684 lines
31 KiB
Python
684 lines
31 KiB
Python
# Copyright 2016 Hewlett Packard Enterprise Development, LP
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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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import copy
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from keystoneauth1 import loading as ks_loading
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import netaddr
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from neutron_lib.api.definitions import ip_allocation as ipalloc_apidef
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from neutron_lib.api.definitions import l2_adjacency as l2adj_apidef
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from neutron_lib.api.definitions import network as net_def
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from neutron_lib.api.definitions import port as port_def
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from neutron_lib.api.definitions import segment as seg_apidef
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from neutron_lib.api.definitions import segments_peer_subnet_host_routes
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from neutron_lib.api.definitions import standard_attr_segment
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from neutron_lib.api.definitions import subnet as subnet_def
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from neutron_lib.api.definitions import subnet_segmentid_writable
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from neutron_lib.api import validators
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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.db import resource_extend
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from neutron_lib import exceptions as n_exc
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from neutron_lib.exceptions import placement as placement_exc
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from neutron_lib.placement import client as placement_client
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from neutron_lib.plugins import directory
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from novaclient import client as nova_client
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from novaclient import exceptions as nova_exc
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from oslo_config import cfg
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from oslo_log import log
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from oslo_utils import excutils
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from neutron._i18n import _
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from neutron.common import ipv6_utils
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from neutron.extensions import segment
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from neutron.notifiers import batch_notifier
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from neutron.objects import network as net_obj
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from neutron.objects import ports as ports_obj
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from neutron.objects import subnet as subnet_obj
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from neutron.services.segments import db
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from neutron.services.segments import exceptions
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LOG = log.getLogger(__name__)
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NOVA_API_VERSION = '2.41'
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IPV4_RESOURCE_CLASS = 'IPV4_ADDRESS'
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SEGMENT_NAME_STUB = 'Neutron segment id %s'
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MAX_INVENTORY_UPDATE_RETRIES = 10
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@resource_extend.has_resource_extenders
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@registry.has_registry_receivers
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class Plugin(db.SegmentDbMixin, segment.SegmentPluginBase):
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_instance = None
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supported_extension_aliases = [seg_apidef.ALIAS,
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ipalloc_apidef.ALIAS,
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l2adj_apidef.ALIAS,
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standard_attr_segment.ALIAS,
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subnet_segmentid_writable.ALIAS,
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segments_peer_subnet_host_routes.ALIAS]
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__native_pagination_support = True
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__native_sorting_support = True
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__filter_validation_support = True
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def __init__(self):
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self.nova_updater = NovaSegmentNotifier()
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self.segment_host_routes = SegmentHostRoutes()
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@staticmethod
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@resource_extend.extends([net_def.COLLECTION_NAME])
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def _extend_network_dict_binding(network_res, network_db):
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if not directory.get_plugin('segments'):
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return
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# TODO(carl_baldwin) Make this work with service subnets when
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# it's a thing.
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is_adjacent = (not network_db.subnets or
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not network_db.subnets[0].segment_id)
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network_res[l2adj_apidef.L2_ADJACENCY] = is_adjacent
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@staticmethod
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@resource_extend.extends([subnet_def.COLLECTION_NAME])
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def _extend_subnet_dict_binding(subnet_res, subnet_db):
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subnet_res['segment_id'] = subnet_db.get('segment_id')
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@staticmethod
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@resource_extend.extends([port_def.COLLECTION_NAME])
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def _extend_port_dict_binding(port_res, port_db):
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if not directory.get_plugin('segments'):
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return
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value = ipalloc_apidef.IP_ALLOCATION_IMMEDIATE
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if port_db.get('ip_allocation'):
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value = port_db.get('ip_allocation')
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port_res[ipalloc_apidef.IP_ALLOCATION] = value
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@classmethod
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def get_instance(cls):
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if cls._instance is None:
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cls._instance = cls()
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return cls._instance
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@registry.receives(resources.SEGMENT, [events.BEFORE_DELETE])
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def _prevent_segment_delete_with_subnet_associated(
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self, resource, event, trigger, payload=None):
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"""Raise exception if there are any subnets associated with segment."""
