Base class for all types of ProxyConsumer implementations. More...

#include <ProxyConsumer.h>

Inheritance diagram for TAO_Notify_ProxyConsumer:

Collaboration diagram for TAO_Notify_ProxyConsumer:

Public Types
typedef TAO_Notify_Refcountable_Guard_T < TAO_Notify_ProxyConsumer >	Ptr
Public Member Functions
	TAO_Notify_ProxyConsumer (void)
	Constructor.
virtual	~TAO_Notify_ProxyConsumer (void)
	Destructor.
virtual void	init (TAO_Notify::Topology_Parent *topology_parent)
	init: overrides Topology_Object method
void	connect (TAO_Notify_Supplier *supplier)
	Connect.
void	disconnect (void)
	Disconnect.
virtual int	shutdown (void)
	Shutdown (TAO_Notify_Container_T method).
virtual void	destroy (void)
	Destroy this object.
bool	is_connected (void) const
	Return true if connected.
TAO_Notify_SupplierAdmin &	supplier_admin (void)
	The SA parent.
ACE_Time_Value	last_ping () const
void	last_ping (const ACE_Time_Value &tv)
Protected Member Functions
TAO_Notify_Supplier *	supplier (void)
	Access the Supplier.
void	push_i (TAO_Notify_Event *event)
	Accept an event from the Supplier.
Protected Attributes
ACE_Atomic_Op< TAO_SYNCH_MUTEX, ACE_Time_Value >	last_ping_
Private Member Functions
bool	supports_reliable_events () const
	Is this part of a reliable channel.
virtual TAO_Notify_Peer *	peer (void)
	Access our Peer.
Private Attributes
TAO_Notify_SupplierAdmin::Ptr	supplier_admin_
ACE_Auto_Ptr< TAO_Notify_Supplier >	supplier_
	The Supplier that we're connect to.

Detailed Description

Base class for all types of ProxyConsumer implementations.

Definition at line 39 of file ProxyConsumer.h.

Member Typedef Documentation

typedef TAO_Notify_Refcountable_Guard_T<TAO_Notify_ProxyConsumer> TAO_Notify_ProxyConsumer::Ptr

Reimplemented from TAO_Notify_Proxy.

Definition at line 43 of file ProxyConsumer.h.

Constructor & Destructor Documentation

TAO_Notify_ProxyConsumer::TAO_Notify_ProxyConsumer ( void )

Constructor.

Definition at line 32 of file ProxyConsumer.cpp.

  : supplier_admin_ (0)
{
}

TAO_Notify_ProxyConsumer::~TAO_Notify_ProxyConsumer ( void ) [virtual]

Destructor.

Definition at line 37 of file ProxyConsumer.cpp.

{
}

Member Function Documentation

void TAO_Notify_ProxyConsumer::connect ( TAO_Notify_Supplier * supplier )

Connect.

Definition at line 70 of file ProxyConsumer.cpp.

{
  // Adopt the supplier
  ACE_Auto_Ptr< TAO_Notify_Supplier > auto_supplier (supplier);

  TAO_Notify_Atomic_Property_Long& supplier_count = this->admin_properties().suppliers ();
  const TAO_Notify_Property_Long& max_suppliers = this->admin_properties().max_suppliers ();

  if (max_suppliers != 0 && supplier_count >= max_suppliers.value ())
  {
    throw CORBA::IMP_LIMIT (
      ); // we've reached the limit of suppliers connected.
  }

  {
    ACE_GUARD_THROW_EX (TAO_SYNCH_MUTEX, ace_mon, this->lock_,
                        CORBA::INTERNAL ());

    // if supplier is set and reconnect not allowed we get out.
    if (this->is_connected () && TAO_Notify_PROPERTIES::instance()->allow_reconnect() == false)
      {
        throw CosEventChannelAdmin::AlreadyConnected ();
      }

    // Adopt the supplier
    this->supplier_ = auto_supplier;

    this->supplier_admin_->subscribed_types (this->subscribed_types_); // get the parents subscribed types.
  }

  // Inform QoS values.
  ACE_ASSERT (this->supplier_.get() != 0);
  this->supplier_->qos_changed (this->qos_properties_);

  TAO_Notify_EventTypeSeq removed;

  this->event_manager().offer_change (this, this->subscribed_types_, removed);

  this->event_manager().connect (this);

  // Increment the global supplier count
  ++supplier_count;
}

void TAO_Notify_ProxyConsumer::destroy ( void ) [virtual]

Destroy this object.

Implements TAO_Notify_Proxy.

Definition at line 181 of file ProxyConsumer.cpp.

