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added option handling and command-line help [fixes #1]

master
Tamás Gérczei 1 year ago
parent
commit
09b2a8f5f2
Signed by: tgerczei GPG Key ID: 5B59A7760597B1A1
  1. 17
      hap.py

17
hap.py

@ -4,13 +4,16 @@ from kubernetes import client, config
import sys, random
SVC_TYPE = 'LoadBalancer'
PORT_COUNT = 1
if len(sys.argv) > 1:
try:
PORT_COUNT = int(sys.argv[-1])
except:
sys.exit('optional positional parameter must be a number (default: 1)')
def getopts():
"""parse command-line"""
from optparse import OptionParser, OptionValueError
usage = "%prog [options]"
parser = OptionParser(usage=usage)
parser.add_option("-n", "--count", type="int", default=1, dest="port_count", help="number of ports needed (default: %default)")
return parser.parse_args()
options, args = getopts()
# load client configuration (kubeconfig)
config.load_kube_config()
@ -29,4 +32,4 @@ full_port_range = range(49152, 65536) # https://tools.ietf.org/html/rfc6335#sect
available_ports = list(set(full_port_range) - set(used_ports))
# pick available ports
print(' '.join(map(str, random.sample(available_ports, PORT_COUNT))))
print(' '.join(map(str, random.sample(available_ports, options.port_count))))

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