/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.console.twiddle.command;
import java.io.PrintWriter;
import javax.management.ObjectName;
import gnu.getopt.Getopt;
import gnu.getopt.LongOpt;
import org.jboss.util.Strings;
/**
* Query the server for a list of matching MBeans.
*
* @version <tt>$Revision: 81010 $</tt>
* @author <a href="mailto:jason@planet57.com">Jason Dillon</a>
* @author Scott.Stark@jboss.org
*/
public class QueryCommand
extends MBeanServerCommand
{
private String query;
private boolean displayCount;
public QueryCommand()
{
super("query", "Query the server for a list of matching MBeans");
}
public void displayHelp()
{
PrintWriter out = context.getWriter();
out.println(desc);
out.println();
out.println("usage: " + name + " [options] <query>");
out.println("options:");
out.println(" -c, --count Display the matching MBean count");
out.println(" -- Stop processing options");
out.println("Examples:");
out.println(" query all mbeans: "+name+" '*:*'");
out.println(" query all mbeans in the jboss.j2ee domain: "+name+" 'jboss.j2ee:*'");
out.flush();
}
private void processArguments(final String[] args)
throws CommandException
{
log.debug("processing arguments: " + Strings.join(args, ","));
if (args.length == 0)
{
throw new CommandException("Command requires arguments");
}
String sopts = "-:c";
LongOpt[] lopts =
{
new LongOpt("count", LongOpt.NO_ARGUMENT, null, 'c'),
};
Getopt getopt = new Getopt(null, args, sopts, lopts);
getopt.setOpterr(false);
int code;
int argidx = 0;
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:
{
String arg = getopt.getOptarg();
switch (argidx++)
{
case 0:
query = arg;
log.debug("query: " + query);
break;
default:
throw new CommandException("Unused argument: " + arg);
}
break;
}
// Show count
case 'c':
displayCount = true;
break;
}
}
}
public void execute(String[] args) throws Exception
{
processArguments(args);
if (query == null)
throw new CommandException("Missing MBean query");
// get the list of object names to work with
ObjectName[] names = queryMBeans(query);
PrintWriter out = context.getWriter();
if (displayCount)
{
out.println(names.length);
}
else
{
for (int i = 0; i < names.length; i++)
{
out.println(names[i]);
}
}
out.flush();
}
}