lcm/ns/serializers/update_serializers.py

   1 # Copyright (c) 2018, CMCC Technologies Co., Ltd.
   2
   3 # Licensed under the Apache License, Version 2.0 (the "License")
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6
   7 # http://www.apache.org/licenses/LICENSE-2.0
   8
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15 from rest_framework import serializers
  16
  17 from lcm.ns.serializers.pub_serializers import IpAddressSerialzier
  18
  19
  20 class VnfInstanceDataSerializer(serializers.Serializer):
  21     vnfInstanceId = serializers.CharField(help_text="Specify the target NS instance where the VNF instances are "
  22                                                     "moved to", required=True)
  23     vnfProfileId = serializers.CharField(help_text="Specify the VNF instance that is moved.",
  24                                          required=False, allow_null=True)
  25
  26
  27 class InstantiateVnfDataSerializer(serializers.Serializer):
  28     vnfdId = serializers.CharField(help_text="Information sufficient to identify the VNFD which defines the VNF to be"
  29                                              " instantiated. ", required=True)
  30     vnfFlavourId = serializers.CharField(help_text="Identifier of the VNF deployment flavour to be instantiated.",
  31                                          required=True)
  32     vnfInstantiationLevelId = serializers.CharField(help_text="Identifier of the instantiation level of the deployment "
  33                                                               "flavour to be instantiated. ", required=False,
  34                                                     allow_null=True)
  35     vnfInstanceName = serializers.CharField(help_text="Human-readable name of the VNF instance to be created.",
  36                                             required=False, allow_null=True)
  37
  38
  39 class IpOverEthernetAddressDataSerializer(serializers.Serializer):
  40     macAddress = serializers.CharField(help_text="Mac address", required=False, allow_null=True)
  41     ipAddresses = IpAddressSerialzier(help_text="List of IP addresses to assign to the extCP instance.",
  42                                       required=False, allow_null=True, many=True)
  43
  44
  45 class CpProtocolDataSerializer(serializers.Serializer):
  46     layerProtocol = serializers.ChoiceField(help_text="Identifier of layer(s) and protocol(s).",
  47                                             choices=["IP_OVER_ETHERNET"], required=True)
  48     ipOverEthernet = IpOverEthernetAddressDataSerializer(
  49         help_text="Network address data for IP over Ethernet to assign to the extCP instance.",
  50         required=False, allow_null=True)
  51
  52
  53 class VnfExtCpConfigSerializer(serializers.Serializer):
  54     cpInstanceId = serializers.CharField(help_text="Identifier of the external CP instance to which this set of "
  55                                                    "configuration parameters is requested to be applied.",
  56                                          required=False, allow_null=True)
  57     linkPortId = serializers.CharField(help_text="Identifier of a pre-conFigured link port to which the external CP "
  58                                                  "will be associated.", required=False, allow_null=True)
  59     cpProtocolData = serializers.ListField(help_text="Parameters for configuring the network protocols on the link "
  60                                                      "port that connects the CP to a VL",
  61                                            child=(CpProtocolDataSerializer(help_text="This type represents network "
  62                                                                                      "protocol data.", required=True)),
  63                                            required=False, allow_null=True)
  64
  65
  66 class VnfExtCpData(serializers.Serializer):
  67     cpdId = serializers.CharField(help_text="The identifier of the CPD in the VNFD.", required=True)
  68     cpConfig = serializers.ListField(help_text="List of instance data that need to be conFigured on the CP instances "
  69                                                "created from the respective CPD.",
  70                                      child=(VnfExtCpConfigSerializer(help_text="Config of vnf ext cp", required=True)),
  71                                      required=False, allow_null=True)
  72
  73
  74 class ResourceHandleSerializer(serializers.Serializer):
  75     vimId = serializers.CharField(help_text="Identifier of the VIM under whose control this resource is placed.",
  76                                   required=False, allow_null=True)
  77     resourceProviderId = serializers.CharField(help_text="Identifier of the entity responsible for the management of "
  78                                                          "the resource.", required=False, allow_null=True)
  79     resourceId = serializers.CharField(help_text="Identifier of the resource in the scope of the VIM or the "
  80                                                  "resource provider.", required=True)
  81     vimLevelResourceType = serializers.CharField(help_text="Type of the resource in the scope of the VIM or the "
  82                                                            "resource provider.", required=False, allow_null=True)
  83
  84
  85 class ExtLinkPortDataSerializer(serializers.Serializer):
  86     id = serializers.CharField(help_text="Provided by the entity that has created the link port", required=True)
