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/*
* Copyright (c) 2006, 2015, 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.
*/
/*
* @test
* @summary Test that we can create proxies which are NotificationEmitters.
* @bug 6411747
* @author Daniel Fuchs
*
* @run clean NotificationEmitterProxy
* @run build NotificationEmitterProxy
* @run main NotificationEmitterProxy
*/
import java.lang.management.ManagementFactory;
import javax.management.*;
import javax.management.remote.*;
import javax.naming.NoPermissionException;
public class NotificationEmitterProxy {
public static class Counter {
int count;
public synchronized int count() {
count++;
notifyAll();
return count;
}
public synchronized int peek() {
return count;
}
public synchronized int waitfor(int max, long timeout)
throws InterruptedException {
final long start = System.currentTimeMillis();
while (count < max && timeout > 0) {
final long rest = timeout -
(System.currentTimeMillis() - start);
if (rest <= 0) break;
wait(rest);
}
return count;
}
}
public static class CounterListener
implements NotificationListener {
final private Counter counter;
public CounterListener(Counter counter) {
this.counter = counter;
}
public void handleNotification(Notification notification,
Object handback) {
System.out.println("Received notif from " + handback +
":\n\t" + notification);
counter.count();
}
}
public static void main(String[] args) throws Exception {
System.out.println("<<< Register for notification from a proxy");
MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
final ObjectName name = new ObjectName(":class=Simple");
JMXServiceURL url = new JMXServiceURL("rmi", null, 0);
final JMXConnectorServer server =
JMXConnectorServerFactory.newJMXConnectorServer(url, null, mbs);
server.start();
url = server.getAddress();
final JMXConnector client = JMXConnectorFactory.connect(url);
final Counter counter = new Counter();
final CounterListener listener = new CounterListener(counter);
final Counter mxcounter = new Counter();
final CounterListener mxlistener = new CounterListener(mxcounter);
final NotificationFilterSupport filter =
new NotificationFilterSupport();
filter.enableType(MBeanServerNotification.REGISTRATION_NOTIFICATION);
filter.enableType(MBeanServerNotification.UNREGISTRATION_NOTIFICATION);
int registered = 0;
try {
final MBeanServerDelegateMBean delegate =
JMX.newMBeanProxy(client.getMBeanServerConnection(),
MBeanServerDelegate.DELEGATE_NAME,
MBeanServerDelegateMBean.class,
true);
NotificationEmitter emitter = (NotificationEmitter)delegate;
emitter.addNotificationListener(listener,filter,"JMX.newMBeanProxy");
} catch (Exception x) {
throw new RuntimeException("Failed to register listener with "+
" JMX.newMBeanProxy: " + x, x);
}
try {
final MBeanServerDelegateMBean delegate =
MBeanServerInvocationHandler.newProxyInstance(mbs,
MBeanServerDelegate.DELEGATE_NAME,
MBeanServerDelegateMBean.class,
true);
NotificationEmitter emitter = (NotificationEmitter)delegate;
emitter.addNotificationListener(listener,filter,
"MBeanServerInvocationHandler.newProxyInstance");
} catch (Exception x) {
throw new RuntimeException("Failed to register listener with "+
" MBeanServerInvocationHandler.newProxyInstance: " + x, x);
}
System.out.println("<<< Register an MBean.");
final Simple simple = new Simple();
mbs.registerMBean(simple, name);
registered++;
SimpleMXBean simple0 =
JMX.newMXBeanProxy(client.getMBeanServerConnection(),
name,
SimpleMXBean.class,
true);
SimpleMXBean simple1 =
JMX.newMXBeanProxy(mbs,
name,
SimpleMXBean.class,
false);
final int expected = 2*registered;
final int reg = counter.waitfor(expected,3000);
if (reg != expected)
throw new RuntimeException("Bad notification count: " + reg +
", expected " +expected);
System.out.println("Received expected "+reg+
" notifs after registerMBean");
((NotificationEmitter)simple0)
.addNotificationListener(mxlistener,null,name);
simple1.equals("Are you a Wombat?");
final int mxnotifs = mxcounter.waitfor(1,3000);
if (mxnotifs != 1)
throw new RuntimeException("Bad MXBean notification count: " +
mxnotifs);
System.out.println("Received expected "+mxnotifs+
" notifs from MXBean");
mbs.unregisterMBean(name);
final int unreg = counter.waitfor(expected+reg,3000);
if (unreg != (expected+reg))
throw new RuntimeException("Bad notification count: " + unreg +
", expected " +expected+reg);
System.out.println("Received expected "+(unreg-reg)+
" notifs after unregisterMBean");
System.out.println("Total notifs received: " + unreg);
}
public static interface Simplest {
}
public static interface SimpleMXBean extends Simplest {
public String equals(String x);
}
private static class Simple extends NotificationBroadcasterSupport
implements SimpleMXBean {
public static final String NOTIF_TYPE = "simple.equals";
private static long seq=0;
private static synchronized long seq() { return ++seq; };
public String equals(String x) {
sendNotification(new Notification(NOTIF_TYPE,this,seq(),x));
return x;
}
}
}
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