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  • Committer: jaypipes at gmail
  • Date: 2010-08-10 14:00:43 UTC
  • mfrom: (212.1.5 trunk)
  • Revision ID: jaypipes@gmail.com-20100810140043-h4qpq80fbyzivx57
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bin/nova-dhcpbridge
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#    under the License.
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"""
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nova-dhcpbridge
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Handle lease database updates from DHCP servers.
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"""
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FLAGS = flags.FLAGS
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def add_lease(mac, ip, hostname, interface):
 
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def add_lease(_mac, ip, _hostname, _interface):
 
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    """Set the IP that was assigned by the DHCP server."""
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    if FLAGS.fake_rabbit:
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        service.VlanNetworkService().lease_ip(ip)
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    else:
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        rpc.cast("%s.%s" (FLAGS.network_topic, FLAGS.node_name),
 
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        rpc.cast("%s.%s" % (FLAGS.network_topic, FLAGS.node_name),
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                 {"method": "lease_ip",
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                  "args" : {"fixed_ip": ip}})
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def old_lease(mac, ip, hostname, interface):
 
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                  "args": {"fixed_ip": ip}})
 
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def old_lease(_mac, _ip, _hostname, _interface):
 
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    """Do nothing, just an old lease update."""
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    logging.debug("Adopted old lease or got a change of mac/hostname")
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def del_lease(mac, ip, hostname, interface):
 
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def del_lease(_mac, ip, _hostname, _interface):
 
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    """Remove the leased IP from the databases."""
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    if FLAGS.fake_rabbit:
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        service.VlanNetworkService().release_ip(ip)
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    else:
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        rpc.cast("%s.%s" (FLAGS.network_topic, FLAGS.node_name),
 
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        rpc.cast("%s.%s" % (FLAGS.network_topic, FLAGS.node_name),
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                 {"method": "release_ip",
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                  "args" : {"fixed_ip": ip}})
 
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                  "args": {"fixed_ip": ip}})
 
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def init_leases(interface):
 
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    """Get the list of hosts for an interface."""
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    net = model.get_network_by_interface(interface)
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    res = ""
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    for host_name in net.hosts:
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        res += "%s\n" % linux_net.hostDHCP(net, host_name, net.hosts[host_name])
 
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        res += "%s\n" % linux_net.hostDHCP(net, host_name,
 
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                                           net.hosts[host_name])
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    return res
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def main():
 
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    """Parse environment and arguments and call the approproate action."""
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    flagfile = os.environ.get('FLAGFILE', FLAGS.dhcpbridge_flagfile)
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    utils.default_flagfile(flagfile)
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    argv = FLAGS(sys.argv)
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        FLAGS.redis_db = 8
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        FLAGS.network_size = 32
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        FLAGS.connection_type = 'fake'
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        FLAGS.fake_network=True
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        FLAGS.auth_driver='nova.auth.ldapdriver.FakeLdapDriver'
 
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        FLAGS.fake_network = True
 
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        FLAGS.auth_driver = 'nova.auth.ldapdriver.FakeLdapDriver'
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    action = argv[1]
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    if action in ['add','del','old']:
 
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    if action in ['add', 'del', 'old']:
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        mac = argv[2]
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        ip = argv[3]
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        hostname = argv[4]
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        logging.debug("Called %s for mac %s with ip %s and hostname %s on interface %s" % (action, mac, ip, hostname, interface))
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        globals()[action+'_lease'](mac, ip, hostname, interface)
 
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        logging.debug("Called %s for mac %s with ip %s and "
 
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                      "hostname %s on interface %s",
 
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                      action, mac, ip, hostname, interface)
 
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        globals()[action + '_lease'](mac, ip, hostname, interface)
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    else:
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        print init_leases(interface)
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    exit(0)
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if __name__ == "__main__":
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    sys.exit(main())
 
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    main()