/**
* This file is part of Jahia, next-generation open source CMS:
* Jahia's next-generation, open source CMS stems from a widely acknowledged vision
* of enterprise application convergence - web, search, document, social and portal -
* unified by the simplicity of web content management.
*
* For more information, please visit http://www.jahia.com.
*
* Copyright (C) 2002-2011 Jahia Solutions Group SA. All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* As a special exception to the terms and conditions of version 2.0 of
* the GPL (or any later version), you may redistribute this Program in connection
* with Free/Libre and Open Source Software ("FLOSS") applications as described
* in Jahia's FLOSS exception. You should have received a copy of the text
* describing the FLOSS exception, and it is also available here:
* http://www.jahia.com/license
*
* Commercial and Supported Versions of the program (dual licensing):
* alternatively, commercial and supported versions of the program may be used
* in accordance with the terms and conditions contained in a separate
* written agreement between you and Jahia Solutions Group SA.
*
* If you are unsure which license is appropriate for your use,
* please contact the sales department at sales@jahia.com.
*/
//
//
// JahiaFileWatcherBaseService
//
// NK 12.01.2001
//
//
package org.jahia.services.deamons.filewatcher;
import java.io.IOException;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Observer;
import org.jahia.exceptions.JahiaException;
import org.jahia.services.scheduler.SchedulerService;
import org.jahia.tools.files.FileWatcher;
/**
* This Service hold a pool of instance of jahia.tools.FileWatcher Class.
* Each Thread are identified by a name and accessible through this name.
* Threads are added in an Map registry.
*
* @author Khue ng
* @version 1.0
*/
public class JahiaFileWatcherBaseService extends JahiaFileWatcherService {
private static org.slf4j.Logger logger =
org.slf4j.LoggerFactory.getLogger (JahiaFileWatcherBaseService.class);
/** The singelton instance of this class * */
private static JahiaFileWatcherBaseService m_Instance = null;
private SchedulerService schedulerService;
/**
* The Pool of Threads *
*/
private Map m_Registry;
/**
* Protected Constructor
*/
protected JahiaFileWatcherBaseService () {
m_Registry = new HashMap();
}
/**
* Use this method to get an instance of this class
*/
public static synchronized JahiaFileWatcherBaseService getInstance () {
if (m_Instance == null) {
m_Instance = new JahiaFileWatcherBaseService ();
}
return m_Instance;
}
/**
* addFileWatcher
*
* @param threadName the Name to identify this thread
* @param fullFolderPath the real path to the folder to watch
* @param checkDate check new file by last modif date or not
* @param interval the interval in millis
* @param fileOnly if true, only files will be watched, not directories.
*/
public synchronized void addFileWatcher (String threadName,
String fullFolderPath,
boolean checkDate,
long interval,
boolean fileOnly
) throws JahiaException {
try {
FileWatcher fw = new FileWatcher (fullFolderPath,
checkDate,
interval,
fileOnly,
schedulerService);
m_Registry.put (threadName, fw);
//fw.start();
} catch (IOException e) {
logger.error ("addFileWatcher:: " + e.getMessage (), e);
throw new JahiaException ("JahiaFileWatcherBaseService", "failed adding File Watcher",
JahiaException.SERVICE_ERROR, JahiaException.WARNING_SEVERITY, e);
}
}
/**
* Call the start method of the thread
*
* @param threadName the Name to identify this thread
*/
public void startFileWatcher (String threadName) throws JahiaException {
try {
synchronized (this) {
getFileWatcher (threadName).start ();
}
} catch (IOException e) {
logger.error ("startFileWatcher:: " + e.getMessage (), e);
throw new JahiaException ("JahiaFileWatcherBaseService", "failed starting File Watcher",
JahiaException.SERVICE_ERROR, JahiaException.WARNING_SEVERITY, e);
}
}
/**
* Stops the file watcher thread. Should be called when shutting down the
* application.
* @param threadName String the name of the thread to shutdown.
* @throws JahiaException
*/
public void stopFileWatcher (String threadName)
throws JahiaException {
synchronized (this) {
getFileWatcher(threadName).stop();
}
}
/**
* Register an Observer Thread with an Observable Thread
*
* @param threadName the Name of Observable object
* @param obs the observer object
*/
public void registerObserver (String threadName,
Observer obs
) {
synchronized (this) {
getFileWatcher (threadName).addObserver (obs);
}
}
public void start() {}
/**
* Code to clean up the services ressource here. Override this method
* with specific services shutdown codes.
*
* @exception JahiaException
* Raise an JahiaException exception on any failure.
*/
public synchronized void stop ()
throws JahiaException
{
Iterator fileWatcherIter = m_Registry.values().iterator();
while (fileWatcherIter.hasNext()) {
FileWatcher curFileWatcher = (FileWatcher) fileWatcherIter.next();
curFileWatcher.stop();
}
}
/**
* getFileWatcher
*
* @param threadName the Name to identify this thread
*
* @return (FileWatcher) return the FileWatcher Thread or null if
* not in registry
*/
public synchronized FileWatcher getFileWatcher (String threadName) {
return (FileWatcher) m_Registry.get (threadName);
}
public SchedulerService getSchedulerService() {
return schedulerService;
}
public void setSchedulerService(SchedulerService schedulerService) {
this.schedulerService = schedulerService;
}
}