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1
23
24
29 package com.sun.enterprise.jmx.kstat;
30
31 import javax.management.*;
32
33 import java.lang.reflect.Method  ;
34
35 import java.util.ArrayList ;
36 import java.util.Set ;
37 import java.util.Iterator ;
38
39
40
43 public class kstatMBean implements DynamicMBean
44 {
45 private final kstat mSource;
46 private final kstatMgrMBean mMgr;
47 private MBeanInfo mMBeanInfo;
48
49 public
50 kstatMBean( kstatMgrMBean mgr, final kstat source )
51 {
52 mSource = source;
53 mMgr = mgr;
54 }
55
56 public AttributeList
57 getAttributes( String [] names )
58 {
59 final AttributeList list = new AttributeList();
60
61 for( int i = 0; i < names.length; ++i )
62 {
63 final Object value = _getAttribute( names[ i ] );
64 if ( value != null )
65 {
66 list.add( new Attribute( names[ i ], value ) );
67 }
68 }
69
70 return( list );
71 }
72
73 private Object
74 _getAttribute( String name )
75 {
76 final Object value = mSource.getValue( name );
77
78 return( value );
79 }
80
81 public Object
82 getAttribute( String name )
83 {
84 return( _getAttribute( name ) );
85 }
86
87 public AttributeList
88 setAttributes( AttributeList names )
89 {
90 throw new java.lang.UnsupportedOperationException ( "can't set kstat value" );
91 }
92
93 public void
94 setAttribute( Attribute attr )
95 {
96 throw new java.lang.UnsupportedOperationException ( "can't set kstat value" );
97 }
98
99 private Object
100 internalInvoke( String actionName, Object [] params, String [] signature )
101 throws Exception
102 {
103 Object result = null;
104
105 if ( actionName.equals( "refresh" ) )
106 {
107 refresh();
108 }
109 else
110 {
111 throw new OperationsException( "No such method: " + actionName );
112 }
113
114 return( result );
115 }
116
117
118 public Object
119 invoke( String actionName, Object [] params, String [] signature )
120 throws MBeanException, ReflectionException
121 {
122 Object result = null;
123
124 try
125 {
126 result = internalInvoke( actionName, params, signature );
127 }
128 catch( MBeanException e )
129 {
130 throw e;
131 }
132 catch( ReflectionException e )
133 {
134 throw e;
135 }
136 catch( Exception e )
137 {
138 throw new MBeanException( e );
139 }
140
141 return( result );
142 }
143
144 private MBeanAttributeInfo
145 createAttrInfo( String attrName )
146 {
147 final MBeanAttributeInfo info = new MBeanAttributeInfo(
148 attrName,
149 mSource.getAttributeType( attrName ).getName(),
150 "",
151 true, false, false );
152
153 return( info );
154 }
155
156 private MBeanAttributeInfo []
157 createAttrInfos()
158 {
159 final ArrayList list = new ArrayList ();
160
161 final Set attrNames = mSource.getAttributeNames();
162 final Iterator iter = attrNames.iterator();
163 while ( iter.hasNext() )
164 {
165 final String attrName = (String )iter.next();
166 try
167 {
168 final MBeanAttributeInfo info = createAttrInfo( attrName );
169
170 list.add( info );
171 }
172 catch( IllegalArgumentException e )
173 {
174 }
177 }
178
179 final MBeanAttributeInfo [] infos = new MBeanAttributeInfo [ list.size() ];
180 list.toArray( infos );
181
182 return( infos );
183 }
184
185 public void
186 refresh()
187 throws Exception
188 {
189 mMgr.refresh( mSource.getScopedName() );
190 }
191
192
193 private MBeanOperationInfo []
194 createOperationInfos()
195 {
196 final MBeanOperationInfo [] infos = new MBeanOperationInfo[ 1 ];
197
198 try
199 {
200 final Method m = this.getClass().getDeclaredMethod( "refresh", null);
201 infos[ 0 ] = new MBeanOperationInfo(
202 "refresh all attributes for " + mSource.getScopedName(),
203 m );
204 }
205 catch( NoSuchMethodException e )
206 {
207 assert( false );
208 }
209
210 return( infos );
211 }
212
213 public synchronized MBeanInfo
214 getMBeanInfo( )
215 {
216 if ( mMBeanInfo == null )
217 {
218 final MBeanAttributeInfo [] attrInfo = createAttrInfos();
219 final MBeanOperationInfo [] operationInfo = createOperationInfos();
220 final MBeanConstructorInfo [] constructorInfo = new MBeanConstructorInfo[0];
221 final MBeanNotificationInfo [] notificationInfo = new MBeanNotificationInfo[0];
222
223 final MBeanInfo info = new MBeanInfo(
224 this.getClass().getName(),
225 mSource.getScopedName(),
226 attrInfo,
227 constructorInfo,
228 operationInfo,
229 notificationInfo );
230
231 mMBeanInfo = info;
232 }
233
234 return( mMBeanInfo );
235 }
236 };
237
238
239 |
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