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// -*- C++ -*-
// $Id$
#ifndef TAO_HASH_REPLICACONTROL_H
#define TAO_HASH_REPLICACONTROL_H
#include "Hash_Replica_i.h"
#include "orbsvcs/LoadBalancingS.h"
class Hash_ReplicaControl;
// @@ Ossama: notice how i integrated the reactor into the control
// loop, to periodically send the load...
class Timeout_Adapter : public ACE_Event_Handler
{
public:
Timeout_Adapter (Hash_ReplicaControl *adaptee);
// Receive the timeout event
virtual int handle_timeout (const ACE_Time_Value ¤t_time,
const void *arg);
private:
Hash_ReplicaControl *adaptee_;
};
// @@ Ossama: remember that we want to implement load balancing using
// interceptors.
class Hash_ReplicaControl : public virtual POA_LoadBalancing::ReplicaControl
{
public:
Hash_ReplicaControl (void);
// Constructor.
void init (CORBA::ORB_ptr the_orb,
LoadBalancing::LoadBalancer_ptr balancer,
CORBA::Environment &ACE_TRY_ENV);
int handle_timeout (const ACE_Time_Value ¤t_time,
const void *arg);
// Handle a timeout event
void request_received (void);
// A request has been received
void request_rejected (CORBA::Environment &ACE_TRY_ENV);
// A request has been rejected, take appropriate action
virtual void high_load_advisory (CORBA::Environment &ACE_TRY_ENV)
ACE_THROW_SPEC ((CORBA::SystemException));
virtual void nominal_load_advisory (CORBA::Environment &ACE_TRY_ENV)
ACE_THROW_SPEC ((CORBA::SystemException));
CORBA::Object_ptr replica (void);
// Return a reference to the replica being load balanced.
private:
Timeout_Adapter adapter_;
// Adapter
Hash_Replica_Impl replica_;
// Replica being load balanced.
LoadBalancing::ReplicaProxy_var proxy_;
// The proxy
CORBA::Object_var group_;
// The group identity
ACE_Time_Value interval_start_;
// The start of the current measurement interval
CORBA::ULong request_count_;
// The number of requests in the current interval
CORBA::Float current_load_;
// The current load
};
#endif /* TAO_HASH_REPLICACONTROL_H */
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