/*

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 * 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.

 *

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 */

/*

 * @test

 * @bug 5039210

 * @summary test on a client notification deadlock.

 * @author Shanliang JIANG

 * @modules java.management

 * @run clean DeadLockTest

 * @run build DeadLockTest

 * @run main DeadLockTest

 */

import java.net.MalformedURLException;

import java.io.IOException;

import java.util.HashMap;

import javax.management.*;

import javax.management.remote.*;

public class DeadLockTest {

    private static final String[] protocols = {"rmi", "iiop", "jmxmp"};

    private static final MBeanServer mbs = MBeanServerFactory.createMBeanServer();

    public static void main(String[] args) {

        System.out.println(">>> test on a client notification deadlock.");

        boolean ok = true;

        for (int i = 0; i < protocols.length; i++) {

            try {

                test(protocols[i]);

            } catch (Exception e) {

                System.out.println(">>> Test failed for " + protocols[i]);

                e.printStackTrace(System.out);

            }

        }

        System.out.println(">>> Test passed");

    }

    private static void test(String proto)

            throws Exception {

        System.out.println(">>> Test for protocol " + proto);

        JMXServiceURL u = null;

        JMXConnectorServer server = null;

        HashMap env = new HashMap(2);

        // server will close a client connection after 1 second

        env.put("jmx.remote.x.server.connection.timeout", "1000");

        // disable the client ping

        env.put("jmx.remote.x.client.connection.check.period", "0");

        try {

            u = new JMXServiceURL(proto, null, 0);

            server = JMXConnectorServerFactory.newJMXConnectorServer(u, env, mbs);

        } catch (MalformedURLException e) {

            System.out.println(">>> Skipping unsupported URL " + proto);

        }

        server.start();

        JMXServiceURL addr = server.getAddress();

        long st = 2000;

        MyListener myListener;

        // a cycle to make sure that we test the blocking problem.

        do {

            JMXConnector client = JMXConnectorFactory.connect(addr, env);

            MBeanServerConnection conn = client.getMBeanServerConnection();

            myListener = new MyListener(conn);

            client.addConnectionNotificationListener(myListener, null, null);

            // wait the server to close the client connection

            Thread.sleep(st);

            // makes the listener to do a remote request via the connection

            // which should be closed by the server.

            conn.getDefaultDomain();

            // allow the listner to have time to work

            Thread.sleep(100);

            // get a closed notif, should no block.

            client.close();

            Thread.sleep(100);

            st += 2000;

        } while(!myListener.isDone());

        server.stop();

    }

    private static class MyListener implements NotificationListener {

        public MyListener(MBeanServerConnection conn) {

            this.conn = conn;

        }

        public void handleNotification(Notification n, Object h) {

            if (n instanceof JMXConnectionNotification) {

                JMXConnectionNotification jcn = (JMXConnectionNotification)n;

                final String type = jcn.getType();

                System.out.println(">>> The listener receives notif with the type:"+type);

                if (JMXConnectionNotification.CLOSED.equals(type) ||

                    JMXConnectionNotification.FAILED.equals(type)) {

                    synchronized(this) {

                        done = false;

                    }

                    try {

                        conn.getDefaultDomain();

                    } catch (IOException ioe) {

                        // Greate !

                    }

                    synchronized(this) {

                        done = true;

                    }

                    System.out.println(">>> The listener is not blocked!");

                }

            }

        }

        public boolean isDone() {

            synchronized(this) {

                return done;

            }

        }

        private boolean done = false;

        private MBeanServerConnection conn;

    }

}