1 /*
   2  * Copyright (c) 2005, 2015, 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  * @modules java.management
  31  * @run clean ChangingNotifsTest
  32  * @run build ChangingNotifsTest
  33  * @run main ChangingNotifsTest
  34  */
  35 
  36 import javax.management.*;
  37 import java.util.Arrays;
  38 
  39 public class ChangingNotifsTest {
  40     public static interface EmptyMBean {}
  41 
  42     public static interface EmptyMXBean {}
  43 
  44     public static class Base extends NotificationBroadcasterSupport {
  45         @Override
  46         public MBeanNotificationInfo[] getNotificationInfo() {
  47             MBeanNotificationInfo inf =
  48                 new MBeanNotificationInfo(new String[0],
  49                                           Integer.toString(++called),
  50                                           "description");
  51             return new MBeanNotificationInfo[] {inf};
  52         }
  53 
  54         private static int called;
  55     }
  56 
  57     public static class Empty extends Base implements EmptyMBean {}
  58 
  59     public static class EmptyMX extends Base implements EmptyMXBean {}
  60 
  61     public static void main(String[] args) throws Exception {
  62         MBeanServer mbs = MBeanServerFactory.newMBeanServer();
  63         ObjectName name = new ObjectName("a:b=c");
  64         for (boolean mx : new boolean[] {false, true})
  65             test(mbs, name, mx);
  66         if (failure != null)
  67             throw new Exception(failure);
  68         System.out.println("TEST PASSED");
  69     }
  70 
  71     private static void test(MBeanServer mbs, ObjectName name, boolean mx)
  72             throws Exception {
  73         Object mbean = mx ? new EmptyMX() : new Empty();
  74         String what = mx ? "MXBean" : "Standard MBean";
  75         mbs.registerMBean(mbean, name);
  76         try {
  77             MBeanInfo mbi = mbs.getMBeanInfo(name);
  78             Descriptor d = mbi.getDescriptor();
  79             String immut = (String) d.getFieldValue("immutableInfo");
  80             boolean immutable = (immut != null && immut.equals("true"));
  81             if (immutable != mx) {
  82                 fail(what + " has immutableInfo=" + immut + ", should be " +
  83                      mx);
  84                 return;
  85             }
  86             MBeanNotificationInfo[] n1 = mbi.getNotifications().clone();
  87             mbi = mbs.getMBeanInfo(name);
  88             boolean unchanged = Arrays.deepEquals(mbi.getNotifications(), n1);
  89             if (unchanged != mx) {
  90                 fail(what + " notif info " +
  91                      (unchanged ? "did not change" : "changed"));
  92                 return;
  93             }
  94             System.out.println("OK: " + what);
  95         } finally {
  96             mbs.unregisterMBean(name);
  97         }
  98     }
  99 
 100     private static void fail(String why) {
 101         failure = "FAILED: " + why;
 102         System.out.println(failure);
 103     }
 104 
 105     private static String failure;
 106 }