#include "Consumer.h"

#include "tao/debug.h"

#include "ace/High_Res_Timer.h"
#include "ace/Stats.h"
#include "ace/Throughput_Stats.h"
#include "ace/OS_NS_stdio.h"
#include "ace/OS_NS_unistd.h"

TAO_Notify_ThreadPool_Consumer::TAO_Notify_ThreadPool_Consumer (TAO_Notify_ORB_Objects& orb_objects)
  : orb_objects_ (orb_objects)
    , proxy_supplier_thread_count_ (0)
    , max_events_ (10)
    , events_received_count_ (0)
    , t_first_ (0)
    , t_last_ (0)
{
}

TAO_Notify_ThreadPool_Consumer::~TAO_Notify_ThreadPool_Consumer (void)
{
}

void
TAO_Notify_ThreadPool_Consumer::init (PortableServer::POA_var& poa, CosNotifyChannelAdmin::ConsumerAdmin_var& admin,
                       int proxy_supplier_thread_count, int max_events, long delay)
{
  this->default_POA_ = poa;
  this->admin_ = admin;
  this->proxy_supplier_thread_count_ = proxy_supplier_thread_count;
  this->max_events_ = max_events;
  this->delay_ = ACE_Time_Value (delay, 0);

  ACE_DEBUG ((LM_DEBUG, "(%P, %t)Consumer Delay = %d, param = %d\n", delay_.sec (), delay));

  this->connect ();
}

PortableServer::POA_ptr
TAO_Notify_ThreadPool_Consumer::_default_POA (void)
{
  return PortableServer::POA::_duplicate (this->default_POA_.in ());
}

void
TAO_Notify_ThreadPool_Consumer::run (void)
{
  // Nothing to do.
}

void
TAO_Notify_ThreadPool_Consumer::connect (void)
{
  // Activate the consumer with the default_POA_
  CosNotifyComm::StructuredPushConsumer_var objref = this->_this ();

  CosNotifyChannelAdmin::ProxySupplier_var proxysupplier;

  if (this->proxy_supplier_thread_count_ != 0)
    {
      // Narrow to the extended interface.
      NotifyExt::ConsumerAdmin_var admin_ext = NotifyExt::ConsumerAdmin::_narrow (this->admin_.in ());

      NotifyExt::ThreadPoolParams tp_params = { NotifyExt::CLIENT_PROPAGATED, 0,
                                                0, static_cast<CORBA::ULong> (this->proxy_supplier_thread_count_),
                                                0, 0, 0, 0, 0 };

      CosNotification::QoSProperties qos (1);
      qos.length (1);
      qos[0].name = CORBA::string_dup (NotifyExt::ThreadPool);
      qos[0].value <<= tp_params;

      // Obtain the proxy. The QoS is applied to the POA in which the Proxy is hosted.
      proxysupplier = admin_ext->obtain_notification_push_supplier_with_qos (CosNotifyChannelAdmin::STRUCTURED_EVENT
                                                                                   , proxy_supplier_id_, qos);
    }
  else
    {
      proxysupplier = this->admin_->obtain_notification_push_supplier (CosNotifyChannelAdmin::STRUCTURED_EVENT
                                                                       , proxy_supplier_id_);
    }

  ACE_ASSERT (!CORBA::is_nil (proxysupplier.in ()));

  // narrow
  this->proxy_supplier_ =
    CosNotifyChannelAdmin::StructuredProxyPushSupplier::_narrow (proxysupplier.in ());

  ACE_ASSERT (!CORBA::is_nil (proxy_supplier_.in ()));

  this->proxy_supplier_->connect_structured_push_consumer (objref.in ());

  // Call subscription_change to inform the supplier that this consumer is available.
  CosNotification::EventTypeSeq added (1);
  CosNotification::EventTypeSeq removed;

  added.length (1);
  added[0].domain_name = CORBA::string_dup ("TEST_DOMAIN");

  /* We generate a unique Id for the consumer type so that the supplier can distinguish between the consumers.*/
  char type[BUFSIZ];
  ACE_OS::sprintf (type, "TEST_TYPE_%d", this->proxy_supplier_id_);

  added[0].type_name = CORBA::string_dup (type);

  this->proxy_supplier_->subscription_change (added, removed);

  ACE_DEBUG ((LM_DEBUG, "(%P,%t) Created Consumer %d with %d threads at the ProxySupplier\n", proxy_supplier_id_,
              this->proxy_supplier_thread_count_));
}

void
TAO_Notify_ThreadPool_Consumer::disconnect (void)
{
  this->proxy_supplier_->disconnect_structured_push_supplier();
}

void
TAO_Notify_ThreadPool_Consumer::offer_change (const CosNotification::EventTypeSeq & /*added*/,
                               const CosNotification::EventTypeSeq & /*removed*/
                               )
{
  // No-Op.
}

void
TAO_Notify_ThreadPool_Consumer::push_structured_event (const CosNotification::StructuredEvent & /*notification*/
                                            )
{
  ACE_GUARD (TAO_SYNCH_MUTEX, ace_mon, this->lock_);

  if (TAO_debug_level > 0)
    ACE_DEBUG ((LM_DEBUG, "(%P, %t) Consumer received event %d\n",
                this->events_received_count_));

  // Increment the received count.
  ++this->events_received_count_;

  if (this->events_received_count_ == 1)
    {
      this->t_first_ = ACE_OS::gethrtime ();
    }
  else if (this->events_received_count_ == this->max_events_)
    {
      this->t_last_ = ACE_OS::gethrtime ();

      // Disconnect from the EC
      this->disconnect ();

      // Deactivate this object.
      this->deactivate ();

      // We received the event, shutdown the ORB.
      this->orb_objects_.orb_->shutdown (1);
    }

  // Eat CPU:
  ACE_OS::sleep (this->delay_);
}

void
TAO_Notify_ThreadPool_Consumer::dump_throughput (void)
{
  ACE_High_Res_Timer::global_scale_factor_type gsf =
    ACE_High_Res_Timer::global_scale_factor ();

  ACE_DEBUG ((LM_DEBUG, "(%P,%t) Consumer %d\n", proxy_supplier_id_));

  ACE_Throughput_Stats::dump_throughput (ACE_TEXT("Total"), gsf,
                                         t_last_ - t_first_,
                                         this->max_events_);
}

void
TAO_Notify_ThreadPool_Consumer::deactivate (void)
{
  PortableServer::POA_var poa (this->_default_POA ());

  PortableServer::ObjectId_var id (poa->servant_to_id (this));

  poa->deactivate_object (id.in());
}

void
TAO_Notify_ThreadPool_Consumer::disconnect_structured_push_consumer (void)
{
  this->deactivate ();
}
