512 lines
23 KiB
Python
512 lines
23 KiB
Python
# Copyright 2015 VMware, Inc.
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#
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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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from networking_l2gw.db.l2gateway import l2gateway_db
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from networking_l2gw.services.l2gateway.common import constants as l2gw_const
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from networking_l2gw.services.l2gateway import exceptions as l2gw_exc
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from oslo_config import cfg
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from oslo_db import exception as db_exc
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from oslo_log import log as logging
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from oslo_utils import excutils
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from oslo_utils import uuidutils
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from neutron_lib.api.definitions import provider_net as providernet
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from neutron_lib.callbacks import events
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from neutron_lib.callbacks import registry
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from neutron_lib.callbacks import resources
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from neutron_lib import constants
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from neutron_lib import context
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from neutron_lib.db import api as db_api
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from neutron_lib import exceptions as n_exc
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from neutron_lib.plugins import directory
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from neutron_lib.plugins import utils as plugin_utils
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from vmware_nsx._i18n import _
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from vmware_nsx.common import utils as nsx_utils
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from vmware_nsx.db import db as nsx_db
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from vmware_nsx.extensions import projectpluginmap
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from vmware_nsxlib.v3 import exceptions as nsxlib_exc
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from vmware_nsxlib.v3 import nsx_constants
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from vmware_nsxlib.v3 import utils as nsxlib_utils
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LOG = logging.getLogger(__name__)
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class _NotUniqueL2GW(Exception):
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"""Raised if validation of default L2 GW uniqueness fails."""
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class NsxV3Driver(l2gateway_db.L2GatewayMixin):
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"""Class to handle API calls for L2 gateway and NSXv3 backend."""
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gateway_resource = l2gw_const.GATEWAY_RESOURCE_NAME
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def __init__(self, plugin):
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super(NsxV3Driver, self).__init__()
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self._plugin = plugin
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LOG.debug("Starting service plugin for NSX L2Gateway")
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self.subscribe_callback_notifications()
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LOG.debug("Initialization complete for NSXv3 driver for "
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"L2 gateway service plugin.")
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self.__core_plugin = None
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@property
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def _core_plugin(self):
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if not self.__core_plugin:
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self.__core_plugin = directory.get_plugin()
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if self.__core_plugin.is_tvd_plugin():
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self.__core_plugin = self.__core_plugin.get_plugin_by_type(
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projectpluginmap.NsxPlugins.NSX_T)
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return self.__core_plugin
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def subscribe_callback_notifications(self):
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registry.subscribe(self._prevent_l2gw_port_delete, resources.PORT,
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events.BEFORE_DELETE)
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registry.subscribe(self._ensure_default_l2_gateway, resources.PROCESS,
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events.BEFORE_SPAWN)
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def _find_default_l2_gateway(self, admin_ctx, def_device_id):
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for l2gateway in self._get_l2_gateways(admin_ctx):
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if l2gateway['devices'][0]['device_name'] == def_device_id:
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return l2gateway
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@nsxlib_utils.retry_random_upon_exception(_NotUniqueL2GW, max_attempts=10)
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def _create_default_l2_gateway(self, admin_ctx, l2gw_dict, def_device_id):
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LOG.debug("Creating default layer-2 gateway with: %s", l2gw_dict)
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def_l2gw = super(NsxV3Driver, self).create_l2_gateway(admin_ctx,
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l2gw_dict)
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# Verify that no other instance of neutron-server had the same
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# brilliant idea...
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l2gateways = self._get_l2_gateways(admin_ctx)
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for l2gateway in l2gateways:
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# Since we ensure L2 gateway is created with only 1 device, we use
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# the first device in the list.
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if l2gateway['devices'][0]['device_name'] == def_device_id:
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if l2gateway['id'] == def_l2gw['id']:
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# Nothing to worry about, that's our gateway
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continue
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LOG.info("Default L2 gateway is already created with "
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"id %s, deleting L2 gateway with id %s",
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l2gateway['id'], def_l2gw['id'])
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# Commit suicide!
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self.validate_l2_gateway_for_delete(
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admin_ctx, def_l2gw)
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# We can be sure the gateway is not in use...
