ALMA Computing Group

MountConsumer.java

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/*
 *    ALMA - Atacama Large Millimiter Array
 *   (c) Associated Universities Inc., 2002 
 *    (c) European Southern Observatory, 2002
 *    Copyright by ESO (in the framework of the ALMA collaboration),
 *    All rights reserved
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License as published by the Free Software Foundation; either
 *    version 2.1 of the License, or (at your option) any later version.
 *
 *    This library is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *    Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public
 *    License along with this library; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, 
 *    MA 02111-1307  USA
 *
 * MountConsumer.java
 *
 * Created on March 12, 2003, 2:33 PM
 */
package alma.ACSCOURSE_MOUNT;
import alma.acs.nc.Consumer;
import alma.acs.container.ContainerServices;
import alma.acs.component.client.ComponentClient;

public class MountConsumer extends Consumer
{
    public MountConsumer(ContainerServices cServices)
        throws alma.acs.exceptions.AcsJException
    {
        super(MOUNT_CHANNEL.value, cServices);
        
        //Subscribe to an event type and provide a reference to a class capable
        //of processing the event (see receive method).
        addSubscription(MountEventData.class, this);
    }    

    public void receive(MountEventData joe)
        {
            System.out.println("The commanded Az/El received by this consumer are:" + 
                               joe.Azimuth + 
                               "," + 
                               joe.Elevation);
        }

    public static void main(String[] args)
        {
        try
            {
            //Setup an ACS Java client. This has little to do with the NC API
            String managerLoc = System.getProperty("ACS.manager");
            if (managerLoc == null)
                {
                System.out.println("Java property 'ACS.manager' must be set to the corbaloc of the ACS manager!");
                System.exit(-1);
                }
            String clientName = "MountConsumerClient";
            ComponentClient myClient = new ComponentClient(null, managerLoc, clientName);
            
            //Create the consumer using the ACS Java client's container services.
            MountConsumer joe = new MountConsumer(myClient.getContainerServices());
            
            //After consumerReady() is invoked, processEvent(...) is invoked
            //by the channel.  That is, we have no control over when
            //that method is called.
            joe.consumerReady();
            System.out.println("Waiting for events...");

            //Wait a while for some events
            Thread.sleep(50000);

            //Disconnect from the channel
            joe.disconnect();

            //Must cleanly disconnect the client
            myClient.tearDown();
        }
        catch(Exception e)
        {
            e.printStackTrace(System.err);
        }
        System.out.println("Done...");
    }
}