/* * SonarQube * Copyright (C) 2009-2017 SonarSource SA * mailto:info AT sonarsource DOT com * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 3 of the License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ package org.sonar.application; import java.io.IOException; import java.util.Objects; import org.sonar.application.config.AppSettings; import org.sonar.application.config.AppSettingsLoader; import org.sonar.application.config.ClusterSettings; import org.sonar.process.MessageException; import org.sonar.process.Props; import static java.lang.String.format; import static org.sonar.process.ProcessProperties.CLUSTER_ENABLED; import static org.sonar.process.ProcessProperties.PATH_DATA; import static org.sonar.process.ProcessProperties.PATH_LOGS; import static org.sonar.process.ProcessProperties.PATH_TEMP; import static org.sonar.process.ProcessProperties.PATH_WEB; public class AppReloaderImpl implements AppReloader { private final AppSettingsLoader settingsLoader; private final FileSystem fileSystem; private final AppState appState; private final AppLogging logging; public AppReloaderImpl(AppSettingsLoader settingsLoader, FileSystem fileSystem, AppState appState, AppLogging logging) { this.settingsLoader = settingsLoader; this.fileSystem = fileSystem; this.appState = appState; this.logging = logging; } @Override public void reload(AppSettings settings) throws IOException { if (ClusterSettings.isClusterEnabled(settings)) { throw new IllegalStateException("Restart is not possible with cluster mode"); } AppSettings reloaded = settingsLoader.load(); ensureUnchangedConfiguration(settings.getProps(), reloaded.getProps()); settings.reload(reloaded.getProps()); fileSystem.reset(); logging.configure(); appState.reset(); } private static void ensureUnchangedConfiguration(Props oldProps, Props newProps) { verifyUnchanged(oldProps, newProps, PATH_DATA); verifyUnchanged(oldProps, newProps, PATH_WEB); verifyUnchanged(oldProps, newProps, PATH_LOGS); verifyUnchanged(oldProps, newProps, PATH_TEMP); verifyUnchanged(oldProps, newProps, CLUSTER_ENABLED); } private static void verifyUnchanged(Props initialProps, Props newProps, String propKey) { String initialValue = initialProps.nonNullValue(propKey); String newValue = newProps.nonNullValue(propKey); if (!Objects.equals(initialValue, newValue)) { throw new MessageException(format("Property [%s] cannot be changed on restart: [%s] => [%s]", propKey, initialValue, newValue)); } } }