77409d9adc
This patch implements the L3 Scheduler changes for the Distributed Virtual Routers. Partially-implements: blueprint neutron-ovs-dvr Change-Id: I407c3d639ebdf885b1418bceac7cfc251e7eba1f Co-Authored-By: Carl Baldwin <carl.baldwin@hp.com> Co-Authored-By: Armando Migliaccio <armamig@gmail.com>
210 lines
9.8 KiB
Python
210 lines
9.8 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 neutron.common import constants
|
|
from neutron.common import utils
|
|
from neutron import context as neutron_context
|
|
from neutron.extensions import l3
|
|
from neutron.extensions import portbindings
|
|
from neutron import manager
|
|
from neutron.openstack.common import jsonutils
|
|
from neutron.openstack.common import log as logging
|
|
from neutron.plugins.common import constants as plugin_constants
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
class L3RpcCallbackMixin(object):
|
|
"""A mix-in that enable L3 agent rpc support in plugin implementations."""
|
|
|
|
def sync_routers(self, context, **kwargs):
|
|
"""Sync routers according to filters to a specific agent.
|
|
|
|
@param context: contain user information
|
|
@param kwargs: host, router_ids
|
|
@return: a list of routers
|
|
with their interfaces and floating_ips
|
|
"""
|
|
router_ids = kwargs.get('router_ids')
|
|
host = kwargs.get('host')
|
|
context = neutron_context.get_admin_context()
|
|
l3plugin = manager.NeutronManager.get_service_plugins()[
|
|
plugin_constants.L3_ROUTER_NAT]
|
|
if not l3plugin:
|
|
routers = {}
|
|
LOG.error(_('No plugin for L3 routing registered! Will reply '
|
|
'to l3 agent with empty router dictionary.'))
|
|
elif utils.is_extension_supported(
|
|
l3plugin, constants.L3_AGENT_SCHEDULER_EXT_ALIAS):
|
|
if cfg.CONF.router_auto_schedule:
|
|
l3plugin.auto_schedule_routers(context, host, router_ids)
|
|
routers = l3plugin.list_active_sync_routers_on_active_l3_agent(
|
|
context, host, router_ids)
|
|
else:
|
|
routers = l3plugin.get_sync_data(context, router_ids)
|
|
plugin = manager.NeutronManager.get_plugin()
|
|
if utils.is_extension_supported(
|
|
plugin, constants.PORT_BINDING_EXT_ALIAS):
|
|
self._ensure_host_set_on_ports(context, plugin, host, routers)
|
|
LOG.debug(_("Routers returned to l3 agent:\n %s"),
|
|
jsonutils.dumps(routers, indent=5))
|
|
return routers
|
|
|
|
def _ensure_host_set_on_ports(self, context, plugin, host, routers):
|
|
for router in routers:
|
|
LOG.debug(_("Checking router: %(id)s for host: %(host)s"),
|
|
{'id': router['id'], 'host': host})
|
|
if router.get('gw_port') and router.get('distributed'):
|
|
self._ensure_host_set_on_port(context, plugin,
|
|
router.get('gw_port_host'),
|
|
router.get('gw_port'),
|
|
router['id'])
|
|
for p in router.get(constants.SNAT_ROUTER_INTF_KEY, []):
|
|
self._ensure_host_set_on_port(context, plugin,
|
|
router.get('gw_port_host'),
|
|
p, router['id'])
|
|
else:
|
|
self._ensure_host_set_on_port(context, plugin, host,
|
|
router.get('gw_port'),
|
|
router['id'])
|
|
for interface in router.get(constants.INTERFACE_KEY, []):
|
|
self._ensure_host_set_on_port(context, plugin, host,
|
|
interface, router['id'])
|
|
|
|
def _ensure_host_set_on_port(self, context, plugin, host, port,
|
|
router_id=None):
|
|
if (port and
|
|
(port.get('device_owner') !=
|
|
constants.DEVICE_OWNER_DVR_INTERFACE and
|
|
port.get(portbindings.HOST_ID) != host or
|
|
port.get(portbindings.VIF_TYPE) ==
|
|
portbindings.VIF_TYPE_BINDING_FAILED)):
|
|
# All ports, including ports created for SNAT'ing for
|
|
# DVR are handled here
|
|
plugin.update_port(context, port['id'],
|
|
{'port': {portbindings.HOST_ID: host}})
|
|
elif (port and
|
|
port.get('device_owner') ==
|
|
constants.DEVICE_OWNER_DVR_INTERFACE):
|
|
# Ports that are DVR interfaces have multiple bindings (based on
|
|
# of hosts on which DVR router interfaces are spawned). Such
|
|
# bindings are created/updated here by invoking
|
|
# update_dvr_port_binding
|
|
plugin.update_dvr_port_binding(context, port['id'],
|
|
{'port':
|
|
{portbindings.HOST_ID: host,
|
|
'device_id': router_id}
|
|
})
|
|
|
|
def get_external_network_id(self, context, **kwargs):
|
|
"""Get one external network id for l3 agent.
