TAO_FlowProducer Class Reference

#include <AVStreams_i.h>

Inheritance diagram for TAO_FlowProducer:

[legend]Collaboration diagram for TAO_FlowProducer:

[legend]List of all members.

Public Member Functions
	TAO_FlowProducer (void)
	default constructor
	TAO_FlowProducer (const char *flowname, AVStreams::protocolSpec protocols, const char *format)
virtual char *	get_rev_channel (const char *pcol_name)
virtual void	stop (void)
	stop this flow, to be overridden by the application.
virtual void	start (void)
	start this flow, to be overridden by the application.
virtual char *	go_to_listen (AVStreams::QoS &the_qos, CORBA::Boolean is_mcast, AVStreams::FlowEndPoint_ptr peer, char *&flowProtocol)
virtual CORBA::Boolean	connect_to_peer (AVStreams::QoS &the_qos, const char *address, const char *use_flow_protocol)
virtual char *	connect_mcast (AVStreams::QoS &the_qos, CORBA::Boolean_out is_met, const char *address, const char *use_flow_protocol)
	connect to the multicast address, not implemented.
virtual void	set_key (const AVStreams::key &the_key)
	sets the public key to be used for encryption of the data.
virtual void	set_source_id (CORBA::Long source_id)
Protected Attributes
CORBA::Long	source_id_
	source id of this producer.
CORBA::String_var	peer_address_

---

Detailed Description

Definition at line 1028 of file AVStreams_i.h.

---

Constructor & Destructor Documentation

TAO_FlowProducer::TAO_FlowProducer

(

void

)

default constructor

Definition at line 4274 of file AVStreams_i.cpp.

{
}

TAO_FlowProducer::TAO_FlowProducer	(	const char *	flowname,
		AVStreams::protocolSpec	protocols,
		const char *	format
	)

Definition at line 4278 of file AVStreams_i.cpp.

References TAO_FlowEndPoint::open().

{
  this->open (flowname, protocols, format);
}

---

Member Function Documentation

char * TAO_FlowProducer::connect_mcast	(	AVStreams::QoS &	the_qos,
		CORBA::Boolean_out	is_met,
		const char *	address,
		const char *	use_flow_protocol
	)			[virtual]

connect to the multicast address, not implemented.

Definition at line 4349 of file AVStreams_i.cpp.

References ACE_DEBUG, ACE_ERROR_RETURN, ACE_NEW_RETURN, TAO_AV_Flow_Handler::event_handler(), TAO_FlowEndPoint::flow_spec_set_, TAO_FlowEndPoint::format_, TAO_FlowSpec_Entry::handler(), ACE_Unbounded_Set_Ex< T, C >::insert(), ACE_Singleton< TYPE, ACE_LOCK >::instance(), LM_DEBUG, LM_ERROR, TAO_AV_Acceptor_Registry::open(), TAO_FlowEndPoint::protocols_, ACE_Event_Handler::reactor(), ACE_Event_Handler::READ_MASK, CORBA::string_dup(), and TAO_debug_level.

{
  // The address variable gives the multicast address to subscribe to.
  for (u_int i=0;i<this->protocols_.length ();i++)
    {
      // choose the protocol which supports multicast.
    }

  if (address == 0)
    if (TAO_debug_level > 0)
      ACE_DEBUG ((LM_DEBUG, "TAO_FlowProducer::connect_mcast address is 0\n"));
  TAO_Forward_FlowSpec_Entry  *entry;
  ACE_NEW_RETURN (entry,
                  TAO_Forward_FlowSpec_Entry(this->flowname_.in (),
                                             "IN",
                                             this->format_.in (),
                                             use_flow_protocol,
                                             address),
                  0);

  this->flow_spec_set_.insert (entry);
  TAO_AV_Acceptor_Registry *acceptor_registry =
    TAO_AV_CORE::instance ()->acceptor_registry ();
  int result = acceptor_registry->open (this,
                                        TAO_AV_CORE::instance (),
                                        this->flow_spec_set_);
  if (result < 0)
    ACE_ERROR_RETURN ((LM_ERROR, "TAO_FlowProducer::connect_mcast:acceptor_registry open failed\n"), 0);
  // Now remove our handler from the reactor since we're a producer and dont want to get called for
  // multicast packets.
  ACE_Event_Handler *event_handler = entry->handler ()->event_handler ();
  event_handler->reactor ()->remove_handler (event_handler,
                                             ACE_Event_Handler::READ_MASK);
  return CORBA::string_dup (address);
}

CORBA::Boolean TAO_FlowProducer::connect_to_peer	(	AVStreams::QoS &	the_qos,
		const char *	address,
		const char *	use_flow_protocol
	)			[virtual]

This should be implemented in both the FlowProducer and consumer and hence is pure virtual since we need to know the role of the flowendpoint to create appropriate protocol objects. eg. in SFP to create Producer Object/ Consumer Object.