{
  this->shutdown ();
  this->supplier_admin_->cleanup_proxy (this, false, false);

  // Do not reset this->supplier_.
  // It is not safe to delete the non-refcounted supplier here.
}

void TAO_Notify_ProxyConsumer::disconnect ( void )

Disconnect.

Definition at line 152 of file ProxyConsumer.cpp.

{
  TAO_Notify_EventTypeSeq added;

  event_manager().offer_change (this, added, this->subscribed_types_);

  this->event_manager().disconnect (this);

  // Decrement the global supplier count
  this->admin_properties().suppliers ()--;
}

void TAO_Notify_ProxyConsumer::init ( TAO_Notify::Topology_Parent * topology_parent ) [virtual]

init: overrides Topology_Object method

Definition at line 48 of file ProxyConsumer.cpp.

{
  ACE_ASSERT( this->supplier_admin_.get() == 0 );

  TAO_Notify_Proxy::initialize (topology_parent);

  this->supplier_admin_.reset (dynamic_cast<TAO_Notify_SupplierAdmin *>(topology_parent));
  ACE_ASSERT (this->supplier_admin_.get() != 0);

  this->filter_admin_.event_channel (this->supplier_admin_->event_channel());

  const CosNotification::QoSProperties &default_ps_qos =
    TAO_Notify_PROPERTIES::instance ()->default_proxy_consumer_qos_properties ();

  {
    ACE_GUARD_THROW_EX (TAO_SYNCH_MUTEX, ace_mon, this->lock_,
                         CORBA::INTERNAL ());
    this->TAO_Notify_Object::set_qos (default_ps_qos);
  }
}

bool TAO_Notify_ProxyConsumer::is_connected ( void ) const

Return true if connected.

Definition at line 8 of file ProxyConsumer.inl.

{
  return (this->supplier_.get() != 0);
}

ACE_Time_Value TAO_Notify_ProxyConsumer::last_ping ( ) const

Definition at line 192 of file ProxyConsumer.cpp.

{
  return this->last_ping_.value ();
}

void TAO_Notify_ProxyConsumer::last_ping ( const ACE_Time_Value & tv )

Definition at line 199 of file ProxyConsumer.cpp.

{
  this->last_ping_ = tv;
}

TAO_Notify_Peer * TAO_Notify_ProxyConsumer::peer ( void ) [private, virtual]

Access our Peer.

Implements TAO_Notify_Proxy.

Definition at line 42 of file ProxyConsumer.cpp.

{
  return this->supplier ();
}

void TAO_Notify_ProxyConsumer::push_i ( TAO_Notify_Event * event ) [protected]

Accept an event from the Supplier.

Definition at line 114 of file ProxyConsumer.cpp.

{
  last_ping_ = ACE_OS::gettimeofday ();

  if (this->supports_reliable_events ())
    {
      TAO_Notify_Event::Ptr pevent(event->queueable_copy());
      TAO_Notify::Routing_Slip_Ptr routing_slip =
        TAO_Notify::Routing_Slip::create (pevent);
      if (DEBUG_LEVEL > 0)
        ACE_DEBUG((LM_DEBUG, ACE_TEXT ("ProxyConsumer routing event.\n")));
      routing_slip->route (this, true);
      routing_slip->wait_persist ();
    }
  else
    {
      TAO_Notify_Method_Request_Lookup_No_Copy request (event, this);
      this->execute_task (request);
    }
}

int TAO_Notify_ProxyConsumer::shutdown ( void ) [virtual]

Shutdown (TAO_Notify_Container_T method).

Definition at line 165 of file ProxyConsumer.cpp.

{
  if (this->TAO_Notify_Object::shutdown () == 1)
    return 1;


  this->disconnect ();

  if (this->supplier_.get() != 0)
  {
    this->supplier_->shutdown ();
  }
  return 0;
}

TAO_Notify_Supplier * TAO_Notify_ProxyConsumer::supplier ( void ) [protected]

Access the Supplier.

Definition at line 14 of file ProxyConsumer.inl.

{
  return this->supplier_.get();
}

TAO_Notify_SupplierAdmin & TAO_Notify_ProxyConsumer::supplier_admin ( void )

The SA parent.

Definition at line 20 of file ProxyConsumer.inl.

{
  ACE_ASSERT( this->supplier_admin_.get() != 0 );
  return *this->supplier_admin_;
}

bool TAO_Notify_ProxyConsumer::supports_reliable_events ( ) const [private]

Is this part of a reliable channel.

Definition at line 136 of file ProxyConsumer.cpp.

{
  bool reliable = false;
  CosNotification::PropertyValue value;
  if (this->find_qos_property_value (CosNotification::EventReliability, value))
    {
      CORBA::Short setting;
      if (value >>= setting)
        {
          reliable = (setting == CosNotification::Persistent);
        }
    }
  return reliable;
}