ServerInfoCommandpublic class ServerInfoCommand extends MBeanServerCommand | Get information about the server. |
| Fields Summary |
|---|
| public static final int | UNKNOWN | | public static final int | DEFAULT_DOMAIN | | public static final int | MBEAN_COUNT | | public static final int | LIST_NAMES | | private int | mode |
| Constructors Summary |
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public ServerInfoCommand()
super("serverinfo", "Get information about the MBean server");
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| Methods Summary |
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| public void | displayHelp()
PrintWriter out = context.getWriter();
out.println(desc);
out.println();
out.println("usage: " + name + " [options]");
out.println();
out.println("options:");
out.println(" -d, --domain Get the default domain");
out.println(" -c, --count Get the MBean count");
out.println(" -l, --list List the MBeans");
out.println(" -- Stop processing options");
| | public void | execute(java.lang.String[] args)
processArguments(args);
PrintWriter out = context.getWriter();
MBeanServerConnection server = getMBeanServer();
// mode should be valid, either invalid arg or no arg
switch (mode)
{
case DEFAULT_DOMAIN:
out.println(server.getDefaultDomain());
break;
case MBEAN_COUNT:
out.println(server.getMBeanCount());
break;
case LIST_NAMES:
ObjectName all = new ObjectName("*:*");
Set names = server.queryNames(all, null);
Iterator iter = names.iterator();
while( iter.hasNext() )
out.println(iter.next());
break;
default:
throw new IllegalStateException("invalid mode: " + mode);
}
out.flush();
| | private void | processArguments(java.lang.String[] args)
log.debug("processing arguments: " + Strings.join(args, ","));
if (args.length == 0)
{
throw new CommandException("Command requires arguments");
}
String sopts = "-:dcl";
LongOpt[] lopts =
{
new LongOpt("domain", LongOpt.NO_ARGUMENT, null, 'd"),
new LongOpt("count", LongOpt.NO_ARGUMENT, null, 'c"),
new LongOpt("list", LongOpt.NO_ARGUMENT, null, 'l"),
};
Getopt getopt = new Getopt(null, args, sopts, lopts);
getopt.setOpterr(false);
int code;
while ((code = getopt.getopt()) != -1)
{
switch (code)
{
case ':":
throw new CommandException
("Option requires an argument: "+ args[getopt.getOptind() - 1]);
case '?":
throw new CommandException
("Invalid (or ambiguous) option: " + args[getopt.getOptind() - 1]);
// non-option arguments
case 1:
throw new CommandException("Unused argument: " + getopt.getOptarg());
case 'd":
mode = DEFAULT_DOMAIN;
break;
case 'c":
mode = MBEAN_COUNT;
break;
case 'l":
mode = LIST_NAMES;
break;
}
}
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