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     */
020    package org.sonar.batch.components;
021    
022    import org.apache.commons.configuration.Configuration;
023    import org.apache.commons.lang.StringUtils;
024    import org.sonar.api.BatchExtension;
025    import org.sonar.api.CoreProperties;
026    import org.sonar.api.database.model.Snapshot;
027    import org.sonar.api.utils.Logs;
028    
029    import java.text.ParseException;
030    import java.text.SimpleDateFormat;
031    import java.util.Date;
032    
033    public class PastSnapshotFinder implements BatchExtension {
034    
035      /**
036       * IMPORTANT : please update default values in the ruby side too. See app/helpers/FiltersHelper.rb, method period_names()
037       */
038      private PastSnapshotFinderByDays finderByDays;
039      private PastSnapshotFinderByVersion finderByVersion;
040      private PastSnapshotFinderByDate finderByDate;
041      private PastSnapshotFinderByPreviousAnalysis finderByPreviousAnalysis;
042    
043      public PastSnapshotFinder(PastSnapshotFinderByDays finderByDays, PastSnapshotFinderByVersion finderByVersion,
044                                PastSnapshotFinderByDate finderByDate, PastSnapshotFinderByPreviousAnalysis finderByPreviousAnalysis) {
045        this.finderByDays = finderByDays;
046        this.finderByVersion = finderByVersion;
047        this.finderByDate = finderByDate;
048        this.finderByPreviousAnalysis = finderByPreviousAnalysis;
049      }
050    
051      public PastSnapshot find(Snapshot projectSnapshot, Configuration conf, int index) {
052        String propertyValue = getPropertyValue(conf, index);
053        PastSnapshot pastSnapshot = find(projectSnapshot, index, propertyValue);
054        if (pastSnapshot==null && StringUtils.isNotBlank(propertyValue)) {
055          Logs.INFO.debug("The property " + CoreProperties.TIMEMACHINE_PERIOD_PREFIX + index + " has an unvalid value: " + propertyValue);
056        }
057        return pastSnapshot;
058      }
059    
060      static String getPropertyValue(Configuration conf, int index) {
061        String defaultValue = null;
062        switch (index) {
063          case 1: defaultValue = CoreProperties.TIMEMACHINE_DEFAULT_PERIOD_1; break;
064          case 2: defaultValue = CoreProperties.TIMEMACHINE_DEFAULT_PERIOD_2; break;
065          case 3: defaultValue = CoreProperties.TIMEMACHINE_DEFAULT_PERIOD_3; break;
066          case 4: defaultValue = CoreProperties.TIMEMACHINE_DEFAULT_PERIOD_4; break; // NOSONAR false-positive: constant 4 is the same than 5 (empty string)
067          case 5: defaultValue = CoreProperties.TIMEMACHINE_DEFAULT_PERIOD_5; break; // NOSONAR false-positive: constant 5 is the same than 4 (empty string)
068        }
069        return conf.getString(CoreProperties.TIMEMACHINE_PERIOD_PREFIX + index, defaultValue);
070      }
071    
072      public PastSnapshot findPreviousAnalysis(Snapshot projectSnapshot) {
073        return finderByPreviousAnalysis.findByPreviousAnalysis(projectSnapshot);
074      }
075    
076      public PastSnapshot find(Snapshot projectSnapshot, int index, String property) {
077        if (StringUtils.isBlank(property)) {
078          return null;
079        }
080    
081        PastSnapshot result = findByDays(projectSnapshot, property);
082        if (result == null) {
083          result = findByDate(projectSnapshot, property);
084          if (result == null) {
085            result = findByPreviousAnalysis(projectSnapshot, property);
086            if (result == null) {
087              result = findByVersion(projectSnapshot, property);
088            }
089          }
090        }
091    
092        if (result != null) {
093          result.setIndex(index);
094        }
095    
096        return result;
097      }
098    
099      private PastSnapshot findByPreviousAnalysis(Snapshot projectSnapshot, String property) {
100        PastSnapshot pastSnapshot = null;
101        if (StringUtils.equals(CoreProperties.TIMEMACHINE_MODE_PREVIOUS_ANALYSIS, property)) {
102          pastSnapshot = finderByPreviousAnalysis.findByPreviousAnalysis(projectSnapshot);
103        }
104        return pastSnapshot;
105      }
106    
107      private PastSnapshot findByDate(Snapshot projectSnapshot, String property) {
108        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
109        try {
110          Date date = format.parse(property);
111          return finderByDate.findByDate(projectSnapshot, date);
112    
113        } catch (ParseException e) {
114          return null;
115        }
116      }
117    
118      private PastSnapshot findByVersion(Snapshot projectSnapshot, String property) {
119        return finderByVersion.findByVersion(projectSnapshot, property);
120      }
121    
122      private PastSnapshot findByDays(Snapshot projectSnapshot, String property) {
123        try {
124          int days = Integer.parseInt(property);
125          return finderByDays.findFromDays(projectSnapshot, days);
126    
127        } catch (NumberFormatException e) {
128          return null;
129        }
130      }
131    
132    }