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#!/usr/bin/env python

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import pvl.args

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import pvl.hosts

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import configobj

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import logging; log = logging.getLogger('pvl.hosts-dhcp')

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import optparse

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def process_hosts (options, hosts) :

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    for host in hosts :

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        if host.owner :

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            yield u"# {owner}".format(owner=host.owner)

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        for index, ethernet in enumerate(host.ethernet) :

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            if len(host.ethernet) > 1 :

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                yield "host {host}-{index} {{".format(host=host, index=index)

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            else :

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                yield "host {host} {{".format(host=host)

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            yield '\toption host-name "{host}";'.format(host=host)

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            yield "\thardware ethernet {ethernet};".format(ethernet=ethernet)

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            if host.ip :

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                yield "\tfixed-address {ip};".format(ip=host.ip)

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            yield "}"

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        yield ""

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def apply_conf (options, lines) :

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    for line in lines :

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        print line

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def main (argv) :

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    """

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        Generate DHCP host configs from host definitions.

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    """

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    parser = optparse.OptionParser(main.__doc__)

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    parser.add_option_group(pvl.args.parser(parser))

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    parser.add_option_group(pvl.hosts.optparser(parser))

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    options, args = parser.parse_args(argv[1:])

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    pvl.args.apply(options)

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    # input

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    hosts = pvl.hosts.apply(options, args)

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    # process

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    apply_conf(options, process_hosts(options, hosts))

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if __name__ == '__main__':

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    pvl.args.main(main)