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super(NsxV3Driver, self).delete_l2_gateway(
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admin_ctx, def_l2gw['id'])
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# The operation should be retried to avoid the situation where
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# every instance deletes the gateway it created
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raise _NotUniqueL2GW
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return def_l2gw
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def _get_bridge_vlan_tz_id(self, bep_data):
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nsxlib = self._core_plugin.nsxlib
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# Edge cluster Id is mandatory, do not fear KeyError
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edge_cluster_id = bep_data['edge_cluster_id']
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member_indexes = bep_data.get('edge_cluster_member_indexes', [])
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# NSX should not allow bridge endpoint profiles attached to
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# non-existing edge clusters
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edge_cluster = nsxlib.edge_cluster.get(edge_cluster_id)
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member_map = dict((member['member_index'],
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member['transport_node_id'])
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for member in edge_cluster['members'])
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# By default consider all transport nodes in the cluster for
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# retrieving the VLAN transprtzone
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tn_ids = member_map.values()
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if member_indexes:
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try:
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tn_ids = [member_map[idx] for idx in member_indexes]
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except KeyError:
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LOG.warning("Invalid member indexes specified in bridge "
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"endpoint profile: %(bep_id)s: %(indexes)s",
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{'bep_id': bep_data['id'],
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'indexes': member_indexes})
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# Retrieve VLAN transport zones
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vlan_transport_zones = nsxlib.search_all_resource_by_attributes(
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nsxlib.transport_zone.resource_type,
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transport_type='VLAN')
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vlan_tz_map = dict((vlan_tz['id'], [])
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for vlan_tz in vlan_transport_zones)
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for tn_id in tn_ids:
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tn_data = nsxlib.transport_node.get(tn_id)
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for tz_endpoint in tn_data.get('transport_zone_endpoints', []):
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tz_id = tz_endpoint['transport_zone_id']
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if tz_id in vlan_tz_map:
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vlan_tz_map[tz_id].append(tn_id)
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# Find the VLAN transport zone that is used by all transport nodes
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results = []
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for (tz_id, nodes) in vlan_tz_map.items():
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if set(nodes) != set(tn_ids):
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continue
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results.append(tz_id)
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return results
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def _ensure_default_l2_gateway(self, resource, event,
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trigger, payload=None):
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"""
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Create a default logical L2 gateway.
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Create a logical L2 gateway in the neutron database for the
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default bridge endpoint profile, if specified in the configuration.
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Ensure only one gateway is configured in presence of multiple
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neutron servers.
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"""
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if cfg.CONF.nsx_v3.default_bridge_cluster:
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LOG.warning("Attention! The default_bridge_cluster option is "
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"still set to %s. This option won't have any effect "
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"as L2 gateways based on bridge clusters are not "
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"implemented anymore",
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cfg.CONF.nsx_v3.default_bridge_cluster)
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def_bep = cfg.CONF.nsx_v3.default_bridge_endpoint_profile
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# Return if no default_endpoint_profile set in config
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if not def_bep:
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LOG.info("NSX Default bridge endpoint profile not set. "
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"Default L2 gateway will not be processed.")
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return
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admin_ctx = context.get_admin_context()
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nsx_bep_client = self._core_plugin.nsxlib.bridge_endpoint_profile
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bep_id = nsx_bep_client.get_id_by_name_or_id(def_bep)
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def_l2gw = self._find_default_l2_gateway(admin_ctx, bep_id)
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# If there is already an existing gateway, use that one
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if def_l2gw:
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LOG.info("A default L2 gateway for bridge endpoint profile "
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"%(bep_id)s already exists. Reusing L2 gateway "
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"%(def_l2gw_id)s)",
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{'bep_id': bep_id, 'def_l2gw_id': def_l2gw['id']})
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return def_l2gw
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bep_data = nsx_bep_client.get(bep_id)
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vlan_tzs = self._get_bridge_vlan_tz_id(bep_data)
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if not vlan_tzs:
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LOG.info("No NSX VLAN transport zone could be used for bridge "
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"endpoint profile: %s. Default L2 gateway will not "
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"be processed", bep_id)
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return
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# TODO(salv-orlando): Implement support for multiple VLAN TZ
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vlan_tz = vlan_tzs[0]
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if len(vlan_tzs) > 1:
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LOG.info("The NSX L2 gateway driver currenly supports a single "
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"VLAN transport zone for bridging, but %(num_tz)d "
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"were specified. Transport zone %(tz)s will be used "
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"for L2 gateways",
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{'num_tz': len(vlan_tzs), 'tz': vlan_tz})
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device = {'device_name': bep_id,
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'interfaces': [{'name': vlan_tz}]}
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# TODO(asarfaty): Add a default v3 tenant-id to allow TVD filtering
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l2gw_dict = {self.gateway_resource: {
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'name': 'default-nsxedge-l2gw',
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'devices': [device]}}
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self._create_default_l2_gateway(admin_ctx, l2gw_dict, bep_id)
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return def_l2gw
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def _prevent_l2gw_port_delete(self, resource, event,
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trigger, payload=None):
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context = payload.context
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port_id = payload.resource_id
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port_check = payload.metadata['port_check']
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if port_check:
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self.prevent_l2gw_port_deletion(context, port_id)
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def _validate_device_list(self, devices, check_backend=True):
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# In NSXv3, one L2 gateway is mapped to one bridge endpoint profle.