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if payload.metadata.get(db.FOR_NET_DELETE):
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# don't check if this is a part of a network delete operation
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return
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segment_id = payload.resource_id
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subnets = subnet_obj.Subnet.get_objects(payload.context,
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segment_id=segment_id)
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subnet_ids = [s.id for s in subnets]
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if subnet_ids:
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reason = _("The segment is still associated with subnet(s) "
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"%s") % ", ".join(subnet_ids)
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raise exceptions.SegmentInUse(segment_id=segment_id,
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reason=reason)
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@registry.receives(
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resources.SUBNET, [events.PRECOMMIT_DELETE_ASSOCIATIONS])
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def _validate_auto_address_subnet_delete(self, resource, event, trigger,
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payload):
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context = payload.context
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subnet = subnet_obj.Subnet.get_object(context, id=payload.resource_id)
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is_auto_addr_subnet = ipv6_utils.is_auto_address_subnet(subnet)
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if not is_auto_addr_subnet or subnet.segment_id is None:
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return
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ports = ports_obj.Port.get_ports_allocated_by_subnet_id(context,
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subnet.id)
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for port in ports:
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fixed_ips = [f for f in port.fixed_ips if f.subnet_id != subnet.id]
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if len(fixed_ips) != 0:
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continue
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LOG.info("Found port %(port_id)s, with IP auto-allocation "
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"only on subnet %(subnet)s which is associated with "
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"segment %(segment_id)s, cannot delete",
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{'port_id': port.id,
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'subnet': subnet.id,
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'segment_id': subnet.segment_id})
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raise n_exc.SubnetInUse(subnet_id=subnet.id)
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class Event(object):
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def __init__(self, method, segment_ids, total=None, reserved=None,
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segment_host_mappings=None, host=None):
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self.method = method
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if isinstance(segment_ids, set):
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self.segment_ids = segment_ids
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else:
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self.segment_id = segment_ids
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self.total = total
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self.reserved = reserved
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self.segment_host_mappings = segment_host_mappings
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self.host = host
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@registry.has_registry_receivers
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class NovaSegmentNotifier(object):
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def __init__(self):
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self.p_client, self.n_client = self._get_clients()
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self.batch_notifier = batch_notifier.BatchNotifier(
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cfg.CONF.send_events_interval, self._send_notifications)
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def _get_clients(self):
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p_client = placement_client.PlacementAPIClient(
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cfg.CONF, openstack_api_version='placement 1.1')
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n_auth = ks_loading.load_auth_from_conf_options(cfg.CONF, 'nova')
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n_session = ks_loading.load_session_from_conf_options(
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cfg.CONF,
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'nova',
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auth=n_auth)
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extensions = [
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ext for ext in nova_client.discover_extensions(NOVA_API_VERSION)
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if ext.name == "server_external_events"]
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n_client = nova_client.Client(
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NOVA_API_VERSION,
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session=n_session,
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region_name=cfg.CONF.nova.region_name,
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endpoint_type=cfg.CONF.nova.endpoint_type,
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extensions=extensions)
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return p_client, n_client
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def _send_notifications(self, batched_events):
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for event in batched_events:
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try:
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event.method(event)
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except placement_exc.PlacementEndpointNotFound:
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LOG.debug('Placement API was not found when trying to '
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'update routed networks IPv4 inventories')
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return
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def _notify_subnet(self, context, subnet, segment_id):
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total, reserved = self._calculate_inventory_total_and_reserved(subnet)
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if total:
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segment_host_mappings = net_obj.SegmentHostMapping.get_objects(
