/*

 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code 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 General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * Used to shutdown SimpleApplication (or a subclass). The argument to

 * this class is the name of a file that contains the TCP port number

 * on which SimpleApplication (or a subclass) is listening.

 *

 * Note: When this program returns, the SimpleApplication (or a subclass)

 * may still be running because the application has not yet reached the

 * shutdown check.

 */

import java.net.Socket;

import java.net.InetSocketAddress;

import java.io.File;

import java.io.FileInputStream;

public class ShutdownSimpleApplication {

    public static void main(String args[]) throws Exception {

        if (args.length != 1) {

            throw new RuntimeException("Usage: ShutdownSimpleApplication" +

                " port-file");

        }

        // read the (TCP) port number from the given file

        File f = new File(args[0]);

        FileInputStream fis = new FileInputStream(f);

        byte b[] = new byte[8];

        int n = fis.read(b);

        if (n < 1) {

            throw new RuntimeException("Empty port-file");

        }

        fis.close();

        String str = new String(b, 0, n, "UTF-8");

        System.out.println("INFO: Port number of SimpleApplication: " + str);

        int port = Integer.parseInt(str);

        // Now connect to the port (which will shutdown application)

        System.out.println("INFO: Connecting to port " + port +

            " to shutdown SimpleApplication ...");

        System.out.flush();

        Socket s = new Socket();

        s.connect( new InetSocketAddress(port) );

        s.close();

        System.out.println("INFO: done connecting to SimpleApplication.");

        System.out.flush();

        System.exit(0);

    }

}