
# Copyright 2017-present Open Networking Foundation
#
# 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 django.db import models
from django.db.models import *
from core.models import Service, XOSBase, Slice, Instance, ServiceInstance, ServiceInstanceLink, Node, Image, User, Flavor, NetworkParameter, NetworkParameterType, Port, AddressPool, User
from core.models.xosbase import StrippedCharField
import os
from django.db import models, transaction
from django.forms.models import model_to_dict
from django.db.models import Q
from operator import itemgetter, attrgetter, methodcaller
from core.models import Tag
from core.models.service import LeastLoadedNodeScheduler
import traceback
from xos.exceptions import *
from xosconfig import Config

class ConfigurationError(Exception):
    pass

VOLT_KIND = "vOLT"

CORD_USE_VTN = getattr(Config(), "networking_use_vtn", False)