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#include "RTEvent_Consumer.h"
#include "orbsvcs/RtecEventChannelAdminC.h"
#include "orbsvcs/Event_Service_Constants.h"
#include "ace/OS_main.h"
ACE_RCSID (RTEvent,
RTEvent_Consumer,
"$Id$")
#define NAMING_SERVICE_NAME "NameService"
#define EVENT_TLS_LOG_FACTORY_NAME "RTEventLogFactory"
int
ACE_TMAIN (int argc, ACE_TCHAR *argv[])
{
Consumer consumer;
return consumer.run (argc, argv);
}
// ****************************************************************
Consumer::Consumer (void)
: event_count_ (0)
{
}
int
Consumer::run (int argc, char* argv[])
{
try
{
// ORB initialization boiler plate...
CORBA::ORB_var orb =
CORBA::ORB_init (argc, argv, "");
// Do *NOT* make a copy because we don't want the ORB to outlive
// the run() method.
this->orb_ = orb.in ();
/*
if (argc <= 1)
{
ACE_ERROR ((LM_ERROR,
"Usage: Consumer <event_channel_ior>\n"));
return 1;
}
*/
CORBA::Object_var object =
orb->resolve_initial_references ("RootPOA");
PortableServer::POA_var poa =
PortableServer::POA::_narrow (object.in ());
PortableServer::POAManager_var poa_manager =
poa->the_POAManager ();
poa_manager->activate ();
// Obtain the event channel, we could use a naming service, a
// command line argument or resolve_initial_references(), but
// this is simpler...
/* object =
orb->string_to_object (argv[1]);
RtecEventChannelAdmin::EventChannel_var event_channel =
RtecEventChannelAdmin::EventChannel::_narrow (object.in ());
*/
// Obtain the event channel
CORBA::Object_var naming_obj =
this->orb_->resolve_initial_references (NAMING_SERVICE_NAME);
// Need to check return value for errors.
if (CORBA::is_nil (naming_obj.in ()))
ACE_THROW_RETURN (CORBA::UNKNOWN (), 0);
this->naming_context_ =
CosNaming::NamingContext::_narrow (naming_obj.in ());
CosNaming::Name name (1);
name.length (1);
name[0].id = CORBA::string_dup (EVENT_TLS_LOG_FACTORY_NAME);
CORBA::Object_var obj =
this->naming_context_->resolve (name);
this->event_log_factory_ =
RTEventLogAdmin::EventLogFactory::_narrow (obj.in ());
// The canonical protocol to connect to the EC
this->supplier_ =
this->event_log_factory_->obtain_push_supplier ();
RtecEventComm::PushConsumer_var consumer =
this->_this ();
// Simple subscription, but usually the helper classes in
// $TAO_ROOT/orbsvcs/Event_Utils.h are a better way to do this.
RtecEventChannelAdmin::ConsumerQOS qos;
qos.dependencies.length (2);
RtecEventComm::EventHeader& h0 =
qos.dependencies[0].event.header;
h0.type = ACE_ES_DISJUNCTION_DESIGNATOR;
h0.source = ACE_ES_EVENT_SOURCE_ANY;
RtecEventComm::EventHeader& h1 =
qos.dependencies[1].event.header;
h1.type = ACE_ES_EVENT_UNDEFINED; // first free event type
h1.source = ACE_ES_EVENT_SOURCE_ANY;
this->supplier_->connect_push_consumer (consumer.in (), qos);
// Wait for events, using work_pending()/perform_work() may help
// or using another thread, this example is too simple for that.
orb->run ();
// We don't do any cleanup, it is hard to do it after shutdown,
// and would complicate the example; plus it is almost
// impossible to do cleanup after ORB->run() because the POA is
// in the holding state. Applications should use
// work_pending()/perform_work() to do more interesting stuff.
// Check the supplier for the proper way to do cleanup.
}
catch (const CORBA::Exception& ex)
{
ex._tao_print_exception ("Consumer::run");
return 1;
}
return 0;
}
void
Consumer::push (const RtecEventComm::EventSet& events)
ACE_THROW_SPEC ((CORBA::SystemException))
{
ACE_UNUSED_ARG (events);
this->event_count_ ++;
ACE_DEBUG ((LM_DEBUG,
"Consumer (%P|%t): %d log generated events received\n",
this->event_count_));
}
void
Consumer::disconnect_push_consumer (void)
ACE_THROW_SPEC ((CORBA::SystemException))
{
// In this example we shutdown the ORB when we disconnect from the
// EC (or rather the EC disconnects from us), but this doesn't have
// to be the case....
this->orb_->shutdown (0);
}
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