Tacker: ETSI MANO NFV Orchestrator / VNF Manager. See https://wiki.openstack.org/wiki/Tacker
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
tacker/tacker/plugins/common/utils.py

69 lines
2.5 KiB

# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2013 Cisco Systems, Inc.
#
# 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.
"""
Common utilities and helper functions for Openstack Networking Plugins.
"""
from tacker.common import exceptions as n_exc
from tacker.common import utils
from tacker.plugins.common import constants
def verify_vlan_range(vlan_range):
"""Raise an exception for invalid tags or malformed range."""
for vlan_tag in vlan_range:
if not utils.is_valid_vlan_tag(vlan_tag):
raise n_exc.NetworkVlanRangeError(
vlan_range=vlan_range,
error=_("%s is not a valid VLAN tag") % vlan_tag)
if vlan_range[1] < vlan_range[0]:
raise n_exc.NetworkVlanRangeError(
vlan_range=vlan_range,
error=_("End of VLAN range is less than start of VLAN range"))
def parse_network_vlan_range(network_vlan_range):
"""Interpret a string as network[:vlan_begin:vlan_end]."""
entry = network_vlan_range.strip()
if ':' in entry:
try:
network, vlan_min, vlan_max = entry.split(':')
vlan_range = (int(vlan_min), int(vlan_max))
except ValueError as ex:
raise n_exc.NetworkVlanRangeError(vlan_range=entry, error=ex)
verify_vlan_range(vlan_range)
return network, vlan_range
else:
return entry, None
def parse_network_vlan_ranges(network_vlan_ranges_cfg_entries):
"""Interpret a list of strings as network[:vlan_begin:vlan_end] entries."""
networks = {}
for entry in network_vlan_ranges_cfg_entries:
network, vlan_range = parse_network_vlan_range(entry)
if vlan_range:
networks.setdefault(network, []).append(vlan_range)
else:
networks.setdefault(network, [])
return networks
def in_pending_status(status):
return status in (constants.PENDING_CREATE,
constants.PENDING_UPDATE,
constants.PENDING_DELETE)