1 /*
   2  * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 6175517
  27  * @summary Check that Standard MBeans can change their MBeanNotificationInfo[]
  28  * and MXBeans cannot
  29  * @author Eamonn McManus
  30  * @run clean ChangingNotifsTest
  31  * @run build ChangingNotifsTest
  32  * @run main ChangingNotifsTest
  33  */
  34 
  35 import javax.management.*;
  36 import java.util.Arrays;
  37 
  38 public class ChangingNotifsTest {
  39     public static interface EmptyMBean {}
  40 
  41     public static interface EmptyMXBean {}
  42 
  43     public static class Base extends NotificationBroadcasterSupport {
  44         @Override
  45         public MBeanNotificationInfo[] getNotificationInfo() {
  46             MBeanNotificationInfo inf =
  47                 new MBeanNotificationInfo(new String[0],
  48                                           Integer.toString(++called),
  49                                           "description");
  50             return new MBeanNotificationInfo[] {inf};
  51         }
  52 
  53         private static int called;
  54     }
  55 
  56     public static class Empty extends Base implements EmptyMBean {}
  57 
  58     public static class EmptyMX extends Base implements EmptyMXBean {}
  59 
  60     public static void main(String[] args) throws Exception {
  61         MBeanServer mbs = MBeanServerFactory.newMBeanServer();
  62         ObjectName name = new ObjectName("a:b=c");
  63         for (boolean mx : new boolean[] {false, true})
  64             test(mbs, name, mx);
  65         if (failure != null)
  66             throw new Exception(failure);
  67         System.out.println("TEST PASSED");
  68     }
  69 
  70     private static void test(MBeanServer mbs, ObjectName name, boolean mx)
  71             throws Exception {
  72         Object mbean = mx ? new EmptyMX() : new Empty();
  73         String what = mx ? "MXBean" : "Standard MBean";
  74         mbs.registerMBean(mbean, name);
  75         try {
  76             MBeanInfo mbi = mbs.getMBeanInfo(name);
  77             Descriptor d = mbi.getDescriptor();
  78             String immut = (String) d.getFieldValue("immutableInfo");
  79             boolean immutable = (immut != null && immut.equals("true"));
  80             if (immutable != mx) {
  81                 fail(what + " has immutableInfo=" + immut + ", should be " +
  82                      mx);
  83                 return;
  84             }
  85             MBeanNotificationInfo[] n1 = mbi.getNotifications().clone();
  86             mbi = mbs.getMBeanInfo(name);
  87             boolean unchanged = Arrays.deepEquals(mbi.getNotifications(), n1);
  88             if (unchanged != mx) {
  89                 fail(what + " notif info " +
  90                      (unchanged ? "did not change" : "changed"));
  91                 return;
  92             }
  93             System.out.println("OK: " + what);
  94         } finally {
  95             mbs.unregisterMBean(name);
  96         }
  97     }
  98 
  99     private static void fail(String why) {
 100         failure = "FAILED: " + why;
 101         System.out.println(failure);
 102     }
 103 
 104     private static String failure;
 105 }