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/**
* @file ECG_UDP_Sender.cpp
*
* $Id$
*
* @author Carlos O'Ryan <coryan@uci.edu>
*
* http://doc.ece.uci.edu/~coryan/EC/index.html
*
*/
#include "orbsvcs/Event/ECG_UDP_Sender.h"
#include "orbsvcs/Event_Utilities.h"
#include "tao/CDR.h"
#if !defined(__ACE_INLINE__)
#include "orbsvcs/Event/ECG_UDP_Sender.inl"
#endif /* __ACE_INLINE__ */
ACE_RCSID (Event,
ECG_UDP_Sender,
"$Id$")
// ****************************************************************
TAO_BEGIN_VERSIONED_NAMESPACE_DECL
TAO_ECG_UDP_Sender::~TAO_ECG_UDP_Sender (void)
{
}
void
TAO_ECG_UDP_Sender::init (RtecEventChannelAdmin::EventChannel_ptr lcl_ec,
RtecUDPAdmin::AddrServer_ptr addr_server,
TAO_ECG_Refcounted_Endpoint endpoint_rptr)
{
if (CORBA::is_nil (lcl_ec))
{
ACE_ERROR ((LM_ERROR, "TAO_ECG_UDP_Sender::init(): "
"<lcl_ec> argument is nil."));
throw CORBA::INTERNAL ();
}
if (CORBA::is_nil (addr_server))
{
ACE_ERROR ((LM_ERROR, "TAO_ECG_UDP_Sender::init(): "
"address server argument is nil."));
throw CORBA::INTERNAL ();
}
this->cdr_sender_.init (endpoint_rptr);
this->lcl_ec_ =
RtecEventChannelAdmin::EventChannel::_duplicate (lcl_ec);
this->addr_server_ =
RtecUDPAdmin::AddrServer::_duplicate (addr_server);
}
void
TAO_ECG_UDP_Sender::connect (const RtecEventChannelAdmin::ConsumerQOS& sub)
{
if (CORBA::is_nil (this->lcl_ec_.in ()))
{
ACE_ERROR ((LM_ERROR, "Error initializing TAO_ECG_UDP_Sender: "
"init() has not been called before connect()."));
throw CORBA::INTERNAL ();
}
if (sub.dependencies.length () == 0)
{
ACE_ERROR ((LM_ERROR, "TAO_ECG_UDP_Sender::connect(): "
"0-length subscriptions argument."));
throw CORBA::INTERNAL ();
}
if (CORBA::is_nil (this->supplier_proxy_.in ()))
{
this->new_connect (sub);
}
else
{
this->reconnect (sub);
}
}
void
TAO_ECG_UDP_Sender::new_connect (const RtecEventChannelAdmin::ConsumerQOS& sub)
{
// Activate with poa.
RtecEventComm::PushConsumer_var consumer_ref;
PortableServer::POA_var poa = this->_default_POA ();
TAO_EC_Object_Deactivator deactivator;
activate (consumer_ref,
poa.in (),
this,
deactivator);
// Connect as a consumer to the local EC.
RtecEventChannelAdmin::ConsumerAdmin_var consumer_admin =
this->lcl_ec_->for_consumers ();
RtecEventChannelAdmin::ProxyPushSupplier_var proxy =
consumer_admin->obtain_push_supplier ();
ECG_Sender_Auto_Proxy_Disconnect new_proxy_disconnect (proxy.in ());
proxy->connect_push_consumer (consumer_ref.in (),
sub);
// Update resource managers.
this->supplier_proxy_ = proxy._retn ();
this->auto_proxy_disconnect_.set_command (new_proxy_disconnect);
this->set_deactivator (deactivator);
}
void
TAO_ECG_UDP_Sender::reconnect (const RtecEventChannelAdmin::ConsumerQOS& sub)
{
// Obtain our object reference from the POA.
RtecEventComm::PushConsumer_var consumer_ref;
PortableServer::POA_var poa = this->_default_POA ();
CORBA::Object_var obj = poa->servant_to_reference (this);
consumer_ref =
RtecEventComm::PushConsumer::_narrow (obj.in ());
if (CORBA::is_nil (consumer_ref.in ()))
{
throw CORBA::INTERNAL ();
}
// Reconnect.
this->supplier_proxy_->connect_push_consumer (consumer_ref.in (),
sub);
}
void
TAO_ECG_UDP_Sender::disconnect_push_consumer (void)
{
// Prevent attempts to disconnect.
this->auto_proxy_disconnect_.disallow_command ();
this->shutdown ();
}
void
TAO_ECG_UDP_Sender::shutdown (void)
{
this->supplier_proxy_ =
RtecEventChannelAdmin::ProxyPushSupplier::_nil ();
this->auto_proxy_disconnect_.execute ();
this->addr_server_ = RtecUDPAdmin::AddrServer::_nil ();
this->lcl_ec_ = RtecEventChannelAdmin::EventChannel::_nil ();
this->deactivator_.deactivate ();
this->cdr_sender_.shutdown ();
}
void
TAO_ECG_UDP_Sender::push (const RtecEventComm::EventSet &events)
{
if (events.length () == 0)
{
// ACE_DEBUG ((EC_FORMAT (DEBUG,
// "Nothing to multicast: "
// "0-length EventSet.")));
return;
}
// Send each event in a separate message.
// @@ TODO It is interesting to group events destined to the
// same mcast group in a single message.
for (u_int i = 0; i < events.length (); ++i)
{
// To avoid loops we keep a TTL field on the events and skip the
// events with TTL <= 0
if (events[i].header.ttl <= 0)
continue;
const RtecEventComm::Event& e = events[i];
// We need to modify the TTL field, but copying the entire event
// would be wasteful; instead we create a new header and only
// modify the header portion.
RtecEventComm::EventHeader header = e.header;
header.ttl--;
// Start building the message
TAO_OutputCDR cdr;
// Marshal as if it was a sequence of one element, notice how we
// marshal a modified version of the header, but the payload is
// marshal without any extra copies.
cdr.write_ulong (1);
if (!(cdr << header)
|| !(cdr << e.data))
throw CORBA::MARSHAL ();
ACE_INET_Addr inet_addr;
try
{
// Grab the right mcast group for this event...
RtecUDPAdmin::UDP_Address_var udp_addr;
this->addr_server_->get_address (header, udp_addr.out());
switch (udp_addr->_d())
{
case RtecUDPAdmin::INET:
inet_addr.set(udp_addr->v4_addr().port,
udp_addr->v4_addr().ipaddr);
break;
case RtecUDPAdmin::INET6:
#if defined (ACE_HAS_IPV6)
inet_addr.set_type(PF_INET6);
#endif
inet_addr.set_address(udp_addr->v6_addr().ipaddr,16,0);
inet_addr.set_port_number(udp_addr->v6_addr().port);
break;
}
}
catch (const ::CORBA::BAD_OPERATION &)
{
// server only supports IPv4
// Grab the right mcast group for this event...
RtecUDPAdmin::UDP_Addr udp_addr;
this->addr_server_->get_addr (header, udp_addr);
inet_addr.set (udp_addr.port, udp_addr.ipaddr);
}
this->cdr_sender_.send_message (cdr, inet_addr);
}
}
TAO_END_VERSIONED_NAMESPACE_DECL
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