  87     resourceHandle = ResourceHandleSerializer(help_text="Identifier(s) of the virtualised network resource(s) "
  88                                                         "realizing the VL instance", required=True)
  89
  90
  91 class ExtVirtualLinkDataSerializer(serializers.Serializer):
  92     extVirtualLinkId = serializers.CharField(help_text="The identifier of the external VL instance, if provided. ",
  93                                              required=False, allow_null=True)
  94     vimId = serializers.CharField(help_text="Identifier of the VIM that manages this resource.",
  95                                   required=False, allow_null=True)
  96     resourceProviderId = serializers.CharField(help_text="Identifies the entity responsible for the management of "
  97                                                          "this resource.", required=False, allow_null=True)
  98     resourceId = serializers.CharField(help_text="The identifier of the resource in the scope of the VIM or the"
  99                                                  " resource provider.", required=True)
 100     extCps = serializers.ListField(child=VnfExtCpData(help_text="External CPs of the VNF to be connected to this external "
 101                                                       "VL.", required=True), required=False, allow_null=True)
 102     extLinkPorts = serializers.ListField(help_text="Externally provided link ports to be used to connect external "
 103                                                    "connection points to this external VL. ",
 104                                          child=(ExtLinkPortDataSerializer(help_text="This type represents an externally"
 105                                                                                     "provided link port to be used to "
 106                                                                                     "connect a VNF external connection "
 107                                                                                     "point to an external VL",
 108                                                                           required=True)),
 109                                          required=False, allow_null=True)
 110
 111
 112 class ExtManagedVirtualLinkDataSerializer(serializers.Serializer):
 113     extManagedVirtualLinkId = serializers.CharField(help_text="The identifier of the externally-managed internal VL "
 114                                                               "instance,if provided.", required=False, allow_null=True)
 115     virtualLinkDescId = serializers.CharField(help_text="The identifier of the VLD in the VNFD for this VL.",
 116                                               required=True)
 117
 118     vimId = serializers.CharField(help_text="Identifier of the VIMthat manage this resource.",
 119                                   required=False, allow_null=True)
 120
 121     resourceProviderId = serializers.CharField(help_text="Identifies the entity responsible for the management of"
 122                                                          "this resource.", required=False, allow_null=True)
 123     resourceId = serializers.CharField(help_text="The identifier of the resource in the scope of the VIM or"
 124                                                  "the resource provider.", required=True)
 125
 126
 127 class ChangeVnfFlavourDataSerizlizer(serializers.Serializer):
 128     vnfInstanceId = serializers.CharField(help_text="Identifier of the VNF instance to be modified.", required=True)
 129     newFlavourId = serializers.CharField(help_text="Identifier of the VNF deployment flavour to be instantiated.",
 130                                          required=True)
 131     instantiationLevelId = serializers.CharField(help_text="Identifier of the instantiation level of the deployment "
 132                                                            "flavour to be instantiated.",
 133                                                  required=False, allow_null=True)
 134     extVirtualLinks = serializers.ListField(help_text="Information about external VLs to connect the VNF to.",
 135                                             child=(ExtVirtualLinkDataSerializer(help_text="This type represents "
 136                                                                                           "an external VL",
 137                                                                                 required=True)),
 138                                             required=False, allow_null=True)
 139     extManagedVirtualLinks = serializers.ListField(help_text="Information about internal VLs that are managed by NFVO",
 140                                                    child=ExtManagedVirtualLinkDataSerializer(
 141                                                        help_text="This type represents an externally-managed internal"
 142                                                                  "VL.", required=True), required=False, allow_null=True)
 143     additionalParams = serializers.CharField(help_text="Additional input parameters for the flavour change process",
 144                                              required=False, allow_null=True)
 145
 146
 147 class OperationalStatesSerializer(serializers.Serializer):
 148     OperationalStates = serializers.ChoiceField(help_text="State of operation",
 149                                                 choices=["STARTED", "STOPPED"])
 150
 151
 152 class StopTypeSerializer(serializers.Serializer):
