001/*
002 * Sonar, open source software quality management tool.
003 * Copyright (C) 2008-2012 SonarSource
004 * mailto:contact AT sonarsource DOT com
005 *
006 * Sonar is free software; you can redistribute it and/or
007 * modify it under the terms of the GNU Lesser General Public
008 * License as published by the Free Software Foundation; either
009 * version 3 of the License, or (at your option) any later version.
010 *
011 * Sonar is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014 * Lesser General Public License for more details.
015 *
016 * You should have received a copy of the GNU Lesser General Public
017 * License along with Sonar; if not, write to the Free Software
018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
019 */
020package org.sonar.server.plugins;
021
022import java.io.File;
023import java.io.IOException;
024import java.net.URI;
025import java.util.ArrayList;
026import java.util.List;
027
028import org.apache.commons.io.FileUtils;
029import org.apache.commons.lang.StringUtils;
030import org.sonar.api.ServerComponent;
031import org.sonar.api.utils.HttpDownloader;
032import org.sonar.api.utils.Logs;
033import org.sonar.api.utils.SonarException;
034import org.sonar.server.platform.DefaultServerFileSystem;
035import org.sonar.updatecenter.common.Plugin;
036import org.sonar.updatecenter.common.Release;
037import org.sonar.updatecenter.common.Version;
038
039public class PluginDownloader implements ServerComponent {
040
041  private UpdateCenterClient center;
042  private HttpDownloader downloader;
043  private File downloadDir;
044
045  public PluginDownloader(UpdateCenterClient center, HttpDownloader downloader, DefaultServerFileSystem fileSystem) {
046    this.center = center;
047    this.downloader = downloader;
048    this.downloadDir = fileSystem.getDownloadedPluginsDir();
049    try {
050      FileUtils.forceMkdir(downloadDir);
051
052    } catch (IOException e) {
053      throw new SonarException("Fail to create the plugin downloads directory: " + downloadDir, e);
054    }
055  }
056
057  /**
058   * for unit tests
059   */
060  PluginDownloader(UpdateCenterClient center, HttpDownloader downloader, File downloadDir) {
061    this.center = center;
062    this.downloader = downloader;
063    this.downloadDir = downloadDir;
064  }
065
066  public void cancelDownloads() {
067    try {
068      if (downloadDir.exists()) {
069        FileUtils.cleanDirectory(downloadDir);
070      }
071
072    } catch (IOException e) {
073      throw new SonarException("Fail to clean the plugin downloads directory: " + downloadDir, e);
074    }
075  }
076
077  public boolean hasDownloads() {
078    return getDownloads().size() > 0;
079  }
080
081  public List<String> getDownloads() {
082    List<String> names = new ArrayList<String>();
083    List<File> files = (List<File>) FileUtils.listFiles(downloadDir, new String[] { "jar" }, false);
084    for (File file : files) {
085      names.add(file.getName());
086    }
087    return names;
088  }
089
090  public void download(String pluginKey, Version version) {
091    Plugin plugin = center.getCenter().getPlugin(pluginKey);
092    if (plugin == null) {
093      String message = "This plugin does not exist: " + pluginKey;
094      Logs.INFO.warn(message);
095      throw new SonarException(message);
096    }
097
098    Release release = plugin.getRelease(version);
099    if (release == null || StringUtils.isBlank(release.getDownloadUrl())) {
100      String message = "This release can not be installed: " + pluginKey + ", version " + version;
101      Logs.INFO.warn(message);
102      throw new SonarException(message);
103    }
104
105    try {
106      URI uri = new URI(release.getDownloadUrl());
107      String filename = StringUtils.substringAfterLast(uri.getPath(), "/");
108      downloader.download(uri, new File(downloadDir, filename));
109
110    } catch (Exception e) {
111      String message = "Fail to download the plugin (" + pluginKey + ", version " + version + ") from " + release.getDownloadUrl();
112      Logs.INFO.warn(message, e);
113      throw new SonarException(message, e);
114    }
115  }
116}