def parse_command_line():
parser = OptParser(option_class=OptChecker,
description=' '.join(_description.split()))
parser.setHelp(_help)
parser.set_usage('%prog ' + _usage)
parser.remove_option('-h')
parser.add_option('--start', action='store_true',
help='Start the Greenplum Performance Monitor web server.')
parser.add_option('--stop', action='store_true',
help='Stop the Greenplum Performance Monitor web server.')
parser.add_option('--restart', action='store_true',
help='Restart the Greenplum Performance Monitor web server.')
parser.add_option('--status', action='store_true',
help='Display the status of the Gerrnplum Performance Monitor web server.')
parser.add_option('--setup', action='store_true',
help='Setup the Greenplum Performance Monitor web server.')
parser.add_option('--version', action='store_true',
help='Display version information')
parser.add_option('--upgrade', action='store_true',
help='Upgrade a previous installation of the Greenplum Performance Monitors web UI')
parser.set_defaults(verbose=False,filters=[], slice=(None, None))
# Parse the command line arguments
(options, args) = parser.parse_args()
if options.version:
version()
sys.exit(0)
# check for too many options
opt_count = 0
if options.start:
opt_count+=1
if options.stop:
opt_count+=1
if options.setup:
opt_count+=1
if options.upgrade:
opt_count+=1
if options.status:
opt_count+=1
if opt_count > 1:
parser.print_help()
parser.exit()
return options, args
