1673 lines
78 KiB
Python
1673 lines
78 KiB
Python
# Copyright (c) 2012 OpenStack Foundation.
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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 functools
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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 port as port_def
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from neutron_lib.api.definitions import portbindings as portbindings_def
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from neutron_lib.api.definitions import subnetpool as subnetpool_def
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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 exceptions
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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 as ctx
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from neutron_lib.db import api as db_api
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from neutron_lib.db import model_query
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from neutron_lib.db import resource_extend
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from neutron_lib.db import utils as ndb_utils
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from neutron_lib import exceptions as exc
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from neutron_lib.exceptions import address_scope as addr_scope_exc
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from neutron_lib.exceptions import l3 as l3_exc
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from neutron_lib.plugins import constants as plugin_constants
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from neutron_lib.plugins import directory
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from oslo_config import cfg
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from oslo_db import exception as os_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 sqlalchemy import exc as sql_exc
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from sqlalchemy import not_
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from neutron._i18n import _
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from neutron.api.rpc.agentnotifiers import l3_rpc_agent_api
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from neutron.common import _constants
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from neutron.common import ipv6_utils
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from neutron.common import utils
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from neutron.db import db_base_plugin_common
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from neutron.db import ipam_pluggable_backend
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from neutron.db import models_v2
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from neutron.db import rbac_db_mixin as rbac_mixin
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from neutron.db import standardattrdescription_db as stattr_db
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from neutron.extensions import subnetpool_prefix_ops
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from neutron import ipam
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from neutron.ipam import exceptions as ipam_exc
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from neutron.ipam import subnet_alloc
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from neutron import neutron_plugin_base_v2
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from neutron.objects import base as base_obj
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from neutron.objects import network as network_obj
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from neutron.objects import ports as port_obj
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from neutron.objects import subnet as subnet_obj
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from neutron.objects import subnetpool as subnetpool_obj
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LOG = logging.getLogger(__name__)
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def _check_subnet_not_used(context, subnet_id):
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try:
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registry.publish(
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resources.SUBNET, events.BEFORE_DELETE, None,
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payload=events.DBEventPayload(context, resource_id=subnet_id))
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except exceptions.CallbackFailure as e:
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raise exc.SubnetInUse(subnet_id=subnet_id, reason=e)
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def _update_subnetpool_dict(orig_pool, new_pool):
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updated = dict((k, v) for k, v in orig_pool.to_dict().items()
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if k not in orig_pool.synthetic_fields)
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new_pool = new_pool.copy()
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new_prefixes = new_pool.pop('prefixes', constants.ATTR_NOT_SPECIFIED)
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for k, v in new_pool.items():
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if k not in orig_pool.fields_no_update:
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updated[k] = v
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if new_prefixes is not constants.ATTR_NOT_SPECIFIED:
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orig_ip_set = netaddr.IPSet(orig_pool.prefixes)
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new_ip_set = netaddr.IPSet(new_prefixes)
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if not orig_ip_set.issubset(new_ip_set):
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msg = _("Existing prefixes must be "
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"a subset of the new prefixes")
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raise exc.IllegalSubnetPoolPrefixUpdate(msg=msg)
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new_ip_set.compact()
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updated['prefixes'] = [str(prefix.cidr)
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for prefix in new_ip_set.iter_cidrs()]
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else:
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updated['prefixes'] = [str(prefix)
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for prefix in orig_pool.prefixes]
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return updated
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def _port_filter_hook(context, original_model, conditions):
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# Apply the port filter only in non-admin and non-advsvc context
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if ndb_utils.model_query_scope_is_project(context, original_model):
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conditions |= (models_v2.Port.network_id.in_(
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context.session.query(models_v2.Network.id).
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filter(context.project_id == models_v2.Network.project_id).
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subquery()))
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return conditions
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@registry.has_registry_receivers
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class NeutronDbPluginV2(db_base_plugin_common.DbBasePluginCommon,
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neutron_plugin_base_v2.NeutronPluginBaseV2,
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rbac_mixin.RbacPluginMixin,
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stattr_db.StandardAttrDescriptionMixin):
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"""V2 Neutron plugin interface implementation using SQLAlchemy models.
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Whenever a non-read call happens the plugin will call an event handler
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class method (e.g., network_created()). The result is that this class
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can be sub-classed by other classes that add custom behaviors on certain
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events.
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"""
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# This attribute specifies whether the plugin supports or not
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# bulk/pagination/sorting operations. Name mangling is used in
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# order to ensure it is qualified by class
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__native_bulk_support = True
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__native_pagination_support = True
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__native_sorting_support = True
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# This attribute specifies whether the plugin supports or not
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# filter validations. Name mangling is used in
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# order to ensure it is qualified by class
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__filter_validation_support = False
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def has_native_datastore(self):
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return True
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def __new__(cls, *args, **kwargs):
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model_query.register_hook(
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models_v2.Port,
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"port",
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query_hook=None,
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filter_hook=_port_filter_hook,
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result_filters=None)
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return super(NeutronDbPluginV2, cls).__new__(cls, *args, **kwargs)
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def __init__(self):
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self.set_ipam_backend()
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if cfg.CONF.notify_nova_on_port_status_changes:
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# Import nova conditionally to support the use case of Neutron
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# being used outside of an OpenStack context.
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from neutron.notifiers import nova
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# NOTE(arosen) These event listeners are here to hook into when
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# port status changes and notify nova about their change.
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self.nova_notifier = nova.Notifier.get_instance()
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db_api.sqla_listen(models_v2.Port, 'after_insert',
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self.nova_notifier.send_port_status)
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db_api.sqla_listen(models_v2.Port, 'after_update',
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self.nova_notifier.send_port_status)
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db_api.sqla_listen(
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models_v2.Port.status, 'set',
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self.nova_notifier.record_port_status_changed)
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if cfg.CONF.ironic.enable_notifications:
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# Import ironic notifier conditionally
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from neutron.notifiers import ironic
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self.ironic_notifier = ironic.Notifier.get_instance()
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@registry.receives(resources.RBAC_POLICY, [events.BEFORE_CREATE,
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events.BEFORE_UPDATE,
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events.BEFORE_DELETE])
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def validate_network_rbac_policy_change(self, resource, event, trigger,
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payload=None):
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return self._validate_network_rbac_policy_change(
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resource, event, trigger, payload.context, payload)
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@db_api.retry_if_session_inactive()
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def _validate_network_rbac_policy_change(self, resource, event, trigger,
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context, payload):
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"""Validates network RBAC policy changes.
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On creation, verify that the creator is an admin or that it owns the
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network it is sharing.
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On update and delete, make sure the tenant losing access does not have
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resources that depend on that access.
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"""
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object_type = payload.metadata.get('object_type')
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policy = (payload.request_body if event == events.BEFORE_CREATE
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else payload.latest_state)
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if object_type != 'network' or policy['action'] != 'access_as_shared':
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# we only care about shared network policies
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return
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# The object a policy targets cannot be changed so we can look
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# at the original network for the update event as well.
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net = self._get_network(context, policy['object_id'])
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if event in (events.BEFORE_CREATE, events.BEFORE_UPDATE):
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# we still have to verify that the caller owns the network because
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# _get_network will succeed on a shared network
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if not context.is_admin and net['tenant_id'] != context.tenant_id:
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msg = _("Only admins can manipulate policies on networks "
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"they do not own")
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raise exc.InvalidInput(error_message=msg)
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tenant_to_check = None
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self_sharing = policy['target_tenant'] == net['tenant_id']
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if self_sharing:
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return
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if event == events.BEFORE_UPDATE:
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new_tenant = payload.request_body['target_tenant']
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if policy['target_tenant'] != new_tenant:
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tenant_to_check = policy['target_tenant']
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if event == events.BEFORE_DELETE:
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tenant_to_check = policy['target_tenant']
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if tenant_to_check:
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self.ensure_no_tenant_ports_on_network(net['id'], net['tenant_id'],
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tenant_to_check)
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def ensure_no_tenant_ports_on_network(self, network_id, net_tenant_id,
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tenant_id):
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ctx_admin = ctx.get_admin_context()
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ports = model_query.query_with_hooks(ctx_admin, models_v2.Port).filter(
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models_v2.Port.network_id == network_id)
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if tenant_id == '*':
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# for the wildcard we need to get all of the rbac entries to
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# see if any allow the remaining ports on the network.
