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


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 java.io.IOException;
52
53 import javax.management.MBeanAttributeInfo;
54 import javax.management.MBeanServerConnection;
55 import javax.management.ObjectName;
56 import javax.management.ObjectInstance;
57 import javax.management.MBeanInfo;
58 import javax.management.JMException;
59
60 import com.caucho.services.server.GenericService;
61
62 /**
63  * JMX service.
64  */
65 public class ReadJMXService extends GenericService implements RemoteJMX {
66   private MBeanServerConnection _server;
67
68   /**
69    * Sets the mbean server.
70    */
71   public void setMBeanServer(MBeanServerConnection server)
72   {
73     _server = server;
74   }
75
76   /**
77    * Initialize the server.
78    */
79   public void init()
80   {
81     if (_server == null)
82       throw new NullPointerException("mbean-server is required");
83   }
84   
85   /**
86    * Returns the mbean info
87    */
88   public MBeanInfo getMBeanInfo(String objectName)
89     throws JMException, IOException
90   {
91     return _server.getMBeanInfo(new ObjectName(objectName));
92   }
93   
94   /**
95    * Returns an attribute.
96    */
97   public Object getAttribute(String objectName, String attributeName)
98     throws JMException, IOException
99   {
100     return _server.getAttribute(new ObjectName(objectName), attributeName);
101   }
102 }
103
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