|
|
|
|
l3 agent expects only on external network when it performs
|
|
this query.
|
|
"""
|
|
context = neutron_context.get_admin_context()
|
|
plugin = manager.NeutronManager.get_plugin()
|
|
net_id = plugin.get_external_network_id(context)
|
|
LOG.debug(_("External network ID returned to l3 agent: %s"),
|
|
net_id)
|
|
return net_id
|
|
|
|
def update_floatingip_statuses(self, context, router_id, fip_statuses):
|
|
"""Update operational status for a floating IP."""
|
|
l3_plugin = manager.NeutronManager.get_service_plugins()[
|
|
plugin_constants.L3_ROUTER_NAT]
|
|
with context.session.begin(subtransactions=True):
|
|
for (floatingip_id, status) in fip_statuses.iteritems():
|
|
LOG.debug(_("New status for floating IP %(floatingip_id)s: "
|
|
"%(status)s"), {'floatingip_id': floatingip_id,
|
|
'status': status})
|
|
try:
|
|
l3_plugin.update_floatingip_status(context,
|
|
floatingip_id,
|
|
status)
|
|
except l3.FloatingIPNotFound:
|
|
LOG.debug(_("Floating IP: %s no longer present."),
|
|
floatingip_id)
|
|
# Find all floating IPs known to have been the given router
|
|
# for which an update was not received. Set them DOWN mercilessly
|
|
# This situation might occur for some asynchronous backends if
|
|
# notifications were missed
|
|
known_router_fips = l3_plugin.get_floatingips(
|
|
context, {'last_known_router_id': [router_id]})
|
|
# Consider only floating ips which were disassociated in the API
|
|
# FIXME(salv-orlando): Filtering in code should be avoided.
|
|
# the plugin should offer a way to specify a null filter
|
|
fips_to_disable = (fip['id'] for fip in known_router_fips
|
|
if not fip['router_id'])
|
|
for fip_id in fips_to_disable:
|
|
l3_plugin.update_floatingip_status(
|
|
context, fip_id, constants.FLOATINGIP_STATUS_DOWN)
|
|
|
|
def get_ports_by_subnet(self, context, **kwargs):
|
|
"""DVR: RPC called by dvr-agent to get all ports for subnet."""
|
|
subnet_id = kwargs.get('subnet_id')
|
|
LOG.debug("DVR: subnet_id: %s", subnet_id)
|
|
filters = {'fixed_ips': {'subnet_id': [subnet_id]}}
|
|
plugin = manager.NeutronManager.get_plugin()
|
|
return plugin.get_ports(context, filters=filters)
|
|
|
|
def get_agent_gateway_port(self, context, **kwargs):
|
|
"""Get Agent Gateway port for FIP.
|
|
|
|
l3 agent expects an Agent Gateway Port to be returned
|
|
for this query.
|
|
"""
|
|
network_id = kwargs.get('network_id')
|
|
host = kwargs.get('host')
|
|
admin_ctx = neutron_context.get_admin_context()
|
|
plugin = manager.NeutronManager.get_plugin()
|
|
l3plugin = manager.NeutronManager.get_service_plugins()[
|
|
plugin_constants.L3_ROUTER_NAT]
|
|
agent_port = l3plugin.create_fip_agent_gw_port_if_not_exists(
|
|
admin_ctx, network_id, host)
|
|
self._ensure_host_set_on_port(admin_ctx, plugin, host,
|
|
agent_port)
|
|
LOG.debug('Agent Gateway port returned : %(agent_port)s with '
|
|
'host %(host)s', {'agent_port': agent_port,
|
|
'host': host})
|
|
return agent_port
|
|
|
|
def get_snat_router_interface_ports(self, context, **kwargs):
|
|
"""Get SNAT serviced Router Port List.
|
|
|
|
The Service Node that hosts the SNAT service requires
|
|
the ports to service the router interfaces.
|
|
This function will check if any available ports, if not
|
|
it will create ports on the routers interfaces and
|
|
will send a list to the L3 agent.
|
|
"""
|
|
router_id = kwargs.get('router_id')
|
|
host = kwargs.get('host')
|
|
admin_ctx = neutron_context.get_admin_context()
|
|
plugin = manager.NeutronManager.get_plugin()
|
|
l3plugin = manager.NeutronManager.get_service_plugins()[
|
|
plugin_constants.L3_ROUTER_NAT]
|
|
snat_port_list = l3plugin.create_snat_intf_port_list_if_not_exists(
|
|
admin_ctx, router_id)
|
|
for p in snat_port_list:
|
|
self._ensure_host_set_on_port(admin_ctx, plugin, host, p)
|
|
LOG.debug('SNAT interface ports returned : %(snat_port_list)s '
|
|
'and on host %(host)s', {'snat_port_list': snat_port_list,
|
|
'host': host})
|
|
return snat_port_list
|