1dab002ff5
This patch adds a semaphore for serializing the delete port API calls and update_port_status calls to avoid simultaneous attempts to acquire SQL update locks on the port table from the same thread pool. This semaphore has been introduced to avoid undesired eventlet yields which trigger 'lock wait timeout' errors in the DB backend; it should have a negligible impact on the overall performance. Change-Id: I0ec947086e533945942ae93402943dec69b218ef Partial-Bug: 1283522
772 lines
35 KiB
Python
772 lines
35 KiB
Python
# Copyright (c) 2013 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 contextlib
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from oslo.config import cfg
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from sqlalchemy import exc as sql_exc
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from sqlalchemy.orm import exc as sa_exc
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from neutron.agent import securitygroups_rpc as sg_rpc
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from neutron.api.rpc.agentnotifiers import dhcp_rpc_agent_api
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from neutron.api.v2 import attributes
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from neutron.common import constants as const
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from neutron.common import exceptions as exc
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from neutron.common import topics
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from neutron.db import agentschedulers_db
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from neutron.db import allowedaddresspairs_db as addr_pair_db
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from neutron.db import db_base_plugin_v2
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from neutron.db import external_net_db
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from neutron.db import extradhcpopt_db
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from neutron.db import models_v2
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from neutron.db import quota_db # noqa
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from neutron.db import securitygroups_rpc_base as sg_db_rpc
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from neutron.extensions import allowedaddresspairs as addr_pair
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from neutron.extensions import extra_dhcp_opt as edo_ext
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from neutron.extensions import multiprovidernet as mpnet
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from neutron.extensions import portbindings
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from neutron.extensions import providernet as provider
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from neutron import manager
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from neutron.openstack.common import db as os_db
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from neutron.openstack.common import excutils
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from neutron.openstack.common import importutils
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from neutron.openstack.common import jsonutils
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from neutron.openstack.common import lockutils
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from neutron.openstack.common import log
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from neutron.openstack.common import rpc as c_rpc
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from neutron.plugins.common import constants as service_constants
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from neutron.plugins.ml2.common import exceptions as ml2_exc
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from neutron.plugins.ml2 import config # noqa
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from neutron.plugins.ml2 import db
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from neutron.plugins.ml2 import driver_api as api
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from neutron.plugins.ml2 import driver_context
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from neutron.plugins.ml2 import managers
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from neutron.plugins.ml2 import models
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from neutron.plugins.ml2 import rpc
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LOG = log.getLogger(__name__)
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# REVISIT(rkukura): Move this and other network_type constants to
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# providernet.py?
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TYPE_MULTI_SEGMENT = 'multi-segment'
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class Ml2Plugin(db_base_plugin_v2.NeutronDbPluginV2,
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external_net_db.External_net_db_mixin,
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sg_db_rpc.SecurityGroupServerRpcMixin,
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agentschedulers_db.DhcpAgentSchedulerDbMixin,
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addr_pair_db.AllowedAddressPairsMixin,
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extradhcpopt_db.ExtraDhcpOptMixin):
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"""Implement the Neutron L2 abstractions using modules.
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Ml2Plugin is a Neutron plugin based on separately extensible sets
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of network types and mechanisms for connecting to networks of
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those types. The network types and mechanisms are implemented as
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drivers loaded via Python entry points. Networks can be made up of
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multiple segments (not yet fully implemented).
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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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# List of supported extensions
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_supported_extension_aliases = ["provider", "external-net", "binding",
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"quotas", "security-group", "agent",
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"dhcp_agent_scheduler",
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"multi-provider", "allowed-address-pairs",
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"extra_dhcp_opt"]
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@property
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def supported_extension_aliases(self):
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if not hasattr(self, '_aliases'):
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aliases = self._supported_extension_aliases[:]
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sg_rpc.disable_security_group_extension_if_noop_driver(aliases)
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self._aliases = aliases
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return self._aliases
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def __init__(self):
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# First load drivers, then initialize DB, then initialize drivers
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self.type_manager = managers.TypeManager()
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self.mechanism_manager = managers.MechanismManager()
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super(Ml2Plugin, self).__init__()
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self.type_manager.initialize()
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self.mechanism_manager.initialize()
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# bulk support depends on the underlying drivers
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self.__native_bulk_support = self.mechanism_manager.native_bulk_support
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self._setup_rpc()
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# REVISIT(rkukura): Use stevedore for these?