 153     StopType = serializers.ChoiceField(help_text="Type of stop", choices=["FORCEFUL", "GRACEFUL"])
 154
 155
 156 class OperateVnfDataSerializer(serializers.Serializer):
 157     vnfInstanceId = serializers.CharField(help_text="Identifier of the VNF instance.", required=True)
 158     changeStateTo = OperationalStatesSerializer(help_text="The desired operational state to change the VNF to.",
 159                                                 required=True)
 160     stopType = StopTypeSerializer(help_text="It signals whether forceful or graceful stop is requested.",
 161                                   required=False, allow_null=True)
 162     gracefulStopTimeout = serializers.CharField(help_text="The time interval to wait for the VNF to be taken out of"
 163                                                           "service during graceful stop.",
 164                                                 required=False, allow_null=True)
 165
 166
 167 class ModifyVnfInfoDataSerializer(serializers.Serializer):
 168     vnfInstanceId = serializers.CharField(help_text="Identifier of the VNF instance", required=True)
 169     vnfInstanceName = serializers.CharField(help_text="New value of the vnfInstanceName attribute in VnfInstance",
 170                                             required=False, allow_null=True)
 171     vnfInstanceDescription = serializers.CharField(help_text="New value of the vnfInstanceDescription attribute in"
 172                                                              "VnfInstance", required=False, allow_null=True)
 173
 174
 175 class ChangeExtVnfConnectivityDataSerializer(serializers.Serializer):
 176     vnfInstanceId = serializers.CharField(help_text="Identifier of the VNF instance.", required=True, allow_null=True)
 177     extVirtualLinks = serializers.ListField(help_text="Information about external VLs to change",
 178                                             child=(ExtVirtualLinkDataSerializer(
 179                                                 help_text="Data of ext virtual link", required=True)),
 180                                             required=False, allow_null=True)
 181     additionalParams = serializers.CharField(help_text="Additional parameters passed by the OSS as input to the "
 182                                                        "external connectivity change process",
 183                                              required=False, allow_null=True)
 184
 185
 186 class SapDataSerializer(serializers.Serializer):
 187     sapdId = serializers.CharField(help_text="Reference to the SAPD for this SAP.", required=True)
 188     sapName = serializers.CharField(help_text="Human readable name for the SAP.", required=True)
 189     description = serializers.CharField(help_text="Human readable description for the SAP. ", required=True)
 190     sapProtocolData = serializers.ListField(help_text="Parameters for configuring the network protocols on the SAP.",
 191                                             child=(CpProtocolDataSerializer(
 192                                                 help_text="This type represents network protocol data.", required=True)),
 193                                             required=False, allow_null=True)
 194
 195
 196 class AssocNewNsdVersionDataSerializer(serializers.Serializer):
 197     newNsdId = serializers.CharField(help_text="Identifier of the new NSD version that is to be associated to the NS "
 198                                                "instance. ", required=True)
 199
 200
 201 class MoveVnfInstanceDataSerializer(serializers.Serializer):
 202     targetNsInstanceId = serializers.CharField(help_text="Specify the target NS instance where the VNF instances "
 203                                                          "are moved to.", required=True)
 204     vnfInstanceId = serializers.CharField(help_text="Specify the VNF instance that is moved.",
 205                                           required=False, allow_null=True)
 206
 207
 208 class NsCpHandleSerializer(serializers.Serializer):
 209     vnfInstanceId = serializers.CharField(help_text="Identifier of the VNF instance associated to the CP instance.",
 210                                           required=False, allow_null=True)
 211     vnfExtCpInstanceId = serializers.CharField(help_text="Identifier of the VNF external CP instance in the scope "
 212                                                          "of the VNF instance. ", required=False, allow_null=True)
 213     pnfInfoId = serializers.CharField(help_text="Identifier of the PNF instance associated to the CP instance.",
 214                                       required=False, allow_null=True)
 215     pnfExtCpInstanceId = serializers.CharField(help_text="Identifier of the PNF external CP instance in the scope "
 216                                                          "of the PNF.", required=False, allow_null=True)
 217     nsInstanceId = serializers.CharField(help_text="Identifier of the NS instance associated to the SAP instance.",
 218                                          required=False, allow_null=True)
 219     nsSapInstanceId = serializers.CharField(help_text="Identifier of the SAP instance in the scope of the NS instance",
 220                                             required=False, allow_null=True)
 221
 222
 223 class PortRangeSerializer(serializers.Serializer):
 224     lowerPort = serializers.CharField(help_text="Identifies the lower bound of the port range. ", required=True)
 225     upperPort = serializers.CharField(help_text="Identifies the upper bound of the port range ", required=True)
