def handle_exec(args):
    """usage: cosmic-ray exec <session-file>

    Perform the remaining work to be done in the specified session.
    This requires that the rest of your mutation testing
    infrastructure (e.g. worker processes) are already running.
    """
    session_file = get_db_name(args.get('<session-file>'))
    cosmic_ray.commands.execute(session_file)

    return ExitCode.OK