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self.network_scheduler = importutils.import_object(
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cfg.CONF.network_scheduler_driver
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)
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LOG.info(_("Modular L2 Plugin initialization complete"))
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def _setup_rpc(self):
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self.notifier = rpc.AgentNotifierApi(topics.AGENT)
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self.agent_notifiers[const.AGENT_TYPE_DHCP] = (
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dhcp_rpc_agent_api.DhcpAgentNotifyAPI()
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)
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def start_rpc_listener(self):
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self.callbacks = rpc.RpcCallbacks(self.notifier, self.type_manager)
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self.topic = topics.PLUGIN
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self.conn = c_rpc.create_connection(new=True)
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self.dispatcher = self.callbacks.create_rpc_dispatcher()
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self.conn.create_consumer(self.topic, self.dispatcher,
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fanout=False)
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return self.conn.consume_in_thread()
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def _process_provider_segment(self, segment):
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network_type = self._get_attribute(segment, provider.NETWORK_TYPE)
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physical_network = self._get_attribute(segment,
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provider.PHYSICAL_NETWORK)
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segmentation_id = self._get_attribute(segment,
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provider.SEGMENTATION_ID)
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if attributes.is_attr_set(network_type):
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segment = {api.NETWORK_TYPE: network_type,
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api.PHYSICAL_NETWORK: physical_network,
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api.SEGMENTATION_ID: segmentation_id}
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self.type_manager.validate_provider_segment(segment)
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return segment
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msg = _("network_type required")
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raise exc.InvalidInput(error_message=msg)
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def _process_provider_create(self, network):
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segments = []
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if any(attributes.is_attr_set(network.get(f))
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for f in (provider.NETWORK_TYPE, provider.PHYSICAL_NETWORK,
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provider.SEGMENTATION_ID)):
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# Verify that multiprovider and provider attributes are not set
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# at the same time.
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if attributes.is_attr_set(network.get(mpnet.SEGMENTS)):
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raise mpnet.SegmentsSetInConjunctionWithProviders()
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network_type = self._get_attribute(network, provider.NETWORK_TYPE)
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physical_network = self._get_attribute(network,
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provider.PHYSICAL_NETWORK)
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segmentation_id = self._get_attribute(network,
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provider.SEGMENTATION_ID)
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segments = [{provider.NETWORK_TYPE: network_type,
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provider.PHYSICAL_NETWORK: physical_network,
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provider.SEGMENTATION_ID: segmentation_id}]
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elif attributes.is_attr_set(network.get(mpnet.SEGMENTS)):
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segments = network[mpnet.SEGMENTS]
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else:
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return
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return [self._process_provider_segment(s) for s in segments]
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def _get_attribute(self, attrs, key):
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value = attrs.get(key)
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if value is attributes.ATTR_NOT_SPECIFIED:
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value = None
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return value
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def _extend_network_dict_provider(self, context, network):
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id = network['id']
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segments = db.get_network_segments(context.session, id)
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if not segments:
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LOG.error(_("Network %s has no segments"), id)
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network[provider.NETWORK_TYPE] = None
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network[provider.PHYSICAL_NETWORK] = None
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network[provider.SEGMENTATION_ID] = None
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elif len(segments) > 1:
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network[mpnet.SEGMENTS] = [
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{provider.NETWORK_TYPE: segment[api.NETWORK_TYPE],
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provider.PHYSICAL_NETWORK: segment[api.PHYSICAL_NETWORK],
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provider.SEGMENTATION_ID: segment[api.SEGMENTATION_ID]}
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for segment in segments]
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else:
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segment = segments[0]
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network[provider.NETWORK_TYPE] = segment[api.NETWORK_TYPE]
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network[provider.PHYSICAL_NETWORK] = segment[api.PHYSICAL_NETWORK]
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network[provider.SEGMENTATION_ID] = segment[api.SEGMENTATION_ID]
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def _filter_nets_provider(self, context, nets, filters):
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# TODO(rkukura): Implement filtering.
