63e41eb293
This patch adds versioning support for the nova-network rpc API. During Folsom development I added versioning to all rpc APIs with the exception of network and volume. I was holding off on those to see what the fate of that code in nova was going to be for sure. Adding it to the volume API in nova doesn't make much sense at this point (but doing it in Cinder does). Since nova-network is sticking around for a while, it seems worthwhile to add a version number to the API for any future changes while the code is still in the tree. There are plenty of things in this rpc API that could be cleaned up or improved, but I held off on doing any of those things. I would recommend the same for anyone else (unless it's a bug that needs to be fixed). I think any further improvements should be focused on Quantum integration with Nova or Quantum itself. Fixes bug 1060197. Change-Id: I63ce57657388166544202af9c44c2298ae551aea
127 lines
4.1 KiB
Python
Executable File
127 lines
4.1 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 context
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from nova import db
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from nova import flags
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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 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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FLAGS = flags.FLAGS
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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 FLAGS.fake_rabbit:
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LOG.debug(_("leasing ip"))
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network_manager = importutils.import_object(FLAGS.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, FLAGS.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 FLAGS.fake_rabbit:
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LOG.debug(_("releasing ip"))
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network_manager = importutils.import_object(FLAGS.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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FLAGS.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(FLAGS.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', FLAGS.dhcpbridge_flagfile)
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argv = flags.parse_args(sys.argv)
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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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