|
1
22 package org.jboss.console.twiddle.command;
23
24 import java.io.PrintWriter  ;
25
26 import javax.management.ObjectName ;
27
28 import gnu.getopt.Getopt;
29 import gnu.getopt.LongOpt;
30
31 import org.jboss.util.Strings;
32
33
40 public class QueryCommand
41 extends MBeanServerCommand
42 {
43 private String query;
44
45 private boolean displayCount;
46
47 public QueryCommand()
48 {
49 super("query", "Query the server for a list of matching MBeans");
50 }
51
52 public void displayHelp()
53 {
54 PrintWriter out = context.getWriter();
55
56 out.println(desc);
57 out.println();
58 out.println("usage: " + name + " [options] <query>");
59 out.println("options:");
60 out.println(" -c, --count Display the matching MBean count");
61 out.println(" -- Stop processing options");
62 out.println("Examples:");
63 out.println(" query all mbeans: "+name+" '*:*'");
64 out.println(" query all mbeans in the jboss.j2ee domain: "+name+" 'jboss.j2ee:*'");
65
66 out.flush();
67 }
68
69 private void processArguments(final String [] args)
70 throws CommandException
71 {
72 log.debug("processing arguments: " + Strings.join(args, ","));
73
74 if (args.length == 0)
75 {
76 throw new CommandException("Command requires arguments");
77 }
78
79 String sopts = "-:c";
80 LongOpt[] lopts =
81 {
82 new LongOpt("count", LongOpt.NO_ARGUMENT, null, 'c'),
83 };
84
85 Getopt getopt = new Getopt(null, args, sopts, lopts);
86 getopt.setOpterr(false);
87
88 int code;
89 int argidx = 0;
90
91 while ((code = getopt.getopt()) != -1)
92 {
93 switch (code)
94 {
95 case ':':
96 throw new CommandException
97 ("Option requires an argument: " + args[getopt.getOptind() - 1]);
98
99 case '?':
100 throw new CommandException
101 ("Invalid (or ambiguous) option: " + args[getopt.getOptind() - 1]);
102
103 case 1:
105 {
106 String arg = getopt.getOptarg();
107
108 switch (argidx++)
109 {
110 case 0:
111 query = arg;
112 log.debug("query: " + query);
113 break;
114
115 default:
116 throw new CommandException("Unused argument: " + arg);
117 }
118 break;
119 }
120
121 case 'c':
123 displayCount = true;
124 break;
125 }
126 }
127 }
128
129 public void execute(String [] args) throws Exception
130 {
131 processArguments(args);
132
133 if (query == null)
134 throw new CommandException("Missing MBean query");
135
136
137 ObjectName [] names = queryMBeans(query);
139
140 PrintWriter out = context.getWriter();
141
142 if (displayCount)
143 {
144 out.println(names.length);
145 }
146 else
147 {
148 for (int i = 0; i < names.length; i++)
149 {
150 out.println(names[i]);
151 }
152 }
153
154 out.flush();
155 }
156 }
157 |
Popular Tags |
Java API By Example, From Geeks To Geeks.