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return nets
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def _process_port_binding(self, mech_context, attrs):
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binding = mech_context._binding
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port = mech_context.current
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self._update_port_dict_binding(port, binding)
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host = attrs and attrs.get(portbindings.HOST_ID)
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host_set = attributes.is_attr_set(host)
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vnic_type = attrs and attrs.get(portbindings.VNIC_TYPE)
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vnic_type_set = attributes.is_attr_set(vnic_type)
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# CLI can't send {}, so treat None as {}
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profile = attrs and attrs.get(portbindings.PROFILE)
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profile_set = profile is not attributes.ATTR_NOT_SPECIFIED
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if profile_set and not profile:
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profile = {}
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if binding.vif_type != portbindings.VIF_TYPE_UNBOUND:
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if (not host_set and not vnic_type_set and not profile_set and
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binding.segment and
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self.mechanism_manager.validate_port_binding(mech_context)):
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return False
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self.mechanism_manager.unbind_port(mech_context)
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self._update_port_dict_binding(port, binding)
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# Return True only if an agent notification is needed.
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# This will happen if a new host, vnic_type, or profile was specified
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# that differs from the current one. Note that host_set is True
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# even if the host is an empty string
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ret_value = ((host_set and binding.get('host') != host) or
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(vnic_type_set and
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binding.get('vnic_type') != vnic_type) or
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(profile_set and self._get_profile(binding) != profile))
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if host_set:
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binding.host = host
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port[portbindings.HOST_ID] = host
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if vnic_type_set:
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binding.vnic_type = vnic_type
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port[portbindings.VNIC_TYPE] = vnic_type
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if profile_set:
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binding.profile = jsonutils.dumps(profile)
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if len(binding.profile) > models.BINDING_PROFILE_LEN:
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msg = _("binding:profile value too large")
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raise exc.InvalidInput(error_message=msg)
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port[portbindings.PROFILE] = profile
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# To try to [re]bind if host is non-empty.
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if binding.host:
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self.mechanism_manager.bind_port(mech_context)
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self._update_port_dict_binding(port, binding)
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return ret_value
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def _update_port_dict_binding(self, port, binding):
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port[portbindings.HOST_ID] = binding.host
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port[portbindings.VNIC_TYPE] = binding.vnic_type
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port[portbindings.PROFILE] = self._get_profile(binding)
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port[portbindings.VIF_TYPE] = binding.vif_type
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port[portbindings.VIF_DETAILS] = self._get_vif_details(binding)
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def _get_vif_details(self, binding):
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if binding.vif_details:
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try:
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return jsonutils.loads(binding.vif_details)
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except Exception:
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LOG.error(_("Serialized vif_details DB value '%(value)s' "
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"for port %(port)s is invalid"),
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{'value': binding.vif_details,
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'port': binding.port_id})
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return {}
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def _get_profile(self, binding):
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if binding.profile:
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try:
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return jsonutils.loads(binding.profile)
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except Exception:
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LOG.error(_("Serialized profile DB value '%(value)s' for "
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"port %(port)s is invalid"),
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{'value': binding.profile,
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'port': binding.port_id})
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return {}
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def _delete_port_binding(self, mech_context):
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binding = mech_context._binding
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port = mech_context.current
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self._update_port_dict_binding(port, binding)
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self.mechanism_manager.unbind_port(mech_context)
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self._update_port_dict_binding(port, binding)
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def _ml2_extend_port_dict_binding(self, port_res, port_db):
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# None when called during unit tests for other plugins.
