Set the log level based on command line args

[Arwen Pond]

I am investigating migrating from log4j 1 to log4j 2.  A pattern that I have in 
many of my applications is setting the log level based on command line 
arguments.  So if the -v (verbose) option is passed I set the log level to 
Info.  The default is set to warn.
    if (line.hasOption("v"))
    {
      logger.setLevel(Level.INFO);
    }

    if (line.hasOption("d"))
    {
      logger.setLevel(Level.DEBUG);
    }

In the world of log4j 2, what is the recommended way to accomplish this?

Thanks,
Arwen



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