GetCommandpublic class GetCommand extends MBeanServerCommand | Get the values of one or more MBean attributes. |
| Fields Summary |
|---|
| private ObjectName | objectName | | private List | attributeNames | | private boolean | prefix |
| Constructors Summary |
|---|
public GetCommand()
super("get", "Get the values of one or more MBean attributes");
|
| Methods Summary |
|---|
| public void | displayHelp()
PrintWriter out = context.getWriter();
out.println(desc);
out.println();
out.println("usage: " + name + " [options] <name> [<attr>+]");
out.println(" If no attribute names are given all readable attributes are retrieved");
out.println("options:");
out.println(" --noprefix Do not display attribute name prefixes");
out.println(" -- Stop processing options");
out.flush();
| | public void | execute(java.lang.String[] args)
processArguments(args);
if (objectName == null)
throw new CommandException("Missing object name");
log.debug("attribute names: " + attributeNames);
MBeanServerConnection server = getMBeanServer();
if (attributeNames.size() == 0)
{
// Display all readable attributes
attributeNames.clear();
MBeanInfo info = server.getMBeanInfo(objectName);
MBeanAttributeInfo[] attrInfos = info.getAttributes();
for (int a = 0; a < attrInfos.length; a++)
{
MBeanAttributeInfo attrInfo = attrInfos[a];
if (attrInfo.isReadable())
attributeNames.add(attrInfo.getName());
}
}
String[] names = new String[attributeNames.size()];
attributeNames.toArray(names);
log.debug("as string[]: " + Strings.join(names, ","));
AttributeList attrList = server.getAttributes(objectName, names);
log.debug("attribute list: " + attrList);
if (attrList.size() == 0)
{
throw new CommandException("No matching attributes");
}
else if (attrList.size() != names.length)
{
log.warn("Not all specified attributes were found");
}
PrintWriter out = context.getWriter();
Iterator iter = attrList.iterator();
while (iter.hasNext())
{
Attribute attr = (Attribute) iter.next();
if (prefix)
{
out.print(attr.getName());
out.print("=");
}
out.println(attr.getValue());
}
| | private boolean | processArguments(java.lang.String[] args)
log.debug("processing arguments: " + Strings.join(args, ","));
if (args.length == 0)
{
throw new CommandException("Command requires arguments");
}
String sopts = "-:";
LongOpt[] lopts =
{
new LongOpt("noprefix", LongOpt.NO_ARGUMENT, null, 0x1000),
};
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]);
case 0x1000:
prefix = false;
break;
// non-option arguments
case 1:
{
String arg = getopt.getOptarg();
switch (argidx++)
{
case 0:
objectName = createObjectName(arg);
log.debug("mbean name: " + objectName);
break;
default:
log.debug("adding attribute name: " + arg);
attributeNames.add(arg);
break;
}
break;
}
}
}
return true;
|
|
