94d87bce21
Modules import nova.config for two reasons right now - firstly, to reference nova.config.CONF and, secondly, if they use one of the options defined in nova.config. Often modules import nova.openstack.common.cfg and nova.config which is a bit pointless since they could just use cfg.CONF if they just want to nova.config in order to reference CONF. Let's just use cfg.CONF everywhere and we can explicitly state where we actually require options defined in nova.config. Change-Id: Ie4184a74e3e78c99658becb18dce1c2087e450bb
127 lines
4.2 KiB
Python
Executable File
127 lines
4.2 KiB
Python
Executable File
#!/usr/bin/env python
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""
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Handle lease database updates from DHCP servers.
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"""
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import gettext
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import os
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import sys
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# If ../nova/__init__.py exists, add ../ to Python search path, so that
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# it will override what happens to be installed in /usr/(local/)lib/python...
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possible_topdir = os.path.normpath(os.path.join(os.path.abspath(sys.argv[0]),
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os.pardir,
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os.pardir))
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if os.path.exists(os.path.join(possible_topdir, 'nova', '__init__.py')):
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sys.path.insert(0, possible_topdir)
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gettext.install('nova', unicode=1)
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from nova import config
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from nova import context
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from nova import db
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from nova.network import linux_net
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from nova.network import rpcapi as network_rpcapi
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from nova.openstack.common import cfg
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from nova.openstack.common import importutils
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from nova.openstack.common import log as logging
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from nova.openstack.common import rpc
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from nova import utils
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CONF = cfg.CONF
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LOG = logging.getLogger('nova.dhcpbridge')
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def add_lease(mac, ip_address):
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"""Set the IP that was assigned by the DHCP server."""
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if CONF.fake_rabbit:
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LOG.debug(_("leasing ip"))
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network_manager = importutils.import_object(CONF.network_manager)
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network_manager.lease_fixed_ip(context.get_admin_context(),
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ip_address)
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else:
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api = network_rpcapi.NetworkAPI()
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api.lease_fixed_ip(context.get_admin_context(), ip_address, CONF.host)
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def old_lease(mac, ip_address):
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"""Called when an old lease is recognized."""
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# NOTE(vish): We assume we heard about this lease the first time.
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# If not, we will get it the next time the lease is
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# renewed.
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pass
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def del_lease(mac, ip_address):
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"""Called when a lease expires."""
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if CONF.fake_rabbit:
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LOG.debug(_("releasing ip"))
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network_manager = importutils.import_object(CONF.network_manager)
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network_manager.release_fixed_ip(context.get_admin_context(),
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ip_address)
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else:
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api = network_rpcapi.NetworkAPI()
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api.release_fixed_ip(context.get_admin_context(), ip_address,
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CONF.host)
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def init_leases(network_id):
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"""Get the list of hosts for a network."""
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ctxt = context.get_admin_context()
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network_ref = db.network_get(ctxt, network_id)
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network_manager = importutils.import_object(CONF.network_manager)
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return network_manager.get_dhcp_leases(ctxt, network_ref)
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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', CONF.dhcpbridge_flagfile)
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argv = config.parse_args(sys.argv, default_config_files=[flagfile])
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logging.setup("nova")
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if int(os.environ.get('TESTING', '0')):
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from nova.tests import fake_flags
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action = argv[1]
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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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msg = (_("Called '%(action)s' for mac '%(mac)s' with ip '%(ip)s'") %
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{"action": action,
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"mac": mac,
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"ip": ip})
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LOG.debug(msg)
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globals()[action + '_lease'](mac, ip)
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else:
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try:
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network_id = int(os.environ.get('NETWORK_ID'))
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except TypeError:
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LOG.error(_("Environment variable 'NETWORK_ID' must be set."))
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sys.exit(1)
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print init_leases(network_id)
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rpc.cleanup()
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if __name__ == "__main__":
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main()
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