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// -*- C++ -*-
// $Id$
// ============================================================================
//
// = LIBRARY
// orbsvcs
//
// = FILENAME
// LoadBalancer_i.h
//
// = AUTHOR
// Ossama Othman <ossama@uci.edu>
//
// ============================================================================
#ifndef TAO_LOADBALANCER_I_H
#define TAO_LOADBALANCER_I_H
#include "orbsvcs/LoadBalancingS.h"
#include "orbsvcs/LoadBalancing/ReplicaProxy.h"
#include "orbsvcs/LoadBalancing/DSI_ForwardingProxy.h"
#include "orbsvcs/LoadBalancing/LoadBalancing_Strategy.h"
class TAO_LoadBalancing_Export LoadBalancer_Impl : public virtual POA_LoadBalancing::LoadBalancer
{
public:
LoadBalancer_Impl (const char *interface_id,
Load_Balancing_Strategy *strategy,
PortableServer::POA_ptr poa);
// Constructor that initializes this Load Balancer for use with a
// Replica that has the specified interface repository ID.
~LoadBalancer_Impl (void);
// Destructor.
virtual LoadBalancing::ReplicaProxy_ptr connect (
LoadBalancing::ReplicaControl_ptr control,
CORBA::Object_ptr replica,
CORBA::Environment &ACE_TRY_ENV)
ACE_THROW_SPEC ((LoadBalancing::ReplicaProxy::NilControl,
LoadBalancing::ReplicaProxy::NilReplica,
CORBA::SystemException));
// Register ReplicaControl and Object being load balanced with
// ReplicaProxy and connect to Load Balancer.
virtual CORBA::Object_ptr group_identity (CORBA::Environment &ACE_TRY_ENV)
ACE_THROW_SPEC ((CORBA::SystemException));
// Return the reference to the object that represents the Replica
// group being load balanced. This "group identity" object will
// cause the client to redirect its requests to a Replica that fits
// a specific load balancing criteria.
// Local methods
void load_changed (ReplicaProxy_Impl *proxy,
CORBA::Environment &ACE_TRY_ENV);
void disconnect (ReplicaProxy_Impl *proxy,
CORBA::Environment &ACE_TRY_ENV)
ACE_THROW_SPEC ((CORBA::SystemException));
// Disconnect proxy from the Load Balancer.
CORBA::Object_ptr replica (CORBA::Environment &ACE_TRY_ENV)
ACE_THROW_SPEC ((CORBA::SystemException));
// Return a reference to the Replica to which client requests should
// be redirected next.
private:
DSI_ForwardingProxy redirector_;
// The object that tells the invoking client to forward its requests
// from the LoadBalancer to an actual replica.
Load_Balancing_Strategy *strategy_;
// The underlying load balancing strategy.
PortableServer::POA_var poa_;
// The POA where the forwarding proxy is activated.
CORBA::Object_var group_identity_;
// The group identity
};
#if defined (__ACE_INLINE__)
#include "LoadBalancer_i.i"
#endif /* __ACE_INLINE__ */
#endif /* TAO_LOADBALANCER_I_H */
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