 226
 227
 228 class MaskSerializer(serializers.Serializer):
 229     startingPoint = serializers.CharField(help_text="Indicates the offset between the last bit of the source mac "
 230                                                     "address and the first bit of the sequence of bits to "
 231                                                     "be matched.", required=True)
 232     length = serializers.CharField(help_text="Indicates the number of bits to be matched. ", required=True)
 233     value = serializers.CharField(help_text="Provide the sequence of bit values to be matched. ", required=True)
 234
 235
 236 class NfpRuleSerializer(serializers.Serializer):
 237     etherDestinationAddress = serializers.CharField(help_text="Indicates a destination Mac address ",
 238                                                     required=False, allow_null=True)
 239     etherSourceAddress = serializers.CharField(help_text="Indicates a source Mac address",
 240                                                required=False, allow_null=True)
 241     etherType = serializers.ChoiceField(help_text="Indicates the protocol carried over the Ethernet layer.",
 242                                         choices=["IPV4", "IPV6"], required=False, allow_null=True)
 243     vlanTag = serializers.CharField(help_text="Indicates a VLAN identifier in an IEEE 802.1Q-2014 tag [6] ",
 244                                     required=False, allow_null=True)
 245     protocol = serializers.ChoiceField(help_text="Indicates the L4 protocol",
 246                                        choices=["TCP", "UDP", "ICMP"], required=False, allow_null=True)
 247     dscp = serializers.CharField(help_text="For IPv4 [7] a string of 0 and 1 digits that corresponds to the 6-bit "
 248                                            "Differentiated Services Code Point (DSCP) field of the IP header",
 249                                  required=False, allow_null=True)
 250     sourcePortRange = PortRangeSerializer(help_text="Indicates a range of source ports. ",
 251                                           required=False, allow_null=True)
 252     destinationPortRange = PortRangeSerializer(help_text="Indicates a range of destination ports.",
 253                                                required=False, allow_null=True)
 254     sourceIpAddressPrefix = serializers.CharField(
 255         help_text="Prefix of source ip address", required=False, allow_null=True)
 256     destinationIpAddressPrefix = serializers.CharField(
 257         help_text="Prefix of destination ip address", required=False, allow_null=True)
 258     extendedCriteria = serializers.ListField(help_text="Indicates values of specific bits in a frame.",
 259                                              child=(MaskSerializer(help_text="Mask serializer", required=True)),
 260                                              required=False, allow_null=True)
 261
 262
 263 class NfpDataSerializer(serializers.Serializer):
 264     nfpInfoId = serializers.CharField(help_text="Identifier of the NFP to be modified.",
 265                                       required=False, allow_null=True)
 266     nfpName = serializers.CharField(help_text="Human readable name for the NFP.", required=False, allow_null=True)
 267     description = serializers.CharField(help_text="Human readable description for the NFP",
 268                                         required=False, allow_null=True)
 269     nsCpHandle = serializers.ListField(help_text="HanIdentifier(s) of the CPs and SAPs which the NFP passes by.",
 270                                        child=(NsCpHandleSerializer(
 271                                            help_text="This type represents an identifier of the CP or SAP instance.",
 272                                            required=True)), required=False, allow_null=True)
 273     nfpRule = NfpRuleSerializer(help_text="NFP classification and selection rule.", required=False, allow_null=True)
 274
 275
 276 class UpdateVnffgDataSerializer(serializers.Serializer):
 277     vnffgInfoId = serializers.CharField(help_text="Identifier of an existing VNFFG to be updated for the NS Instance.",
 278                                         required=True)
 279     nfp = serializers.ListField(help_text="nfp", child=(NfpDataSerializer(help_text="This type contains information "
 280                                                                                     "used to create or modify NFP "
 281                                                                                     "instance parameters for the update"
 282                                                                                     "of an existing VNFFG instance. ",
 283                                                                           required=True)),
 284                                 required=False, allow_null=True)
 285     nfpInfoId = serializers.ListField(help_text="Identifier(s) of the NFP to be deleted from a given VNFFG.",
 286                                       required=False, allow_null=True)
 287
 288
 289 class ChangeNsFlavourDataSerializer(serializers.Serializer):
 290     newNsFlavourId = serializers.CharField(
 291         help_text="Identifier of the new NS DF to apply to this NS instance.", required=True)
 292     instantiationLevelId = serializers.CharField(
 293         help_text="Identifier of the instantiation level of the deployment flavour to be instantiated.",
 294         required=False, allow_null=True)
 295
 296
 297 class IdentifierInPnfSerializer(serializers.Serializer):