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context, segment_id=segment_id)
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self.batch_notifier.queue_event(Event(
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self._create_or_update_nova_inventory, segment_id, total=total,
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reserved=reserved,
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segment_host_mappings=segment_host_mappings))
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@registry.receives(resources.SUBNET, [events.AFTER_CREATE])
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def _notify_subnet_created(self, resource, event, trigger, context,
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subnet, **kwargs):
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segment_id = subnet.get('segment_id')
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if not segment_id or subnet['ip_version'] != constants.IP_VERSION_4:
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return
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self._notify_subnet(context, subnet, segment_id)
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def _create_or_update_nova_inventory(self, event):
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try:
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self._update_nova_inventory(event)
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except placement_exc.PlacementResourceProviderNotFound:
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self._create_nova_inventory(event.segment_id, event.total,
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event.reserved,
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event.segment_host_mappings)
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def _update_nova_inventory(self, event):
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for count in range(MAX_INVENTORY_UPDATE_RETRIES):
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ipv4_inventory = self.p_client.get_inventory(event.segment_id,
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IPV4_RESOURCE_CLASS)
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if event.total:
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ipv4_inventory['total'] += event.total
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if event.reserved:
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ipv4_inventory['reserved'] += event.reserved
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try:
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self.p_client.update_resource_provider_inventory(
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event.segment_id, ipv4_inventory, IPV4_RESOURCE_CLASS)
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return
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except placement_exc.PlacementResourceProviderGenerationConflict:
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LOG.debug('Re-trying to update Nova IPv4 inventory for '
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'routed network segment: %s', event.segment_id)
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LOG.error('Failed to update Nova IPv4 inventory for routed '
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'network segment: %s', event.segment_id)
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def _get_nova_aggregate_uuid(self, aggregate):
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try:
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return aggregate.uuid
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except AttributeError:
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with excutils.save_and_reraise_exception():
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LOG.exception("uuid was not returned as part of the aggregate "
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"object which indicates that the Nova API "
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"backend does not support microversions. Ensure "
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"that the compute endpoint in the service "
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"catalog points to the v2.1 API.")
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def _create_nova_inventory(self, segment_id, total, reserved,
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segment_host_mappings):
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name = SEGMENT_NAME_STUB % segment_id
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resource_provider = {'name': name, 'uuid': segment_id}
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self.p_client.create_resource_provider(resource_provider)
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aggregate = self.n_client.aggregates.create(name, None)
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aggregate_uuid = self._get_nova_aggregate_uuid(aggregate)
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self.p_client.associate_aggregates(segment_id, [aggregate_uuid])
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for mapping in segment_host_mappings:
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self.n_client.aggregates.add_host(aggregate.id, mapping.host)
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ipv4_inventory = {
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IPV4_RESOURCE_CLASS: {
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'total': total, 'reserved': reserved, 'min_unit': 1,
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'max_unit': 1, 'step_size': 1, 'allocation_ratio': 1.0,
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}
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}
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self.p_client.update_resource_provider_inventories(
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segment_id, ipv4_inventory)
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def _calculate_inventory_total_and_reserved(self, subnet):
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total = 0
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reserved = 0
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allocation_pools = subnet.get('allocation_pools') or []
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for pool in allocation_pools:
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total += int(netaddr.IPAddress(pool['end']) -
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netaddr.IPAddress(pool['start'])) + 1
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if total:
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if subnet.get('gateway_ip'):
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total += 1
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reserved += 1
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if subnet.get('enable_dhcp'):
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reserved += 1
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return total, reserved
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@registry.receives(resources.SUBNET, [events.AFTER_UPDATE])
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def _notify_subnet_updated(self, resource, event, trigger, context,
