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/*
* SonarQube
* Copyright (C) 2009-2025 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.Property.CLUSTER_ENABLED;
import static org.sonar.process.ProcessProperties.Property.PATH_DATA;
import static org.sonar.process.ProcessProperties.Property.PATH_LOGS;
import static org.sonar.process.ProcessProperties.Property.PATH_TEMP;
import static org.sonar.process.ProcessProperties.Property.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.getKey());
verifyUnchanged(oldProps, newProps, PATH_WEB.getKey());
verifyUnchanged(oldProps, newProps, PATH_LOGS.getKey());
verifyUnchanged(oldProps, newProps, PATH_TEMP.getKey());
verifyUnchanged(oldProps, newProps, CLUSTER_ENABLED.getKey());
}
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));
}
}
}
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