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.batch.scan;
021    
022    import org.apache.commons.lang.StringUtils;
023    import org.sonar.api.BatchComponent;
024    import org.sonar.api.resources.Resource;
025    import org.sonar.api.resources.ResourceUtils;
026    import org.sonar.api.utils.HttpDownloader;
027    import org.sonar.batch.bootstrap.AnalysisMode;
028    import org.sonar.batch.bootstrap.ServerClient;
029    import org.sonar.core.source.db.SnapshotSourceDao;
030    
031    import javax.annotation.CheckForNull;
032    
033    public class LastSnapshots implements BatchComponent {
034    
035      private final AnalysisMode analysisMode;
036      private final ServerClient server;
037      private final SnapshotSourceDao sourceDao;
038    
039      public LastSnapshots(AnalysisMode analysisMode, SnapshotSourceDao dao, ServerClient server) {
040        this.analysisMode = analysisMode;
041        this.sourceDao = dao;
042        this.server = server;
043      }
044    
045      @CheckForNull
046      public String getSource(Resource resource) {
047        String source = null;
048        if (ResourceUtils.isFile(resource)) {
049          if (analysisMode.isPreview()) {
050            source = loadSourceFromWs(resource);
051          } else {
052            source = loadSourceFromDb(resource);
053          }
054        }
055        return StringUtils.defaultString(source, "");
056      }
057    
058      @CheckForNull
059      private String loadSourceFromWs(Resource resource) {
060        try {
061          return server
062            .request("/api/sources?resource=" + ServerClient.encodeForUrl(resource.getEffectiveKey()) + "&format=txt", false, analysisMode.getPreviewReadTimeoutSec() * 1000);
063        } catch (HttpDownloader.HttpException he) {
064          if (he.getResponseCode() == 404) {
065            return "";
066          }
067          throw he;
068        }
069      }
070    
071      @CheckForNull
072      private String loadSourceFromDb(Resource resource) {
073        return sourceDao.selectSnapshotSourceByComponentKey(resource.getEffectiveKey());
074      }
075    }