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subnet, original_subnet, **kwargs):
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segment_id = subnet.get('segment_id')
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original_segment_id = original_subnet.get('segment_id')
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if not segment_id or subnet['ip_version'] != constants.IP_VERSION_4:
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return
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if original_segment_id != segment_id:
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# Migration to routed network, treat as create
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self._notify_subnet(context, subnet, segment_id)
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return
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filters = {'segment_id': [segment_id],
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'ip_version': [constants.IP_VERSION_4]}
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if not subnet['allocation_pools']:
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plugin = directory.get_plugin()
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alloc_pools = [s['allocation_pools'] for s in
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plugin.get_subnets(context, filters=filters)]
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if not any(alloc_pools):
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self.batch_notifier.queue_event(Event(
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self._delete_nova_inventory, segment_id))
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return
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original_total, original_reserved = (
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self._calculate_inventory_total_and_reserved(original_subnet))
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updated_total, updated_reserved = (
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self._calculate_inventory_total_and_reserved(subnet))
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total = updated_total - original_total
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reserved = updated_reserved - original_reserved
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if total or reserved:
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segment_host_mappings = None
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if not original_subnet['allocation_pools']:
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segment_host_mappings = net_obj.SegmentHostMapping.get_objects(
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context, segment_id=segment_id)
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self.batch_notifier.queue_event(Event(
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self._create_or_update_nova_inventory, segment_id, total=total,
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reserved=reserved,
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segment_host_mappings=segment_host_mappings))
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@registry.receives(resources.SUBNET, [events.AFTER_DELETE])
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def _notify_subnet_deleted(self, resource, event, trigger, context,
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subnet, **kwargs):
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if kwargs.get(db.FOR_NET_DELETE):
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return # skip segment RP update if it is going to be deleted
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segment_id = subnet.get('segment_id')
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if not segment_id or subnet['ip_version'] != constants.IP_VERSION_4:
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return
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total, reserved = self._calculate_inventory_total_and_reserved(subnet)
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if total:
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filters = {'segment_id': [segment_id], 'ip_version': [4]}
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plugin = directory.get_plugin()
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if plugin.get_subnets_count(context, filters=filters) > 0:
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self.batch_notifier.queue_event(Event(
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self._update_nova_inventory, segment_id, total=-total,
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reserved=-reserved))
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else:
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self.batch_notifier.queue_event(Event(
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self._delete_nova_inventory, segment_id))
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def _get_aggregate_id(self, segment_id):
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try:
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aggregate_uuid = self.p_client.list_aggregates(
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segment_id)['aggregates'][0]
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except placement_exc.PlacementAggregateNotFound:
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LOG.info('Segment %s resource provider aggregate not found',
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segment_id)
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return
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for aggregate in self.n_client.aggregates.list():
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nc_aggregate_uuid = self._get_nova_aggregate_uuid(aggregate)
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if nc_aggregate_uuid == aggregate_uuid:
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return aggregate.id
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def _delete_nova_inventory(self, event):
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aggregate_id = self._get_aggregate_id(event.segment_id)
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if aggregate_id:
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aggregate = self.n_client.aggregates.get_details(aggregate_id)
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for host in aggregate.hosts:
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self.n_client.aggregates.remove_host(aggregate_id, host)
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self.n_client.aggregates.delete(aggregate_id)
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try:
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self.p_client.delete_resource_provider(event.segment_id)
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except placement_exc.PlacementClientError as exc:
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LOG.info('Segment %s resource provider not found; error: %s',
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event.segment_id, str(exc))
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@registry.receives(resources.SEGMENT_HOST_MAPPING, [events.AFTER_CREATE])
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def _notify_host_addition_to_aggregate(self, resource, event, trigger,
