org/objectweb/proactive/ext/scilab/SciEngine.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.scilab;

import java.io.IOException;
import java.io.Serializable;
import java.util.Date;

import org.apache.log4j.Logger;
import org.objectweb.proactive.ProActive;
import org.objectweb.proactive.core.ProActiveException;
import org.objectweb.proactive.core.process.JVMProcessImpl;
import org.objectweb.proactive.core.util.log.Loggers;
import org.objectweb.proactive.core.util.log.ProActiveLogger;
import org.objectweb.proactive.core.util.wrapper.BooleanWrapper;

public class SciEngine implements Serializable  {
        private SciEngineWorker sciEngineWorker;
        private String idEngine; 
        private JVMProcessImpl process;
        private static Logger logger = ProActiveLogger.getLogger(Loggers.SCILAB_WORKER);
        
        public SciEngine() {
        }
        
        public SciEngine(String idEngine) {
                this.idEngine = idEngine; 
        }
        
        
        public void exit(){
                //logger.debug("->SciEngineWorker In:exit");
                this.killWorker();
                System.exit(0);
        }
        
        public SciResult execute(SciTask sciTask){
                logger.debug("->SciEngineWorker In:execute:" + sciTask.getId());
                SciResult sciResult = this.sciEngineWorker.execute(sciTask);
                return sciResult;
        }
        
        public BooleanWrapper activate(){
                logger.debug("->SciEngineWorker In:activate");
                String url = "//localhost/" + idEngine + (new Date()).getTime();
                try{
                        process = new JVMProcessImpl();
                        process.setClassname("org.objectweb.proactive.core.node.StartNode");
                        process.setParameters(url);
                        process.startProcess();
                }catch(IOException e){
                        return new BooleanWrapper(false);
                }
                
                for(int i=0; i<30; i++){
                        try{
                                try{            
                                        sciEngineWorker  =  (SciEngineWorker) ProActive.newActive(SciEngineWorker.class.getName(), null, url);
                                        return new BooleanWrapper(true);
                                }catch(ProActiveException e){
                                        
                                }
                                
                                Thread.sleep(1000);
                        }catch(InterruptedException e){
                                e.printStackTrace();
                        } 
                }
                return new BooleanWrapper(false);
        }
        
        public synchronized void killWorker(){
                process.stopProcess();
        }
}

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