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:
064            defaultValue = CoreProperties.TIMEMACHINE_DEFAULT_PERIOD_1;
065            break;
066          case 2:
067            defaultValue = CoreProperties.TIMEMACHINE_DEFAULT_PERIOD_2;
068            break;
069          case 3:
070            defaultValue = CoreProperties.TIMEMACHINE_DEFAULT_PERIOD_3;
071            break;
072          case 4:
073            defaultValue = CoreProperties.TIMEMACHINE_DEFAULT_PERIOD_4;
074            break; // NOSONAR false-positive: constant 4 is the same than 5 (empty string)
075          case 5:
076            defaultValue = CoreProperties.TIMEMACHINE_DEFAULT_PERIOD_5;
077            break; // NOSONAR false-positive: constant 5 is the same than 4 (empty string)
078        }
079        return conf.getString(CoreProperties.TIMEMACHINE_PERIOD_PREFIX + index, defaultValue);
080      }
081    
082      public PastSnapshot findPreviousAnalysis(Snapshot projectSnapshot) {
083        return finderByPreviousAnalysis.findByPreviousAnalysis(projectSnapshot);
084      }
085    
086      public PastSnapshot find(Snapshot projectSnapshot, int index, String property) {
087        if (StringUtils.isBlank(property)) {
088          return null;
089        }
090    
091        PastSnapshot result = findByDays(projectSnapshot, property);
092        if (result == null) {
093          result = findByDate(projectSnapshot, property);
094          if (result == null) {
095            result = findByPreviousAnalysis(projectSnapshot, property);
096            if (result == null) {
097              result = findByVersion(projectSnapshot, property);
098            }
099          }
100        }
101    
102        if (result != null) {
103          result.setIndex(index);
104        }
105    
106        return result;
107      }
108    
109      private PastSnapshot findByPreviousAnalysis(Snapshot projectSnapshot, String property) {
110        PastSnapshot pastSnapshot = null;
111        if (StringUtils.equals(CoreProperties.TIMEMACHINE_MODE_PREVIOUS_ANALYSIS, property)) {
112          pastSnapshot = finderByPreviousAnalysis.findByPreviousAnalysis(projectSnapshot);
113        }
114        return pastSnapshot;
115      }
116    
117      private PastSnapshot findByDate(Snapshot projectSnapshot, String property) {
118        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
119        try {
120          Date date = format.parse(property);
121          return finderByDate.findByDate(projectSnapshot, date);
122    
123        } catch (ParseException e) {
124          return null;
125        }
126      }
127    
128      private PastSnapshot findByVersion(Snapshot projectSnapshot, String property) {
129        return finderByVersion.findByVersion(projectSnapshot, property);
130      }
131    
132      private PastSnapshot findByDays(Snapshot projectSnapshot, String property) {
133        try {
134          int days = Integer.parseInt(property);
135          return finderByDays.findFromDays(projectSnapshot, days);
136    
137        } catch (NumberFormatException e) {
138          return null;
139        }
140      }
141    
142    }