1 /*
   2  * Copyright (c) 2006, 2011, 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 6403794
  27  * @summary Test that all the platform MXBeans are wrapped in StandardMBean so
  28  *          an MBeanServer which does not have support for MXBeans can be used.
  29  * @author Luis-Miguel Alventosa
  30  * @run clean MBeanServerMXBeanUnsupportedTest
  31  * @run build MBeanServerMXBeanUnsupportedTest
  32  * @run main/othervm MBeanServerMXBeanUnsupportedTest
  33  */
  34 
  35 import java.lang.management.ManagementFactory;
  36 import java.lang.reflect.InvocationHandler;
  37 import java.lang.reflect.Method;
  38 import java.lang.reflect.Proxy;


  39 import javax.management.MBeanServer;
  40 import javax.management.MBeanServerBuilder;
  41 import javax.management.MBeanServerDelegate;
  42 import javax.management.ObjectName;
  43 import javax.management.StandardMBean;
  44 import javax.management.remote.MBeanServerForwarder;
  45 
  46 public class MBeanServerMXBeanUnsupportedTest {
  47 
  48     /**
  49      * An MBeanServerBuilder that returns an MBeanServer which throws a
  50      * RuntimeException if MXBeans are not converted into StandardMBean.
  51      */
  52     public static class MBeanServerBuilderImpl extends MBeanServerBuilder {
  53 
  54         private final MBeanServerBuilder inner;
  55 
  56         public MBeanServerBuilderImpl() {
  57             inner = new MBeanServerBuilder();
  58         }
  59 
  60         public MBeanServer newMBeanServer(
  61                 String defaultDomain,
  62                 MBeanServer outer,
  63                 MBeanServerDelegate delegate) {
  64             final MBeanServerForwarder mbsf =
  65                     MBeanServerForwarderInvocationHandler.newProxyInstance();
  66 
  67             final MBeanServer innerMBeanServer =
  68                     inner.newMBeanServer(defaultDomain,
  69                     (outer == null ? mbsf : outer),
  70                     delegate);
  71 
  72             mbsf.setMBeanServer(innerMBeanServer);
  73             return mbsf;
  74         }
  75     }
  76 
  77     /**
  78      * An MBeanServerForwarderInvocationHandler that throws a
  79      * RuntimeException if we try to register a non StandardMBean.
  80      */
  81     public static class MBeanServerForwarderInvocationHandler
  82             implements InvocationHandler {
  83 



  84         public static MBeanServerForwarder newProxyInstance() {
  85 
  86             final InvocationHandler handler =
  87                     new MBeanServerForwarderInvocationHandler();
  88 
  89             final Class[] interfaces =
  90                     new Class[] {MBeanServerForwarder.class};
  91 
  92             Object proxy = Proxy.newProxyInstance(
  93                     MBeanServerForwarder.class.getClassLoader(),
  94                     interfaces,
  95                     handler);
  96 
  97             return MBeanServerForwarder.class.cast(proxy);
  98         }
  99 
 100         public Object invoke(Object proxy, Method method, Object[] args)
 101                 throws Throwable {
 102 
 103             final String methodName = method.getName();
 104 
 105             if (methodName.equals("getMBeanServer")) {
 106                 return mbs;
 107             }
 108 
 109             if (methodName.equals("setMBeanServer")) {
 110                 if (args[0] == null)
 111                     throw new IllegalArgumentException("Null MBeanServer");
 112                 if (mbs != null)
 113                     throw new IllegalArgumentException("MBeanServer object " +
 114                             "already initialized");
 115                 mbs = (MBeanServer) args[0];
 116                 return null;
 117             }
 118 
 119             if (methodName.equals("registerMBean")) {
 120                 Object mbean = args[0];
 121                 ObjectName name = (ObjectName) args[1];
 122                 String domain = name.getDomain();
 123                 System.out.println("registerMBean: class=" +
 124                         mbean.getClass().getName() + "\tname=" + name);
 125                 Object result = method.invoke(mbs, args);
 126                 if (domain.equals("java.lang") ||
 127                     domain.equals("java.util.logging") ||
 128                     domain.equals("com.sun.management")) {

 129                     String mxbean = (String)
 130                         mbs.getMBeanInfo(name).getDescriptor().getFieldValue("mxbean");
 131                     if (mxbean == null || !mxbean.equals("true")) {
 132                         throw new RuntimeException(
 133                                 "Platform MBeans must be MXBeans!");
 134                     }
 135                     if (!(mbean instanceof StandardMBean)) {
 136                         throw new RuntimeException(
 137                                 "MXBeans must be wrapped in StandardMBean!");
 138                     }
 139                 }

 140                 return result;
 141             }
 142 
 143             return method.invoke(mbs, args);
 144         }
 145 
 146         private MBeanServer mbs;
 147     }
 148 
 149     /*
 150      * Standalone entry point.
 151      *
 152      * Run the test and report to stdout.
 153      */
 154     public static void main(String args[]) throws Exception {
 155         System.setProperty("javax.management.builder.initial",
 156                 MBeanServerBuilderImpl.class.getName());
 157         try {
 158             ManagementFactory.getPlatformMBeanServer();
 159         } catch (RuntimeException e) {
 160             System.out.println(">>> Unhappy Bye, Bye!");
 161             throw e;
 162         }
 163         System.out.println(">>> Happy Bye, Bye!");
 164     }
 165 }
--- EOF ---