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# any port with another RBAC entry covering it or one belonging to
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# the same tenant as the network owner is ok
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other_rbac_objs = network_obj.NetworkRBAC.get_objects(
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ctx_admin, object_id=network_id, action='access_as_shared')
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allowed_tenants = [rbac['target_tenant'] for rbac
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in other_rbac_objs
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if rbac.target_tenant != tenant_id]
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allowed_tenants.append(net_tenant_id)
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ports = ports.filter(
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~models_v2.Port.tenant_id.in_(allowed_tenants))
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else:
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# if there is a wildcard rule, we can return early because it
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# allows any ports
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if network_obj.NetworkRBAC.get_object(
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ctx_admin, object_id=network_id, action='access_as_shared',
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target_tenant='*'):
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return
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ports = ports.filter(models_v2.Port.tenant_id == tenant_id)
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if ports.count():
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raise exc.InvalidSharedSetting(network=network_id)
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def set_ipam_backend(self):
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self.ipam = ipam_pluggable_backend.IpamPluggableBackend()
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def _validate_host_route(self, route, ip_version):
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try:
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netaddr.IPNetwork(route['destination'])
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netaddr.IPAddress(route['nexthop'])
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except netaddr.core.AddrFormatError:
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err_msg = _("Invalid route: %s") % route
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raise exc.InvalidInput(error_message=err_msg)
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except ValueError:
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# netaddr.IPAddress would raise this
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err_msg = _("Invalid route: %s") % route
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raise exc.InvalidInput(error_message=err_msg)
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self._validate_ip_version(ip_version, route['nexthop'], 'nexthop')
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self._validate_ip_version(ip_version, route['destination'],
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'destination')
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def _validate_shared_update(self, context, id, original, updated):
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# The only case that needs to be validated is when 'shared'
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# goes from True to False
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if updated['shared'] == original.shared or updated['shared']:
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return
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ports = model_query.query_with_hooks(
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context, models_v2.Port).filter(models_v2.Port.network_id == id)
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ports = ports.filter(not_(models_v2.Port.device_owner.startswith(
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constants.DEVICE_OWNER_NETWORK_PREFIX)))
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subnets = subnet_obj.Subnet.get_objects(context, network_id=id)
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tenant_ids = set([port['tenant_id'] for port in ports] +
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[subnet['tenant_id'] for subnet in subnets])
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# raise if multiple tenants found or if the only tenant found
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# is not the owner of the network
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if (len(tenant_ids) > 1 or len(tenant_ids) == 1 and
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original.tenant_id not in tenant_ids):
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self._validate_projects_have_access_to_network(
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original, tenant_ids)
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def _validate_projects_have_access_to_network(self, network, project_ids):
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ctx_admin = ctx.get_admin_context()
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other_rbac_objs = network_obj.NetworkRBAC.get_objects(
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ctx_admin, object_id=network.id, action='access_as_shared')
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allowed_projects = {rbac['target_tenant'] for rbac in other_rbac_objs
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if rbac.target_tenant != '*'}
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allowed_projects.add(network.project_id)
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if project_ids - allowed_projects:
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raise exc.InvalidSharedSetting(network=network.name)
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def _validate_ipv6_attributes(self, subnet, cur_subnet):
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if cur_subnet:
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self._validate_ipv6_update_dhcp(subnet, cur_subnet)
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return
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ra_mode_set = validators.is_attr_set(subnet.get('ipv6_ra_mode'))
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address_mode_set = validators.is_attr_set(
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subnet.get('ipv6_address_mode'))
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self._validate_ipv6_dhcp(ra_mode_set, address_mode_set,
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subnet['enable_dhcp'])
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if ra_mode_set and address_mode_set:
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self._validate_ipv6_combination(subnet['ipv6_ra_mode'],
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subnet['ipv6_address_mode'])
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if address_mode_set or ra_mode_set:
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self._validate_eui64_applicable(subnet)
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def _validate_eui64_applicable(self, subnet):
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# Per RFC 4862, section 5.5.3, prefix length and interface
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# id together should be equal to 128. Currently neutron supports
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# EUI64 interface id only, thus limiting the prefix
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# length to be 64 only.
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if ipv6_utils.is_auto_address_subnet(subnet):
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if netaddr.IPNetwork(subnet['cidr']).prefixlen != 64:
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msg = _('Invalid CIDR %s for IPv6 address mode. '
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'OpenStack uses the EUI-64 address format, '
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'which requires the prefix to be /64')
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raise exc.InvalidInput(
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error_message=(msg % subnet['cidr']))
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def _validate_ipv6_combination(self, ra_mode, address_mode):
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if ra_mode != address_mode:
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msg = _("ipv6_ra_mode set to '%(ra_mode)s' with ipv6_address_mode "
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"set to '%(addr_mode)s' is not valid. "
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"If both attributes are set, they must be the same value"
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) % {'ra_mode': ra_mode, 'addr_mode': address_mode}
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raise exc.InvalidInput(error_message=msg)
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def _validate_ipv6_dhcp(self, ra_mode_set, address_mode_set, enable_dhcp):
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if (ra_mode_set or address_mode_set) and not enable_dhcp:
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msg = _("ipv6_ra_mode or ipv6_address_mode cannot be set when "
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"enable_dhcp is set to False")
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raise exc.InvalidInput(error_message=msg)
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def _validate_ipv6_update_dhcp(self, subnet, cur_subnet):
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if ('enable_dhcp' in subnet and not subnet['enable_dhcp']):
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msg = _("Cannot disable enable_dhcp with "
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"ipv6 attributes set")
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ra_mode_set = validators.is_attr_set(subnet.get('ipv6_ra_mode'))
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address_mode_set = validators.is_attr_set(
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subnet.get('ipv6_address_mode'))
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if ra_mode_set or address_mode_set:
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raise exc.InvalidInput(error_message=msg)
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old_ra_mode_set = validators.is_attr_set(
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cur_subnet.get('ipv6_ra_mode'))
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old_address_mode_set = validators.is_attr_set(
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cur_subnet.get('ipv6_address_mode'))
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if old_ra_mode_set or old_address_mode_set:
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raise exc.InvalidInput(error_message=msg)
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def _create_bulk(self, resource, context, request_items):
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objects = []
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collection = "%ss" % resource
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items = request_items[collection]
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try:
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with db_api.CONTEXT_WRITER.using(context):
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for item in items:
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obj_creator = getattr(self, 'create_%s' % resource)
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objects.append(obj_creator(context, item))
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except Exception:
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with excutils.save_and_reraise_exception():
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LOG.error("An exception occurred while creating "
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"the %(resource)s:%(item)s",
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{'resource': resource, 'item': item})
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return objects
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@db_api.retry_if_session_inactive()
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def create_network_bulk(self, context, networks):
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return self._create_bulk('network', context, networks)
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@db_api.retry_if_session_inactive()
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def create_network(self, context, network):
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"""Handle creation of a single network."""
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net_db = self.create_network_db(context, network)
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return self._make_network_dict(net_db, process_extensions=False,
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context=context)
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def create_network_db(self, context, network):
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# single request processing
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n = network['network']
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with db_api.CONTEXT_WRITER.using(context):
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args = {'tenant_id': n['tenant_id'],
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'id': n.get('id') or uuidutils.generate_uuid(),
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'name': n['name'],
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'mtu': n.get('mtu'),
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'admin_state_up': n['admin_state_up'],
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'status': n.get('status', constants.NET_STATUS_ACTIVE),
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'description': n.get('description')}
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network = models_v2.Network(**args)
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context.session.add(network)
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if n['shared']:
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np_rbac_args = {'project_id': network.project_id,
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'object_id': network.id,
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'action': 'access_as_shared',
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'target_tenant': '*'}
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np_rbac_obj = network_obj.NetworkRBAC(context, **np_rbac_args)
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np_rbac_obj.create()
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return network
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@db_api.retry_if_session_inactive()
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def update_network(self, context, id, network):
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n = network['network']
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with db_api.CONTEXT_WRITER.using(context):
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network = self._get_network(context, id)
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# validate 'shared' parameter
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if 'shared' in n:
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entry = None
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for item in network.rbac_entries:
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if (item.action == 'access_as_shared' and
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item.target_tenant == '*'):
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entry = item
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break
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setattr(network, 'shared', bool(entry))
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self._validate_shared_update(context, id, network, n)
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update_shared = n.pop('shared')
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if update_shared and not entry:
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np_rbac_args = {'project_id': network.project_id,
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'object_id': network.id,
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'action': 'access_as_shared',
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'target_tenant': '*'}
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np_rbac_obj = network_obj.NetworkRBAC(context,
|
|
**np_rbac_args)
|
|
np_rbac_obj.create()
|
|
elif not update_shared and entry:
|
|
network_obj.NetworkRBAC.delete_objects(
|
|
context, object_id=network.id,
|
|
action='access_as_shared', target_tenant='*')
|
|
|
|
# TODO(ihrachys) Below can be removed when we make sqlalchemy
|
|
# event listeners in neutron_lib/db/api.py to refresh expired
|
|
# attributes.
|
|
#
|
|
# First trigger expiration of rbac_entries.
|
|
context.session.flush()
