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Java > Open Source Codes > com > caucho > services > jmx > MBeanClient


1 /*
2  * Copyright (c) 2001-2004 Caucho Technology, Inc. All rights reserved.
3  *
4  * The Apache Software License, Version 1.1
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  *
10  * 1. Redistributions of source code must retain the above copyright
11  * notice, this list of conditions and the following disclaimer.
12  *
13  * 2. Redistributions in binary form must reproduce the above copyright
14  * notice, this list of conditions and the following disclaimer in
15  * the documentation and/or other materials provided with the
16  * distribution.
17  *
18  * 3. The end-user documentation included with the redistribution, if
19  * any, must include the following acknowlegement:
20  * "This product includes software developed by the
21  * Caucho Technology (http://www.caucho.com/)."
22  * Alternately, this acknowlegement may appear in the software itself,
23  * if and wherever such third-party acknowlegements normally appear.
24  *
25  * 4. The names "Burlap", "Resin", and "Caucho" must not be used to
26  * endorse or promote products derived from this software without prior
27  * written permission. For written permission, please contact
28  * info@caucho.com.
29  *
30  * 5. Products derived from this software may not be called "Resin"
31  * nor may "Resin" appear in their names without prior written
32  * permission of Caucho Technology.
33  *
34  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
35  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
36  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
37  * DISCLAIMED. IN NO EVENT SHALL CAUCHO TECHNOLOGY OR ITS CONTRIBUTORS
38  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
39  * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
40  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
41  * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
42  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
43  * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
44  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
45  *
46  * @author Scott Ferguson
47  */
48
49 package com.caucho.services.jmx;
50
51 import javax.management.MBeanAttributeInfo;
52 import javax.management.MBeanServer;
53 import javax.management.ObjectName;
54 import javax.management.ObjectInstance;
55 import javax.management.MBeanInfo;
56 import javax.management.JMException;
57 import javax.management.RuntimeMBeanException;
58
59 import com.caucho.hessian.jmx.JMXSerializerFactory;
60
61 import com.caucho.hessian.client.HessianProxyFactory;
62
63 import com.caucho.services.server.GenericService;
64
65 /**
66  * Client for mbeans.
67  */
68 public class MBeanClient {
69   private String _url;
70   private RemoteJMX _jmxProxy;
71   
72   /**
73    * Creates the MBeanClient.
74    */
75   public MBeanClient()
76   {
77   }
78   
79   /**
80    * Creates the MBeanClient.
81    */
82   public MBeanClient(String url)
83   {
84     _url = url;
85   }
86
87   /**
88    * Sets the proxy
89    */
90   public void setProxy(RemoteJMX proxy)
91   {
92     _jmxProxy = proxy;
93   }
94
95   /**
96    * Returns the mbean info
97    */
98   public MBeanInfo getMBeanInfo(ObjectName objectName)
99     throws Exception
100   {
101     return getProxy().getMBeanInfo(objectName.getCanonicalName());
102   }
103
104   /**
105    * Gets an attribute.
106    */
107   public Object getAttribute(ObjectName objectName, String attrName)
108     throws Exception
109   {
110     return getProxy().getAttribute(objectName.getCanonicalName(), attrName);
111   }
112
113   private RemoteJMX getProxy()
114   {
115     if (_jmxProxy == null) {
116       try {
117     HessianProxyFactory proxy = new HessianProxyFactory();
118     proxy.getSerializerFactory().addFactory(new JMXSerializerFactory());
119     _jmxProxy = (RemoteJMX) proxy.create(_url);
120       } catch (Exception e) {
121     throw new RuntimeException(e);
122       }
123     }
124
125     return _jmxProxy;
126   }
127 }
128
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