001    /*
002     * SonarQube, open source software quality management tool.
003     * Copyright (C) 2008-2013 SonarSource
004     * mailto:contact AT sonarsource DOT com
005     *
006     * SonarQube 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     * SonarQube 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 License
017     * along with this program; if not, write to the Free Software Foundation,
018     * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
019     */
020    package org.sonar.home.cache;
021    
022    import org.apache.commons.io.FileUtils;
023    import org.sonar.home.log.Log;
024    import org.sonar.home.log.StandardLog;
025    
026    import javax.annotation.Nullable;
027    
028    import java.io.File;
029    
030    public class FileCacheBuilder {
031    
032      private File userHome;
033      private Log log = new StandardLog();
034    
035      public FileCacheBuilder setUserHome(File d) {
036        this.userHome = d;
037        return this;
038      }
039    
040      public FileCacheBuilder setLog(Log log) {
041        this.log = log;
042        return this;
043      }
044    
045      public FileCacheBuilder setUserHome(@Nullable String path) {
046        this.userHome = (path == null ? null : new File(path));
047        return this;
048      }
049    
050      public FileCache build() {
051        if (userHome == null) {
052          String path = System.getenv("SONAR_USER_HOME");
053          if (path == null) {
054            // Default
055            path = FileUtils.getUserDirectoryPath() + File.separator + ".sonar";
056          }
057          userHome = new File(path);
058        }
059        File cacheDir = new File(userHome, "cache");
060        return FileCache.create(cacheDir, log);
061      }
062    }