|
|
# Then fetch state for _make_network_dict use outside session
|
|
# context.
|
|
getattr(network, 'rbac_entries')
|
|
|
|
# The filter call removes attributes from the body received from
|
|
# the API that are logically tied to network resources but are
|
|
# stored in other database tables handled by extensions
|
|
network.update(
|
|
ndb_utils.filter_non_model_columns(n, models_v2.Network))
|
|
return self._make_network_dict(network, context=context)
|
|
|
|
def _ensure_network_not_in_use(self, context, net_id):
|
|
non_auto_ports = context.session.query(
|
|
models_v2.Port.id).filter_by(network_id=net_id).filter(
|
|
~models_v2.Port.device_owner.in_(
|
|
_constants.AUTO_DELETE_PORT_OWNERS))
|
|
if non_auto_ports.count():
|
|
raise exc.NetworkInUse(net_id=net_id)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def delete_network(self, context, id):
|
|
registry.publish(resources.NETWORK, events.BEFORE_DELETE, self,
|
|
payload=events.DBEventPayload(
|
|
context, resource_id=id))
|
|
self._ensure_network_not_in_use(context, id)
|
|
with db_api.CONTEXT_READER.using(context):
|
|
auto_delete_port_ids = [p.id for p in context.session.query(
|
|
models_v2.Port.id).filter_by(network_id=id).filter(
|
|
models_v2.Port.device_owner.in_(
|
|
_constants.AUTO_DELETE_PORT_OWNERS))]
|
|
for port_id in auto_delete_port_ids:
|
|
try:
|
|
self.delete_port(context.elevated(), port_id)
|
|
except exc.PortNotFound:
|
|
# Don't raise if something else concurrently deleted the port
|
|
LOG.debug("Ignoring PortNotFound when deleting port '%s'. "
|
|
"The port has already been deleted.", port_id)
|
|
# clean up subnets
|
|
subnets = self._get_subnets_by_network(context, id)
|
|
with db_api.exc_to_retry(os_db_exc.DBReferenceError):
|
|
# retry reference errors so we can check the port type and
|
|
# cleanup if a network-owned port snuck in without failing
|
|
for subnet in subnets:
|
|
self._delete_subnet(context, subnet)
|
|
# TODO(ralonsoh): use payloads
|
|
registry.notify(resources.SUBNET, events.AFTER_DELETE,
|
|
self, context=context, subnet=subnet.to_dict(),
|
|
for_net_delete=True)
|
|
with db_api.CONTEXT_WRITER.using(context):
|
|
network_db = self._get_network(context, id)
|
|
network = self._make_network_dict(network_db, context=context)
|
|
registry.notify(resources.NETWORK, events.PRECOMMIT_DELETE,
|
|
self, context=context, network_id=id)
|
|
# We expire network_db here because precommit deletion
|
|
# might have left the relationship stale, for example,
|
|
# if we deleted a segment.
|
|
context.session.expire(network_db)
|
|
network_db = self._get_network(context, id)
|
|
context.session.delete(network_db)
|
|
registry.notify(resources.NETWORK, events.AFTER_DELETE,
|
|
self, context=context, network=network)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def get_network(self, context, id, fields=None):
|
|
network = self._get_network(context, id)
|
|
return self._make_network_dict(network, fields, context=context)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def _get_networks(self, context, filters=None, fields=None,
|
|
sorts=None, limit=None, marker=None,
|
|
page_reverse=False):
|
|
marker_obj = ndb_utils.get_marker_obj(self, context, 'network',
|
|
limit, marker)
|
|
return model_query.get_collection(
|
|
context, models_v2.Network,
|
|
# if caller needs postprocessing, it should implement it explicitly
|
|
dict_func=None,
|
|
filters=filters, fields=fields,
|
|
sorts=sorts,
|
|
limit=limit,
|
|
marker_obj=marker_obj,
|
|
page_reverse=page_reverse)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def get_networks(self, context, filters=None, fields=None,
|
|
sorts=None, limit=None, marker=None,
|
|
page_reverse=False):
|
|
make_network_dict = functools.partial(self._make_network_dict,
|
|
context=context)
|
|
return [
|
|
make_network_dict(net, fields)
|
|
for net in self._get_networks(
|
|
context, filters=filters, fields=fields, sorts=sorts,
|
|
limit=limit, marker=marker, page_reverse=page_reverse)
|
|
]
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def get_networks_count(self, context, filters=None):
|
|
return model_query.get_collection_count(context, models_v2.Network,
|
|
filters=filters)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def create_subnet_bulk(self, context, subnets):
|
|
return self._create_bulk('subnet', context, subnets)
|
|
|
|
def _validate_ip_version(self, ip_version, addr, name):
|
|
"""Check IP field of a subnet match specified ip version."""
|
|
ip = netaddr.IPNetwork(addr)
|
|
if ip.version != ip_version:
|
|
data = {'name': name,
|
|
'addr': addr,
|
|
'ip_version': ip_version}
|
|
msg = _("%(name)s '%(addr)s' does not match "
|
|
"the ip_version '%(ip_version)s'") % data
|
|
raise exc.InvalidInput(error_message=msg)
|
|
|
|
def _validate_subnet(self, context, s, cur_subnet=None):
|
|
"""Validate a subnet spec."""
|
|
|
|
# This method will validate attributes which may change during
|
|
# create_subnet() and update_subnet().
|
|
# The method requires the subnet spec 's' has 'ip_version' field.
|
|
# If 's' dict does not have 'ip_version' field in an API call
|
|
# (e.g., update_subnet()), you need to set 'ip_version' field
|
|
# before calling this method.
|
|
|
|
ip_ver = s['ip_version']
|
|
|
|
if validators.is_attr_set(s.get('cidr')):
|
|
self._validate_ip_version(ip_ver, s['cidr'], 'cidr')
|
|
|
|
# TODO(watanabe.isao): After we found a way to avoid the re-sync
|
|
# from the agent side, this restriction could be removed.
|
|
if cur_subnet:
|
|
dhcp_was_enabled = cur_subnet.enable_dhcp
|
|
else:
|
|
dhcp_was_enabled = False
|
|
if s.get('enable_dhcp') and not dhcp_was_enabled:
|
|
subnet_prefixlen = netaddr.IPNetwork(s['cidr']).prefixlen
|
|
error_message = _("Subnet has a prefix length that is "
|
|
"incompatible with DHCP service enabled")
|
|
if ((ip_ver == 4 and subnet_prefixlen > 30) or
|
|
(ip_ver == 6 and subnet_prefixlen > 126)):
|
|
raise exc.InvalidInput(error_message=error_message)
|
|
|
|
net = netaddr.IPNetwork(s['cidr'])
|
|
if net.is_multicast():
|
|
error_message = _("Multicast IP subnet is not supported "
|
|
"if enable_dhcp is True")
|
|
raise exc.InvalidInput(error_message=error_message)
|
|
elif net.is_loopback():
|
|
error_message = _("Loopback IP subnet is not supported "
|
|
"if enable_dhcp is True")
|
|
raise exc.InvalidInput(error_message=error_message)
|
|
elif ip_ver == constants.IP_VERSION_4 and net.first is 0:
|
|
error_message = _("First IP '0.0.0.0' of network is not "
|
|
"supported if enable_dhcp is True.")
|
|
raise exc.InvalidInput(error_message=error_message)
|
|
|
|
if validators.is_attr_set(s.get('gateway_ip')):
|
|
self._validate_ip_version(ip_ver, s['gateway_ip'], 'gateway_ip')
|
|
is_gateway_not_valid = (
|
|
ipam.utils.check_gateway_invalid_in_subnet(
|
|
s['cidr'], s['gateway_ip']))
|
|
if is_gateway_not_valid:
|
|
error_message = _("Gateway is not valid on subnet")
|
|
raise exc.InvalidInput(error_message=error_message)
|
|
# Ensure the gateway IP is not assigned to any port
|
|
# skip this check in case of create (s parameter won't have id)
|
|
# NOTE(salv-orlando): There is slight chance of a race, when
|
|
# a subnet-update and a router-interface-add operation are
|
|
# executed concurrently
|
|
if cur_subnet and not ipv6_utils.is_ipv6_pd_enabled(s):
|
|
with db_api.CONTEXT_READER.using(context):
|
|
# TODO(electrocucaracha): Look a solution for Join in OVO
|
|
ipal = models_v2.IPAllocation
|
|
alloc_qry = context.session.query(ipal.port_id)
|
|
alloc_qry = alloc_qry.join("port", "routerport")
|
|
gateway_ip = str(cur_subnet['gateway_ip'])
|
|
allocated = alloc_qry.filter(
|
|
ipal.ip_address == gateway_ip,
|
|
ipal.subnet_id == cur_subnet['id']).first()
|
|
if allocated and allocated.port_id:
|
|
raise exc.GatewayIpInUse(
|
|
ip_address=gateway_ip,
|
|
port_id=allocated.port_id)
|
|
|
|
if validators.is_attr_set(s.get('dns_nameservers')):
|
|
if len(s['dns_nameservers']) > cfg.CONF.max_dns_nameservers:
|
|
raise exc.DNSNameServersExhausted(
|
|
subnet_id=s.get('id', _('new subnet')),
|
|
quota=cfg.CONF.max_dns_nameservers)
|
|
for dns in s['dns_nameservers']:
|
|
try:
|
|
netaddr.IPAddress(dns)
|
|
except Exception:
|
|
raise exc.InvalidInput(
|
|
error_message=(_("Error parsing dns address %s") %
|
|
dns))
|
|
self._validate_ip_version(ip_ver, dns, 'dns_nameserver')
|
|
|
|
if validators.is_attr_set(s.get('host_routes')):
|
|
if len(s['host_routes']) > cfg.CONF.max_subnet_host_routes:
|
|
raise exc.HostRoutesExhausted(
|
|
subnet_id=s.get('id', _('new subnet')),
|
|
quota=cfg.CONF.max_subnet_host_routes)
|
|
# check if the routes are all valid
|
|
for rt in s['host_routes']:
|
|
self._validate_host_route(rt, ip_ver)
|
|
|
|
if ip_ver == 4:
|
|
if validators.is_attr_set(s.get('ipv6_ra_mode')):
|
|
raise exc.InvalidInput(
|
|
error_message=(_("ipv6_ra_mode is not valid when "
|
|
"ip_version is 4")))
|
|
if validators.is_attr_set(s.get('ipv6_address_mode')):
|
|
raise exc.InvalidInput(
|
|
error_message=(_("ipv6_address_mode is not valid when "
|
|
"ip_version is 4")))
|
|
if ip_ver == 6:
|
|
self._validate_ipv6_attributes(s, cur_subnet)
|
|
|
|
def _validate_subnet_for_pd(self, subnet):
|
|
"""Validates that subnet parameters are correct for IPv6 PD"""
|
|
if (subnet.get('ip_version') != constants.IP_VERSION_6):
|
|
reason = _("Prefix Delegation can only be used with IPv6 "
|
|
"subnets.")