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if port_db.port_binding:
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self._update_port_dict_binding(port_res, port_db.port_binding)
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db_base_plugin_v2.NeutronDbPluginV2.register_dict_extend_funcs(
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attributes.PORTS, ['_ml2_extend_port_dict_binding'])
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# Note - The following hook methods have "ml2" in their names so
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# that they are not called twice during unit tests due to global
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# registration of hooks in portbindings_db.py used by other
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# plugins.
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def _ml2_port_model_hook(self, context, original_model, query):
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query = query.outerjoin(models.PortBinding,
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(original_model.id ==
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models.PortBinding.port_id))
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return query
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def _ml2_port_result_filter_hook(self, query, filters):
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values = filters and filters.get(portbindings.HOST_ID, [])
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if not values:
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return query
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return query.filter(models.PortBinding.host.in_(values))
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db_base_plugin_v2.NeutronDbPluginV2.register_model_query_hook(
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models_v2.Port,
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"ml2_port_bindings",
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'_ml2_port_model_hook',
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None,
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'_ml2_port_result_filter_hook')
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def _notify_port_updated(self, mech_context):
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port = mech_context._port
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segment = mech_context.bound_segment
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if not segment:
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# REVISIT(rkukura): This should notify agent to unplug port
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network = mech_context.network.current
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LOG.warning(_("In _notify_port_updated(), no bound segment for "
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"port %(port_id)s on network %(network_id)s"),
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{'port_id': port['id'],
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'network_id': network['id']})
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return
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self.notifier.port_update(mech_context._plugin_context, port,
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segment[api.NETWORK_TYPE],
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segment[api.SEGMENTATION_ID],
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segment[api.PHYSICAL_NETWORK])
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# TODO(apech): Need to override bulk operations
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def create_network(self, context, network):
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net_data = network['network']
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segments = self._process_provider_create(net_data)
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tenant_id = self._get_tenant_id_for_create(context, net_data)
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session = context.session
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with session.begin(subtransactions=True):
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self._ensure_default_security_group(context, tenant_id)
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result = super(Ml2Plugin, self).create_network(context, network)
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network_id = result['id']
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self._process_l3_create(context, result, net_data)
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# REVISIT(rkukura): Consider moving all segment management
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# to TypeManager.
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if segments:
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for segment in segments:
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self.type_manager.reserve_provider_segment(session,
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segment)
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db.add_network_segment(session, network_id, segment)
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else:
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segment = self.type_manager.allocate_tenant_segment(session)
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db.add_network_segment(session, network_id, segment)
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self._extend_network_dict_provider(context, result)
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mech_context = driver_context.NetworkContext(self, context,
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result)
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self.mechanism_manager.create_network_precommit(mech_context)
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try:
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self.mechanism_manager.create_network_postcommit(mech_context)
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except ml2_exc.MechanismDriverError:
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with excutils.save_and_reraise_exception():
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LOG.error(_("mechanism_manager.create_network_postcommit "
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"failed, deleting network '%s'"), result['id'])
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self.delete_network(context, result['id'])
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return result
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def update_network(self, context, id, network):
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provider._raise_if_updates_provider_attributes(network['network'])
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session = context.session
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with session.begin(subtransactions=True):
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original_network = super(Ml2Plugin, self).get_network(context, id)
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updated_network = super(Ml2Plugin, self).update_network(context,
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id,
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network)
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self._process_l3_update(context, updated_network,
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network['network'])
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self._extend_network_dict_provider(context, updated_network)
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mech_context = driver_context.NetworkContext(
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self, context, updated_network,
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original_network=original_network)
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self.mechanism_manager.update_network_precommit(mech_context)
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# TODO(apech) - handle errors raised by update_network, potentially
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# by re-calling update_network with the previous attributes. For
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# now the error is propogated to the caller, which is expected to
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# either undo/retry the operation or delete the resource.