 298     IdentifierInPnf = serializers.Serializer(help_text="An Identifier that is unique within respect to a PNF.")
 299
 300
 301 class IdentifierInNsdSerializer(serializers.Serializer):
 302     IdentifierInNsd = serializers.Serializer(help_text="An identifier that is unique within a NS descriptor")
 303
 304
 305 class PnfExtCpDataSerializer(serializers.Serializer):
 306     cpInstanceI16 = IdentifierInPnfSerializer(help_text="Identifier of the CP. Shall be present for existing CP.",
 307                                               required=False, allow_null=True)
 308     cpdId = IdentifierInNsdSerializer(help_text="Identifier of the Connection Point Descriptor (CPD) for this CP",
 309                                       required=False, allow_null=True)
 310     cpProtocolData = CpProtocolDataSerializer(help_text="Address assigned for this CP.",
 311                                               required=False, allow_null=True, many=True)
 312
 313
 314 class AddPnfDataSerializer(serializers.Serializer):
 315     pnfId = serializers.CharField(help_text="Identifier of the PNF.", required=True)
 316     pnfName = serializers.CharField(help_text="Name of the PNF.", required=True)
 317     pnfdId = serializers.CharField(help_text="Identifier of the PNFD on which the PNF is based.", required=True)
 318     pnfProfileId = serializers.CharField(
 319         help_text="Identifier of related PnfProfile in the NSD on which the PNF is based.", required=True)
 320     cpData = PnfExtCpDataSerializer(help_text="Address assigned for the PNF external CP(s). ",
 321                                     required=False, allow_null=True, many=True)
 322
 323
 324 class ModifyPnfDataSerializer(serializers.Serializer):
 325     pnfId = serializers.CharField(help_text="Identifier of the PNF.", required=True)
 326     pnfName = serializers.CharField(help_text="Name of the PNF", required=False, allow_null=True)
 327     cpData = serializers.ListField(
 328         help_text="Address assigned for the PNF external CP(s).",
 329         child=(PnfExtCpDataSerializer(
 330             help_text="This type represents the configuration data on the external CP of the PNF.")),
 331         required=False, allow_null=True)
 332
 333
 334 class DateTimeSerializer(serializers.Serializer):
 335     DateTime = serializers.Serializer(help_text="Date-time stamp.")
 336
 337
 338 class UpdateNsReqSerializer(serializers.Serializer):
 339     updateType = serializers.ChoiceField(help_text="The type of update.",
 340                                          choices=["ADD_VNF", "REMOVE_VNF", "INSTANTIATE_VNF", "CHANGE_VNF_DF",
 341                                                   "OPERATE_VNF", "MODIFY_VNF_INFORMATION",
 342                                                   "CHANGE_EXTERNAL_VNF_CONNECTIVITY", "REMOVE_SAP", "ADD_NESTED_NS",
 343                                                   "REMOVE_NESTED_NS", "ASSOC_NEW_NSD_VERSION", "MOVE_VNF", "ADD_VNFFG",
 344                                                   "REMOVE_VNFFG", "UPDATE_VNFFG", "CHANGE_NS_DF", "ADD_PNF",
 345                                                   "MODIFY_PNF", "REMOVE_PNF"], required=True)
 346     addVnfInstance = serializers.ListField(help_text="Identifies an existing VNF instance to be added to the NS "
 347                                                      "instance.",
 348                                            child=(VnfInstanceDataSerializer(help_text="Data of vnf instance",
 349                                                                             required=True)),
 350                                            required=False, allow_null=True)
 351     removeVnfInstanceId = serializers.ListField(help_text="Identifies an existing VNF instance to be removed from "
 352                                                           "the NS instance.", required=False, allow_null=True)
 353     instantiateVnfData = serializers.ListField(help_text="Identifies the new VNF to be instantiated.",
 354                                                child=(InstantiateVnfDataSerializer(help_text="Data of vnf instance",
 355                                                                                    required=True)),
 356                                                required=False, allow_null=True)
 357     changeVnfFlavourData = serializers.ListField(help_text="Identifies the new DF of the VNF instance to be "
 358                                                            "changed to.",
 359                                                  child=(ChangeVnfFlavourDataSerizlizer(
 360                                                      help_text="The type represents the information that is requested "
 361                                                                "to be changed deployment flavour for an existing "
 362                                                                "VNF instance.", required=True)),
 363                                                  required=False, allow_null=True)
 364     operateVnfData = serializers.ListField(help_text="This type represents a VNF instance for which the operational "
 365                                                      "state needs to be changed and the requested new state.",
 366                                            child=(OperateVnfDataSerializer(
 367                                                help_text="This type represents a VNF instance for which the operational"
 368                                                          " state needs to be changed and the requested new state",
 369                                                          required=True)), required=False, allow_null=True)