|
|
raise exc.BadRequest(resource='subnets', msg=reason)
|
|
|
|
mode_list = [constants.IPV6_SLAAC,
|
|
constants.DHCPV6_STATELESS]
|
|
|
|
ra_mode = subnet.get('ipv6_ra_mode')
|
|
if ra_mode not in mode_list:
|
|
reason = _("IPv6 RA Mode must be SLAAC or Stateless for "
|
|
"Prefix Delegation.")
|
|
raise exc.BadRequest(resource='subnets', msg=reason)
|
|
|
|
address_mode = subnet.get('ipv6_address_mode')
|
|
if address_mode not in mode_list:
|
|
reason = _("IPv6 Address Mode must be SLAAC or Stateless for "
|
|
"Prefix Delegation.")
|
|
raise exc.BadRequest(resource='subnets', msg=reason)
|
|
|
|
def _update_router_gw_ports(self, context, network, subnet):
|
|
l3plugin = directory.get_plugin(plugin_constants.L3)
|
|
if l3plugin:
|
|
gw_ports = self._get_router_gw_ports_by_network(context,
|
|
network['id'])
|
|
router_ids = [p.device_id for p in gw_ports]
|
|
for id in router_ids:
|
|
try:
|
|
self._update_router_gw_port(context, id, network, subnet)
|
|
except l3_exc.RouterNotFound:
|
|
LOG.debug("Router %(id)s was concurrently deleted while "
|
|
"updating GW port for subnet %(s)s",
|
|
{'id': id, 's': subnet})
|
|
|
|
def _update_router_gw_port(self, context, router_id, network, subnet):
|
|
l3plugin = directory.get_plugin(plugin_constants.L3)
|
|
ctx_admin = context.elevated()
|
|
ext_subnets_dict = {s['id']: s for s in network['subnets']}
|
|
router = l3plugin.get_router(ctx_admin, router_id)
|
|
external_gateway_info = router['external_gateway_info']
|
|
# Get all stateful (i.e. non-SLAAC/DHCPv6-stateless) fixed ips
|
|
fips = [f for f in external_gateway_info['external_fixed_ips']
|
|
if not ipv6_utils.is_auto_address_subnet(
|
|
ext_subnets_dict[f['subnet_id']])]
|
|
num_fips = len(fips)
|
|
# Don't add the fixed IP to the port if it already
|
|
# has a stateful fixed IP of the same IP version
|
|
if num_fips > 1:
|
|
return
|
|
if num_fips == 1 and netaddr.IPAddress(
|
|
fips[0]['ip_address']).version == subnet['ip_version']:
|
|
return
|
|
external_gateway_info['external_fixed_ips'].append(
|
|
{'subnet_id': subnet['id']})
|
|
info = {'router': {'external_gateway_info': external_gateway_info}}
|
|
l3plugin.update_router(context, router_id, info)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def _create_subnet_postcommit(self, context, result,
|
|
network=None, ipam_subnet=None):
|
|
if not network:
|
|
network = self._get_network(context,
|
|
result['network_id'])
|
|
if not ipam_subnet:
|
|
ipam_subnet = self.ipam.get_subnet(context, result['id'])
|
|
|
|
if hasattr(network, 'external') and network.external:
|
|
self._update_router_gw_ports(context,
|
|
network,
|
|
result)
|
|
# If this subnet supports auto-addressing, then update any
|
|
# internal ports on the network with addresses for this subnet.
|
|
if ipv6_utils.is_auto_address_subnet(result):
|
|
updated_ports = self.ipam.add_auto_addrs_on_network_ports(
|
|
context, result, ipam_subnet)
|
|
for port_id in updated_ports:
|
|
port_info = {'port': {'id': port_id}}
|
|
try:
|
|
self.update_port(context, port_id, port_info)
|
|
except exc.PortNotFound:
|
|
LOG.debug("Port %(p)s concurrently deleted while adding "
|
|
"address for new subnet %(s)s.", {'p': port_id,
|
|
's': result})
|
|
|
|
def _get_subnetpool_id(self, context, subnet):
|
|
"""Return the subnetpool id for this request
|
|
|
|
:param subnet: The subnet dict from the request
|
|
"""
|
|
use_default_subnetpool = subnet.get('use_default_subnetpool')
|
|
if use_default_subnetpool == constants.ATTR_NOT_SPECIFIED:
|
|
use_default_subnetpool = False
|
|
subnetpool_id = subnet.get('subnetpool_id')
|
|
if subnetpool_id == constants.ATTR_NOT_SPECIFIED:
|
|
subnetpool_id = None
|
|
|
|
if use_default_subnetpool and subnetpool_id:
|
|
msg = _('subnetpool_id and use_default_subnetpool cannot both be '
|
|
'specified')
|
|
raise exc.BadRequest(resource='subnets', msg=msg)
|
|
|
|
if subnetpool_id:
|
|
return subnetpool_id
|
|
|
|
if not use_default_subnetpool:
|
|
return
|
|
|
|
cidr = subnet.get('cidr')
|
|
if validators.is_attr_set(cidr):
|
|
ip_version = netaddr.IPNetwork(cidr).version
|
|
else:
|
|
ip_version = subnet.get('ip_version')
|
|
if not validators.is_attr_set(ip_version):
|
|
msg = _('ip_version must be specified in the absence of '
|
|
'cidr and subnetpool_id')
|
|
raise exc.BadRequest(resource='subnets', msg=msg)
|
|
|
|
if ip_version == 6 and cfg.CONF.ipv6_pd_enabled:
|
|
return constants.IPV6_PD_POOL_ID
|
|
|
|
subnetpool = self.get_default_subnetpool(context, ip_version)
|
|
if subnetpool:
|
|
return subnetpool['id']
|
|
|
|
msg = _('No default subnetpool found for IPv%s') % ip_version
|
|
raise exc.BadRequest(resource='subnets', msg=msg)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def create_subnet(self, context, subnet):
|
|
result, net, ipam_sub = self._create_subnet_precommit(context, subnet)
|
|
self._create_subnet_postcommit(context, result, net, ipam_sub)
|
|
return result
|
|
|
|
def _create_subnet_precommit(self, context, subnet):
|
|
"""Creates subnet in DB, returns result, network, and ipam_subnet."""
|
|
s = subnet['subnet']
|
|
cidr = s.get('cidr', constants.ATTR_NOT_SPECIFIED)
|
|
prefixlen = s.get('prefixlen', constants.ATTR_NOT_SPECIFIED)
|
|
has_cidr = validators.is_attr_set(cidr)
|
|
has_prefixlen = validators.is_attr_set(prefixlen)
|
|
|
|
if has_cidr and has_prefixlen:
|
|
msg = _('cidr and prefixlen must not be supplied together')
|
|
raise exc.BadRequest(resource='subnets', msg=msg)
|
|
|
|
if has_cidr:
|
|
# turn the CIDR into a proper subnet
|
|
net = netaddr.IPNetwork(s['cidr'])
|
|
subnet['subnet']['cidr'] = '%s/%s' % (net.network, net.prefixlen)
|
|
|
|
subnetpool_id = self._get_subnetpool_id(context, s)
|
|
if not subnetpool_id and not has_cidr:
|
|
msg = _('a subnetpool must be specified in the absence of a cidr')
|
|
raise exc.BadRequest(resource='subnets', msg=msg)
|
|
|
|
if subnetpool_id:
|
|
self.ipam.validate_pools_with_subnetpool(s)
|
|
if subnetpool_id == constants.IPV6_PD_POOL_ID:
|
|
if has_cidr:
|
|
# We do not currently support requesting a specific
|
|
# cidr with IPv6 prefix delegation. Set the subnetpool_id
|
|
# to None and allow the request to continue as normal.
|
|
subnetpool_id = None
|
|
self._validate_subnet(context, s)
|
|
else:
|
|
prefix = constants.PROVISIONAL_IPV6_PD_PREFIX
|
|
subnet['subnet']['cidr'] = prefix
|
|
self._validate_subnet_for_pd(s)
|
|
else:
|
|
if not has_cidr:
|
|
msg = _('A cidr must be specified in the absence of a '
|
|
'subnet pool')
|
|
raise exc.BadRequest(resource='subnets', msg=msg)
|
|
self._validate_subnet(context, s)
|
|
|
|
with db_api.CONTEXT_WRITER.using(context):
|
|
network = self._get_network(context,
|
|
subnet['subnet']['network_id'])
|
|
subnet, ipam_subnet = self.ipam.allocate_subnet(context,
|
|
network,
|
|
subnet['subnet'],
|
|
subnetpool_id)
|
|
# TODO(ihrachys): make sqlalchemy refresh expired relationships
|
|
getattr(network, 'subnets')
|
|
result = self._make_subnet_dict(subnet, context=context)
|
|
return result, network, ipam_subnet
|
|
|
|
def _update_allocation_pools(self, subnet):
|
|
"""Gets new allocation pools and formats them correctly"""
|
|
allocation_pools = self.ipam.generate_pools(subnet['cidr'],
|
|
subnet['gateway_ip'])
|
|
return [{'start': str(netaddr.IPAddress(p.first,
|
|
subnet['ip_version'])),
|
|
'end': str(netaddr.IPAddress(p.last, subnet['ip_version']))}
|
|
for p in allocation_pools]
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def update_subnet(self, context, id, subnet):
|
|
"""Update the subnet with new info.
