB_ReplicaProxy *) = 0;
// Insert ReplicaProxy servant into the set of replica proxies upon
// which the load balancing algorithm is performed.
virtual int remove (TAO_LB_ReplicaProxy *) = 0;
// Remove ReplicaProxy servant from the set of replica proxies.
virtual void load_changed (TAO_LB_ReplicaProxy *proxy
ACE_ENV_ARG_DECL);
// The load on one proxy has changed.
// @@ Ossama: see my comments on LoadBalancing_i about changing the
// signature of this method.
};
#if !defined (__ACE_INLINE__)
#include "LoadBalancing_Strategy.i"
#endif /* __ACE_INLINE__ */
#include "ace/post.h"
#endif /* LOAD_BALANCING_STRATEGY_H */
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