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# Copyright (C) 2018 Verizon. 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 rest_framework import serializers

from resource_handle import ResourceHandleSerializer

CHANGE_TYPES = [
    "ADDED",
    "REMOVED",
    "MODIFIED",
    "TEMPORARY",
    "LINK_PORT_ADDED",
    "LINK_PORT_REMOVED"
]


class AffectedVLsSerializer(serializers.Serializer):
    id = serializers.UUIDField(
        help_text="Identifier of the virtual link instance, identifying " +
        "the applicable 'vnfVirtualLinkResourceInfo' ",
        required=True
    )
    virtualLinkDescId = serializers.UUIDField(
        help_text="Identifier of the related VLD in the VNFD.",
        required=True
    )
    changeType = serializers.ChoiceField(
        help_text="Signals the type of change",
        required=True,
        choices=CHANGE_TYPES
    )
    metadata = serializers.DictField(
        help_text="Metadata about this resource. ",
        required=False,
        allow_null=True)
    networkResource = ResourceHandleSerializer(
        help_text="Reference to the VirtualNetwork resource.",
        required=True,
        allow_null=False)