 370     modifyVnfInfoData = serializers.ListField(help_text="This type represents the information that is requested to be"
 371                                                         " modified for a VNF instance. ",
 372                                               child=(ModifyVnfInfoDataSerializer(
 373                                                   help_text="This type represents the information that is requested to "
 374                                                             "be modified for a VNF instance. ", required=True)),
 375                                               required=False, allow_null=True)
 376     changeExtVnfConnectivityData = serializers.ListField(help_text="Specifies the new external connectivity data of the"
 377                                                                    "VNF instance to be changed",
 378                                                          child=(ChangeExtVnfConnectivityDataSerializer(
 379                                                              help_text="This type describes the information invoked by"
 380                                                                        "the NFVO to change the external VNF "
 381                                                                        "connectivity information maintained by"
 382                                                                        " the VNFM.", required=True)),
 383                                                          required=False, allow_null=True)
 384     addSap = serializers.ListField(help_text="Identifies a new SAP to be added to the NS instance.",
 385                                    child=(SapDataSerializer(help_text="This type represents the information related to "
 386                                                                       "a SAP of a NS", required=True)),
 387                                    required=False, allow_null=True)
 388     removeSapId = serializers.ListField(help_text="The identifier an existing SAP to be removed from the "
 389                                                   "NS instance", required=False, allow_null=True)
 390     addNestedNsId = serializers.ListField(help_text="The identifier of an existing nested NS instance to be added to "
 391                                                     "the NS instance", required=False, allow_null=True)
 392     removeNestedNsId = serializers.ListField(help_text="The identifier of an existing nested NS instance to be "
 393                                                        "removed from the NS instance.",
 394                                              required=False, allow_null=True)
 395     assocNewNsdVersionData = AssocNewNsdVersionDataSerializer(help_text="Specify the new NSD to be used for the NS "
 396                                                                         "instance.", required=False, allow_null=True)
 397     moveVnfInstanceData = serializers.ListField(help_text="Specify existing VNF instance to be moved from one NS "
 398                                                           "instance to another NS instance",
 399                                                 child=(MoveVnfInstanceDataSerializer()),
 400                                                 required=False, allow_null=True)
 401     addVnffg = serializers.ListField(help_text="The identifier of an existing nested NS instance to be added to the"
 402                                                " NS instance.", required=False, allow_null=True)
 403     removeVnffgId = serializers.ListField(help_text="The identifier of an existing nested NS instance to be removed "
 404                                                     "from the NS instance", required=False, allow_null=True)
 405     updateVnffg = serializers.ListField(help_text="Specify the new VNFFG Information data to be updated for a VNFFG"
 406                                                   " of the NS Instance",
 407                                         child=(UpdateVnffgDataSerializer(help_text="This type specifies the parameters "
 408                                                                                    "used for the update of an existing "
 409                                                                                    "VNFFG instance.", required=True)),
 410                                         required=False, allow_null=True)
 411     changeNsFlavourData = ChangeNsFlavourDataSerializer(
 412         help_text="Specifies the new DF to be applied to the NS instance", required=False, allow_null=True)
 413     addPnfData = serializers.ListField(help_text="Specifies the PNF to be added into the NS instance.",
 414                                        child=(AddPnfDataSerializer(help_text="Serializer data of add pnf", required=True)),
 415                                        required=False, allow_null=True)
 416     modifyPnfData = serializers.ListField(help_text="Specifies the PNF to be modified in the NS instance.",
 417                                           child=(ModifyPnfDataSerializer(
 418                                               help_text="This type specifies an PNF to be modified in the NS instance.",
 419                                               required=True)),
 420                                           required=False, allow_null=True)
 421     removePnfId = serializers.ListField(help_text="Identifier of the PNF to be deleted from the NS instance.",
 422                                         required=False, allow_null=True)
 423     updateTime = DateTimeSerializer(help_text="Timestamp indicating the update time of the NS",
 424                                     required=False, allow_null=True)