org/objectweb/proactive/ext/scilab/SciEngineWorker.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.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Serializable;
import java.util.ArrayList;

import javasci.SciData;
import javasci.Scilab;

import org.apache.log4j.Logger;
import org.objectweb.proactive.core.util.log.Loggers;
import org.objectweb.proactive.core.util.log.ProActiveLogger;

public class SciEngineWorker implements Serializable{
        private SciTask sciTask; 
        private SciResult sciResult;
        private long dateStart;
        private long dateEnd;
        private boolean isStateFull = false;
        private static Logger logger = ProActiveLogger.getLogger(Loggers.SCILAB_TASK);
        private static SciEngineWorker sciEngineWorker;
        
        
        public SciEngineWorker(){
                Scilab.init();
        }
        
        public SciResult execute(SciTask sciTask){
                logger.debug("->SciEngineTask In:execute:" + sciTask.getId());
                this.sciTask = sciTask;
                this.sciResult = new  SciResult(sciTask.getId());
                
                this.setListDataToScilab();
                
                this.dateStart = System.currentTimeMillis();
                try{    
                        if(executeJob()){
                                getListDataToScilab();
                                this.sciResult.setState(SciResult.SUCCESS);
                        }else{
                                this.sciResult.setState(SciResult.ABORT);
                                System.out.println("->SciEngine test:execute\n");
                        }
                }catch(Exception e){
                        e.printStackTrace();
                        this.sciResult.setState(SciResult.ABORT);
                }
                
                this.dateEnd = System.currentTimeMillis();
                this.sciResult.setTimeExecution(this.dateEnd - this.dateStart);
                return sciResult;
        }

        private void setListDataToScilab(){
                ArrayList listData = this.sciTask.getListDataIn();
        
                SciData data;
                for (int i = 0; i < listData.size(); i++) {
                        data = (SciData) listData.get(i);
                        Scilab.sendData(data);
                }
        }
        
        private void clearScilab(){
                ArrayList listData = this.sciTask.getListDataOut();
                SciData data;
                Scilab.exec("clearglobal();");
                for (int i = 0; i < listData.size(); i++) {
                        data = (SciData) listData.get(i);
                        Scilab.exec("clear " + data.getName() + ";");
                }
        }
                
        private void getListDataToScilab(){
                ArrayList listData = this.sciTask.getListDataOut();
                SciData data;
                for (int i = 0; i < listData.size(); i++) {
                        data = (SciData) listData.get(i);
                        data = Scilab.receiveDataByName(data.getName());
                        this.sciResult.add(data);       
                }
                
                if(!isStateFull){
                        clearScilab();
                }
        }
        
        private boolean executeJob(){
                String job = sciTask.getJobInit() + "\n" + sciTask.getJob();
                BufferedWriter out;
                File temp;
                boolean isValid;
                try {
                        temp = File.createTempFile("scilab", ".sce");
                        temp.deleteOnExit();
                        out = new BufferedWriter(new FileWriter(temp));
                        out.write(job);
                        out.close();
                        logger.debug("->SciEngineTask:executeJob:test1:" + temp.getAbsolutePath());
                        isValid = Scilab.exec("exec(''"+temp.getAbsolutePath()+"'');");
                } catch (IOException e) {
                        isValid = false;
                }
                
                return isValid;
        }
        
        public synchronized static SciResult executeTask(SciTask sciTask){
                if(sciEngineWorker == null){
                        sciEngineWorker = new SciEngineWorker();
                }
                return sciEngineWorker.execute(sciTask);
        }
        
        public void exit(){
                System.exit(0);
        }

}

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