001/*
002 * (C) Copyright 2006-2013 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Nuxeo - initial API and implementation
018 *
019 */
020
021package org.nuxeo.template.samples.importer;
022
023import java.io.File;
024import java.io.IOException;
025import java.io.InputStream;
026import java.net.URL;
027import java.util.Enumeration;
028
029import org.apache.commons.logging.Log;
030import org.apache.commons.logging.LogFactory;
031import org.nuxeo.common.Environment;
032import org.nuxeo.common.utils.FileUtils;
033import org.nuxeo.common.utils.Path;
034import org.nuxeo.ecm.core.api.NuxeoException;
035import org.osgi.framework.BundleActivator;
036import org.osgi.framework.BundleContext;
037
038/**
039 * The activator expand the sample documents in the data directory.
040 *
041 * @author <a href="mailto:tdelprat@nuxeo.com">Tiry</a>
042 * @author <a href="mailto:ldoguin@nuxeo.com">Laurent Doguin</a>
043 */
044public class TemplateBundleActivator implements BundleActivator {
045
046    private BundleContext context;
047
048    protected static final Log log = LogFactory.getLog(TemplateBundleActivator.class);
049
050    private static File tmpDir;
051
052    private static String dataDirPath;
053
054    protected static String getTemplateResourcesRootPath() {
055        return ModelImporter.RESOURCES_ROOT;
056    }
057
058    public URL getResource(String path) {
059        return this.context.getBundle().getResource(path);
060    }
061
062    public Enumeration<?> findEntries(String path) {
063        return this.context.getBundle().findEntries(path, null, true);
064    }
065
066    public BundleContext getContext() {
067        return context;
068    }
069
070    @Override
071    public void start(BundleContext context) {
072        this.context = context;
073        initDataDirPath();
074        expandResources();
075    }
076
077    @Override
078    public void stop(BundleContext context) {
079        this.context = null;
080        cleanupDataDirPath();
081    }
082
083    /* Note that this may be called twice, because several activators inherit from this class. */
084    protected static void initDataDirPath() {
085        if (dataDirPath != null) {
086            return;
087        }
088        String dataDir = Environment.getDefault().getData().getPath();
089        Path path = new Path(dataDir);
090        path = path.append("resources");
091        dataDirPath = path.toString();
092    }
093
094    @SuppressWarnings("deprecation")
095    protected static void cleanupDataDirPath() {
096        if (tmpDir != null) {
097            FileUtils.deleteTree(tmpDir);
098            tmpDir = null;
099        }
100        dataDirPath = null;
101    }
102
103    protected static Path getDataDirPath() {
104        return new Path(dataDirPath);
105    }
106
107    public void expandResources() {
108        log.info("Deploying templates for bundle " + context.getBundle().getSymbolicName());
109
110        URL sampleRootURL = getResource(getTemplateResourcesRootPath());
111        if (sampleRootURL == null) {
112            return;
113        }
114
115        Path path = getDataDirPath();
116        path = path.append(getTemplateResourcesRootPath());
117        File dataDir = new File(path.toString());
118        if (!dataDir.exists()) {
119            dataDir.mkdirs();
120        }
121
122        Enumeration<?> urls = findEntries(getTemplateResourcesRootPath());
123        while (urls.hasMoreElements()) {
124            URL resourceURL = (URL) urls.nextElement();
125            try {
126                InputStream is = resourceURL.openStream();
127                String filePath = resourceURL.getFile();
128                filePath = filePath.split("/" + getTemplateResourcesRootPath() + "/")[1];
129                filePath = "/" + filePath;
130                File f = new File(dataDir, filePath);
131                File parent = f.getParentFile();
132                if (!parent.exists()) {
133                    parent.mkdirs();
134                }
135                FileUtils.copyToFile(is, f);
136                is.close();
137            } catch (IOException e) {
138                throw new NuxeoException("Failed for template: " + resourceURL, e);
139            }
140        }
141    }
142}