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/*
* SonarQube
* Copyright (C) 2009-2019 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.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.RandomAccessFile;
import java.io.Reader;
import java.net.URISyntaxException;
import java.nio.MappedByteBuffer;
import java.nio.channels.FileChannel;
import java.util.Optional;
import java.util.Properties;
import static java.nio.charset.StandardCharsets.UTF_8;
public class Shutdowner {
public static void main(String[] args) {
try {
new Shutdowner().run();
} catch (Exception e) {
System.err.println(e.getMessage());
System.exit(1);
}
}
void run() throws IOException {
File homeDir = detectHomeDir();
Properties p = loadPropertiesFile(homeDir);
File tmpDir = resolveTempDir(p);
askForHardStop(tmpDir);
}
// assuming jar file is in directory SQ_HOME/lib/
static File detectHomeDir() {
try {
File appJar = new File(Shutdowner.class.getProtectionDomain().getCodeSource().getLocation().toURI());
return appJar.getParentFile().getParentFile();
} catch (URISyntaxException e) {
throw new IllegalStateException("Cannot detect path of shutdowner jar file", e);
}
}
/**
* Loads the configuration file ${homeDir}/conf/sonar.properties.
* An empty {@link Properties} is returned if the file does not exist.
*/
static Properties loadPropertiesFile(File homeDir) {
Properties p = new Properties();
File propsFile = new File(new File(homeDir, "conf"), "sonar.properties");
if (propsFile.exists()) {
try (Reader reader = new InputStreamReader(new FileInputStream(propsFile), UTF_8)) {
p.load(reader);
return p;
} catch (IOException e) {
throw new IllegalStateException("Cannot open file " + propsFile, e);
}
} else {
throw new IllegalStateException("Configuration file not found: " + propsFile);
}
}
static File resolveTempDir(Properties p) {
return new File(Optional.ofNullable(p.getProperty("sonar.path.temp")).orElse("temp"));
}
static void askForHardStop(File tmpDir) throws IOException {
writeToShareMemory(tmpDir, 1, (byte) 0xFF);
}
private static void writeToShareMemory(File tmpDir, int offset, byte value) throws IOException {
try (RandomAccessFile sharedMemory = new RandomAccessFile(new File(tmpDir, "sharedmemory"), "rw")) {
// Using values from org.sonar.process.ProcessCommands
MappedByteBuffer mappedByteBuffer = sharedMemory.getChannel().map(FileChannel.MapMode.READ_WRITE, 0, 50L * 10);
// Now we are stopping all processes as quick as possible
// by asking for stop of "app" process
mappedByteBuffer.put(offset, value);
}
}
}
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