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1 package org.apache.tools.ant.taskdefs.optional.jmx;
2
3
52
53
54 import javax.management.MBeanParameterInfo  ;
55 import org.apache.tools.ant.BuildException;
56
57
58
59
71 public class ShowMBeanTask extends AbstractMBeanTask {
72
73
74
77 private static final int ATTR_NAME_COL_LENGTH = 35;
78
79
82 private static final int ATTR_TYPE_COL_LENGTH = 40;
83
84
87 private static final int ATTR_PERM_COL_LENGTH = 6;
88
89
92 private static final int ATTR_VALUE_COL_LENGTH = 20;
93
94
100 protected void execute(javax.management.MBeanServer mbserver)
101 throws BuildException {
102
103 try {
104 javax.management.ObjectName mbeanName = getObjectName();
105
106 if (mbserver.isRegistered(mbeanName)) {
107
108 try {
109
110 javax.management.MBeanInfo mbeanInfo = mbserver.getMBeanInfo(mbeanName);
111
112 if (mbeanInfo != null) {
113 log("Description of MBean [" + mbeanName+ "]");
114
115 showAttributes(mbserver,mbeanInfo);
116 showOperations(mbserver,mbeanInfo);
117 showConstructors(mbserver,mbeanInfo);
118
119 } else {
120 log("Warning! MBeanInfo was null for mbean at " + toString(),org.apache.tools.ant.Project.MSG_WARN);
121 }
122
123 } catch (Exception x) {
124 String message = "Cannot show mbean " + mbeanName;
125 throw new BuildException(message);
126 }
127
128 } else {
129 throw new BuildException("Cannot find MBean. " + mbeanName.getCanonicalName());
130 }
131
132 } catch (javax.management.MalformedObjectNameException x) {
133 x.printStackTrace();
134 throw new BuildException(x);
135 }
136 }
137
138 private static void repeat(StringBuffer buffer, char toRepeat, int repeatTimes) {
139 for (int counter = 0; counter < repeatTimes; counter++) {
140 buffer.append(toRepeat);
141 }
142 }
143
144 private static void pad(StringBuffer buffer, String toPad, int length) {
145 int diff = length - toPad.length();
146 if (diff <= 0) {
147 buffer.append(toPad.substring(0,length));
148 } else {
149 buffer.append(toPad);
150 repeat(buffer,' ',diff);
151 }
152 }
153
154 protected void showAttributes(javax.management.MBeanServer mbserver,
155 javax.management.MBeanInfo mbeanInfo)
156 throws javax.management.MalformedObjectNameException ,
157 javax.management.MBeanException ,
158 javax.management.AttributeNotFoundException ,
159 javax.management.InstanceNotFoundException ,
160 javax.management.ReflectionException
161 {
162
163 log("\nList of attributes for MBean [" + getObjectName() + "]");
164 StringBuffer header = new StringBuffer ();
165 pad(header,"Name",ATTR_NAME_COL_LENGTH+1);
166 pad(header,"Type",ATTR_TYPE_COL_LENGTH+1);
167 pad(header,"Access",ATTR_PERM_COL_LENGTH+1);
168 header.append("Value");
169 log(header.toString());
170
171 header = new StringBuffer ();
172 repeat(header,'-',ATTR_NAME_COL_LENGTH);
173 header.append(" ");
174 repeat(header,'-',ATTR_TYPE_COL_LENGTH);
175 header.append(" ");
176 repeat(header,'-',ATTR_PERM_COL_LENGTH);
177 header.append(" ");
178 repeat(header,'-',ATTR_VALUE_COL_LENGTH);
179 log(header.toString());
180
181 javax.management.MBeanAttributeInfo [] info = mbeanInfo.getAttributes();
182 if (info != null) {
183 for (int counter = 0; counter < info.length; counter++) {
188 String attribValueAsString = "";
192 if (info[counter].isReadable()) {
193 Object attribValue = mbserver.getAttribute(getObjectName(),info[counter].getName());
