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.server.platform;
021    
022    import org.apache.commons.configuration.Configuration;
023    import org.sonar.api.config.GlobalPropertyChangeHandler;
024    
025    import javax.annotation.Nullable;
026    import java.util.Collections;
027    import java.util.List;
028    
029    /**
030     * Update cache of global settings (see org.sonar.api.config.Settings) and notify org.sonar.api.config.GlobalPropertyChangeHandler extensions
031     *
032     * @since 3.0
033     */
034    public class GlobalSettingsUpdater {
035      private ServerSettings settings;
036      private Configuration deprecatedConf;
037      private List<GlobalPropertyChangeHandler> changeHandlers;
038    
039      public GlobalSettingsUpdater(ServerSettings settings, Configuration config, List<GlobalPropertyChangeHandler> changeHandlers) {
040        this.settings = settings;
041        this.deprecatedConf = config;
042        this.changeHandlers = changeHandlers;
043      }
044    
045      public GlobalSettingsUpdater(ServerSettings settings, Configuration config) {
046        this(settings, config, Collections.<GlobalPropertyChangeHandler>emptyList());
047      }
048    
049      public void setProperty(String key, @Nullable String value) {
050        settings.setProperty(key, value);
051        deprecatedConf.setProperty(key, value);
052    
053        GlobalPropertyChangeHandler.PropertyChange change = GlobalPropertyChangeHandler.PropertyChange.create(key, value);
054        for (GlobalPropertyChangeHandler changeHandler : changeHandlers) {
055          changeHandler.onChange(change);
056        }
057      }
058    }