|
|
|
|
The change however will not be realized until the client renew the
|
|
dns lease or we support gratuitous DHCP offers
|
|
"""
|
|
result, orig = self._update_subnet_precommit(context, id, subnet)
|
|
return self._update_subnet_postcommit(context, orig, result)
|
|
|
|
def _update_subnet_precommit(self, context, id, subnet):
|
|
"""All subnet update operations safe to enclose in a transaction.
|
|
|
|
:param context: neutron api request context
|
|
:param id: subnet id
|
|
:param subnet: API request dictionary
|
|
"""
|
|
s = subnet['subnet']
|
|
new_cidr = s.get('cidr')
|
|
subnet_obj = self._get_subnet_object(context, id)
|
|
orig = self._make_subnet_dict(subnet_obj, fields=None, context=context)
|
|
# Fill 'ip_version' and 'allocation_pools' fields with the current
|
|
# value since _validate_subnet() expects subnet spec has 'ip_version'
|
|
# and 'allocation_pools' fields.
|
|
s['ip_version'] = subnet_obj.ip_version
|
|
s['cidr'] = subnet_obj.cidr
|
|
s['id'] = subnet_obj.id
|
|
s['project_id'] = subnet_obj.project_id
|
|
s['tenant_id'] = subnet_obj.project_id
|
|
s['subnetpool_id'] = subnet_obj.subnetpool_id
|
|
# Fill 'network_id' field with the current value since this is expected
|
|
# by _validate_segment() in ipam_pluggable_backend.
|
|
s['network_id'] = subnet_obj.network_id
|
|
self._validate_subnet(context, s, cur_subnet=subnet_obj)
|
|
db_pools = [netaddr.IPRange(p.start, p.end)
|
|
for p in subnet_obj.allocation_pools]
|
|
|
|
if new_cidr and ipv6_utils.is_ipv6_pd_enabled(s):
|
|
# This is an ipv6 prefix delegation-enabled subnet being given an
|
|
# updated cidr by the process_prefix_update RPC
|
|
s['cidr'] = netaddr.IPNetwork(new_cidr, s['ip_version'])
|
|
# Update gateway_ip and allocation pools based on new cidr
|
|
s['gateway_ip'] = utils.get_first_host_ip(
|
|
s['cidr'], s['ip_version'])
|
|
s['allocation_pools'] = self._update_allocation_pools(s)
|
|
|
|
range_pools = None
|
|
if s.get('allocation_pools') is not None:
|
|
# Convert allocation pools to IPRange to simplify future checks
|
|
range_pools = self.ipam.pools_to_ip_range(s['allocation_pools'])
|
|
self.ipam.validate_allocation_pools(range_pools, s['cidr'])
|
|
s['allocation_pools'] = range_pools
|
|
|
|
# If either gateway_ip or allocation_pools were specified
|
|
subnet_gateway = (subnet_obj.gateway_ip
|
|
if subnet_obj.gateway_ip else None)
|
|
gateway_ip = s.get('gateway_ip', subnet_gateway)
|
|
gateway_ip_changed = gateway_ip != subnet_gateway
|
|
if gateway_ip_changed or s.get('allocation_pools') is not None:
|
|
pools = range_pools if range_pools is not None else db_pools
|
|
if gateway_ip:
|
|
self.ipam.validate_gw_out_of_pools(gateway_ip, pools)
|
|
|
|
kwargs = {'context': context, 'original_subnet': orig,
|
|
'request': s}
|
|
registry.notify(resources.SUBNET, events.BEFORE_UPDATE,
|
|
self, **kwargs)
|
|
|
|
with db_api.CONTEXT_WRITER.using(context):
|
|
subnet, changes = self.ipam.update_db_subnet(context, id, s,
|
|
db_pools)
|
|
return self._make_subnet_dict(subnet, context=context), orig
|
|
|
|
@property
|
|
def l3_rpc_notifier(self):
|
|
if not hasattr(self, '_l3_rpc_notifier'):
|
|
self._l3_rpc_notifier = l3_rpc_agent_api.L3AgentNotifyAPI()
|
|
return self._l3_rpc_notifier
|
|
|
|
@l3_rpc_notifier.setter
|
|
def l3_rpc_notifier(self, value):
|
|
self._l3_rpc_notifier = value
|
|
|
|
def _update_subnet_postcommit(self, context, orig, result):
|
|
"""Subnet update operations that happen after transaction completes.
|
|
|
|
:param context: neutron api request context
|
|
:param orig: subnet dictionary representing state before update
|
|
:param result: subnet dictionary representing state after update
|
|
"""
|
|
update_ports_needed = (result['cidr'] != orig['cidr'] and
|
|
ipv6_utils.is_ipv6_pd_enabled(result))
|
|
if update_ports_needed:
|
|
# Find ports that have not yet been updated
|
|
# with an IP address by Prefix Delegation, and update them
|
|
filters = {'fixed_ips': {'subnet_id': [result['id']]}}
|
|
ports = self.get_ports(context, filters=filters)
|
|
routers = []
|
|
for port in ports:
|
|
for ip in port['fixed_ips']:
|
|
if ip['subnet_id'] == result['id']:
|
|
if (port['device_owner'] in
|
|
constants.ROUTER_INTERFACE_OWNERS):
|
|
routers.append(port['device_id'])
|
|
ip['ip_address'] = result['gateway_ip']
|
|
else:
|
|
# We remove ip_address and pass only PD subnet_id
|
|
# in port's fixed_ip for port_update. Later, IPAM
|
|
# drivers will allocate eui64 address with new
|
|
# prefix when they find PD subnet_id in port's
|
|
# fixed_ip.
|
|
ip.pop('ip_address', None)
|
|
self.update_port(context, port['id'], {'port': port})
|
|
# Send router_update to l3_agent
|
|
if routers:
|
|
self.l3_rpc_notifier.routers_updated(context, routers)
|
|
|
|
kwargs = {'context': context, 'subnet': result,
|
|
'original_subnet': orig}
|
|
registry.notify(resources.SUBNET, events.AFTER_UPDATE, self,
|
|
**kwargs)
|
|
return result
|
|
|
|
@db_api.CONTEXT_READER
|
|
def _subnet_get_user_allocation(self, context, subnet_id):
|
|
"""Check if there are any user ports on subnet and return first."""
|
|
return port_obj.IPAllocation.get_alloc_by_subnet_id(
|
|
context, subnet_id, _constants.AUTO_DELETE_PORT_OWNERS)
|
|
|
|
@db_api.CONTEXT_READER
|
|
def _subnet_check_ip_allocations_internal_router_ports(self, context,
|
|
subnet_id):
|
|
# Do not delete the subnet if IP allocations for internal
|
|
# router ports still exist
|
|
allocs = port_obj.IPAllocation.get_alloc_by_subnet_id(
|
|
context, subnet_id, constants.ROUTER_INTERFACE_OWNERS, False)
|
|
if allocs:
|
|
LOG.debug("Subnet %s still has internal router ports, "
|
|
"cannot delete", subnet_id)
|
|
raise exc.SubnetInUse(subnet_id=subnet_id)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def _remove_subnet_from_port(self, context, sub_id, port_id, auto_subnet):
|
|
try:
|
|
fixed = [f for f in self.get_port(context, port_id)['fixed_ips']
|
|
if f['subnet_id'] != sub_id]
|
|
if auto_subnet:
|
|
# special flag to avoid re-allocation on auto subnets
|
|
fixed.append({'subnet_id': sub_id, 'delete_subnet': True})
|
|
data = {port_def.RESOURCE_NAME: {'fixed_ips': fixed}}
|
|
self.update_port(context, port_id, data)
|
|
except exc.PortNotFound:
|
|
# port is gone
|
|
return
|
|
except exc.SubnetNotFound as e:
|
|
# another subnet in the fixed ips was concurrently removed. retry
|
|
raise os_db_exc.RetryRequest(e)
|
|
|
|
def _ensure_no_user_ports_on_subnet(self, context, id):
|
|
alloc = self._subnet_get_user_allocation(context, id)
|
|
if alloc:
|
|
LOG.info("Found port (%(port_id)s, %(ip)s) having IP "
|
|
"allocation on subnet "
|
|
"%(subnet)s, cannot delete",
|
|
{'ip': alloc.ip_address,
|
|
'port_id': alloc.port_id,
|
|
'subnet': id})
|
|
raise exc.SubnetInUse(subnet_id=id)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def _remove_subnet_ip_allocations_from_ports(self, context, subnet):
|
|
# Do not allow a subnet to be deleted if a router is attached to it
|
|
self._subnet_check_ip_allocations_internal_router_ports(
|
|
context, subnet.id)
|
|
is_auto_addr_subnet = ipv6_utils.is_auto_address_subnet(subnet)
|
|
if not is_auto_addr_subnet:
|
|
# we only automatically remove IP addresses from user ports if
|
|
# the IPs come from auto allocation subnets.
|
|
self._ensure_no_user_ports_on_subnet(context, subnet.id)
|
|
net_allocs = (context.session.query(models_v2.IPAllocation.port_id).
