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OpenStack Study: driver.py**** CubicPower OpenStack Study ****
# vim: tabstop=4 shiftwidth=4 softtabstop=4 # # Copyright 2014 Big Switch Networks, Inc. # 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: Sumit Naiksatam, sumitnaiksatam@gmail.com, Big Switch Networks, Inc. # @author: Kevin Benton, Big Switch Networks, Inc. import copy import eventlet from oslo.config import cfg from neutron import context as ctx from neutron.extensions import portbindings from neutron.openstack.common import log from neutron.plugins.bigswitch import config as pl_config from neutron.plugins.bigswitch.plugin import NeutronRestProxyV2Base from neutron.plugins.bigswitch import servermanager from neutron.plugins.ml2 import driver_api as api LOG = log.getLogger(__name__)
**** CubicPower OpenStack Study **** class BigSwitchMechanismDriver(NeutronRestProxyV2Base,
api.MechanismDriver): """Mechanism Driver for Big Switch Networks Controller. This driver relays the network create, update, delete operations to the Big Switch Controller. """
**** CubicPower OpenStack Study **** def initialize(self, server_timeout=None): LOG.debug(_('Initializing driver')) # register plugin config opts pl_config.register_config() self.evpool = eventlet.GreenPool(cfg.CONF.RESTPROXY.thread_pool_size) # backend doesn't support bulk operations yet self.native_bulk_support = False # init network ctrl connections self.servers = servermanager.ServerPool(server_timeout) self.servers.get_topo_function = self._get_all_data self.servers.get_topo_function_args = {'get_ports': True, 'get_floating_ips': False, 'get_routers': False} self.segmentation_types = ', '.join(cfg.CONF.ml2.type_drivers) LOG.debug(_("Initialization done"))
**** CubicPower OpenStack Study **** def create_network_postcommit(self, context): # create network on the network controller self._send_create_network(context.current)
**** CubicPower OpenStack Study **** def update_network_postcommit(self, context): # update network on the network controller self._send_update_network(context.current)
**** CubicPower OpenStack Study **** def delete_network_postcommit(self, context): # delete network on the network controller self._send_delete_network(context.current)
**** CubicPower OpenStack Study **** def create_port_postcommit(self, context): # create port on the network controller port = self._prepare_port_for_controller(context) if port: self.async_port_create(port["network"]["tenant_id"], port["network"]["id"], port)
**** CubicPower OpenStack Study **** def update_port_postcommit(self, context): # update port on the network controller port = self._prepare_port_for_controller(context) if port: self.servers.rest_update_port(port["network"]["tenant_id"], port["network"]["id"], port)
**** CubicPower OpenStack Study **** def delete_port_postcommit(self, context): # delete port on the network controller port = context.current net = context.network.current self.servers.rest_delete_port(net["tenant_id"], net["id"], port['id'])
**** CubicPower OpenStack Study **** def _prepare_port_for_controller(self, context): # make a copy so the context isn't changed for other drivers port = copy.deepcopy(context.current) net = context.network.current port['network'] = net port['bound_segment'] = context.bound_segment actx = ctx.get_admin_context() prepped_port = self._extend_port_dict_binding(actx, port) prepped_port = self._map_state_and_status(prepped_port) if (portbindings.HOST_ID not in prepped_port or prepped_port[portbindings.HOST_ID] == ''): LOG.warning(_("Ignoring port notification to controller because " "of missing host ID.")) # in ML2, controller doesn't care about ports without # the host_id set return False return prepped_port
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