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Java > Open Source Codes > org > jboss > jmx > connector > invoker > client > InvokerAdaptorClientInterceptor


1 /*
2 * JBoss, Home of Professional Open Source
3 * Copyright 2005, JBoss Inc., and individual contributors as indicated
4 * by the @authors tag. See the copyright.txt in the distribution for a
5 * full listing of individual contributors.
6 *
7 * This is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU Lesser General Public License as
9 * published by the Free Software Foundation; either version 2.1 of
10 * the License, or (at your option) any later version.
11 *
12 * This software is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this software; if not, write to the Free
19 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
21 */
22 package org.jboss.jmx.connector.invoker.client;
23
24 import org.jboss.invocation.Invocation;
25 import org.jboss.invocation.PayloadKey;
26 import org.jboss.proxy.Interceptor;
27
28 import javax.management.ObjectName JavaDoc;
29
30 /**
31 * An Interceptor that plucks the object name out of the arguments
32 * into an unmarshalled part of the payload.
33 *
34 * @author <a HREF="mailto:adrian.brock@happeningtimes.com">Adrian Brock</a>
35 * @version $Revision: 37459 $
36 */
37 public class InvokerAdaptorClientInterceptor
38    extends Interceptor
39 {
40    // Constants -----------------------------------------------------
41
42    // Attributes ----------------------------------------------------
43
44    // Constructors --------------------------------------------------
45
46    public InvokerAdaptorClientInterceptor()
47    {
48       // For externalization to work
49 }
50    
51    // Public --------------------------------------------------------
52
53    /**
54     * Invoke using the invoker for remote invocations
55     */
56    public Object JavaDoc invoke(Invocation invocation)
57       throws Throwable JavaDoc
58    {
59       // Retrieve any relevent object name for this invocation
60 ObjectName JavaDoc objectName = getObjectNameFromArguments(invocation);
61       if (objectName != null)
62          invocation.setValue("JMX_OBJECT_NAME", objectName, PayloadKey.AS_IS);
63
64       try
65       {
66          return getNext().invoke(invocation);
67       }
68       catch (InvokerAdaptorException e)
69       {
70          throw e.getWrapped();
71       }
72    }
73
74    /**
75     * Return any target object name relevent for this invocation.<p>
76     *
77     * Methods that don't pass arguments that could be custom classes are ignored.<p>
78     *
79     * Classloading and registerMBean are ignored,
80     * they shouldn't be available remotely
81     */
82    public ObjectName JavaDoc getObjectNameFromArguments(Invocation invocation)
83    {
84       String JavaDoc method = invocation.getMethod().getName();
85       if (method.equals("invoke") ||
86          method.equals("setAttribute") ||
87          method.equals("setAttributes") ||
88          method.equals("addNotificationListener") ||
89          method.equals("removeNotificationListener"))
90       {
91          return (ObjectName JavaDoc) invocation.getArguments()[0];
92       }
93
94       return null;
95    }
96
97    // Private -------------------------------------------------------
98
99    // Inner classes -------------------------------------------------
100 }
101
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