Package org.jacorb.notification.servant

Source Code of org.jacorb.notification.servant.StructuredProxyPushSupplierImpl$PushStructuredOperation

package org.jacorb.notification.servant;

/*
*        JacORB - a free Java ORB
*
*   Copyright (C) 1999-2004 Gerald Brose
*
*   This library is free software; you can redistribute it and/or
*   modify it under the terms of the GNU Library General Public
*   License as published by the Free Software Foundation; either
*   version 2 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
*   Library General Public License for more details.
*
*   You should have received a copy of the GNU Library General Public
*   License along with this library; if not, write to the Free
*   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/

import org.jacorb.config.*;
import org.jacorb.notification.OfferManager;
import org.jacorb.notification.SubscriptionManager;
import org.jacorb.notification.engine.MessagePushOperation;
import org.jacorb.notification.engine.PushTaskExecutorFactory;
import org.jacorb.notification.engine.TaskProcessor;
import org.jacorb.notification.interfaces.Message;
import org.omg.CORBA.ORB;
import org.omg.CosEventChannelAdmin.AlreadyConnected;
import org.omg.CosEventComm.Disconnected;
import org.omg.CosNotifyChannelAdmin.ConsumerAdmin;
import org.omg.CosNotifyChannelAdmin.ProxyType;
import org.omg.CosNotifyChannelAdmin.StructuredProxyPushSupplierOperations;
import org.omg.CosNotifyChannelAdmin.StructuredProxyPushSupplierPOATie;
import org.omg.CosNotifyComm.StructuredPushConsumer;
import org.omg.CosNotifyComm.StructuredPushConsumerOperations;
import org.omg.PortableServer.POA;
import org.omg.PortableServer.Servant;

/**
* @jmx.mbean extends = "AbstractProxyPushSupplierMBean"
* @jboss.xmbean
*
* @author Alphonse Bendt
* @version $Id: StructuredProxyPushSupplierImpl.java,v 1.25 2009-04-25 10:08:52 andre.spiegel Exp $
*/

public class StructuredProxyPushSupplierImpl extends AbstractProxyPushSupplier implements
        StructuredProxyPushSupplierOperations, StructuredProxyPushSupplierImplMBean
{
    private class PushStructuredOperation extends MessagePushOperation
    {   
        public PushStructuredOperation(Message message) {
            super(message);
        }

        public void invokePush() throws Disconnected {
            deliverMessageInternal(message_);
        }
    }
   
    private StructuredPushConsumerOperations pushConsumer_;

    private long timeSpent_;
   
    // //////////////////////////////////////

    public StructuredProxyPushSupplierImpl(IAdmin admin, ORB orb, POA poa, Configuration conf,
            TaskProcessor taskProcessor, PushTaskExecutorFactory pushTaskExecutorFactory, OfferManager offerManager,
            SubscriptionManager subscriptionManager, ConsumerAdmin consumerAdmin)
            throws ConfigurationException
    {
        super(admin, orb, poa, conf, taskProcessor, pushTaskExecutorFactory, offerManager,
                subscriptionManager, consumerAdmin);       
    }

    public ProxyType MyType()
    {
        return ProxyType.PUSH_STRUCTURED;
    }

    public boolean pushEvent()
    {
        final Message _message = getMessageNoBlock();

        if (_message != null)
        {
            try
            {
                return deliverMessageWithRetry(_message);
            } finally
            {
                _message.dispose();
            }
        }

        return false;
    }

    private boolean deliverMessageWithRetry(final Message message)
    {
        try
        {
            deliverMessageInternal(message);
           
            return true;
        } catch (Exception e)
        {
            final PushStructuredOperation _failedOperation = new PushStructuredOperation(message);

            handleFailedPushOperation(_failedOperation, e);
           
            return false;
        }
    }

    private void deliverMessageInternal(final Message message) throws Disconnected
    {
        final long now = System.currentTimeMillis();
        pushConsumer_.push_structured_event(message.toStructuredEvent());
        final long _duration = (System.currentTimeMillis() - now);
        timeSpent_ += _duration;
        resetErrorCounter();
       
        if (logger_.isDebugEnabled())
        {
            logger_.debug("Push took " + _duration + " ms");
        }
    }

    public void connect_structured_push_consumer(StructuredPushConsumer consumer)
            throws AlreadyConnected
    {
        checkIsNotConnected();

        if (logger_.isDebugEnabled())
        {
            logger_.debug("connect structured_push_consumer");
        }

        pushConsumer_ = consumer;

        connectClient(consumer);
    }

    public void disconnect_structured_push_supplier()
    {
        destroy();
    }

    protected void connectionResumed()
    {
        scheduleFlush();
    }

    protected void disconnectClient()
    {
        pushConsumer_.disconnect_structured_push_consumer();

        pushConsumer_ = null;
    }

    public Servant newServant()
    {
        return new StructuredProxyPushSupplierPOATie(this);
    }

    protected long getCost()
    {
        return timeSpent_;
    }
}
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