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payload=None):
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subnets = subnet_obj.Subnet.get_objects(
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payload.context,
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segment_id=payload.metadata.get('current_segment_ids'))
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segment_ids = {s.segment_id for s in subnets}
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self.batch_notifier.queue_event(
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Event(self._add_host_to_aggregate,
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segment_ids, host=payload.metadata.get('host')))
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def _add_host_to_aggregate(self, event):
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for segment_id in event.segment_ids:
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aggregate_id = self._get_aggregate_id(segment_id)
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if not aggregate_id:
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LOG.info('When adding host %(host)s, aggregate not found '
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'for routed network segment %(segment_id)s',
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{'host': event.host, 'segment_id': segment_id})
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continue
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try:
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self.n_client.aggregates.add_host(aggregate_id, event.host)
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except nova_exc.Conflict:
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LOG.info('Host %(host)s already exists in aggregate for '
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'routed network segment %(segment_id)s',
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{'host': event.host, 'segment_id': segment_id})
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@registry.receives(resources.PORT, [events.AFTER_CREATE])
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def _notify_port_created(self, resource, event, trigger,
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payload=None):
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# TODO(boden): refactor back into 1 method when all code is moved
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# to event payloads
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return self._notify_port_created_or_deleted(
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resource, event, trigger, payload.context, payload.latest_state)
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@registry.receives(resources.PORT, [events.AFTER_DELETE])
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def _notify_port_created_or_deleted(self, resource, event, trigger,
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context, port, **kwargs):
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if not self._does_port_require_nova_inventory_update(port):
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return
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ipv4_subnets_number, segment_id = (
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self._get_ipv4_subnets_number_and_segment_id(port, context))
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if segment_id:
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if event == events.AFTER_DELETE:
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ipv4_subnets_number = -ipv4_subnets_number
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self.batch_notifier.queue_event(
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Event(self._update_nova_inventory,
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segment_id, reserved=ipv4_subnets_number))
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@registry.receives(resources.PORT, [events.AFTER_UPDATE])
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def _notify_port_updated(self, resource, event, trigger, context,
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**kwargs):
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port = kwargs.get('port')
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original_port = kwargs.get('original_port')
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does_original_port_require_nova_inventory_update = (
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self._does_port_require_nova_inventory_update(original_port))
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|
does_port_require_nova_inventory_update = (
|
|
self._does_port_require_nova_inventory_update(port))
|
|
if not (does_original_port_require_nova_inventory_update or
|
|
does_port_require_nova_inventory_update):
|
|
return
|
|
original_port_ipv4_subnets_number, segment_id = (
|
|
self._get_ipv4_subnets_number_and_segment_id(original_port,
|
|
context))
|
|
if not segment_id:
|
|
return
|
|
port_ipv4_subnets_number = len(self._get_ipv4_subnet_ids(port))
|
|
if not does_original_port_require_nova_inventory_update:
|
|
original_port_ipv4_subnets_number = 0
|
|
if not does_port_require_nova_inventory_update:
|
|
port_ipv4_subnets_number = 0
|
|
update = port_ipv4_subnets_number - original_port_ipv4_subnets_number
|
|
if update:
|
|
self.batch_notifier.queue_event(Event(self._update_nova_inventory,
|
|
segment_id, reserved=update))
|
|
|
|
def _get_ipv4_subnets_number_and_segment_id(self, port, context):
|
|
ipv4_subnet_ids = self._get_ipv4_subnet_ids(port)
|
|
if not ipv4_subnet_ids:
|
|
return 0, None
|
|
subnet = subnet_obj.Subnet.get_object(context, id=ipv4_subnet_ids[0])
|
|
if subnet and subnet.segment_id:
|
|
return len(ipv4_subnet_ids), subnet.segment_id
|
|
|
|
return 0, None
|
|
|
|
def _does_port_require_nova_inventory_update(self, port):
|
|
device_owner = port.get('device_owner')
|
|
if (device_owner.startswith(constants.DEVICE_OWNER_COMPUTE_PREFIX) or
|
|
device_owner == constants.DEVICE_OWNER_DHCP):
|
|
return False
|
|
return True
|
|
|
|
def _get_ipv4_subnet_ids(self, port):
|
|
ipv4_subnet_ids = []
|
|
for ip in port.get('fixed_ips', []):
|
|
if netaddr.IPAddress(
|
|
ip['ip_address']).version == constants.IP_VERSION_4:
|
|
ipv4_subnet_ids.append(ip['subnet_id'])
|
|
return ipv4_subnet_ids
|
|
|
|
@registry.receives(resources.SEGMENT, [events.AFTER_DELETE])
|
|
def _notify_segment_deleted(
|
|
self, resource, event, trigger, payload=None):
|
|
if payload:
|
|
self.batch_notifier.queue_event(Event(
|
|
self._delete_nova_inventory, payload.resource_id))
|
|
|
|
|
|
@registry.has_registry_receivers
|
|
class SegmentHostRoutes(object):
|
|
|
|
def _get_subnets(self, context, network_id):
|
|
return subnet_obj.Subnet.get_objects(context, network_id=network_id)
|
|
|
|
def _count_subnets(self, context, network_id):
|
|
return subnet_obj.Subnet.count(context, network_id=network_id)
|
|
|
|
def _calculate_routed_network_host_routes(self, context, ip_version,
|
|
network_id=None, subnet_id=None,
|
|
segment_id=None,
|
|
host_routes=None,
|
|
gateway_ip=None,
|
|
old_gateway_ip=None,
|
|
deleted_cidr=None):
|
|
"""Calculate host routes for routed network.
