#!/usr/bin/env python2.5
import data, dhcp_conf, dhcp
import optparse, itertools
def parse_args (argv) :
"""
Parse the command-line arguments from the given argv list, returning a (options_struct, args_list) tuple,
as per optparse.
"""
usage = "Usage: %prog [options] data-file"
# define our options
parser = optparse.OptionParser(usage=usage)
parser.add_option('--dhcpd-conf', dest='dhcpd_conf', metavar='PATH', help="path to dhcpd.conf", default='/etc/dhcp3/dhcpd.conf')
# parse them
options, args = parser.parse_args(args=argv[1:])
# parse the positional arguments
data_file, = args
# ok
return options, (data_file, )
def write_dhcp (options, settings) :
"""
Write the DHCP config module using the data loaded from the given module
"""
# build the config f file
config = dhcp.Config(path=options.dhcpd_conf,
settings = settings.dhcp_settings,
options = settings.dhcp_options,
shared_network = settings.shared_network,
subnets = settings.subnets,
hosts = itertools.chain(*(host.build_dhcp_hosts() for host in settings.hosts)),
)
# write it out
config.write()
def main (argv) :
"""
Our app entry point, parse args, load data, write out the config files
"""
# parse args
options, (data_file, ) = parse_args(argv)
# load the data
data_module = data.load_py('pvl_hosts_data', data_file)
# write out the config files
write_dhcp(options, data_module)
if __name__ == '__main__' :
from sys import argv
main(argv)