org.fabric3.runtime.standalone.server.Shutdown Maven / Gradle / Ivy
/*
* Fabric3
* Copyright (c) 2009-2015 Metaform Systems
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Portions originally based on Apache Tuscany 2007
* licensed under the Apache 2.0 license.
*/
package org.fabric3.runtime.standalone.server;
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.net.URL;
/**
* Shuts down a server instance by placing a {@code f3.shutdown} file in the runtime data directory.
*
* The main method takes one parameter, the runtime name, and defaults to "vm".
*/
public class Shutdown {
public static void main(String[] args) {
String runtimeName = args.length > 0 ? args[0] : "vm";
File installDir = getInstallDirectory(Shutdown.class);
File dataDir = new File(installDir, "runtimes" + File.separatorChar + runtimeName + File.separatorChar + "data");
try {
if (!dataDir.exists()) {
System.out.println("Runtime configuration does not exist. Unable to shutdown: " + runtimeName);
return;
}
new File(dataDir, "f3.shutdown").createNewFile();
System.out.println("Fabric3 shutting down");
} catch (IOException e) {
System.out.println("Unable to shutdown server: " + runtimeName);
e.printStackTrace();
}
}
/**
* Gets the installation directory based on the location of a class file. The installation directory is calculated by determining the path of the jar
* containing the given class file and returning its parent directory.
*
* @param clazz the class to use as a way to find the executable jar
* @return directory where Fabric3 runtime is installed.
* @throws IllegalStateException if the location could not be determined from the location of the class file
*/
public static File getInstallDirectory(Class clazz) throws IllegalStateException {
// get the name of the Class's bytecode
String name = clazz.getName();
int last = name.lastIndexOf('.');
if (last != -1) {
name = name.substring(last + 1);
}
name = name + ".class";
// get location of the bytecode - should be a jar: URL
URL url = clazz.getResource(name);
if (url == null) {
throw new IllegalStateException("Unable to get location of bytecode resource " + name);
}
String jarLocation = url.toString();
if (!jarLocation.startsWith("jar:")) {
throw new IllegalStateException("Must be run from a jar: " + url);
}
// extract the location of thr jar from the resource URL
jarLocation = jarLocation.substring(4, jarLocation.lastIndexOf("!/"));
if (!jarLocation.startsWith("file:")) {
throw new IllegalStateException("Must be run from a local filesystem: " + jarLocation);
}
File jarFile = new File(URI.create(jarLocation));
return jarFile.getParentFile().getParentFile();
}
}