|
|
|
|
This method is used to calculate the host routes for routed networks
|
|
both when handling the user create or update request and when making
|
|
updates to subnets on the network in response to events: AFTER_CREATE
|
|
and AFTER_DELETE.
|
|
|
|
:param ip_version: IP version (4/6).
|
|
:param network_id: Network ID.
|
|
:param subnet_id: UUID of the subnet.
|
|
:param segment_id: Segement ID associated with the subnet.
|
|
:param host_routes: Current host_routes of the subnet.
|
|
:param gateway_ip: The subnets gateway IP address.
|
|
:param old_gateway_ip: The old gateway IP address of the subnet when it
|
|
is changed on update.
|
|
:param deleted_cidr: The cidr of a deleted subnet.
|
|
:returns Host routes with routes for the other subnet's on the routed
|
|
network appended unless a route to the destination already
|
|
exists.
|
|
"""
|
|
if host_routes is None:
|
|
host_routes = []
|
|
dest_ip_nets = [netaddr.IPNetwork(route['destination']) for
|
|
route in host_routes]
|
|
|
|
# Drop routes to the deleted cidr, when the subnet was deleted.
|
|
if deleted_cidr:
|
|
delete_route = {'destination': deleted_cidr, 'nexthop': gateway_ip}
|
|
if delete_route in host_routes:
|
|
host_routes.remove(delete_route)
|
|
|
|
for subnet in self._get_subnets(context, network_id):
|
|
if (subnet.id == subnet_id or subnet.segment_id == segment_id or
|
|
subnet.ip_version != ip_version):
|
|
continue
|
|
subnet_ip_net = netaddr.IPNetwork(subnet.cidr)
|
|
if old_gateway_ip:
|
|
old_route = {'destination': str(subnet.cidr),
|
|
'nexthop': old_gateway_ip}
|
|
if old_route in host_routes:
|
|
host_routes.remove(old_route)
|
|
dest_ip_nets.remove(subnet_ip_net)
|
|
if gateway_ip:
|
|
# Use netaddr here in case the user provided a summary route
|
|
# (supernet route). I.e subnet.cidr = 10.0.1.0/24 and
|
|
# the user provided a host route for 10.0.0.0/16. We don't
|
|
# need to append a route in this case.
|
|
if not any(subnet_ip_net in ip_net for ip_net in dest_ip_nets):
|
|
host_routes.append({'destination': subnet.cidr,
|
|
'nexthop': gateway_ip})
|
|
|
|
return host_routes
|
|
|
|
def _host_routes_need_update(self, host_routes, calc_host_routes):
|
|
"""Compare host routes and calculated host routes
|
|
|
|
:param host_routes: Current host routes
|
|
:param calc_host_routes: Host routes + calculated host routes for
|
|
routed network
|
|
:returns True if host_routes and calc_host_routes are not equal
|
|
"""
|
|
return ((set((route['destination'],
|
|
route['nexthop']) for route in host_routes) !=
|
|
set((route['destination'],
|
|
route['nexthop']) for route in calc_host_routes)))
|
|
|
|
def _update_routed_network_host_routes(self, context, network_id,
|
|
deleted_cidr=None):
|
|
"""Update host routes on subnets on a routed network after event
|
|
|
|
Host routes on the subnets on a routed network may need updates after
|
|
any CREATE or DELETE event.
|
|
|
|
:param network_id: Network ID
|
|
:param deleted_cidr: The cidr of a deleted subnet.
