001/*
002 * (C) Copyright 2006-2007 Nuxeo SAS (http://nuxeo.com/) and contributors.
003 *
004 * All rights reserved. This program and the accompanying materials
005 * are made available under the terms of the GNU Lesser General Public License
006 * (LGPL) version 2.1 which accompanies this distribution, and is available at
007 * http://www.gnu.org/licenses/lgpl.html
008 *
009 * This library is distributed in the hope that it will be useful,
010 * but WITHOUT ANY WARRANTY; without even the implied warranty of
011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012 * Lesser General Public License for more details.
013 *
014 * Contributors:
015 *     Nuxeo - initial API and implementation
016 *
017 * $Id: JOOoConvertPluginImpl.java 18651 2007-05-13 20:28:53Z sfermigier $
018 */
019
020package org.nuxeo.ecm.platform.ui.web.restAPI;
021
022import java.util.LinkedList;
023import java.util.List;
024
025import org.apache.commons.logging.Log;
026import org.apache.commons.logging.LogFactory;
027import org.dom4j.Element;
028import org.dom4j.dom.DOMDocument;
029import org.dom4j.dom.DOMDocumentFactory;
030import org.nuxeo.ecm.directory.Directory;
031import org.nuxeo.ecm.directory.DirectoryException;
032import org.nuxeo.ecm.directory.api.DirectoryService;
033import org.nuxeo.runtime.api.Framework;
034import org.restlet.data.CharacterSet;
035import org.restlet.data.Form;
036import org.restlet.data.MediaType;
037import org.restlet.data.Request;
038import org.restlet.data.Response;
039import org.restlet.resource.Representation;
040import org.restlet.resource.StringRepresentation;
041
042/**
043 * Restlet to invalidate the cache of directories from an external application.
044 * <p>
045 * Warning: this restlet can only be used on the JVM that hosts the DirectoryService instance since it is using
046 * non-remotable API. This means this restlet will not work with the multi machine setups of Nuxeo.
047 *
048 * @author ogrisel
049 */
050public class DirectoryCacheRestlet extends BaseNuxeoRestlet {
051
052    private static final Log log = LogFactory.getLog(DirectoryCacheRestlet.class);
053
054    public static final String DIRECTORY_NAME_QUERY_PARAM = "directory";
055
056    @Override
057    public void handle(Request req, Response res) {
058
059        DOMDocumentFactory domFactory = new DOMDocumentFactory();
060        DOMDocument result = (DOMDocument) domFactory.createDocument();
061
062        try {
063            DirectoryService service = Framework.getLocalService(DirectoryService.class);
064            List<Directory> directories = new LinkedList<Directory>();
065            Form form = req.getResourceRef().getQueryAsForm();
066
067            if (form.getNames().contains(DIRECTORY_NAME_QUERY_PARAM)) {
068                // only invalidate the caches of the requested directories
069                String[] directoryNames = form.getValues(DIRECTORY_NAME_QUERY_PARAM).split(",");
070                for (String directoryName : directoryNames) {
071                    Directory directory = service.getDirectory(directoryName);
072                    if (directory == null) {
073                        log.error("no such directory: " + directoryName);
074                    } else {
075                        directories.add(directory);
076                    }
077                }
078            } else {
079                // invalidate all directory caches
080                directories = service.getDirectories();
081            }
082
083            Element invalidatedCachesElement = result.addElement("invalidatedCaches");
084            for (Directory directory : directories) {
085                directory.getCache().invalidateAll();
086                invalidatedCachesElement.addElement("directory").addText(directory.getName());
087            }
088
089        } catch (DirectoryException e) {
090            handleError(res, e);
091            return;
092        }
093        Representation rep = new StringRepresentation(result.asXML(), MediaType.APPLICATION_XML);
094        rep.setCharacterSet(CharacterSet.UTF_8);
095        res.setEntity(rep);
096    }
097
098}