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.plugins.core.sensors;
021    
022    import org.sonar.api.batch.*;
023    import org.sonar.api.measures.CoreMetrics;
024    import org.sonar.api.measures.Measure;
025    import org.sonar.api.measures.Metric;
026    import org.sonar.api.profiles.RulesProfile;
027    import org.sonar.api.resources.Project;
028    import org.sonar.api.resources.Resource;
029    import org.sonar.api.resources.ResourceUtils;
030    
031    import java.util.List;
032    
033    public class GenerateAlertEvents implements Decorator {
034    
035      private final RulesProfile profile;
036      private final TimeMachine timeMachine;
037    
038      public GenerateAlertEvents(RulesProfile profile, TimeMachine timeMachine) {
039        this.profile = profile;
040        this.timeMachine = timeMachine;
041      }
042    
043      public boolean shouldExecuteOnProject(Project project) {
044        return profile != null && profile.getAlerts() != null && profile.getAlerts().size() > 0;
045      }
046    
047    
048      @DependsUpon
049      public Metric dependsUponAlertStatus() {
050        return CoreMetrics.ALERT_STATUS;
051      }
052    
053      public void decorate(Resource resource, DecoratorContext context) {
054        if (!shouldDecorateResource(resource)) {
055          return;
056        }
057        Measure currentStatus = context.getMeasure(CoreMetrics.ALERT_STATUS);
058        if (currentStatus == null) {
059          return;
060        }
061    
062        TimeMachineQuery query = new TimeMachineQuery(resource).setOnlyLastAnalysis(true).setMetrics(CoreMetrics.ALERT_STATUS);
063        List<Measure> measures = timeMachine.getMeasures(query);
064    
065        Measure pastStatus = (measures != null && measures.size() == 1 ? measures.get(0) : null);
066        if (pastStatus != null && pastStatus.getDataAsLevel() != currentStatus.getDataAsLevel()) {
067          createEvent(context, getName(pastStatus, currentStatus), currentStatus.getAlertText());
068    
069        } else if (pastStatus == null && currentStatus.getDataAsLevel() != Metric.Level.OK) {
070          createEvent(context, getName(currentStatus), currentStatus.getAlertText());
071        }
072    
073      }
074    
075      private boolean shouldDecorateResource(Resource resource) {
076        return ResourceUtils.isRootProject(resource);
077      }
078    
079      private String getName(Measure pastStatus, Measure currentStatus) {
080        return getName(currentStatus) + " (was " + getName(pastStatus) + ")";
081    
082      }
083    
084      private String getName(Measure currentStatus) {
085        return currentStatus.getDataAsLevel().getColorName();
086      }
087    
088      private void createEvent(DecoratorContext context, String name, String description) {
089        context.createEvent(name, description, Event.CATEGORY_ALERT, null);
090      }
091    }