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self.mechanism_manager.update_network_postcommit(mech_context)
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return updated_network
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def get_network(self, context, id, fields=None):
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session = context.session
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with session.begin(subtransactions=True):
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result = super(Ml2Plugin, self).get_network(context, id, None)
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self._extend_network_dict_provider(context, result)
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return self._fields(result, fields)
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def get_networks(self, context, filters=None, fields=None,
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sorts=None, limit=None, marker=None, page_reverse=False):
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session = context.session
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with session.begin(subtransactions=True):
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nets = super(Ml2Plugin,
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self).get_networks(context, filters, None, sorts,
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limit, marker, page_reverse)
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for net in nets:
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self._extend_network_dict_provider(context, net)
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nets = self._filter_nets_provider(context, nets, filters)
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nets = self._filter_nets_l3(context, nets, filters)
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return [self._fields(net, fields) for net in nets]
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def delete_network(self, context, id):
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# REVISIT(rkukura) The super(Ml2Plugin, self).delete_network()
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# function is not used because it auto-deletes ports and
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# subnets from the DB without invoking the derived class's
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# delete_port() or delete_subnet(), preventing mechanism
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# drivers from being called. This approach should be revisited
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# when the API layer is reworked during icehouse.
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LOG.debug(_("Deleting network %s"), id)
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session = context.session
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while True:
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try:
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with session.begin(subtransactions=True):
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# Get ports to auto-delete.
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ports = (session.query(models_v2.Port).
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enable_eagerloads(False).
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filter_by(network_id=id).
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with_lockmode('update').all())
|
|
LOG.debug(_("Ports to auto-delete: %s"), ports)
|
|
only_auto_del = all(p.device_owner
|
|
in db_base_plugin_v2.
|
|
AUTO_DELETE_PORT_OWNERS
|
|
for p in ports)
|
|
if not only_auto_del:
|
|
LOG.debug(_("Tenant-owned ports exist"))
|
|
raise exc.NetworkInUse(net_id=id)
|
|
|
|
# Get subnets to auto-delete.
|
|
subnets = (session.query(models_v2.Subnet).
|
|
enable_eagerloads(False).
|
|
filter_by(network_id=id).
|
|
with_lockmode('update').all())
|
|
LOG.debug(_("Subnets to auto-delete: %s"), subnets)
|
|
|
|
if not (ports or subnets):
|
|
network = self.get_network(context, id)
|
|
mech_context = driver_context.NetworkContext(self,
|
|
context,
|
|
network)
|
|
self.mechanism_manager.delete_network_precommit(
|
|
mech_context)
|
|
|
|
record = self._get_network(context, id)
|
|
LOG.debug(_("Deleting network record %s"), record)
|
|
session.delete(record)
|
|
|
|
for segment in mech_context.network_segments:
|
|
self.type_manager.release_segment(session, segment)
|
|
|
|
# The segment records are deleted via cascade from the
|
|
# network record, so explicit removal is not necessary.
|
|
LOG.debug(_("Committing transaction"))
|
|
break
|
|
except os_db.exception.DBError as e:
|
|
if isinstance(e.inner_exception, sql_exc.IntegrityError):
|
|
msg = _("A concurrent port creation has occurred")
|
|
LOG.warning(msg)
|
|
continue
|
|
else:
|
|
raise
|
|
|
|
for port in ports:
|
|
try:
|
|
self.delete_port(context, port.id)
|
|
except Exception:
|
|
LOG.exception(_("Exception auto-deleting port %s"),
|
|
port.id)
|
|
raise
|
|
|
|
for subnet in subnets:
|
|
try:
|
|
self.delete_subnet(context, subnet.id)
|
|
except Exception:
|
|
LOG.exception(_("Exception auto-deleting subnet %s"),
|
|
subnet.id)
|
|
raise
|
|
|
|
try:
|
|
self.mechanism_manager.delete_network_postcommit(mech_context)
|
|
except ml2_exc.MechanismDriverError:
