/**
* Project Wonderland
*
* Copyright (c) 2004-2009, Sun Microsystems, Inc., All Rights Reserved
*
* Redistributions in source code form must reproduce the above
* copyright and this condition.
*
* The contents of this file are subject to the GNU General Public
* License, Version 2 (the "License"); you may not use this file
* except in compliance with the License. A copy of the License is
* available at http://www.opensource.org/licenses/gpl-license.php.
*
* Sun designates this particular file as subject to the "Classpath"
* exception as provided by Sun in the License file that accompanied
* this code.
*/
package org.jdesktop.wonderland.modules.security.server;
import com.sun.sgs.app.AppContext;
import java.io.Serializable;
import java.util.logging.Logger;
import org.jdesktop.wonderland.common.annotation.Plugin;
import org.jdesktop.wonderland.common.cell.CellID;
import org.jdesktop.wonderland.modules.security.server.service.CellResourceManagerInternal;
import org.jdesktop.wonderland.server.ServerPlugin;
import org.jdesktop.wonderland.server.cell.CellComponentMO;
import org.jdesktop.wonderland.server.cell.CellMO;
import org.jdesktop.wonderland.server.cell.ComponentChangeListenerSrv;
import org.jdesktop.wonderland.server.cell.CellParentChangeListenerSrv;
import org.jdesktop.wonderland.server.spatial.CellMOListener;
import org.jdesktop.wonderland.server.spatial.UniverseManager;
/**
* A server plugin that maintains the security cache for all cells. It does
* this by adding some small and stateless listeners to each cell as the cell
* is created. These listeners are used to update the cache as properties
* of the cell like parent and number of components change.
*
* @author Jonathan Kaplan <kaplanj@dev.java.net>
*/
@Plugin
public class SecurityServerPlugin implements ServerPlugin
{
private static final Logger logger =
Logger.getLogger(SecurityServerPlugin.class.getName());
public void initialize() {
// add our listener to the universe manager
UniverseManager um = AppContext.getManager(UniverseManager.class);
um.addCellListener(new SecurityCellMOListener());
}
/**
* A listener that updates the cache as properties of the cell like
* parent and number of components change.
*/
private static final class SecurityCellMOListener
implements CellMOListener, CellParentChangeListenerSrv,
ComponentChangeListenerSrv, Serializable
{
public void cellAdded(CellMO cell) {
cell.addParentChangeListener(this);
cell.addComponentChangeListener(this);
}
public void parentChanged(CellMO cell, CellMO parent) {
CellID parentCellID = null;
if (parent != null) {
parentCellID = parent.getCellID();
}
// make sure this cell's parent is up-to-date
CellResourceManagerInternal crmi =
AppContext.getManager(CellResourceManagerInternal.class);
crmi.updateCellResource(cell.getCellID(), parentCellID);
}
public void componentChanged(CellMO cell, ChangeType type,
CellComponentMO component)
{
// make sure this cell's actions are up-to-date
CellResourceManagerInternal crmi =
AppContext.getManager(CellResourceManagerInternal.class);
switch (type) {
case ADDED:
crmi.updateCellResource(cell.getCellID(), component, true);
break;
case REMOVED:
crmi.updateCellResource(cell.getCellID(), component, false);
break;
}
}
public void cellRemoved(CellMO cell) {
// make sure this cell is removed from the service cache
CellResourceManagerInternal crmi =
AppContext.getManager(CellResourceManagerInternal.class);
crmi.invalidateCellResource(cell.getCellID());
}
}
}