Implements TAO_FlowEndPoint.

Definition at line 4338 of file AVStreams_i.cpp.

References TAO_FlowEndPoint::connect_to_peer_i(), and TAO_FlowSpec_Entry::TAO_AV_PRODUCER.

{
  return this->connect_to_peer_i (TAO_FlowSpec_Entry::TAO_AV_PRODUCER,
                                  the_qos,
                                  address,
                                  use_flow_protocol);
}

char * TAO_FlowProducer::get_rev_channel

(

const char *

pcol_name

)

[virtual]

get the reverse channel, to be used for feedback for protocols like UDP. @Naga: In the spec this is defined in the TAO_FlowProducer but it seems more reasonable for this to be in a FlowEndPoint since any of the flowendpoints can be made to listen. So in the case of UDP if the producer is listening and the consumer connects (logically) then the producer needs to know the reverse channel on its peer fep to send data to.

Definition at line 4287 of file AVStreams_i.cpp.

{
  return 0;
}

char * TAO_FlowProducer::go_to_listen	(	AVStreams::QoS &	the_qos,
		CORBA::Boolean	is_mcast,
		AVStreams::FlowEndPoint_ptr	peer,
		char *&	flowProtocol
	)			[virtual]

This should be implemented in both the FlowProducer and consumer and hence is pure virtual since we need to know the role of the flowendpoint to create appropriate protocol objects. eg. in SFP to create Producer Object/ Consumer Object.

Implements TAO_FlowEndPoint.

Definition at line 4325 of file AVStreams_i.cpp.

References TAO_FlowEndPoint::go_to_listen_i(), and TAO_FlowSpec_Entry::TAO_AV_PRODUCER.

{
  return this->go_to_listen_i (TAO_FlowSpec_Entry::TAO_AV_PRODUCER,
                               the_qos,
                               is_mcast,
                               peer_fep,
                               flowProtocol);
}

void TAO_FlowProducer::set_key

(

const AVStreams::key &

the_key

)

[virtual]

sets the public key to be used for encryption of the data.

Definition at line 4390 of file AVStreams_i.cpp.

References CORBA::Exception::_tao_print_exception().

{
  try
    {
      CORBA::Any anyval;
      anyval <<= the_key;
      this->define_property ("PublicKey",
                             anyval);
    }
  catch (const CORBA::Exception& ex)
    {
      ex._tao_print_exception ("TAO_FlowProducer::set_key");
    }
}

void TAO_FlowProducer::set_source_id

(

CORBA::Long

source_id

)

[virtual]

sets the source id of this flow producer so that it can be used to distinguish this producer from others in the multicast case.

Definition at line 4407 of file AVStreams_i.cpp.

References source_id_.

{
  this->source_id_ = source_id;
}

void TAO_FlowProducer::start

(

void

)

[virtual]

start this flow, to be overridden by the application.

Definition at line 4306 of file AVStreams_i.cpp.

References ACE_Unbounded_Set_Ex< T, C >::end(), TAO_FlowEndPoint::flow_spec_set_, and TAO_FlowSpec_Entry::TAO_AV_PRODUCER.

{
  TAO_AV_FlowSpecSetItor end = this->flow_spec_set_.end ();
  for (TAO_AV_FlowSpecSetItor begin = this->flow_spec_set_.begin ();
       begin != end; ++begin)
    {
      TAO_FlowSpec_Entry *entry = (*begin);
      if (entry->handler () != 0)
        {
          entry->handler ()->start (TAO_FlowSpec_Entry::TAO_AV_PRODUCER);
        }
      if (entry->control_handler () != 0)
        {
          entry->control_handler ()->start (TAO_FlowSpec_Entry::TAO_AV_PRODUCER);
        }
    }
}

void TAO_FlowProducer::stop

(

void

)

[virtual]

stop this flow, to be overridden by the application.

Definition at line 4294 of file AVStreams_i.cpp.

References ACE_Unbounded_Set_Ex< T, C >::end(), TAO_FlowEndPoint::flow_spec_set_, and TAO_FlowSpec_Entry::TAO_AV_PRODUCER.

{
  TAO_AV_FlowSpecSetItor end = this->flow_spec_set_.end ();
  for (TAO_AV_FlowSpecSetItor begin = this->flow_spec_set_.begin ();
       begin != end; ++begin)
    {
      TAO_FlowSpec_Entry *entry = (*begin);
      entry->handler ()->stop (TAO_FlowSpec_Entry::TAO_AV_PRODUCER);
    }
}

---

Member Data Documentation

CORBA::String_var TAO_FlowProducer::peer_address_ [protected]

Definition at line 1082 of file AVStreams_i.h.

CORBA::Long TAO_FlowProducer::source_id_ [protected]

source id of this producer.

Definition at line 1081 of file AVStreams_i.h.

Referenced by set_source_id().

---

The documentation for this class was generated from the following files:

• AVStreams_i.h
• AVStreams_i.cpp

---