001    /*
002     * SonarQube, open source software quality management tool.
003     * Copyright (C) 2008-2014 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.sonar.home.log.Log;
023    import org.sonar.home.log.StandardLog;
024    
025    import javax.annotation.Nullable;
026    
027    import java.io.File;
028    
029    public class FileCacheBuilder {
030    
031      private File userHome;
032      private Log log = new StandardLog();
033    
034      public FileCacheBuilder setUserHome(File d) {
035        this.userHome = d;
036        return this;
037      }
038    
039      public FileCacheBuilder setLog(Log log) {
040        this.log = log;
041        return this;
042      }
043    
044      public FileCacheBuilder setUserHome(@Nullable String path) {
045        this.userHome = (path == null ? null : new File(path));
046        return this;
047      }
048    
049      public FileCache build() {
050        if (userHome == null) {
051          String path = System.getenv("SONAR_USER_HOME");
052          if (path == null) {
053            // Default
054            path = System.getProperty("user.home") + File.separator + ".sonar";
055          }
056          userHome = new File(path);
057        }
058        File cacheDir = new File(userHome, "cache");
059        return FileCache.create(cacheDir, log);
060      }
061    }