org.opencms.jlan.CmsJlanThreadManager Maven / Gradle / Ivy
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/*
* This library is part of OpenCms -
* the Open Source Content Management System
*
* Copyright (C) Alkacon Software (http://www.alkacon.com)
*
* 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 (at your option) 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.
*
* For further information about Alkacon Software, please see the
* company website: http://www.alkacon.com
*
* For further information about OpenCms, please see the
* project website: http://www.opencms.org
*
* 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
*/
package org.opencms.jlan;
import org.opencms.main.CmsLog;
import org.opencms.main.OpenCms;
import java.io.File;
import org.apache.commons.logging.Log;
import org.alfresco.jlan.app.JLANServer;
/**
* A simple class used to start and stop JLAN.
*
* Since the JLAN server requires its own thread and cannot be run in the same thread as the startup,
* this creates a new thread solely for starting JLAN.
*/
public class CmsJlanThreadManager {
/**
* The thread for starting the JLAN server.
*/
protected class JlanThread extends Thread {
/** Path of the jlan config file. */
private String m_configPath;
/**
* Constructor.
*
* @param configPath the path of the JLAN config file
*/
public JlanThread(String configPath) {
m_configPath = configPath;
}
/**
* @see java.lang.Thread#run()
*/
@Override
public void run() {
CmsJlanServer server = new CmsJlanServer();
// we don't want to interactively shut down the server!
JLANServer.setAllowConsoleShutdown(false);
server.start(new String[] {m_configPath});
}
}
/** The logger for this class. */
private static final Log LOG = CmsLog.getLog(CmsJlanThreadManager.class);
/** The maximum amount of time OpenCms should wait during shutdown after trying to stop the JLAN server. */
private static final int MAX_SHUTDOWN_WAIT_MILLIS = 30000;
/** The JLAN thread instance. */
private Thread m_thread;
/**
* Starts the JLAN server in a new thread.
*/
public synchronized void start() {
String path = OpenCms.getSystemInfo().getAbsoluteRfsPathRelativeToWebInf("config/jlanConfig.xml");
File configFile = new File(path);
if (configFile.exists()) {
if (m_thread == null) {
m_thread = new JlanThread(path);
m_thread.start();
}
} else {
String message = "Not starting JLAN server because no config file was found at " + path;
System.out.println(message);
LOG.warn(message);
}
}
/**
* Tries to stop the JLAN server and return after it is stopped, but will also return if the thread hasn't stopped after MAX_SHUTDOWN_WAIT_MILLIS.
*/
public synchronized void stop() {
if (m_thread != null) {
long timeBeforeShutdownWasCalled = System.currentTimeMillis();
JLANServer.shutdownServer(new String[] {});
while (m_thread.isAlive()
&& ((System.currentTimeMillis() - timeBeforeShutdownWasCalled) < MAX_SHUTDOWN_WAIT_MILLIS)) {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
// ignore
}
}
}
}
}