|
|
filter_by(subnet_id=subnet.id))
|
|
port_ids_on_net = [ipal.port_id for ipal in net_allocs]
|
|
for port_id in port_ids_on_net:
|
|
self._remove_subnet_from_port(context, subnet.id, port_id,
|
|
auto_subnet=is_auto_addr_subnet)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def delete_subnet(self, context, id):
|
|
LOG.debug("Deleting subnet %s", id)
|
|
# Make sure the subnet isn't used by other resources
|
|
_check_subnet_not_used(context, id)
|
|
subnet = self._get_subnet_object(context, id)
|
|
registry.publish(resources.SUBNET,
|
|
events.PRECOMMIT_DELETE_ASSOCIATIONS,
|
|
self,
|
|
payload=events.DBEventPayload(context,
|
|
resource_id=subnet.id))
|
|
self._remove_subnet_ip_allocations_from_ports(context, subnet)
|
|
self._delete_subnet(context, subnet)
|
|
|
|
def _delete_subnet(self, context, subnet):
|
|
with db_api.exc_to_retry(sql_exc.IntegrityError), \
|
|
db_api.CONTEXT_WRITER.using(context):
|
|
registry.notify(resources.SUBNET, events.PRECOMMIT_DELETE,
|
|
self, context=context, subnet_id=subnet.id)
|
|
subnet.delete()
|
|
# Delete related ipam subnet manually,
|
|
# since there is no FK relationship
|
|
self.ipam.delete_subnet(context, subnet.id)
|
|
registry.notify(resources.SUBNET, events.AFTER_DELETE,
|
|
self, context=context, subnet=subnet.to_dict())
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def get_subnet(self, context, id, fields=None):
|
|
subnet_obj = self._get_subnet_object(context, id)
|
|
return self._make_subnet_dict(subnet_obj, fields, context=context)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def get_subnets(self, context, filters=None, fields=None,
|
|
sorts=None, limit=None, marker=None,
|
|
page_reverse=False):
|
|
subnet_objs = self._get_subnets(context, filters, fields, sorts, limit,
|
|
marker, page_reverse)
|
|
return [
|
|
self._make_subnet_dict(subnet_object, fields, context)
|
|
for subnet_object in subnet_objs
|
|
]
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def get_subnets_count(self, context, filters=None):
|
|
filters = filters or {}
|
|
return subnet_obj.Subnet.count(context, validate_filters=False,
|
|
**filters)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def get_subnets_by_network(self, context, network_id):
|
|
return [self._make_subnet_dict(subnet_obj) for subnet_obj in
|
|
self._get_subnets_by_network(context, network_id)]
|
|
|
|
def _validate_address_scope_id(self, context, address_scope_id,
|
|
subnetpool_id, sp_prefixes, ip_version):
|
|
"""Validate the address scope before associating.
|
|
|
|
Subnetpool can associate with an address scope if
|
|
- the tenant user is the owner of both the subnetpool and
|
|
address scope
|
|
- the admin is associating the subnetpool with the shared
|
|
address scope
|
|
- there is no prefix conflict with the existing subnetpools
|
|
associated with the address scope.
|
|
- the address family of the subnetpool and address scope
|
|
are the same
|
|
"""
|
|
if not validators.is_attr_set(address_scope_id):
|
|
return
|
|
|
|
if not self.is_address_scope_owned_by_tenant(context,
|
|
address_scope_id):
|
|
raise exc.IllegalSubnetPoolAssociationToAddressScope(
|
|
subnetpool_id=subnetpool_id, address_scope_id=address_scope_id)
|
|
|
|
as_ip_version = self.get_ip_version_for_address_scope(context,
|
|
address_scope_id)
|
|
|
|
if ip_version != as_ip_version:
|
|
raise exc.IllegalSubnetPoolIpVersionAssociationToAddressScope(
|
|
subnetpool_id=subnetpool_id, address_scope_id=address_scope_id,
|
|
ip_version=as_ip_version)
|
|
|
|
self._check_subnetpool_address_scope_network_affinity(
|
|
context, subnetpool_id, ip_version)
|
|
|
|
subnetpools = subnetpool_obj.SubnetPool.get_objects(
|
|
context, address_scope_id=address_scope_id)
|
|
|
|
new_set = netaddr.IPSet(sp_prefixes)
|
|
for sp in subnetpools:
|
|
if sp.id == subnetpool_id:
|
|
continue
|
|
sp_set = netaddr.IPSet(sp.prefixes)
|
|
if sp_set.intersection(new_set):
|
|
raise exc.AddressScopePrefixConflict()
|
|
|
|
def _check_subnetpool_address_scope_network_affinity(self, context,
|
|
subnetpool_id,
|
|
ip_version):
|
|
"""Check whether updating a subnet pool's address scope is allowed.
|
|
|
|
- Identify the subnets that would be re-scoped
|
|
- Identify the networks that would be affected by re-scoping
|
|
- Find all subnets associated with the affected networks
|
|
- Perform set difference (all - to_be_rescoped)
|
|
- If the set difference yields non-zero result size, re-scoping the
|
|
subnet pool will leave subnets in different address scopes and result
|
|
in address scope / network affinity violations so raise an exception to
|
|
block the operation.
|
|
"""
|
|
|
|
# TODO(tidwellr) potentially lots of subnets here, optimize this code
|
|
subnets_to_rescope = self._get_subnets_by_subnetpool(context,
|
|
subnetpool_id)
|
|
rescoped_subnet_ids = set()
|
|
affected_source_network_ids = set()
|
|
for subnet in subnets_to_rescope:
|
|
rescoped_subnet_ids.add(subnet.id)
|
|
affected_source_network_ids.add(subnet.network_id)
|
|
|
|
all_network_subnets = subnet_obj.Subnet.get_objects(
|
|
context,
|
|
network_id=affected_source_network_ids,
|
|
ip_version=ip_version)
|
|
all_affected_subnet_ids = set(
|
|
[subnet.id for subnet in all_network_subnets])
|
|
|
|
# Use set difference to identify the subnets that would be
|
|
# violating address scope affinity constraints if the subnet
|
|
# pool's address scope was changed.
|
|
violations = all_affected_subnet_ids.difference(rescoped_subnet_ids)
|
|
if violations:
|
|
raise addr_scope_exc.NetworkAddressScopeAffinityError()
|
|
|
|
def _check_subnetpool_update_allowed(self, context, subnetpool_id,
|
|
address_scope_id):
|
|
"""Check if the subnetpool can be updated or not.
|
|
|
|
If the subnetpool is associated to a shared address scope not owned
|
|
by the tenant, then the subnetpool cannot be updated.
|
|
"""
|
|
|
|
if not self.is_address_scope_owned_by_tenant(context,
|
|
address_scope_id):
|
|
msg = _("subnetpool %(subnetpool_id)s cannot be updated when"
|
|
" associated with shared address scope "
|
|
"%(address_scope_id)s") % {
|
|
'subnetpool_id': subnetpool_id,
|
|
'address_scope_id': address_scope_id}
|
|
raise exc.IllegalSubnetPoolUpdate(reason=msg)
|
|
|
|
def _check_default_subnetpool_exists(self, context, ip_version):
|
|
"""Check if a default already exists for the given IP version.
|
|
|
|
There can only be one default subnetpool for each IP family. Raise an
|
|
InvalidInput error if a default has already been set.
|
|
"""
|
|
if self.get_default_subnetpool(context, ip_version):
|
|
msg = _("A default subnetpool for this IP family has already "
|
|
"been set. Only one default may exist per IP family")
|
|
raise exc.InvalidInput(error_message=msg)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def create_subnetpool(self, context, subnetpool):
|
|
sp = subnetpool['subnetpool']
|
|
sp_reader = subnet_alloc.SubnetPoolReader(sp)
|
|
if sp_reader.is_default:
|
|
self._check_default_subnetpool_exists(context,
|
|
sp_reader.ip_version)
|
|
self._validate_address_scope_id(context, sp_reader.address_scope_id,
|
|
sp_reader.id, sp_reader.prefixes,
|
|
sp_reader.ip_version)
|
|
pool_args = {'project_id': sp['tenant_id'],
|
|
'id': sp_reader.id,
|
|
'name': sp_reader.name,
|
|
'ip_version': sp_reader.ip_version,
|
|
'default_prefixlen':
|
|
sp_reader.default_prefixlen,
|
|
'min_prefixlen': sp_reader.min_prefixlen,
|
|
'max_prefixlen': sp_reader.max_prefixlen,
|
|
'is_default': sp_reader.is_default,
|
|
'shared': sp_reader.shared,
|
|
'default_quota': sp_reader.default_quota,
|
|
'address_scope_id': sp_reader.address_scope_id,
|
|
'description': sp_reader.description,
|
|
'prefixes': sp_reader.prefixes}
|
|
subnetpool = subnetpool_obj.SubnetPool(context, **pool_args)
|
|
subnetpool.create()
|
|
|
|
return self._make_subnetpool_dict(subnetpool.db_obj)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def update_subnetpool(self, context, id, subnetpool):
|
|
new_sp = subnetpool['subnetpool']
|
|
|
|
with db_api.CONTEXT_WRITER.using(context):
|
|
orig_sp = self._get_subnetpool(context, id=id)
|
|
updated = _update_subnetpool_dict(orig_sp, new_sp)
|
|
reader = subnet_alloc.SubnetPoolReader(updated)
|
|
if reader.is_default and not orig_sp.is_default:
|
|
self._check_default_subnetpool_exists(context,
|
|
reader.ip_version)
|
|
if orig_sp.address_scope_id:
|
|
self._check_subnetpool_update_allowed(context, id,
|
|
orig_sp.address_scope_id)
|
|
|
|
self._validate_address_scope_id(context, reader.address_scope_id,
|
|
id, reader.prefixes,
|
|
reader.ip_version)
|
|
address_scope_changed = (
|
|
orig_sp.address_scope_id != reader.address_scope_id)
|
|
|
|
orig_sp.update_fields(reader.subnetpool)
|
|
orig_sp.update()
|
|
|
|
if address_scope_changed:
|
|
# Notify about the update of subnetpool's address scope
|
|
registry.publish(resources.SUBNETPOOL_ADDRESS_SCOPE,
|
|
events.AFTER_UPDATE,
|
|
self.update_subnetpool,
|
|
payload=events.DBEventPayload(
|
|
context, resource_id=id))
|
|
|
|
for key in ['min_prefixlen', 'max_prefixlen', 'default_prefixlen']:
|
|
updated['key'] = str(updated[key])
|
|
resource_extend.apply_funcs(subnetpool_def.COLLECTION_NAME,
|
|
updated, orig_sp.db_obj)
|
|
return updated
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def get_subnetpool(self, context, id, fields=None):
|
|
subnetpool = self._get_subnetpool(context, id)
|
|
return self._make_subnetpool_dict(subnetpool.db_obj, fields)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def get_subnetpools(self, context, filters=None, fields=None,
|
|
sorts=None, limit=None, marker=None,
|
|
page_reverse=False):
|
|
pager = base_obj.Pager(sorts, limit, page_reverse, marker)
|
|
filters = filters or {}
|
|
subnetpools = subnetpool_obj.SubnetPool.get_objects(
|
|
context, _pager=pager, validate_filters=False, **filters)
|
|
return [
|
|
self._make_subnetpool_dict(pool.db_obj, fields)
|
|
for pool in subnetpools
|
|
]
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def get_default_subnetpool(self, context, ip_version):
|
|
"""Retrieve the default subnetpool for the given IP version."""