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# So we expect only one device to be configured as part of
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# a L2 gateway resource. The name of the device must be the bridge
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# endpoint profile UUID.
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if len(devices) != 1:
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msg = _("Only a single device is supported by the NSX L2"
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"gateway driver")
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raise n_exc.InvalidInput(error_message=msg)
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dev_name = devices[0]['device_name']
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if not uuidutils.is_uuid_like(dev_name):
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msg = _("Device name must be configured with a UUID")
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raise n_exc.InvalidInput(error_message=msg)
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# Ensure the L2GW device is a valid bridge endpoint profile in NSX
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if check_backend:
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try:
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self._core_plugin.nsxlib.bridge_endpoint_profile.get(
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dev_name)
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except nsxlib_exc.ResourceNotFound:
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msg = _("Could not find Bridge Endpoint Profile for L2 "
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"gateway device %s on NSX backend") % dev_name
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LOG.error(msg)
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raise n_exc.InvalidInput(error_message=msg)
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# One L2 gateway must have only one interface defined.
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interfaces = devices[0].get(l2gw_const.IFACE_NAME_ATTR)
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if len(interfaces) > 1:
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msg = _("Maximum of one interface is supported by the NSX L2 "
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"gateway driver")
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raise n_exc.InvalidInput(error_message=msg)
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def create_l2_gateway(self, context, l2_gateway):
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"""Create a logical L2 gateway."""
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gw = l2_gateway[self.gateway_resource]
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devices = gw['devices']
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self._validate_device_list(devices)
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def create_l2_gateway_precommit(self, context, l2_gateway):
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pass
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def create_l2_gateway_postcommit(self, context, l2_gateway):
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pass
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def update_l2_gateway_precommit(self, context, l2_gateway):
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pass
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def update_l2_gateway_postcommit(self, context, l2_gateway):
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pass
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def delete_l2_gateway(self, context, l2_gateway_id):
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pass
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def delete_l2_gateway_precommit(self, context, l2_gateway_id):
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pass
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def delete_l2_gateway_postcommit(self, context, l2_gateway_id):
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pass
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def _validate_network(self, context, network_id):
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network = self._core_plugin.get_network(context, network_id)
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network_type = network.get(providernet.NETWORK_TYPE)
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# If network is a provider network, verify whether it is of type GENEVE
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if network_type and network_type != nsx_utils.NsxV3NetworkTypes.GENEVE:
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msg = (_("Unsupported network type %s for L2 gateway connection") %
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network_type)
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raise n_exc.InvalidInput(error_message=msg)
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def _validate_segment_id(self, seg_id):
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if not seg_id:
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raise l2gw_exc.L2GatewaySegmentationRequired
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return plugin_utils.is_valid_vlan_tag(seg_id)
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def create_l2_gateway_connection(self, context, l2_gateway_connection):
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gw_connection = l2_gateway_connection.get(self.connection_resource)
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network_id = gw_connection.get(l2gw_const.NETWORK_ID)
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self._validate_network(context, network_id)
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def _get_bep(self, context, l2gw_id):
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# In NSXv3, there will be only one device configured per L2 gateway.
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# The name of the device shall carry the bridge endpoint profile id.
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devices = self._get_l2_gateway_devices(context, l2gw_id)
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return devices[0].get('device_name')
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def _get_conn_parameters(self, context, gw_connection):
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"""Return interface and segmenantion id for a connection. """
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if not gw_connection:
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return
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l2gw_id = gw_connection.get(l2gw_const.L2GATEWAY_ID)
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seg_id = gw_connection.get(l2gw_const.SEG_ID)
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devices = self._get_l2_gateway_devices(context, l2gw_id)
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# TODO(salv-orlando): support more than a single interface
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interface = self._get_l2_gw_interfaces(context, devices[0]['id'])[0]
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if not seg_id:
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# Seg-id was not passed as part of connection-create. Retrieve
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# seg-id from L2 gateway's interface.
