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