|
|
filters = {'is_default': True,
|
|
'ip_version': ip_version}
|
|
subnetpool = self.get_subnetpools(context, filters=filters)
|
|
if subnetpool:
|
|
return subnetpool[0]
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def delete_subnetpool(self, context, id):
|
|
with db_api.CONTEXT_WRITER.using(context):
|
|
subnetpool = self._get_subnetpool(context, id=id)
|
|
if subnet_obj.Subnet.objects_exist(context, subnetpool_id=id):
|
|
reason = _("Subnet pool has existing allocations")
|
|
raise exc.SubnetPoolDeleteError(reason=reason)
|
|
subnetpool.delete()
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def onboard_network_subnets(self, context, subnetpool_id, network_info):
|
|
network_id = network_info.get('network_id')
|
|
if not validators.is_attr_set(network_id):
|
|
msg = _("network_id must be specified.")
|
|
raise exc.InvalidInput(error_message=msg)
|
|
if not network_obj.Network.objects_exist(context, id=network_id):
|
|
raise exc.NetworkNotFound(net_id=network_id)
|
|
|
|
subnetpool = subnetpool_obj.SubnetPool.get_object(context,
|
|
id=subnetpool_id)
|
|
if not subnetpool:
|
|
raise exc.SubnetPoolNotFound(subnetpool_id=id)
|
|
|
|
subnets_to_onboard = subnet_obj.Subnet.get_objects(
|
|
context,
|
|
network_id=network_id,
|
|
ip_version=subnetpool.ip_version)
|
|
|
|
self._onboard_network_subnets(context, subnets_to_onboard, subnetpool)
|
|
|
|
if subnetpool.address_scope_id:
|
|
# Notify all affected routers of any address scope changes
|
|
registry.publish(resources.SUBNETPOOL_ADDRESS_SCOPE,
|
|
events.AFTER_UPDATE,
|
|
self.onboard_network_subnets,
|
|
payload=events.DBEventPayload(
|
|
context, resource_id=subnetpool_id))
|
|
|
|
onboard_info = []
|
|
for subnet in subnets_to_onboard:
|
|
onboard_info.append({'id': subnet.id, 'cidr': subnet.cidr})
|
|
|
|
return onboard_info
|
|
|
|
def _onboard_network_subnets(self, context, subnets_to_onboard,
|
|
subnetpool):
|
|
allocated_prefix_set = netaddr.IPSet(
|
|
[x.cidr for x in subnet_obj.Subnet.get_objects(
|
|
context,
|
|
subnetpool_id=subnetpool.id)])
|
|
prefixes_to_add = []
|
|
|
|
for subnet in subnets_to_onboard:
|
|
to_onboard_ipset = netaddr.IPSet([subnet.cidr])
|
|
if to_onboard_ipset & allocated_prefix_set:
|
|
args = {'subnet_id': subnet.id,
|
|
'cidr': subnet.cidr,
|
|
'subnetpool_id': subnetpool.id}
|
|
msg = _('Onboarding subnet %(subnet_id)s: %(cidr)s conflicts '
|
|
'with allocated prefixes in subnet pool '
|
|
'%(subnetpool_id)s') % args
|
|
raise exc.IllegalSubnetPoolUpdate(reason=msg)
|
|
prefixes_to_add.append(subnet.cidr)
|
|
|
|
with db_api.CONTEXT_WRITER.using(context):
|
|
new_sp_prefixes = subnetpool.prefixes + prefixes_to_add
|
|
sp_update_req = {'subnetpool': {'prefixes': new_sp_prefixes}}
|
|
|
|
self.update_subnetpool(context, subnetpool.id, sp_update_req)
|
|
for subnet in subnets_to_onboard:
|
|
subnet.subnetpool_id = subnetpool.id
|
|
subnet.update()
|
|
|
|
def _check_mac_addr_update(self, context, port, new_mac, device_owner):
|
|
if (device_owner and
|
|
device_owner.startswith(
|
|
constants.DEVICE_OWNER_NETWORK_PREFIX)):
|
|
raise exc.UnsupportedPortDeviceOwner(
|
|
op=_("mac address update"), port_id=id,
|
|
device_owner=device_owner)
|
|
|
|
def _create_db_port_obj(self, context, port_data):
|
|
mac_address = port_data.pop('mac_address', None)
|
|
if mac_address:
|
|
if self._is_mac_in_use(context, port_data['network_id'],
|
|
mac_address):
|
|
raise exc.MacAddressInUse(net_id=port_data['network_id'],
|
|
mac=mac_address)
|
|
else:
|
|
mac_address = self._generate_macs()[0]
|
|
db_port = models_v2.Port(mac_address=mac_address, **port_data)
|
|
context.session.add(db_port)
|
|
return db_port
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def create_port(self, context, port):
|
|
db_port = self.create_port_db(context, port)
|
|
return self._make_port_dict(db_port, process_extensions=False)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def create_port_bulk(self, context, ports):
|
|
return self._create_bulk('port', context, ports)
|
|
|
|
def create_port_db(self, context, port):
|
|
p = port['port']
|
|
port_id = p.get('id') or uuidutils.generate_uuid()
|
|
network_id = p['network_id']
|
|
if p.get('device_owner'):
|
|
self._enforce_device_owner_not_router_intf_or_device_id(
|
|
context, p.get('device_owner'), p.get('device_id'),
|
|
p['tenant_id'])
|
|
|
|
port_data = dict(tenant_id=p['tenant_id'],
|
|
name=p['name'],
|
|
id=port_id,
|
|
network_id=network_id,
|
|
admin_state_up=p['admin_state_up'],
|
|
status=p.get('status', constants.PORT_STATUS_ACTIVE),
|
|
device_id=p['device_id'],
|
|
device_owner=p['device_owner'],
|
|
description=p.get('description'))
|
|
if p.get('mac_address') is not constants.ATTR_NOT_SPECIFIED:
|
|
port_data['mac_address'] = p.get('mac_address')
|
|
with db_api.CONTEXT_WRITER.using(context):
|
|
# Ensure that the network exists.
|
|
self._get_network(context, network_id)
|
|
|
|
# Create the port
|
|
db_port = self._create_db_port_obj(context, port_data)
|
|
p['mac_address'] = db_port['mac_address']
|
|
|
|
try:
|
|
self.ipam.allocate_ips_for_port_and_store(
|
|
context, port, port_id)
|
|
db_port['ip_allocation'] = (ipalloc_apidef.
|
|
IP_ALLOCATION_IMMEDIATE)
|
|
except ipam_exc.DeferIpam:
|
|
db_port['ip_allocation'] = (ipalloc_apidef.
