JMXUtil


1   /**
2    *  Licensed to the Apache Software Foundation (ASF) under one or more
3    *  contributor license agreements.  See the NOTICE file distributed with
4    *  this work for additional information regarding copyright ownership.
5    *  The ASF licenses this file to You under the Apache License, Version 2.0
6    *  (the "License"); you may not use this file except in compliance with
7    *  the License.  You may obtain a copy of the License at
8    *
9    *     http://www.apache.org/licenses/LICENSE-2.0
10   *
11   *  Unless required by applicable law or agreed to in writing, software
12   *  distributed under the License is distributed on an "AS IS" BASIS,
13   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   *  See the License for the specific language governing permissions and
15   *  limitations under the License.
16   */
17  
18  package org.apache.geronimo.system.jmx;
19  
20  import java.util.Iterator  ;
21  import java.util.List  ;
22  import java.util.Set  ;
23  import javax.management.MBeanAttributeInfo  ;
24  import javax.management.MBeanConstructorInfo  ;
25  import javax.management.MBeanInfo  ;
26  import javax.management.MBeanNotificationInfo  ;
27  import javax.management.MBeanOperationInfo  ;
28  import javax.management.MBeanParameterInfo  ;
29  
30  import org.apache.geronimo.gbean.GAttributeInfo;
31  import org.apache.geronimo.gbean.GBeanInfo;
32  import org.apache.geronimo.gbean.GOperationInfo;
33  import org.apache.geronimo.kernel.management.NotificationType;
34  
35  
36  /**
37   * Helper class for JMX Operations
38   *
39   * @version $Rev: 485321 $ $Date: 2006-12-10 19:14:46 -0500 (Sun, 10 Dec 2006) $
40   */
41  public final class JMXUtil {
42      private JMXUtil() {
43      }
44  
45      public static MBeanInfo   toMBeanInfo(GBeanInfo gBeanInfo) {
46          String   className = gBeanInfo.getClassName();
47          String   description = "No description available";
48  
49          // attributes
50          Set   gbeanAttributes = gBeanInfo.getAttributes();
51          MBeanAttributeInfo  [] attributes = new MBeanAttributeInfo  [gbeanAttributes.size()];
52          int a = 0;
53          for (Iterator   iterator = gbeanAttributes.iterator(); iterator.hasNext();) {
54              GAttributeInfo gAttributeInfo = (GAttributeInfo) iterator.next();
55              attributes[a] = new MBeanAttributeInfo  (gAttributeInfo.getName(), gAttributeInfo.getType(), "no description available", gAttributeInfo.isReadable(), gAttributeInfo.isWritable(), isIs(gAttributeInfo));
56              a++;
57          }
58  
59          //we don't expose managed constructors
60          MBeanConstructorInfo  [] constructors = new MBeanConstructorInfo  [0];
61  
62          // operations
63          Set   gbeanOperations = gBeanInfo.getOperations();
64          MBeanOperationInfo  [] operations = new MBeanOperationInfo  [gbeanOperations.size()];
65          int o = 0;
66          for (Iterator   iterator = gbeanOperations.iterator(); iterator.hasNext();) {
67              GOperationInfo gOperationInfo = (GOperationInfo) iterator.next();
68              //list of class names
69              List   gparameters = gOperationInfo.getParameterList();
70              MBeanParameterInfo  [] parameters = new MBeanParameterInfo  [gparameters.size()];
71              int p = 0;
72              for (Iterator   piterator = gparameters.iterator(); piterator.hasNext();) {
73                  String   type = (String  ) piterator.next();
74                  parameters[p] = new MBeanParameterInfo  ("parameter" + p, type, "no description available");
75                  p++;
76              }
77              operations[o] = new MBeanOperationInfo  (gOperationInfo.getName(), "no description available", parameters, gOperationInfo.getReturnType() , MBeanOperationInfo.UNKNOWN);
78              o++;
79          }
80  
81          MBeanNotificationInfo  [] notifications = new MBeanNotificationInfo  [1];
82          notifications[0] = new MBeanNotificationInfo  (NotificationType.TYPES, "javax.management.Notification", "J2EE Notifications");
83  
84          MBeanInfo   mbeanInfo = new MBeanInfo  (className, description, attributes, constructors, operations, notifications);
85          return mbeanInfo;
86      }
87  
88      private static boolean isIs(GAttributeInfo gAttributeInfo) {
89          String   getterName = gAttributeInfo.getGetterName();
90          if (getterName == null) {
91              return false;
92          }
93          return getterName.startsWith("is");
94      }
95  }
96
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