/**
* 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.
*/
package org.jahia.services.content.files;
import org.jahia.services.content.DefaultEventListener;
import org.jahia.services.content.JCRCallback;
import org.jahia.services.content.JCRNodeWrapper;
import org.jahia.services.content.JCRSessionWrapper;
import org.jahia.services.content.JCRTemplate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.jcr.PathNotFoundException;
import javax.jcr.RepositoryException;
import javax.jcr.observation.Event;
import javax.jcr.observation.EventIterator;
import java.util.HashSet;
import java.util.Set;
/**
* Listener for flushing file content cache
* @author toto
*/
public class FileCacheListener extends DefaultEventListener {
private static Logger logger = LoggerFactory.getLogger(FileCacheListener.class);
private FileCacheManager cacheManager;
public FileCacheListener() {
cacheManager = FileCacheManager.getInstance();
}
public int getEventTypes() {
return Event.NODE_ADDED + Event.PROPERTY_ADDED + Event.PROPERTY_CHANGED + Event.PROPERTY_REMOVED;
}
public void onEvent(EventIterator eventIterator) {
final Set<String> nodes = new HashSet<String>();
while (eventIterator.hasNext()) {
Event event = eventIterator.nextEvent();
try {
if (isExternal(event)) {
continue;
}
String path = event.getPath();
String parentPath = path.substring(0, path.lastIndexOf('/'));
String name = path.substring(path.lastIndexOf('/') + 1);
String parentName = parentPath.substring(parentPath.lastIndexOf('/') + 1);
if ((event.getType() == Event.NODE_ADDED || event.getType() == Event.NODE_REMOVED) && name.equals("j:acl")) {
nodes.add(parentPath);
}
if ((event.getType() == Event.PROPERTY_ADDED || event.getType() == Event.PROPERTY_CHANGED) && parentName.equals("j:acl")) {
parentPath = parentPath.substring(0, parentPath.lastIndexOf('/'));
nodes.add(parentPath);
}
if (event.getType() == Event.PROPERTY_CHANGED && name.equals("j:fullpath")) {
// invalidate container HTML cache when the file is moved/renamed
nodes.add(parentPath);
}
if ((event.getType() == Event.PROPERTY_ADDED || event.getType() == Event.PROPERTY_CHANGED) && parentName.equals("jcr:content")) {
parentPath = parentPath.substring(0, parentPath.lastIndexOf('/'));
nodes.add(parentPath);
}
if ((event.getType() == Event.NODE_REMOVED) && name.indexOf(':') == -1) {
nodes.add(path);
}
} catch (RepositoryException e) {
logger.error(e.getMessage(), e);
}
}
if (!nodes.isEmpty()) {
try {
JCRTemplate.getInstance().doExecuteWithSystemSession(null, workspace, new JCRCallback<Object>() {
public Object doInJCR(JCRSessionWrapper session) throws RepositoryException {
try {
for (String s : nodes) {
JCRNodeWrapper n = (JCRNodeWrapper) session.getItem(s);
cacheManager.invalidate(workspace, n.getPath());
}
} catch (Exception e) {
logger.error(e.getMessage(), e);
}
return null;
}
});
} catch (PathNotFoundException e) {
logger.debug("Path not found", e);
} catch (RepositoryException e) {
logger.error("Error while accessing repository", e);
}
}
}
}