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/*
* Copyright (c) 2004, 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 NotifBufferSizePropertyNameTest
* @bug 6174229
* @summary Verify the property name specifying server notification buffer size.
* @author Shanliang JIANG
*
* @run clean NotifBufferSizePropertyNameTest
* @run build NotifBufferSizePropertyNameTest
* @run main NotifBufferSizePropertyNameTest
*/
import java.io.IOException;
import java.util.*;
import javax.management.*;
import javax.management.remote.*;
/**
* This class tests also the size of a server notification buffer.
*/
public class NotifBufferSizePropertyNameTest {
private static ObjectName oname;
private static JMXServiceURL url;
private final static NotificationListener listener = new NotificationListener() {
public void handleNotification(Notification n, Object hb) {
// nothing
}
};
public static void main(String[] args) throws Exception {
System.out.println(
"Verify the property name specifying the server notification buffer size.");
oname = new ObjectName ("Default:name=NotificationEmitter");
url = new JMXServiceURL("rmi", null, 0);
Map env = new HashMap(2);
System.out.println("Test the new property name.");
env.put("jmx.remote.x.notification.buffer.size", String.valueOf(bufferSize));
test(env);
System.out.println("Test the old property name.");
env.remove("jmx.remote.x.notification.buffer.size");
env.put("jmx.remote.x.buffer.size", String.valueOf(bufferSize));
test(env);
System.out.println("Test that the new property name overwrite the old one.");
env.put("jmx.remote.x.notification.buffer.size", String.valueOf(bufferSize));
env.put("jmx.remote.x.buffer.size", String.valueOf(bufferSize*6));
test(env);
System.out.println("Test the old property name on system.");
System.setProperty("jmx.remote.x.buffer.size", String.valueOf(bufferSize));
test(null);
System.out.println(
"Test that the new property name overwrite the old one on system.");
System.setProperty("jmx.remote.x.notification.buffer.size",
String.valueOf(bufferSize));
System.setProperty("jmx.remote.x.buffer.size", String.valueOf(bufferSize*6));
test(null);
}
private static void test(Map env) throws Exception {
final MBeanServer mbs = MBeanServerFactory.newMBeanServer();
mbs.registerMBean(new NotificationEmitter(), oname);
JMXConnectorServer server = JMXConnectorServerFactory.newJMXConnectorServer(
url,
env,
mbs);
server.start();
JMXServiceURL addr = server.getAddress();
JMXConnector client = JMXConnectorFactory.connect(addr);
client.getMBeanServerConnection().addNotificationListener(oname,
listener,
null,
null);
Thread.sleep(10); // give time to other notifs
weakNotifs.clear();
// send notifd
mbs.invoke(oname, "sendNotifications",
new Object[] {new Integer(toSend)},
new String[] {"java.lang.Integer"});
client.close();
client = null;
// give time to GC
for(int i=0; i<200; i++) {
if (weakNotifs.keySet().size() > bufferSize) {
Thread.sleep(10);
System.gc();
} else {
break;
}
}
// check
if (weakNotifs.keySet().size() != bufferSize) {
throw new RuntimeException("The buffer size is not correctly specified."+
"\nExpected to be <= "+bufferSize+", but got "+weakNotifs.keySet().size());
}
server.stop();
server = null;
}
//--------------------------
// private classes
//--------------------------
public static class NotificationEmitter extends NotificationBroadcasterSupport
implements NotificationEmitterMBean {
public void sendNotifications(Integer nb) {
Notification notif;
for (int i=1; i<=nb.intValue(); i++) {
notif = new Notification("MyType", this, i);
weakNotifs.put(notif, null);
sendNotification(notif);
}
}
}
public interface NotificationEmitterMBean {
public void sendNotifications(Integer nb);
}
private static final int toSend = 20;
private static final int bufferSize = 10;
private static WeakHashMap weakNotifs = new WeakHashMap(toSend);
}
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