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// $Id$
//
// ============================================================================
//
//
// = FILENAME
// PushConsumer.java
//
// = AUTHOR
// Michael Kircher (mk1@cs.wustl.edu)
//
// = DESCRIPTION
// This is a Push Consumer which takes the data field of the
// event and updates with it a Data Handler.
//
//
// ============================================================================
public class PushConsumer extends RtecEventComm._PushConsumerImplBase
{
public static final int ACE_ES_EVENT_ANY = 0;
public static final int ACE_ES_EVENT_SHUTDOWN = 1;
public static final int ACE_ES_EVENT_ACT = 2;
public static final int ACE_ES_EVENT_NOTIFICATION = 3;
public static final int ACE_ES_EVENT_TIMEOUT = 4;
public static final int ACE_ES_EVENT_INTERVAL_TIMEOUT = 5;
public static final int ACE_ES_EVENT_DEADLINE_TIMEOUT = 6;
public static final int ACE_ES_GLOBAL_DESIGNATOR = 7;
public static final int ACE_ES_CONJUNCTION_DESIGNATOR = 8;
public static final int ACE_ES_DISJUNCTION_DESIGNATOR = 9;
public static final int ACE_ES_EVENT_UNDEFINED = 16;
public static final int TOTAL_MESSAGES = 30;
// Store the number of received events
private int total_received_ = 0;
private org.omg.CORBA.ORB orb_;
private DataHandler dataHandler_;
private int rt_info_;
private RtecEventChannelAdmin.EventChannel channel_admin_;
private RtecEventChannelAdmin.ConsumerAdmin consumer_admin_;
private RtecEventChannelAdmin.ProxyPushSupplier suppliers_;
public PushConsumer (org.omg.CORBA.ORB orb, DataHandler dataHandler)
{
orb_ = orb;
dataHandler_ = dataHandler;
}
public void push (RtecEventComm.Event[] events)
{
if (total_received_ < 5)
System.out.println ("Demo Consumer: Received an event! ->Number: " + total_received_);
else if (total_received_ == 5)
System.out.println ("Demo Consumer: Everything is fine. Going to be mute.");
if (events.length == 0)
{
System.err.println ("No events");
}
else
{
total_received_++;
for (int i = 0; i < events.length; ++i)
{
if(events[i].type_ == ACE_ES_EVENT_NOTIFICATION)
{
try
{
dataHandler_.update (events[i].data_.any_value);
}
catch(org.omg.CORBA.SystemException e)
{
System.err.println(e);
}
}
}
}
}
public void disconnect_push_consumer()
{
System.out.println ("Demo Consumer: Have to disconnect!");
}
public void open_consumer (RtecEventChannelAdmin.EventChannel event_channel,
RtecScheduler.Scheduler scheduler,
String name)
{
try
{
// Define Real-time information
rt_info_ = scheduler.create (name);
scheduler.set (rt_info_,
RtecScheduler.Criticality.VERY_LOW_CRITICALITY,
new TimeBase.ulonglong (0,0),
new TimeBase.ulonglong (0,0),
new TimeBase.ulonglong (0,0),
2500000, // period
RtecScheduler.Importance.VERY_LOW_IMPORTANCE,
new TimeBase.ulonglong (0,0),
1,
RtecScheduler.Info_Type.OPERATION);
// Register for Notification and Shutdown events
RtecEventComm.Event notification_event =
new RtecEventComm.Event (ACE_ES_EVENT_NOTIFICATION, 0,
1, // ttl
new TimeBase.ulonglong (0,0),
new TimeBase.ulonglong (0,0),
new TimeBase.ulonglong (0,0),
new RtecEventComm.EventData (orb_.create_any ()));
RtecEventChannelAdmin.Dependency dependencies[] = new RtecEventChannelAdmin.Dependency[1];
dependencies[0] = new RtecEventChannelAdmin.Dependency (notification_event, rt_info_);
RtecEventChannelAdmin.ConsumerQOS qos = new RtecEventChannelAdmin.ConsumerQOS (dependencies,
false);
// The channel administrator is the event channel we got from the invocation
// of this routine
channel_admin_ = event_channel;
// Connect as a consumer
consumer_admin_ = channel_admin_.for_consumers ();
// Obtain a reference to the proxy push supplier
suppliers_ = consumer_admin_.obtain_push_supplier ();
suppliers_.connect_push_consumer (this, qos);
System.out.println ("Registered the consumer successfully.");
}
catch (RtecEventChannelAdmin.TypeError e)
{
System.err.println ("Demo_Consumer.open_consumer: Type error");
System.err.println (e);
}
catch (RtecEventChannelAdmin.AlreadyConnected e)
{
System.err.println ("Demo_Consumer.open_consumer: Already connected");
System.err.println (e);
}
catch (RtecScheduler.UNKNOWN_TASK e)
{
System.err.println ("Demo_Consumer.open_consumer: Unknown task");
System.err.println (e);
}
catch (RtecScheduler.DUPLICATE_NAME e)
{
System.err.println ("Demo_Consumer.open_consumer: Duplicate names");
System.err.println (e);
}
catch(org.omg.CORBA.SystemException e)
{
System.err.println(e);
}
}
}
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