|
|
# TODO(apech) - One or more mechanism driver failed to
|
|
# delete the network. Ideally we'd notify the caller of
|
|
# the fact that an error occurred.
|
|
LOG.error(_("mechanism_manager.delete_network_postcommit failed"))
|
|
self.notifier.network_delete(context, id)
|
|
|
|
def create_subnet(self, context, subnet):
|
|
session = context.session
|
|
with session.begin(subtransactions=True):
|
|
result = super(Ml2Plugin, self).create_subnet(context, subnet)
|
|
mech_context = driver_context.SubnetContext(self, context, result)
|
|
self.mechanism_manager.create_subnet_precommit(mech_context)
|
|
|
|
try:
|
|
self.mechanism_manager.create_subnet_postcommit(mech_context)
|
|
except ml2_exc.MechanismDriverError:
|
|
with excutils.save_and_reraise_exception():
|
|
LOG.error(_("mechanism_manager.create_subnet_postcommit "
|
|
"failed, deleting subnet '%s'"), result['id'])
|
|
self.delete_subnet(context, result['id'])
|
|
return result
|
|
|
|
def update_subnet(self, context, id, subnet):
|
|
session = context.session
|
|
with session.begin(subtransactions=True):
|
|
original_subnet = super(Ml2Plugin, self).get_subnet(context, id)
|
|
updated_subnet = super(Ml2Plugin, self).update_subnet(
|
|
context, id, subnet)
|
|
mech_context = driver_context.SubnetContext(
|
|
self, context, updated_subnet, original_subnet=original_subnet)
|
|
self.mechanism_manager.update_subnet_precommit(mech_context)
|
|
|
|
# TODO(apech) - handle errors raised by update_subnet, potentially
|
|
# by re-calling update_subnet with the previous attributes. For
|
|
# now the error is propogated to the caller, which is expected to
|
|
# either undo/retry the operation or delete the resource.
|
|
self.mechanism_manager.update_subnet_postcommit(mech_context)
|
|
return updated_subnet
|
|
|
|
def delete_subnet(self, context, id):
|
|
# REVISIT(rkukura) The super(Ml2Plugin, self).delete_subnet()
|
|
# function is not used because it auto-deletes ports from the
|
|
# DB without invoking the derived class's delete_port(),
|
|
# preventing mechanism drivers from being called. This
|
|
# approach should be revisited when the API layer is reworked
|
|
# during icehouse.
|
|
|
|
LOG.debug(_("Deleting subnet %s"), id)
|
|
session = context.session
|
|
while True:
|
|
with session.begin(subtransactions=True):
|
|
subnet = self.get_subnet(context, id)
|
|
# Get ports to auto-delete.
|
|
allocated = (session.query(models_v2.IPAllocation).
|
|
filter_by(subnet_id=id).
|
|
join(models_v2.Port).
|
|
filter_by(network_id=subnet['network_id']).
|
|
with_lockmode('update').all())
|
|
LOG.debug(_("Ports to auto-delete: %s"), allocated)
|
|
only_auto_del = all(not a.port_id or
|
|
a.ports.device_owner in db_base_plugin_v2.
|
|
AUTO_DELETE_PORT_OWNERS
|
|
for a in allocated)
|
|
if not only_auto_del:
|
|
LOG.debug(_("Tenant-owned ports exist"))
|
|
raise exc.SubnetInUse(subnet_id=id)
|
|
|
|
if not allocated:
|
|
mech_context = driver_context.SubnetContext(self, context,
|
|
subnet)
|
|
self.mechanism_manager.delete_subnet_precommit(
|
|
mech_context)
|
|
|
|
LOG.debug(_("Deleting subnet record"))
|
|
record = self._get_subnet(context, id)
|
|
session.delete(record)
|
|
|
|
LOG.debug(_("Committing transaction"))
|
|
break
|
|
|
|
for a in allocated:
|
|
try:
|
|
self.delete_port(context, a.port_id)
|
|
except Exception:
|
|
LOG.exception(_("Exception auto-deleting port %s"),
|
|
a.port_id)
|
|
raise
|
|
|
|
try:
|
|
self.mechanism_manager.delete_subnet_postcommit(mech_context)
|
|
except ml2_exc.MechanismDriverError:
|
|
# TODO(apech) - One or more mechanism driver failed to
|
|
# delete the subnet. Ideally we'd notify the caller of
|
|
# the fact that an error occurred.
|
|
LOG.error(_("mechanism_manager.delete_subnet_postcommit failed"))
|
|
|
|
def create_port(self, context, port):
|
|
attrs = port['port']
|
|
attrs['status'] = const.PORT_STATUS_DOWN
|
|
|
|
session = context.session
|
|
with session.begin(subtransactions=True):
|
|
self._ensure_default_security_group_on_port(context, port)
|
|
sgids = self._get_security_groups_on_port(context, port)
|
|
dhcp_opts = port['port'].get(edo_ext.EXTRADHCPOPTS, [])
|
|
result = super(Ml2Plugin, self).create_port(context, port)
|
|
self._process_port_create_security_group(context, result, sgids)
|
|
network = self.get_network(context, result['network_id'])
|
|
mech_context = driver_context.PortContext(self, context, result,
|
|
network)
|
|
self._process_port_binding(mech_context, attrs)
|
|
result[addr_pair.ADDRESS_PAIRS] = (
|
|
self._process_create_allowed_address_pairs(
|
|
context, result,
|
|
attrs.get(addr_pair.ADDRESS_PAIRS)))
|
|
self._process_port_create_extra_dhcp_opts(context, result,
|
|
dhcp_opts)
|
|
self.mechanism_manager.create_port_precommit(mech_context)
|
|
|
|
try:
|
|
self.mechanism_manager.create_port_postcommit(mech_context)
|
|
except ml2_exc.MechanismDriverError:
|
|
with excutils.save_and_reraise_exception():
|
|
LOG.error(_("mechanism_manager.create_port_postcommit "
|
|
"failed, deleting port '%s'"), result['id'])
|
|
self.delete_port(context, result['id'])
|
|
self.notify_security_groups_member_updated(context, result)
|
|
return result
|
|
|
|
def update_port(self, context, id, port):
|
|
attrs = port['port']
|
|
need_port_update_notify = False
|
|
|
|
session = context.session
|
|
changed_fixed_ips = 'fixed_ips' in port['port']
|
|
with session.begin(subtransactions=True):
|
|
try:
|
|
port_db = (session.query(models_v2.Port).
|
|
enable_eagerloads(False).
|
|
filter_by(id=id).with_lockmode('update').one())
|
|
except sa_exc.NoResultFound:
|
|
raise exc.PortNotFound(port_id=id)
|
|
original_port = self._make_port_dict(port_db)
|
|
updated_port = super(Ml2Plugin, self).update_port(context, id,
|
|
port)
|
|
if addr_pair.ADDRESS_PAIRS in port['port']:
|
|
need_port_update_notify |= (
|
|
self.update_address_pairs_on_port(context, id, port,
|
|
original_port,
|
|
updated_port))
|
|
elif changed_fixed_ips:
|
|
self._check_fixed_ips_and_address_pairs_no_overlap(
|
|
context, updated_port)
|
|
need_port_update_notify |= self.update_security_group_on_port(
|
|
context, id, port, original_port, updated_port)
|
|
network = self.get_network(context, original_port['network_id'])
|
|
need_port_update_notify |= self._update_extra_dhcp_opts_on_port(
|
|
context, id, port, updated_port)
|
|
mech_context = driver_context.PortContext(
|
|
self, context, updated_port, network,
|
|
original_port=original_port)
|
|
need_port_update_notify |= self._process_port_binding(
|
|
mech_context, attrs)
|
|
self.mechanism_manager.update_port_precommit(mech_context)
