34 lines
1.2 KiB
Python
34 lines
1.2 KiB
Python
# 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 six import moves
|
|
|
|
from kuryr.lib import constants as const
|
|
from kuryr.lib import exceptions
|
|
|
|
|
|
class SegmentationDriver(object):
|
|
def __init__(self):
|
|
self.available_local_vlans = set(moves.range(const.MIN_VLAN_TAG,
|
|
const.MAX_VLAN_TAG + 1))
|
|
|
|
def allocate_segmentation_id(self, allocated_ids=set()):
|
|
self.available_local_vlans.difference_update(allocated_ids)
|
|
try:
|
|
allocated = self.available_local_vlans.pop()
|
|
except KeyError:
|
|
raise exceptions.segmentationIdAllocationFailure
|
|
|
|
return allocated
|
|
|
|
def release_segmentation_id(self, id):
|
|
self.available_local_vlans.add(id)
|