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OpenStack Study: portbindings_db.py**** CubicPower OpenStack Study ****
# vim: tabstop=4 shiftwidth=4 softtabstop=4 # Copyright 2013 IBM Corp. # All Rights Reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); you may # not use this file except in compliance with the License. You may obtain # a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the # License for the specific language governing permissions and limitations # under the License. # @author: Yong Sheng Gong, IBM, Corp. import sqlalchemy as sa from sqlalchemy import orm from neutron.api.v2 import attributes from neutron.db import db_base_plugin_v2 from neutron.db import model_base from neutron.db import models_v2 from neutron.db import portbindings_base from neutron.extensions import portbindings
**** CubicPower OpenStack Study **** class PortBindingPort(model_base.BASEV2): port_id = sa.Column(sa.String(36), sa.ForeignKey('ports.id', ondelete="CASCADE"), primary_key=True) host = sa.Column(sa.String(255), nullable=False) port = orm.relationship( models_v2.Port, backref=orm.backref("portbinding", lazy='joined', uselist=False, cascade='delete'))
**** CubicPower OpenStack Study **** class PortBindingMixin(portbindings_base.PortBindingBaseMixin): extra_binding_dict = None
**** CubicPower OpenStack Study **** def _port_model_hook(self, context, original_model, query): query = query.outerjoin(PortBindingPort, (original_model.id == PortBindingPort.port_id)) return query
**** CubicPower OpenStack Study **** def _port_result_filter_hook(self, query, filters): values = filters and filters.get(portbindings.HOST_ID, []) if not values: return query if len(values) == 1: query = query.filter(PortBindingPort.host == values[0]) else: query = query.filter(PortBindingPort.host.in_(values)) return query db_base_plugin_v2.NeutronDbPluginV2.register_model_query_hook( models_v2.Port, "portbindings_port", '_port_model_hook', None, '_port_result_filter_hook')
**** CubicPower OpenStack Study **** def _process_portbindings_create_and_update(self, context, port_data, port): binding_profile = port.get(portbindings.PROFILE) binding_profile_set = attributes.is_attr_set(binding_profile) if not binding_profile_set and binding_profile is not None: del port[portbindings.PROFILE] binding_vnic = port.get(portbindings.VNIC_TYPE) binding_vnic_set = attributes.is_attr_set(binding_vnic) if not binding_vnic_set and binding_vnic is not None: del port[portbindings.VNIC_TYPE] # REVISIT(irenab) Add support for vnic_type for plugins that # can handle more than one type. # Currently implemented for ML2 plugin that does not use # PortBindingMixin. host = port_data.get(portbindings.HOST_ID) host_set = attributes.is_attr_set(host) with context.session.begin(subtransactions=True): bind_port = context.session.query( PortBindingPort).filter_by(port_id=port['id']).first() if host_set: if not bind_port: context.session.add(PortBindingPort(port_id=port['id'], host=host)) else: bind_port.host = host else: host = (bind_port and bind_port.host or None) self._extend_port_dict_binding_host(port, host)
**** CubicPower OpenStack Study **** def get_port_host(self, context, port_id): with context.session.begin(subtransactions=True): bind_port = context.session.query( PortBindingPort).filter_by(port_id=port_id).first() return bind_port and bind_port.host or None
**** CubicPower OpenStack Study **** def _extend_port_dict_binding_host(self, port_res, host): super(PortBindingMixin, self).extend_port_dict_binding( port_res, None) port_res[portbindings.HOST_ID] = host
**** CubicPower OpenStack Study **** def extend_port_dict_binding(self, port_res, port_db): host = (port_db.portbinding and port_db.portbinding.host or None) self._extend_port_dict_binding_host(port_res, host) def _extend_port_dict_binding(plugin, port_res, port_db): if not isinstance(plugin, PortBindingMixin): return plugin.extend_port_dict_binding(port_res, port_db) # Register dict extend functions for ports db_base_plugin_v2.NeutronDbPluginV2.register_dict_extend_funcs( attributes.PORTS, [_extend_port_dict_binding])
**** CubicPower OpenStack Study **** def _extend_port_dict_binding(plugin, port_res, port_db): if not isinstance(plugin, PortBindingMixin): return plugin.extend_port_dict_binding(port_res, port_db) # Register dict extend functions for ports db_base_plugin_v2.NeutronDbPluginV2.register_dict_extend_funcs( attributes.PORTS, [_extend_port_dict_binding])
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