package org.jacorb.test.notification;

import org.omg.CORBA.Any;
import org.omg.CORBA.BooleanHolder;
import org.omg.CORBA.ORB;
import org.omg.CosEventChannelAdmin.AlreadyConnected;
import org.omg.CosEventChannelAdmin.ConsumerAdmin;
import org.omg.CosEventChannelAdmin.EventChannel;
import org.omg.CosEventChannelAdmin.EventChannelHelper;
import org.omg.CosEventChannelAdmin.ProxyPullSupplier;
import org.omg.CosEventComm.Disconnected;
import org.omg.CosEventComm.PullConsumerPOA;

/**
 * @author Alphonse Bendt
 */

public class CosEventPullReceiver extends PullConsumerPOA implements Runnable, TestClientOperations
{
    ProxyPullSupplier mySupplier_;

    Any event_ = null;

    long timeout_ = 1000;

    boolean error_ = false;

    boolean connected_;

    ORB orb_;

    public CosEventPullReceiver(ORB orb)
    {
        orb_ = orb;
    }

    public void disconnect_pull_consumer()
    {
        connected_ = false;
    }

    public boolean isError()
    {
        return error_;
    }

    public boolean isConnected()
    {
        return connected_;
    }

    public boolean isEventHandled()
    {
        return (event_ != null);
    }

    public void run()
    {
        long _startTime = System.currentTimeMillis();
        long _stopTime = _startTime + timeout_;

        BooleanHolder _success = new BooleanHolder();

        try
        {
            while (connected_ && System.currentTimeMillis() < _stopTime)
            {
                event_ = mySupplier_.try_pull(_success);
                if (_success.value)
                {
                    break;
                }
                Thread.yield();
            }
        } catch (Disconnected d)
        {
            d.printStackTrace();
            error_ = true;
        }
    }

    public void connect(org.omg.CosNotifyChannelAdmin.EventChannel channel, boolean useOrSemantic)
            throws AlreadyConnected
    {

        EventChannel _channel = EventChannelHelper.narrow(channel);
        ConsumerAdmin _admin = _channel.for_consumers();
        mySupplier_ = _admin.obtain_pull_supplier();
        mySupplier_.connect_pull_consumer(_this(orb_));
        connected_ = true;
    }

    public void shutdown()
    {
        mySupplier_.disconnect_pull_supplier();
    }
}