ReconfiguratorXml.java

/*
 * JOnAS: Java(TM) Open Application Server
 * Copyright (C) 1999 Bull S.A.
 * Contact: jonas-team@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): Florent Benoit
 * Contributor(s):
 *
 * --------------------------------------------------------------------------
 * $Id: ReconfiguratorXml.java,v 1.2 2004/09/22 17:30:36 ehardesty Exp $
 * --------------------------------------------------------------------------
 */

package org.objectweb.jonas.management;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;

import org.objectweb.util.monolog.api.BasicLevel;

public class ReconfiguratorXml extends AbsReconfigurator {


    private String xml = null;

    public ReconfiguratorXml(String name, String configFileName, String xml) {
        super(name, configFileName);
        this.xml = xml;
    }

    void updateConfig(String xml, long sequence) {
        if (sequence > lastSequence) {
            this.xml = xml;
            lastSequence = sequence;
        } else {
            logger.log(BasicLevel.WARN, "Received out of order reconfiguration message !");
        }
    }


    public void saveConfig(long sequence) throws ReconfigException {
        if (sequence > lastSequence) {
            try {

                BufferedWriter out = new BufferedWriter(new FileWriter(new File(configFileName)));
                out.write(xml);
                out.flush();
                out.close();
                lastSequence = sequence;
                logger.log(BasicLevel.DEBUG, "Configuration file " + configFileName + " updated");
            } catch (FileNotFoundException e) {
                throw new ReconfigException("Cant' save configuration file: " + e.toString());
            } catch(IOException ioe) {
                throw new ReconfigException("Cant' save configuration file: " + ioe.toString());
            }
        } else {
            logger.log(BasicLevel.WARN, "Received out of order save reconfiguration message for " + name + " !");
            logger.log(BasicLevel.WARN, "Can not save !!");
            logger.log(BasicLevel.WARN, "Please reconfigure and than save !!");
        }

    }


}

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