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seg_id = interface.get('segmentation_id')
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return interface['interface_name'], seg_id
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def create_l2_gateway_connection_precommit(self, context, gw_connection):
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"""Validate the L2 gateway connection
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Do not allow another connection with the same bride cluster and seg_id
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"""
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admin_ctx = context.elevated()
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nsxlib = self._core_plugin.nsxlib
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l2gw_id = gw_connection.get(l2gw_const.L2GATEWAY_ID)
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devices = self._get_l2_gateway_devices(context, l2gw_id)
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bep_id = devices[0].get('device_name')
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# Check for bridge endpoint profile existence
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# if bridge endpoint profile is not found, this is likely an old
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# connection, fail with error.
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try:
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nsxlib.bridge_endpoint_profile.get_id_by_name_or_id(bep_id)
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except nsxlib_exc.ManagerError as e:
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msg = (_("Error while retrieving bridge endpoint profile "
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"%(bep_id)s from NSX backend. Check that the profile "
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"exits and there are not multiple profiles with "
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"the given name. Exception: %(exc)s") %
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{'bep_id': bep_id, 'exc': e})
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raise n_exc.InvalidInput(error_message=msg)
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interface_name, seg_id = self._get_conn_parameters(
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admin_ctx, gw_connection)
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try:
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# Use search API for listing bridge endpoints on NSX for provided
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# VLAN id, transport zone id, and Bridge endpoint profile
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endpoints = nsxlib.search_all_resource_by_attributes(
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nsxlib.bridge_endpoint.resource_type,
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bridge_endpoint_profile_id=bep_id,
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vlan_transport_zone_id=interface_name,
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vlan=seg_id)
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endpoint_map = dict((endpoint['id'],
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endpoint['bridge_endpoint_profile_id'])
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for endpoint in endpoints)
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except nsxlib_exc.ManagerError as e:
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msg = (_("Error while retrieving endpoints for bridge endpoint "
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"profile %(bep_id)s s from NSX backend. "
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"Exception: %(exc)s") % {'bep_id': bep_id, 'exc': e})
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raise n_exc.InvalidInput(error_message=msg)
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# get all bridge endpoint ports
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with db_api.CONTEXT_WRITER.using(admin_ctx):
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port_filters = {'device_owner': [nsx_constants.BRIDGE_ENDPOINT]}
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ports = self._core_plugin.get_ports(
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admin_ctx, filters=port_filters)
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for port in ports:
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device_id = port.get('device_id')
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if endpoint_map.get(device_id) == bep_id:
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# This device is using the same vlan id and bridge endpoint
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# profile as the one requested. Not ok.
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msg = (_("Cannot create multiple connections with the "
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"same segmentation id %(seg_id)s for bridge "
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"endpoint profile %(bep_id)s") %
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{'seg_id': seg_id,
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'bep_id': bep_id})
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raise n_exc.InvalidInput(error_message=msg)
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def create_l2_gateway_connection_postcommit(self, context, gw_connection):
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"""Create a L2 gateway connection on the backend"""
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nsxlib = self._core_plugin.nsxlib
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l2gw_id = gw_connection.get(l2gw_const.L2GATEWAY_ID)
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network_id = gw_connection.get(l2gw_const.NETWORK_ID)
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device_name = self._get_bep(context, l2gw_id)
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interface_name, seg_id = self._get_conn_parameters(
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context, gw_connection)
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self._validate_segment_id(seg_id)
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tenant_id = gw_connection['tenant_id']
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if context.is_admin and not tenant_id:
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tenant_id = context.tenant_id
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gw_connection['tenant_id'] = tenant_id
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try:
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tags = nsxlib.build_v3_tags_payload(
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gw_connection, resource_type='os-neutron-l2gw-id',
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project_name=context.tenant_name)
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bridge_endpoint = nsxlib.bridge_endpoint.create(
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device_name=device_name,
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vlan_transport_zone_id=interface_name,
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vlan_id=seg_id,
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tags=tags)
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except nsxlib_exc.ManagerError as e:
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LOG.exception("Unable to create bridge endpoint. "
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"Exception is %s", e)
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raise l2gw_exc.L2GatewayServiceDriverError(
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method='create_l2_gateway_connection_postcommit')
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port_dict = {'port': {
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'name': 'l2gw-conn-%s-%s' % (
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l2gw_id, seg_id),
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'tenant_id': tenant_id,
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'network_id': network_id,
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'mac_address': constants.ATTR_NOT_SPECIFIED,
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'admin_state_up': True,
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'fixed_ips': [],
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'device_id': bridge_endpoint['id'],
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'device_owner': nsx_constants.BRIDGE_ENDPOINT}}
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try:
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#TODO(abhiraut): Consider adding UT for port check once UTs are
|
|
# refactored
|
|
port = self._core_plugin.create_port(context, port_dict,
|
|
l2gw_port_check=True)
