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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 .affected_vnfcs import AffectedVnfcsSerializer
from .affected_vls import AffectedVLsSerializer
from .affected_storages import AffectedStoragesSerializer
from .link import linkSerializer
from .response import ProblemDetailsSerializer
from .ext_virtual_link_info import ExtVirtualLinkInfoSerializer
from .vnf_info_modifications import VnfInfoModificationsSerializer
LCM_OPERATION_TYPES = [
"INSTANTIATE",
"SCALE",
"SCALE_TO_LEVEL",
"CHANGE_FLAVOUR",
"TERMINATE",
"HEAL",
"OPERATE",
"CHANGE_EXT_CONN",
"MODIFY_INFO"
]
LCM_OPERATION_STATE_TYPES = [
"STARTING",
"PROCESSING",
"COMPLETED",
"FAILED_TEMP",
"FAILED",
"ROLLING_BACK",
"ROLLED_BACK"
]
class ResourceChangesSerializer(serializers.Serializer):
affectedVnfcs = AffectedVnfcsSerializer(
help_text="Information about VNFC instances that were affected " +
"during the lifecycle operation.",
required=False,
many=True
)
affectedVirtualLinks = AffectedVLsSerializer(
help_text="Information about VL instances that were affected " +
"during the lifecycle operation. ",
required=False,
many=True
)
affectedVirtualStorages = AffectedStoragesSerializer(
help_text="Information about virtualised storage instances that " +
"were affected during the lifecycle operation",
required=False,
many=True
)
class LcmOpLinkSerializer(serializers.Serializer):
self = linkSerializer(
help_text="URI of this resource.",
required=True,
allow_null=False)
vnfInstance = serializers.CharField(
help_text="Link to the VNF instance that the operation applies to.",
required=True)
grant = serializers.CharField(
help_text="Link to the grant for this operation, if one exists.",
required=False)
cancel = serializers.CharField(
help_text="Link to the task resource that represents the 'cancel' " +
"operation for this VNF LCM operation occurrence.",
required=False)
retry = serializers.CharField(
help_text="Link to the task resource that represents the 'retry' " +
"operation for this VNF LCM operation occurrence, if" +
" retrying is currently allowed",
required=False)
rollback = serializers.CharField(
help_text="Link to the task resource that represents the 'cancel' " +
"operation for this VNF LCM operation occurrence.",
required=False)
fail = serializers.CharField(
help_text="Link to the task resource that represents the 'fail' " +
"operation for this VNF LCM operation occurrence.",
required=False)
class VNFLCMOpOccSerializer(serializers.Serializer):
id = serializers.CharField(
help_text="Identifier of this VNF lifecycle management operation" +
"occurrence,",
max_length=255,
required=True,
allow_null=False
)
operationState = serializers.ChoiceField(
help_text="The state of the VNF LCM operation occurrence. ",
required=True,
choices=LCM_OPERATION_STATE_TYPES
)
stateEnteredTime = serializers.CharField(
help_text="Date-time when the current state was entered.",
max_length=50
)
startTime = serializers.CharField(
help_text="Date-time of the start of the operation.",
max_length=50
)
vnfInstanceId = serializers.UUIDField(
help_text="Identifier of the VNF instance to which the operation" +
"applies"
)
grantId = serializers.UUIDField(
help_text="Identifier of the grant related to this VNF LCM operation " +
"occurrence, if such grant exists.",
allow_null=True
)
operation = serializers.ChoiceField(
help_text="The lifecycle management operation",
required=True,
choices=LCM_OPERATION_TYPES
)
isAutomaticInvocation = serializers.BooleanField(
help_text="Set to true if this VNF LCM operation occurrence has " +
"been triggered by an automated procedure inside the VNFM. " +
"Set to False otherwise.",
default=False
)
operationParams = serializers.DictField(
help_text="Input parameters of the LCM operation. This attribute " +
"shall be formatted according to the request data type of the " +
"related LCM operation. The following mapping between operationType and the " +
"data type of this attribute shall apply: " +
"1. INSTANTIATE: InstantiateVnfRequest" +
"2. SCALE: ScaleVnfRequest " +
"3. SCALE_TO_LEVEL: ScaleVnfToLevelRequest " +
"4. CHANGE_FLAVOUR: ChangeVnfFlavourRequest " +
"5. OPERATE: OperateVnfRequest " +
"6. HEAL: HealVnfRequest " +
"7. CHANGE_EXT_CONN: ChangeExtVnfConnectivityRequest " +
"8. TERMINATE: TerminateVnfRequest " +
"9. MODIFY_INFO: VnfInfoModifications",
required=True,
allow_null=False
)
isCancelPending = serializers.BooleanField(
help_text="If the VNF LCM operation occurrence is in 'STARTING'" +
"'PROCESSING' or 'ROLLING_BACK' state and the operation is being" +
" cancelled, this attribute shall be set to True. Otherwise, " +
" it shall be set to False.",
required=True
)
cancelMode = serializers.CharField(
help_text="The mode of an ongoing cancellation. Shall be present " +
"when isCancelPending=true, and shall be None otherwise.",
allow_null=True,
required=False
)
error = ProblemDetailsSerializer(
help_text="If 'operationState' is 'FAILED_TEMP' or 'FAILED' or " +
"'PROCESSING' or 'ROLLING_BACK' and previous value of 'operationState' " +
"was 'FAILED_TEMP' this attribute shall be present ",
allow_null=True,
required=False
)
resourceChanges = ResourceChangesSerializer(
help_text="It contains information about the cumulative changes " +
"to virtualised resources that were performed so far by the LCM " +
"operation since its start, if applicable.",
required=False,
allow_null=True)
changedInfo = VnfInfoModificationsSerializer(
help_text="Information about the changed VNF instance information, " +
"including VNF configurable properties",
required=False,
allow_null=True)
changedExtConnectivity = ExtVirtualLinkInfoSerializer(
help_text="Information about changed external connectivity, if this " +
"notification represents the result of a lifecycle operation occurrence. " +
"Shall be present if the 'notificationStatus' is set to 'RESULT' and the " +
"'operation' is set to 'CHANGE_EXT_CONN'. Shall be absent otherwise.",
many=True,
required=False,
allow_null=True)
_links = LcmOpLinkSerializer(
help_text="Links to resources related to this resource.",
required=True)
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