194 attribValueAsString = org.apache.tools.ant.taskdefs.optional.jmx.converter.ValueFactory.toString(attribValue);
195 }
196 StringBuffer message = new StringBuffer ();
197
198 pad(message,info[counter].getName(),ATTR_NAME_COL_LENGTH);
199 message.append(" ");
200 pad(message,info[counter].getType(),ATTR_TYPE_COL_LENGTH);
201 message.append(" ");
202 if (info[counter].isReadable() && info[counter].isWritable()) {
203 pad(message,"RW",ATTR_PERM_COL_LENGTH);
204 } else if (info[counter].isReadable()) {
205 pad(message,"R-",ATTR_PERM_COL_LENGTH);
206 } else if (info[counter].isWritable()) {
207 pad(message,"-W",ATTR_PERM_COL_LENGTH);
208 } else {
209 pad(message,"--",ATTR_PERM_COL_LENGTH);
210 }
211 message.append(" ");
212 message.append(attribValueAsString != null ? attribValueAsString : "null");
213 log(message.toString());
214 }
215
216 }
217 }
218
219 protected void showOperations(javax.management.MBeanServer mbserver,
220 javax.management.MBeanInfo mbeanInfo)
221 throws javax.management.MalformedObjectNameException {
222
223 log("\nList of operations for MBean [" + getObjectName() + "]");
224 javax.management.MBeanOperationInfo [] info = mbeanInfo.getOperations();
225 if (info != null) {
226 for (int counter = 0; counter < info.length; counter++) {
231 StringBuffer opDesc = new StringBuffer ();
232
233 opDesc.append(info[counter].getReturnType() + " " + info[counter].getName() + "(");
234 MBeanParameterInfo [] paramInfo = info[counter].getSignature();
235 for (int paramCounter = 0; paramCounter < paramInfo.length; paramCounter++) {
236 opDesc.append(paramInfo[paramCounter].getType());
237 if ((paramInfo[paramCounter].getName() == null) || (paramInfo[paramCounter].getName().length() == 0)
238 || (paramInfo[paramCounter].getType() == paramInfo[paramCounter].getName())) {
239 opDesc.append(" arg" + paramCounter);
240 } else {
241 opDesc.append(" " + paramInfo[paramCounter].getName());
242 }
243 if ((paramCounter+1) < paramInfo.length) {
244 opDesc.append(", ");
245 }
246 }
247 opDesc.append(");");
248 log("\t"+opDesc.toString());
249 }
250 }
251 }
252
253 protected void showConstructors(javax.management.MBeanServer mbserver,
254 javax.management.MBeanInfo mbeanInfo)
255 throws javax.management.MalformedObjectNameException {
256
257 log("\nList of constructors for MBean [" + getObjectName() + "]");
258 javax.management.MBeanConstructorInfo [] info = mbeanInfo.getConstructors();
259 if (info != null) {
260 for (int counter = 0; counter < info.length; counter++) {
265 StringBuffer opDesc = new StringBuffer ();
266
267 opDesc.append(info[counter].getName() + "(");
268 MBeanParameterInfo [] paramInfo = info[counter].getSignature();
269 for (int paramCounter = 0; paramCounter < paramInfo.length; paramCounter++) {
270 opDesc.append(paramInfo[paramCounter].getType());
271 if ((paramInfo[paramCounter].getName() == null) || (paramInfo[paramCounter].getName().length() == 0)
272 || (paramInfo[paramCounter].getType() == paramInfo[paramCounter].getName())) {
273 opDesc.append(" arg" + paramCounter);
274 } else {
275 opDesc.append(" " + paramInfo[paramCounter].getName());
276 }
277 if ((paramCounter+1) < paramInfo.length) {
278 opDesc.append(", ");
279 }
280 }
281 opDesc.append(");");
282 log("\t"+opDesc.toString());
283 }
284 }
285 }
286
287
288 }
289
290 |
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