|
|
IP_ALLOCATION_DEFERRED)
|
|
fixed_ips = p['fixed_ips']
|
|
if validators.is_attr_set(fixed_ips) and not fixed_ips:
|
|
# [] was passed explicitly as fixed_ips. An unaddressed port.
|
|
db_port['ip_allocation'] = ipalloc_apidef.IP_ALLOCATION_NONE
|
|
|
|
return db_port
|
|
|
|
def _validate_port_for_update(self, context, db_port, new_port, new_mac):
|
|
changed_owner = 'device_owner' in new_port
|
|
current_owner = (new_port.get('device_owner') or
|
|
db_port['device_owner'])
|
|
changed_device_id = new_port.get('device_id') != db_port['device_id']
|
|
current_device_id = new_port.get('device_id') or db_port['device_id']
|
|
|
|
if current_owner and changed_device_id or changed_owner:
|
|
self._enforce_device_owner_not_router_intf_or_device_id(
|
|
context, current_owner, current_device_id,
|
|
db_port['tenant_id'])
|
|
|
|
if new_mac and new_mac != db_port['mac_address']:
|
|
self._check_mac_addr_update(context, db_port,
|
|
new_mac, current_owner)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def update_port(self, context, id, port):
|
|
new_port = port['port']
|
|
|
|
with db_api.CONTEXT_WRITER.using(context):
|
|
db_port = self._get_port(context, id)
|
|
new_mac = new_port.get('mac_address')
|
|
self._validate_port_for_update(context, db_port, new_port, new_mac)
|
|
# Note: _make_port_dict is called here to load extension data
|
|
# (specifically host binding). The IPAM plugin is separate from
|
|
# the core plugin, so extensions are not loaded.
|
|
#
|
|
# The IPAM code could cheat and get it directly from db_port but it
|
|
# would have to know about the implementation (remember ml2 has its
|
|
# own port binding schema that differs from the generic one)
|
|
#
|
|
# This code could extract just the port binding host here and pass
|
|
# that in. The problem is that db_base_plugin_common shouldn't
|
|
# know anything about port binding. This compromise sends IPAM a
|
|
# port_dict with all of the extension data loaded.
|
|
try:
|
|
self.ipam.update_port(
|
|
context,
|
|
old_port_db=db_port,
|
|
old_port=self._make_port_dict(db_port),
|
|
new_port=new_port)
|
|
except ipam_exc.IpAddressAllocationNotFound as e:
|
|
# If a port update and a subnet delete interleave, there is a
|
|
# chance that the IPAM update operation raises this exception.
|
|
# Rather than throwing that up to the user under some sort of
|
|
# conflict, bubble up a retry instead that should bring things
|
|
# back to sanity.
|
|
raise os_db_exc.RetryRequest(e)
|
|
except ipam_exc.IPAddressChangeNotAllowed as e:
|
|
raise exc.BadRequest(resource='ports', msg=e)
|
|
return self._make_port_dict(db_port)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def delete_port(self, context, id):
|
|
with db_api.CONTEXT_WRITER.using(context):
|
|
self.ipam.delete_port(context, id)
|
|
|
|
def delete_ports_by_device_id(self, context, device_id, network_id=None):
|
|
with db_api.CONTEXT_READER.using(context):
|
|
query = (context.session.query(models_v2.Port.id)
|
|
.enable_eagerloads(False)
|
|
.filter(models_v2.Port.device_id == device_id))
|
|
if network_id:
|
|
query = query.filter(models_v2.Port.network_id == network_id)
|
|
port_ids = [p[0] for p in query]
|
|
for port_id in port_ids:
|
|
try:
|
|
self.delete_port(context, port_id)
|
|
except exc.PortNotFound:
|
|
# Don't raise if something else concurrently deleted the port
|
|
LOG.debug("Ignoring PortNotFound when deleting port '%s'. "
|
|
"The port has already been deleted.",
|
|
port_id)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
@db_api.CONTEXT_READER
|
|
def get_port(self, context, id, fields=None):
|
|
port = self._get_port(context, id)
|
|
return self._make_port_dict(port, fields)
|
|
|
|
def _get_ports_query(self, context, filters=None, *args, **kwargs):
|
|
Port = models_v2.Port
|
|
IPAllocation = models_v2.IPAllocation
|
|
|
|
limit = kwargs.pop('limit', None)
|
|
filters = filters or {}
|
|
fixed_ips = filters.pop('fixed_ips', {})
|
|
vif_type = filters.pop(portbindings_def.VIF_TYPE, None)
|
|
query = model_query.get_collection_query(context, Port,
|
|
filters=filters,
|
|
*args, **kwargs)
|
|
ip_addresses = fixed_ips.get('ip_address')
|
|
subnet_ids = fixed_ips.get('subnet_id')
|
|
if vif_type is not None:
|
|
query = query.filter(Port.port_bindings.any(vif_type=vif_type))
|
|
if ip_addresses:
|
|
query = query.filter(
|
|
Port.fixed_ips.any(IPAllocation.ip_address.in_(ip_addresses)))
|
|
if subnet_ids:
|
|
query = query.filter(
|
|
Port.fixed_ips.any(IPAllocation.subnet_id.in_(subnet_ids)))
|
|
if limit:
|
|
query = query.limit(limit)
|
|
return query
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def get_ports(self, context, filters=None, fields=None,
|
|
sorts=None, limit=None, marker=None,
|
|
page_reverse=False):
|
|
marker_obj = ndb_utils.get_marker_obj(self, context, 'port',
|
|
limit, marker)
|
|
query = self._get_ports_query(context, filters=filters,
|
|
sorts=sorts, limit=limit,
|
|
marker_obj=marker_obj,
|
|
page_reverse=page_reverse)
|
|
items = [self._make_port_dict(c, fields, bulk=True) for c in query]
|
|
# TODO(obondarev): use neutron_lib constant
|
|
resource_extend.apply_funcs('ports_bulk', items, None)
|
|
if limit and page_reverse:
|
|
items.reverse()
|
|
return items
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def get_ports_count(self, context, filters=None):
|
|
return self._get_ports_query(context, filters).count()
|
|
|
|
def _enforce_device_owner_not_router_intf_or_device_id(self, context,
|
|
device_owner,
|
|
device_id,
|
|
tenant_id):
|
|
"""Prevent tenants from replacing the device id of router ports with
|
|
a router uuid belonging to another tenant.
|
|
"""
|
|
if device_owner not in constants.ROUTER_INTERFACE_OWNERS:
|
|
return
|
|
if not context.is_admin:
|
|
# check to make sure device_id does not match another tenants
|
|
# router.
|
|
if device_id:
|
|
if hasattr(self, 'get_router'):
|
|
try:
|
|
ctx_admin = context.elevated()
|
|
router = self.get_router(ctx_admin, device_id)
|
|
except l3_exc.RouterNotFound:
|
|
return
|
|
else:
|
|
l3plugin = directory.get_plugin(plugin_constants.L3)
|
|
if l3plugin:
|
|
try:
|
|
ctx_admin = context.elevated()
|
|
router = l3plugin.get_router(ctx_admin,
|
|
device_id)
|
|
except l3_exc.RouterNotFound:
|
|
return
|
|
else:
|
|
# raise as extension doesn't support L3 anyways.
|
|
raise exc.DeviceIDNotOwnedByTenant(
|
|
device_id=device_id)
|
|
if tenant_id != router['tenant_id']:
|
|
raise exc.DeviceIDNotOwnedByTenant(device_id=device_id)
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def add_prefixes(self, context, subnetpool_id, body):
|
|
prefixes = subnetpool_prefix_ops.get_operation_request_body(body)
|
|
with db_api.CONTEXT_WRITER.using(context):
|
|
subnetpool = subnetpool_obj.SubnetPool.get_object(
|
|
context, id=subnetpool_id)
|
|
|
|
if not subnetpool:
|
|
raise exc.SubnetPoolNotFound(subnetpool_id=id)
|
|
if len(prefixes) == 0:
|
|
# No prefixes were included in the request, simply return
|
|
return {'prefixes': subnetpool.prefixes}
|
|
|
|
new_sp_prefixes = subnetpool.prefixes + prefixes
|
|
sp_update_req = {'subnetpool': {'prefixes': new_sp_prefixes}}
|
|
sp = self.update_subnetpool(context, subnetpool_id, sp_update_req)
|
|
return {'prefixes': sp['prefixes']}
|
|
|
|
@db_api.retry_if_session_inactive()
|
|
def remove_prefixes(self, context, subnetpool_id, body):
|
|
prefixes = subnetpool_prefix_ops.get_operation_request_body(body)
|
|
with db_api.CONTEXT_WRITER.using(context):
|
|
subnetpool = subnetpool_obj.SubnetPool.get_object(
|
|
context, id=subnetpool_id)
|
|
if not subnetpool:
|
|
raise exc.SubnetPoolNotFound(subnetpool_id=id)
|
|
if len(prefixes) == 0:
|
|
# No prefixes were included in the request, simply return
|
|
return {'prefixes': subnetpool.prefixes}
|
|
|
|
all_prefix_set = netaddr.IPSet(subnetpool.prefixes)
|
|
removal_prefix_set = netaddr.IPSet([x for x in prefixes])
|
|
if all_prefix_set.isdisjoint(removal_prefix_set):
|
|
# The prefixes requested for removal are not in the prefix
|
|
# list making this a no-op, so simply return.
|
|
return {'prefixes': subnetpool.prefixes}
|
|
|
|
subnets = subnet_obj.Subnet.get_objects(
|
|
context, subnetpool_id=subnetpool_id)
|
|
allocated_prefix_set = netaddr.IPSet([x.cidr for x in subnets])
|
|
|
|
if not allocated_prefix_set.isdisjoint(removal_prefix_set):
|
|
# One or more of the prefixes requested for removal have
|
|
# been allocated by a real subnet, raise an exception to
|
|
# indicate this.
|
|
msg = _("One or more the prefixes to be removed is in use "
|
|
"by a subnet.")
|
|
raise exc.IllegalSubnetPoolPrefixUpdate(msg=msg)
|
|
|
|
new_prefixes = all_prefix_set.difference(removal_prefix_set)
|
|
new_prefixes.compact()
|
|
subnetpool.prefixes = [str(x) for x in new_prefixes.iter_cidrs()]
|
|
subnetpool.update()
|
|
return {'prefixes': subnetpool.prefixes}
|