Attachment 717182 Details for Bug 927349 – nova-dhcpbridge

nova-dhcpbridge

nova-dhcpbridge (text/plain), 4.25 KB, created by David Hill on 2013-03-27 17:41:40 UTC

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Creator: David Hill

Created: 2013-03-27 17:41:40 UTC

Size: 4.25 KB

patch

obsolete

>#!/usr/bin/python
># vim: tabstop=4 shiftwidth=4 softtabstop=4
>
># Copyright 2010 United States Government as represented by the
># Administrator of the National Aeronautics and Space Administration.
># All Rights Reserved.
>#
>#    Licensed under the Apache License, Version 2.0 (the "License"); you may
>#    not use this file except in compliance with the License. You may obtain
>#    a copy of the License at
>#
>#         http://www.apache.org/licenses/LICENSE-2.0
>#
>#    Unless required by applicable law or agreed to in writing, software
>#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
>#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
>#    License for the specific language governing permissions and limitations
>#    under the License.
>
>"""
>Handle lease database updates from DHCP servers.
>"""
>
>import gettext
>import os
>import sys
>
># If ../nova/__init__.py exists, add ../ to Python search path, so that
># it will override what happens to be installed in /usr/(local/)lib/python...
>possible_topdir = os.path.normpath(os.path.join(os.path.abspath(sys.argv[0]),
>                                   os.pardir,
>                                   os.pardir))
>if os.path.exists(os.path.join(possible_topdir, 'nova', '__init__.py')):
>    sys.path.insert(0, possible_topdir)
>
>gettext.install('nova', unicode=1)
>
>from nova import context
>from nova import db
>from nova import flags
>from nova.network import linux_net
>from nova.openstack.common import importutils
>from nova.openstack.common import log as logging
>from nova.openstack.common import rpc
>from nova import utils
>
>FLAGS = flags.FLAGS
>
>LOG = logging.getLogger('nova.dhcpbridge')
>
>
>def add_lease(mac, ip_address):
>    """Set the IP that was assigned by the DHCP server."""
>    if FLAGS.fake_rabbit:
>        LOG.debug(_("leasing ip"))
>        network_manager = importutils.import_object(FLAGS.network_manager)
>        network_manager.lease_fixed_ip(context.get_admin_context(),
>                                       ip_address)
>    else:
>        rpc.cast(context.get_admin_context(),
>                 "%s.%s" % (FLAGS.network_topic, FLAGS.host),
>                 {"method": "lease_fixed_ip",
>                  "args": {"address": ip_address}})
>
>
>def old_lease(mac, ip_address):
>    """Called when an old lease is recognized."""
>    # NOTE(vish): We assume we heard about this lease the first time.
>    #             If not, we will get it the next time the lease is
>    #             renewed.
>    pass
>
>
>def del_lease(mac, ip_address):
>    """Called when a lease expires."""
>    if FLAGS.fake_rabbit:
>        LOG.debug(_("releasing ip"))
>        network_manager = importutils.import_object(FLAGS.network_manager)
>        network_manager.release_fixed_ip(context.get_admin_context(),
>                                         ip_address)
>    else:
>        rpc.cast(context.get_admin_context(),
>                 "%s.%s" % (FLAGS.network_topic, FLAGS.host),
>                 {"method": "release_fixed_ip",
>                  "args": {"address": ip_address}})
>
>
>def init_leases(network_id):
>    """Get the list of hosts for a network."""
>    ctxt = context.get_admin_context()
>    network_ref = db.network_get(ctxt, network_id)
>    network_manager = importutils.import_object(FLAGS.network_manager)
>    return network_manager.get_dhcp_leases(ctxt, network_ref)
>
>
>def main():
>    """Parse environment and arguments and call the approproate action."""
>    flagfile = os.environ.get('FLAGFILE', FLAGS.dhcpbridge_flagfile)
>    argv = flags.parse_args(sys.argv, default_config_files=[flagfile])
>    logging.setup("nova")
>
>    if int(os.environ.get('TESTING', '0')):
>        from nova.tests import fake_flags
>
>    action = argv[1]
>    if action in ['add', 'del', 'old']:
>        mac = argv[2]
>        ip = argv[3]
>        msg = (_("Called '%(action)s' for mac '%(mac)s' with ip '%(ip)s'") %
>               {"action": action,
>                "mac": mac,
>                "ip": ip})
>        LOG.debug(msg)
>        globals()[action + '_lease'](mac, ip)
>    else:
>        try:
>            network_id = int(os.environ.get('NETWORK_ID'))
>        except TypeError:
>            LOG.error(_("Environment variable 'NETWORK_ID' must be set."))
>            sys.exit(1)
>
>        print init_leases(network_id)
>
>    rpc.cleanup()
>
>
>if __name__ == "__main__":
>    main()

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Attachments on bug 927349: 717182 | 731497