001/*
002 * (C) Copyright 2006-2016 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 */
019package org.nuxeo.template.samples.importer;
020
021import java.io.File;
022import java.io.IOException;
023import java.io.InputStream;
024import java.net.URL;
025import java.util.Enumeration;
026
027import org.apache.commons.io.FileUtils;
028import org.apache.commons.logging.Log;
029import org.apache.commons.logging.LogFactory;
030import org.nuxeo.common.Environment;
031import org.nuxeo.common.utils.Path;
032import org.nuxeo.ecm.core.api.NuxeoException;
033import org.osgi.framework.BundleActivator;
034import org.osgi.framework.BundleContext;
035
036/**
037 * The activator expand the sample documents in the data directory.
038 *
039 * @author <a href="mailto:[email protected]">Tiry</a>
040 * @author <a href="mailto:[email protected]">Laurent Doguin</a>
041 */
042public class TemplateBundleActivator implements BundleActivator {
043
044    private BundleContext context;
045
046    protected static final Log log = LogFactory.getLog(TemplateBundleActivator.class);
047
048    private static File tmpDir;
049
050    private static String dataDirPath;
051
052    protected static String getTemplateResourcesRootPath() {
053        return ModelImporter.RESOURCES_ROOT;
054    }
055
056    public URL getResource(String path) {
057        return this.context.getBundle().getResource(path);
058    }
059
060    public Enumeration<?> findEntries(String path) {
061        return this.context.getBundle().findEntries(path, null, true);
062    }
063
064    public BundleContext getContext() {
065        return context;
066    }
067
068    @Override
069    public void start(BundleContext context) {
070        this.context = context;
071        initDataDirPath();
072        expandResources();
073    }
074
075    @Override
076    public void stop(BundleContext context) {
077        this.context = null;
078        cleanupDataDirPath();
079    }
080
081    /* Note that this may be called twice, because several activators inherit from this class. */
082    protected static void initDataDirPath() {
083        if (dataDirPath != null) {
084            return;
085        }
086        String dataDir = Environment.getDefault().getData().getPath();
087        Path path = new Path(dataDir);
088        path = path.append("resources");
089        dataDirPath = path.toString();
090    }
091
092    @SuppressWarnings("deprecation")
093    protected static void cleanupDataDirPath() {
094        if (tmpDir != null) {
095            FileUtils.deleteQuietly(tmpDir);
096            tmpDir = null;
097        }
098        dataDirPath = null;
099    }
100
101    protected static Path getDataDirPath() {
102        return new Path(dataDirPath);
103    }
104
105    public void expandResources() {
106        log.info("Deploying templates for bundle " + context.getBundle().getSymbolicName());
107
108        URL sampleRootURL = getResource(getTemplateResourcesRootPath());
109        if (sampleRootURL == null) {
110            return;
111        }
112
113        Path path = getDataDirPath();
114        path = path.append(getTemplateResourcesRootPath());
115        File dataDir = new File(path.toString());
116        if (!dataDir.exists()) {
117            dataDir.mkdirs();
118        }
119
120        Enumeration<?> urls = findEntries(getTemplateResourcesRootPath());
121        while (urls.hasMoreElements()) {
122            URL resourceURL = (URL) urls.nextElement();
123            try (InputStream is = resourceURL.openStream()) {
124                String filePath = resourceURL.getFile();
125                filePath = filePath.split("/" + getTemplateResourcesRootPath() + "/")[1];
126                filePath = "/" + filePath;
127                File f = new File(dataDir, filePath);
128                File parent = f.getParentFile();
129                if (!parent.exists()) {
130                    parent.mkdirs();
131                }
132                FileUtils.copyInputStreamToFile(is, f);
133            } catch (IOException e) {
134                throw new NuxeoException("Failed for template: " + resourceURL, e);
135            }
136        }
137    }
138}