mech_foobar.py

from oslo_log import log

from neutron.common import constants
from neutron.extensions import portbindings
from neutron.plugins.ml2 import driver_api as api

LOG = log.getLogger(__name__)

VIF_TYPE_FOOBAR = 'foobar'


class FoobarMechanismDriver(api.MechanismDriver):

    def initialize(self):
        LOG.debug('Initializing driver')
        self.vif_type = VIF_TYPE_FOOBAR
        self.vif_details = {portbindings.CAP_PORT_FILTER: False}
        LOG.debug('Initializing complete')

    def bind_port(self, context):
        LOG.debug("Attempting to bind port %(port)s on "
                  "network %(network)s",
                  {'port': context.current['id'],
                   'network': context.network.current['id']})
        for segment in context.segments_to_bind:
            context.set_binding(segment[api.ID],
                                self.vif_type,
                                self.vif_details,
                                status=constants.PORT_STATUS_ACTIVE)
            LOG.debug("Bound using segment: %s", segment)
            return