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1
22 package org.jboss.console.twiddle.command;
23
24 import java.io.PrintWriter  ;
25
26 import javax.management.ObjectName ;
27 import javax.management.MBeanServerConnection ;
28 import javax.management.MBeanInfo ;
29 import javax.management.MBeanAttributeInfo ;
30 import javax.management.MBeanOperationInfo ;
31 import javax.management.MBeanParameterInfo ;
32
33 import gnu.getopt.Getopt;
34 import gnu.getopt.LongOpt;
35
36 import org.jboss.util.Strings;
37
38
43 public class InfoCommand
44 extends MBeanServerCommand
45 {
46 private ObjectName objectName;
47
48 public InfoCommand()
49 {
50 super("info", "Get the metadata for an MBean");
51 }
52
53 public void displayHelp()
54 {
55 PrintWriter out = context.getWriter();
56
57 out.println(desc);
58 out.println();
59 out.println("usage: " + name + " <mbean-name>");
60 out.println(" Use '*' to query for all attributes");
61 out.flush();
62 }
63
64 private boolean processArguments(final String [] args)
65 throws CommandException
66 {
67 log.debug("processing arguments: " + Strings.join(args, ","));
68
69 if (args.length == 0)
70 {
71 throw new CommandException("Command requires arguments");
72 }
73
74 String sopts = "-:";
75 LongOpt[] lopts =
76 {
77 };
78
79 Getopt getopt = new Getopt(null, args, sopts, lopts);
80 getopt.setOpterr(false);
81
82 int code;
83 int argidx = 0;
84
85 while ((code = getopt.getopt()) != -1)
86 {
87 switch (code)
88 {
89 case ':':
90 throw new CommandException
91 ("Option requires an argument: " + args[getopt.getOptind() - 1]);
92
93 case '?':
94 throw new CommandException
95 ("Invalid (or ambiguous) option: " + args[getopt.getOptind() - 1]);
96
97 case 1:
99 {
100 String arg = getopt.getOptarg();
101
102 switch (argidx++)
103 {
104 case 0:
105 objectName = createObjectName(arg);
106 log.debug("mbean name: " + objectName);
107 break;
108 }
109 break;
110 }
111 }
112 }
113
114 return true;
115 }
116
117 public void execute(String [] args) throws Exception
118 {
119 processArguments(args);
120
121 if (objectName == null)
122 throw new CommandException("Missing object name");
123
124 MBeanServerConnection server = getMBeanServer();
125 MBeanInfo mbeanInfo = server.getMBeanInfo(objectName);
126 MBeanAttributeInfo [] attrInfo = mbeanInfo.getAttributes();
127 MBeanOperationInfo [] opInfo = mbeanInfo.getOperations();
128
129 PrintWriter out = context.getWriter();
130 out.println("Description: "+mbeanInfo.getDescription());
131 out.println("+++ Attributes:");
132 int length = attrInfo != null ? attrInfo.length : 0;
133 for(int n = 0; n < length; n ++)
134 {
135 MBeanAttributeInfo info = attrInfo[n];
136 out.print(" Name: ");
137 out.println(info.getName());
138 out.print(" Type: ");
139 out.println(info.getType());
140 String rw = "";
141 if( info.isReadable() )
142 rw = "r";
143 else
144 rw = "-";
145 if( info.isWritable() )
146 rw += "w";
147 else
148 rw += "-";
149 out.print(" Access: ");
150 out.println(rw);
151 }
152
153 out.println("+++ Operations:");
154 length = opInfo != null ? opInfo.length : 0;
155 for(int n = 0; n < length; n ++)
156 {
157 MBeanOperationInfo info = opInfo[n];
158 out.print(' ');
159 out.print(info.getReturnType());
160 out.print(' ');
161 out.print(info.getName());
162 out.print('(');
163 MBeanParameterInfo [] sig = info.getSignature();
164 for(int s = 0; s < sig.length; s ++)
165 {
166 out.print(sig[s].getType());
167 out.print(' ');
168 out.print(sig[s].getName());
169 if( s < sig.length-1 )
170 out.print(',');
171 }
172 out.println(')');
173 }
174 }
175 }
176 |
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