vmware-nsx/quantum/db/dhcp_rpc_base.py
Gary Kotton c117074a4b Remove locals() from strings substitutions
Fixes bug 1168988

Change-Id: Ifd1e7a027f16062ff35e777cf2d953f652a806a7
2013-04-20 11:56:26 +00:00

194 lines
7.7 KiB
Python

# Copyright (c) 2012 OpenStack Foundation.
#
# 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.
from oslo.config import cfg
from sqlalchemy.orm import exc
from quantum.api.v2 import attributes
from quantum.common import constants
from quantum.common import utils
from quantum import manager
from quantum.openstack.common import log as logging
LOG = logging.getLogger(__name__)
class DhcpRpcCallbackMixin(object):
"""A mix-in that enable DHCP agent support in plugin implementations."""
def get_active_networks(self, context, **kwargs):
"""Retrieve and return a list of the active network ids."""
host = kwargs.get('host')
LOG.debug(_('Network list requested from %s'), host)
plugin = manager.QuantumManager.get_plugin()
if utils.is_extension_supported(
plugin, constants.AGENT_SCHEDULER_EXT_ALIAS):
if cfg.CONF.network_auto_schedule:
plugin.auto_schedule_networks(context, host)
nets = plugin.list_active_networks_on_active_dhcp_agent(
context, host)
else:
filters = dict(admin_state_up=[True])
nets = plugin.get_networks(context, filters=filters)
return [net['id'] for net in nets]
def get_network_info(self, context, **kwargs):
"""Retrieve and return a extended information about a network."""
network_id = kwargs.get('network_id')
host = kwargs.get('host')
LOG.debug(_('Network %(network_id)s requested from '
'%(host)s'), {'network_id': network_id,
'host': host})
plugin = manager.QuantumManager.get_plugin()
network = plugin.get_network(context, network_id)
filters = dict(network_id=[network_id])
network['subnets'] = plugin.get_subnets(context, filters=filters)
network['ports'] = plugin.get_ports(context, filters=filters)
return network
def get_dhcp_port(self, context, **kwargs):
"""Allocate a DHCP port for the host and return port information.
This method will re-use an existing port if one already exists. When a
port is re-used, the fixed_ip allocation will be updated to the current
network state.
"""
host = kwargs.get('host')
network_id = kwargs.get('network_id')
device_id = kwargs.get('device_id')
# There could be more than one dhcp server per network, so create
# a device id that combines host and network ids
LOG.debug(_('Port %(device_id)s for %(network_id)s requested from '
'%(host)s'), {'device_id': device_id,
'network_id': network_id,
'host': host})
plugin = manager.QuantumManager.get_plugin()
retval = None
filters = dict(network_id=[network_id])
subnets = dict([(s['id'], s) for s in
plugin.get_subnets(context, filters=filters)])
dhcp_enabled_subnet_ids = [s['id'] for s in
subnets.values() if s['enable_dhcp']]
try:
filters = dict(network_id=[network_id], device_id=[device_id])
ports = plugin.get_ports(context, filters=filters)
if ports:
# Ensure that fixed_ips cover all dhcp_enabled subnets.
port = ports[0]
for fixed_ip in port['fixed_ips']:
if fixed_ip['subnet_id'] in dhcp_enabled_subnet_ids:
dhcp_enabled_subnet_ids.remove(fixed_ip['subnet_id'])
port['fixed_ips'].extend(
[dict(subnet_id=s) for s in dhcp_enabled_subnet_ids])
retval = plugin.update_port(context, port['id'],
dict(port=port))
except exc.NoResultFound:
pass
if retval is None:
# No previous port exists, so create a new one.
LOG.debug(_('DHCP port %(device_id)s on network %(network_id)s '
'does not exist on %(host)s'),
{'device_id': device_id,
'network_id': network_id,
'host': host})
network = plugin.get_network(context, network_id)
port_dict = dict(
admin_state_up=True,
device_id=device_id,
network_id=network_id,
tenant_id=network['tenant_id'],
mac_address=attributes.ATTR_NOT_SPECIFIED,
name='',
device_owner='network:dhcp',
fixed_ips=[dict(subnet_id=s) for s in dhcp_enabled_subnet_ids])
retval = plugin.create_port(context, dict(port=port_dict))
# Convert subnet_id to subnet dict
for fixed_ip in retval['fixed_ips']:
subnet_id = fixed_ip.pop('subnet_id')
fixed_ip['subnet'] = subnets[subnet_id]
return retval
def release_dhcp_port(self, context, **kwargs):
"""Release the port currently being used by a DHCP agent."""
host = kwargs.get('host')
network_id = kwargs.get('network_id')
device_id = kwargs.get('device_id')
LOG.debug(_('DHCP port deletion for %(network_id)s request from '
'%(host)s'),
{'network_id': network_id, 'host': host})
plugin = manager.QuantumManager.get_plugin()
filters = dict(network_id=[network_id], device_id=[device_id])
ports = plugin.get_ports(context, filters=filters)
if ports:
plugin.delete_port(context, ports[0]['id'])
def release_port_fixed_ip(self, context, **kwargs):
"""Release the fixed_ip associated the subnet on a port."""
host = kwargs.get('host')
network_id = kwargs.get('network_id')
device_id = kwargs.get('device_id')
subnet_id = kwargs.get('subnet_id')
LOG.debug(_('DHCP port remove fixed_ip for %(subnet_id)s request '
'from %(host)s'),
{'subnet_id': subnet_id, 'host': host})
plugin = manager.QuantumManager.get_plugin()
filters = dict(network_id=[network_id], device_id=[device_id])
ports = plugin.get_ports(context, filters=filters)
if ports:
port = ports[0]
fixed_ips = port.get('fixed_ips', [])
for i in range(len(fixed_ips)):
if fixed_ips[i]['subnet_id'] == subnet_id:
del fixed_ips[i]
break
plugin.update_port(context, port['id'], dict(port=port))
def update_lease_expiration(self, context, **kwargs):
"""Release the fixed_ip associated the subnet on a port."""
host = kwargs.get('host')
network_id = kwargs.get('network_id')
ip_address = kwargs.get('ip_address')
lease_remaining = kwargs.get('lease_remaining')
LOG.debug(_('Updating lease expiration for %(ip_address)s on network '
'%(network_id)s from %(host)s.'),
{'ip_address': ip_address,
'network_id': network_id,
'host': host})
plugin = manager.QuantumManager.get_plugin()
plugin.update_fixed_ip_lease_expiration(context, network_id,
ip_address, lease_remaining)