/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
package org.apache.karaf.main;
import java.io.*;
import java.net.ConnectException;
import java.net.Socket;
/**
* Main class used to check the status of the root Karaf instance.
*/
public class Status {
/**
* Checks if the shutdown port is bound. The shutdown port can be configured in config.properties
* or in the shutdown port file.
*
* @param args The arguments to the status main method.
* @throws Exception If an error occurs while checking the status.
*/
public static void main(String[] args) throws Exception {
ConfigProperties config = new ConfigProperties();
if (config.shutdownPort == 0 && config.portFile != null) {
try {
config.shutdownPort = getPortFromShutdownPortFile(config.portFile);
} catch (FileNotFoundException fnfe) {
System.err.println(config.portFile + " shutdown port file doesn't exist. The container is not running.");
System.exit(3);
} catch (IOException ioe) {
System.err.println("Can't read " + config.portFile + " port file: " + ioe.getMessage());
System.exit(4);
}
}
if (config.shutdownPort > 0) {
Socket s = null;
try {
s = new Socket(config.shutdownHost, config.shutdownPort);
if (s.isBound()) {
System.out.println("Running ...");
System.exit(0);
} else {
System.out.println("Not Running ...");
System.exit(1);
}
} catch (ConnectException connectException) {
System.out.println("Not Running ...");
System.exit(1);
} finally {
if (s != null) {
s.close();
}
}
} else {
System.err.println("Unable to find port...");
System.exit(2);
}
}
private static int getPortFromShutdownPortFile(String portFile) throws FileNotFoundException, IOException {
int port;
BufferedReader r = new BufferedReader(new InputStreamReader(new FileInputStream(portFile)));
String portStr = r.readLine();
port = Integer.parseInt(portStr);
r.close();
return port;
}
}