# Copyright 2017 Huawei Technologies Co., Ltd.
# 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.

from oslo_config import cfg
from oslo_log import log

from neutron.plugins.ml2 import driver_api
from neutron.plugins.ml2.drivers import type_vxlan
from neutron_lib import exceptions as n_exc

from tricircle.common import constants
from tricircle.common.i18n import _LE

LOG = log.getLogger(__name__)


class VxLANTypeDriver(type_vxlan.VxlanTypeDriver):
    def __init__(self):
        super(VxLANTypeDriver, self).__init__()

    def get_type(self):
        return constants.NT_VxLAN

    def initialize(self):
        try:
            self._initialize(cfg.CONF.tricircle.vni_ranges)
        except n_exc.NetworkTunnelRangeError:
            LOG.exception(_LE("Failed to parse vni_ranges. "
                              "Service terminated!"))
            raise SystemExit()

    def reserve_provider_segment(self, context, segment):
        res = super(VxLANTypeDriver,
                    self).reserve_provider_segment(context, segment)
        res[driver_api.NETWORK_TYPE] = constants.NT_VxLAN
        return res

    def allocate_tenant_segment(self, context):
        res = super(VxLANTypeDriver,
                    self).allocate_tenant_segment(context)
        res[driver_api.NETWORK_TYPE] = constants.NT_VxLAN
        return res

    def get_mtu(self, physical_network=None):
        pass