|
|
|
|
# TODO(apech) - handle errors raised by update_port, potentially
|
|
# by re-calling update_port with the previous attributes. For
|
|
# now the error is propogated to the caller, which is expected to
|
|
# either undo/retry the operation or delete the resource.
|
|
self.mechanism_manager.update_port_postcommit(mech_context)
|
|
|
|
need_port_update_notify |= self.is_security_group_member_updated(
|
|
context, original_port, updated_port)
|
|
|
|
if original_port['admin_state_up'] != updated_port['admin_state_up']:
|
|
need_port_update_notify = True
|
|
|
|
if need_port_update_notify:
|
|
self._notify_port_updated(mech_context)
|
|
|
|
return updated_port
|
|
|
|
def delete_port(self, context, id, l3_port_check=True):
|
|
LOG.debug(_("Deleting port %s"), id)
|
|
l3plugin = manager.NeutronManager.get_service_plugins().get(
|
|
service_constants.L3_ROUTER_NAT)
|
|
if l3plugin and l3_port_check:
|
|
l3plugin.prevent_l3_port_deletion(context, id)
|
|
|
|
session = context.session
|
|
# REVISIT: Serialize this operation with a semaphore to prevent
|
|
# undesired eventlet yields leading to 'lock wait timeout' errors
|
|
with contextlib.nested(lockutils.lock('db-access'),
|
|
session.begin(subtransactions=True)):
|
|
try:
|
|
port_db = (session.query(models_v2.Port).
|
|
enable_eagerloads(False).
|
|
filter_by(id=id).with_lockmode('update').one())
|
|
except sa_exc.NoResultFound:
|
|
# the port existed when l3plugin.prevent_l3_port_deletion
|
|
# was called but now is already gone
|
|
LOG.debug(_("The port '%s' was deleted"), id)
|
|
return
|
|
port = self._make_port_dict(port_db)
|
|
|
|
network = self.get_network(context, port['network_id'])
|
|
mech_context = driver_context.PortContext(self, context, port,
|
|
network)
|
|
self.mechanism_manager.delete_port_precommit(mech_context)
|
|
self._delete_port_binding(mech_context)
|
|
self._delete_port_security_group_bindings(context, id)
|
|
LOG.debug(_("Calling base delete_port"))
|
|
if l3plugin:
|
|
l3plugin.disassociate_floatingips(context, id)
|
|
|
|
super(Ml2Plugin, self).delete_port(context, id)
|
|
|
|
try:
|
|
self.mechanism_manager.delete_port_postcommit(mech_context)
|
|
except ml2_exc.MechanismDriverError:
|
|
# TODO(apech) - One or more mechanism driver failed to
|
|
# delete the port. Ideally we'd notify the caller of the
|
|
# fact that an error occurred.
|
|
LOG.error(_("mechanism_manager.delete_port_postcommit failed"))
|
|
self.notify_security_groups_member_updated(context, port)
|
|
|
|
def update_port_status(self, context, port_id, status):
|
|
updated = False
|
|
session = context.session
|
|
# REVISIT: Serialize this operation with a semaphore to prevent
|
|
# undesired eventlet yields leading to 'lock wait timeout' errors
|
|
with contextlib.nested(lockutils.lock('db-access'),
|
|
session.begin(subtransactions=True)):
|
|
port = db.get_port(session, port_id)
|
|
if not port:
|
|
LOG.warning(_("Port %(port)s updated up by agent not found"),
|
|
{'port': port_id})
|
|
return False
|
|
if port.status != status:
|
|
original_port = self._make_port_dict(port)
|
|
port.status = status
|
|
updated_port = self._make_port_dict(port)
|
|
network = self.get_network(context,
|
|
original_port['network_id'])
|
|
mech_context = driver_context.PortContext(
|
|
self, context, updated_port, network,
|
|
original_port=original_port)
|
|
self.mechanism_manager.update_port_precommit(mech_context)
|
|
updated = True
|
|
|
|
if updated:
|
|
self.mechanism_manager.update_port_postcommit(mech_context)
|
|
|
|
return True
|
|
|
|
def port_bound_to_host(self, port_id, host):
|
|
port_host = db.get_port_binding_host(port_id)
|
|
return (port_host == host)
|