|
|
# Deallocate IP address from the port.
|
|
for fixed_ip in port.get('fixed_ips', []):
|
|
self._core_plugin._delete_ip_allocation(context, network_id,
|
|
fixed_ip['subnet_id'],
|
|
fixed_ip['ip_address'])
|
|
LOG.debug("IP addresses deallocated on port %s", port['id'])
|
|
except (nsxlib_exc.ManagerError,
|
|
n_exc.NeutronException) as e:
|
|
with excutils.save_and_reraise_exception():
|
|
LOG.exception("Unable to create L2 gateway port, "
|
|
"rolling back changes on backend: %s", e)
|
|
self._core_plugin.nsxlib.bridge_endpoint.delete(
|
|
bridge_endpoint['id'])
|
|
super(NsxV3Driver,
|
|
self).delete_l2_gateway_connection(
|
|
context,
|
|
gw_connection['id'])
|
|
|
|
try:
|
|
# Update neutron's database with the mappings.
|
|
nsx_db.add_l2gw_connection_mapping(
|
|
session=context.session,
|
|
connection_id=gw_connection['id'],
|
|
bridge_endpoint_id=bridge_endpoint['id'],
|
|
port_id=port['id'])
|
|
except db_exc.DBError:
|
|
with excutils.save_and_reraise_exception():
|
|
LOG.exception("Unable to add L2 gateway connection "
|
|
"mappings for %(conn_id)s on network "
|
|
"%(net_id)s. rolling back changes.",
|
|
{'conn_id': gw_connection['id'],
|
|
'net_id': network_id})
|
|
self._core_plugin.nsxlib.bridge_endpoint.delete(
|
|
bridge_endpoint['id'])
|
|
super(NsxV3Driver,
|
|
self).delete_l2_gateway_connection(
|
|
context,
|
|
gw_connection['id'])
|
|
return gw_connection
|
|
|
|
def delete_l2_gateway_connection_postcommit(self, context, gw_connection):
|
|
pass
|
|
|
|
def delete_l2_gateway_connection_precommit(self, context, gw_connection):
|
|
pass
|
|
|
|
def delete_l2_gateway_connection(self, context, gw_connection):
|
|
"""Delete a L2 gateway connection."""
|
|
conn_mapping = nsx_db.get_l2gw_connection_mapping(
|
|
session=context.session,
|
|
connection_id=gw_connection)
|
|
if not conn_mapping:
|
|
LOG.error("Unable to delete gateway connection %(id)s: mapping "
|
|
"not found", {'id': gw_connection})
|
|
# Do not block the deletion
|
|
return
|
|
bridge_endpoint_id = conn_mapping.get('bridge_endpoint_id')
|
|
# Delete the logical port from the bridge endpoint.
|
|
self._core_plugin.delete_port(context=context,
|
|
port_id=conn_mapping.get('port_id'),
|
|
l2gw_port_check=False)
|
|
try:
|
|
self._core_plugin.nsxlib.bridge_endpoint.delete(bridge_endpoint_id)
|
|
except nsxlib_exc.ManagerError as e:
|
|
LOG.exception("Unable to delete bridge endpoint %(id)s on the "
|
|
"backend due to exc: %(exc)s",
|
|
{'id': bridge_endpoint_id, 'exc': e})
|
|
raise l2gw_exc.L2GatewayServiceDriverError(
|
|
method='delete_l2_gateway_connection')
|
|
|
|
def prevent_l2gw_port_deletion(self, context, port_id):
|
|
"""Prevent core plugin from deleting L2 gateway port."""
|
|
try:
|
|
port = self._core_plugin.get_port(context, port_id)
|
|
except n_exc.PortNotFound:
|
|
return
|
|
if port['device_owner'] == nsx_constants.BRIDGE_ENDPOINT:
|
|
reason = _("has device owner %s") % port['device_owner']
|
|
raise n_exc.ServicePortInUse(port_id=port_id, reason=reason)
|
|
|
|
def add_port_mac(self, context, port_dict):
|
|
"""Process a created Neutron port."""
|
|
pass
|
|
|
|
def delete_port_mac(self, context, port):
|
|
"""Process a deleted Neutron port."""
|
|
pass
|