org/objectweb/proactive/ext/locationserver/MigrationManagerWithLocationServer.java

/* 
 * ################################################################
 * 
 * ProActive: The Java(TM) library for Parallel, Distributed, 
 *            Concurrent computing with Security and Mobility
 * 
 * Copyright (C) 1997-2007 INRIA/University of Nice-Sophia Antipolis
 * Contact: proactive@objectweb.org
 * 
 * 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 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
 *  
 *  Initial developer(s):               The ProActive Team
 *                        http://www.inria.fr/oasis/ProActive/contacts.html
 *  Contributor(s): 
 * 
 * ################################################################
 */ 
package org.objectweb.proactive.ext.locationserver;

import java.io.IOException;
import java.io.ObjectInputStream;

import org.apache.log4j.Logger;
import org.objectweb.proactive.Body;
import org.objectweb.proactive.core.body.UniversalBody;
import org.objectweb.proactive.core.body.migration.MigrationException;
import org.objectweb.proactive.core.body.migration.MigrationManagerImpl;
import org.objectweb.proactive.core.body.reply.ReplyReceiver;
import org.objectweb.proactive.core.body.request.RequestReceiver;
import org.objectweb.proactive.core.node.Node;
import org.objectweb.proactive.core.util.log.Loggers;
import org.objectweb.proactive.core.util.log.ProActiveLogger;


public class MigrationManagerWithLocationServer extends MigrationManagerImpl {
    static Logger logger = ProActiveLogger.getLogger(Loggers.MIGRATION);
    transient private LocationServer locationServer;
    protected Body myBody;

    //
    // -- CONSTRUCTORS -----------------------------------------------
    //
    public MigrationManagerWithLocationServer() {
    }

    public MigrationManagerWithLocationServer(LocationServer locationServer) {
        this.locationServer = locationServer;
    }

    //
    // -- PUBLIC METHODS -----------------------------------------------
    //

    public void updateLocation(Body body) {
        if (locationServer == null) {
            this.locationServer = LocationServerFactory.getLocationServer();
        }

        //  if (locationServer != null) {
        if (logger.isDebugEnabled()) {
            logger.debug("Updating location with this stub " +
                body.getRemoteAdapter());
        }
        locationServer.updateLocation(body.getID(), body.getRemoteAdapter());
        //   }
    }

    //
    // -- Implements MigrationManager -----------------------------------------------
    //
    public UniversalBody migrateTo(Node node, Body body)
        throws MigrationException {
        locationServer = null;
        if (myBody == null) {
            this.myBody = body;
        }

        //       System.out.println("XXXXXXX");
        UniversalBody remoteBody = super.migrateTo(node, body);

        return remoteBody;
    }

    //    public void startingAfterMigration(Body body) {
    //        //we update our location
    //        //   System.out.println("YYYYYYYY");
    //        super.startingAfterMigration(body);
    //        updateLocation(body);
    //    }
    public RequestReceiver createRequestReceiver(UniversalBody remoteBody,
        RequestReceiver currentRequestReceiver) {
        return new BouncingRequestReceiver();
    }

    public ReplyReceiver createReplyReceiver(UniversalBody remoteBody,
        ReplyReceiver currentReplyReceiver) {
        return currentReplyReceiver;
    }

    private void readObject(ObjectInputStream in)
        throws IOException, ClassNotFoundException {
        in.defaultReadObject();
        this.updateLocation(myBody);
        //      this.updateLocation();
    }
}

---