|
|
"""
|
|
for subnet in self._get_subnets(context, network_id):
|
|
host_routes = [{'destination': str(route.destination),
|
|
'nexthop': route.nexthop}
|
|
for route in subnet.host_routes]
|
|
calc_host_routes = self._calculate_routed_network_host_routes(
|
|
context=context,
|
|
ip_version=subnet.ip_version,
|
|
network_id=subnet.network_id,
|
|
subnet_id=subnet.id,
|
|
segment_id=subnet.segment_id,
|
|
host_routes=copy.deepcopy(host_routes),
|
|
gateway_ip=subnet.gateway_ip,
|
|
deleted_cidr=deleted_cidr)
|
|
if self._host_routes_need_update(host_routes, calc_host_routes):
|
|
LOG.debug(
|
|
"Updating host routes for subnet %s on routed network %s",
|
|
subnet.id, subnet.network_id)
|
|
plugin = directory.get_plugin()
|
|
plugin.update_subnet(context, subnet.id,
|
|
{'subnet': {
|
|
'host_routes': calc_host_routes}})
|
|
|
|
@registry.receives(resources.SUBNET, [events.BEFORE_CREATE])
|
|
def host_routes_before_create(self, resource, event, trigger, context,
|
|
subnet, **kwargs):
|
|
segment_id = subnet.get('segment_id')
|
|
gateway_ip = subnet.get('gateway_ip')
|
|
if validators.is_attr_set(subnet.get('host_routes')):
|
|
host_routes = subnet.get('host_routes')
|
|
else:
|
|
host_routes = []
|
|
if segment_id is not None and validators.is_attr_set(gateway_ip):
|
|
calc_host_routes = self._calculate_routed_network_host_routes(
|
|
context=context,
|
|
ip_version=netaddr.IPNetwork(subnet['cidr']).version,
|
|
network_id=subnet['network_id'],
|
|
segment_id=segment_id,
|
|
host_routes=copy.deepcopy(host_routes),
|
|
gateway_ip=gateway_ip)
|
|
if (not host_routes or
|
|
self._host_routes_need_update(host_routes,
|
|
calc_host_routes)):
|
|
subnet['host_routes'] = calc_host_routes
|
|
|
|
@registry.receives(resources.SUBNET, [events.BEFORE_UPDATE])
|
|
def host_routes_before_update(self, resource, event, trigger, **kwargs):
|
|
context = kwargs['context']
|
|
subnet, original_subnet = kwargs['request'], kwargs['original_subnet']
|
|
orig_segment_id = original_subnet.get('segment_id')
|
|
segment_id = subnet.get('segment_id', orig_segment_id)
|
|
orig_gateway_ip = original_subnet.get('gateway_ip')
|
|
gateway_ip = subnet.get('gateway_ip', orig_gateway_ip)
|
|
orig_host_routes = original_subnet.get('host_routes')
|
|
host_routes = subnet.get('host_routes', orig_host_routes)
|
|
if (segment_id and (host_routes != orig_host_routes or
|
|
gateway_ip != orig_gateway_ip)):
|
|
calc_host_routes = self._calculate_routed_network_host_routes(
|
|
context=context,
|
|
ip_version=netaddr.IPNetwork(original_subnet['cidr']).version,
|
|
network_id=original_subnet['network_id'],
|
|
segment_id=segment_id,
|
|
host_routes=copy.deepcopy(host_routes),
|
|
gateway_ip=gateway_ip,
|
|
old_gateway_ip=orig_gateway_ip if (
|
|
gateway_ip != orig_gateway_ip) else None)
|
|
if self._host_routes_need_update(host_routes, calc_host_routes):
|
|
subnet['host_routes'] = calc_host_routes
|
|
|
|
@registry.receives(resources.SUBNET, [events.AFTER_CREATE])
|
|
def host_routes_after_create(self, resource, event, trigger, **kwargs):
|
|
context = kwargs['context']
|
|
subnet = kwargs['subnet']
|
|
# If there are other subnets on the network and subnet has segment_id
|
|
# ensure host routes for all subnets are updated.
|
|
|
|
if (subnet.get('segment_id') and
|
|
self._count_subnets(context, subnet['network_id']) > 1):
|
|
self._update_routed_network_host_routes(context,
|
|
subnet['network_id'])
|
|
|
|
@registry.receives(resources.SUBNET, [events.AFTER_DELETE])
|
|
def host_routes_after_delete(self, resource, event, trigger, context,
|
|
subnet, **kwargs):
|
|
# If this is a routed network, remove any routes to this subnet on
|
|
# this networks remaining subnets.
|
|
if kwargs.get(db.FOR_NET_DELETE):
|
|
return # skip subnet update if the network is going to be deleted
|
|
|
|
if subnet.get('segment_id'):
|
|
self._update_routed_network_host_routes(
|
|
context, subnet['network_id'], deleted_cidr=subnet['cidr'])
|