001/* Module deinitializer for hadoop module.
002 * 
003 * Copyright (c) 2012-2013 The Regents of the University of California.
004 * All rights reserved.
005 *
006 * '$Author: crawl $'
007 * '$Date: 2014-11-12 23:21:09 +0000 (Wed, 12 Nov 2014) $' 
008 * '$Revision: 33070 $'
009 * 
010 * Permission is hereby granted, without written agreement and without
011 * license or royalty fees, to use, copy, modify, and distribute this
012 * software and its documentation for any purpose, provided that the above
013 * copyright notice and the following two paragraphs appear in all copies
014 * of this software.
015 *
016 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
017 * FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
018 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
019 * THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
020 * SUCH DAMAGE.
021 *
022 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
023 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
024 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
025 * PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
026 * CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
027 * ENHANCEMENTS, OR MODIFICATIONS.
028 *
029 */
030package org.kepler.module.hadoop;
031
032import org.kepler.hadoop.director.HadoopEngine;
033import org.kepler.module.ModuleShutdownable;
034
035import ptolemy.kernel.util.IllegalActionException;
036import ptolemy.util.MessageHandler;
037
038/** Module deinitializer for hadoop module.
039 * 
040 *  @author Jianwu Wang
041 *  @version $Id: Shutdown.java 33070 2014-11-12 23:21:09Z crawl $
042 */
043
044public class Shutdown implements ModuleShutdownable {
045
046    /** Shutdown the Hadoop server if one was started. */
047    @Override
048    public void shutdownModule() {
049        
050        try {
051                HadoopEngine.shutdownServer();
052        } catch (IllegalActionException e) {
053            MessageHandler.error("Error stopping Hadoop server.", e);
054        }        
055    }
056
057}