zte/vmanager/driver/interfaces/views.py

   1 # Copyright 2016-2017 ZTE Corporation.
   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 import inspect
  16 import json
  17 import logging
  18 import os
  19 import traceback
  20
  21 from drf_yasg.utils import swagger_auto_schema
  22 from rest_framework import status
  23 from rest_framework.decorators import api_view
  24 from rest_framework.response import Response
  25 from rest_framework.views import APIView
  26
  27 from driver.interfaces.serializers import HealReqSerializer, InstScaleHealRespSerializer, ScaleReqSerializer, \
  28     NotifyReqSerializer, GrantRespSerializer, GrantReqSerializer
  29 from driver.pub.config.config import VNF_FTP
  30 from driver.pub.utils import restcall
  31 from driver.pub.utils.restcall import req_by_msb
  32
  33 logger = logging.getLogger(__name__)
  34
  35
  36 def load_json_file(file_name):
  37     json_file = os.path.join(os.path.dirname(__file__), "data/" + file_name)
  38     f = open(json_file)
  39     json_data = json.JSONDecoder().decode(f.read())
  40     f.close()
  41     return json_data
  42
  43
  44 def fun_name():
  45     return "=================%s==================" % inspect.stack()[1][3]
  46
  47
  48 def ignorcase_get(args, key):
  49     if not key:
  50         return ""
  51     if not args:
  52         return ""
  53     if key in args:
  54         return args[key]
  55     for old_key in args:
  56         if old_key.upper() == key.upper():
  57             return args[old_key]
  58     return ""
  59
  60
  61 def mapping_conv(keyword_map, rest_return):
  62     resp_data = {}
  63     for param in keyword_map:
  64         if keyword_map[param]:
  65             resp_data[keyword_map[param]] = ignorcase_get(rest_return, param)
  66     return resp_data
  67
  68
  69 # Query vnfm_info from nslcm
  70 def get_vnfminfo_from_nslcm(vnfmid):
  71     ret = req_by_msb("api/nslcm/v1/vnfms/%s" % vnfmid, "GET")
  72     return ret
  73
  74
  75 # Query vnfd_info from nslcm
  76 def vnfd_get(vnfpackageid):
  77     ret = req_by_msb("api/nslcm/v1/vnfpackage/%s" % vnfpackageid, "GET")
  78     return ret
  79
  80
  81 # Query vnfpackage_info from nslcm
  82 def vnfpackage_get(csarid):
  83     ret = req_by_msb("api/nslcm/v1/vnfpackage/%s" % csarid, "GET")
  84     return ret
  85
  86
  87 @api_view(http_method_names=['POST'])
  88 def instantiate_vnf(request, *args, **kwargs):
  89     try:
  90         logger.debug("[%s] request.data=%s", fun_name(), request.data)
  91         vnfm_id = ignorcase_get(kwargs, "vnfmid")
  92         ret = get_vnfminfo_from_nslcm(vnfm_id)
  93         if ret[0] != 0:
  94             return Response(data={'error': ret[1]}, status=ret[2])
  95         vnfm_info = json.JSONDecoder().decode(ret[1])
  96         logger.debug("[%s] vnfm_info=%s", fun_name(), vnfm_info)
  97         vnf_package_id = ignorcase_get(request.data, "vnfPackageId")
  98         ret = vnfd_get(vnf_package_id)
  99         if ret[0] != 0:
 100             return Response(data={'error': ret[1]}, status=ret[2])
 101         vnfd_info = json.JSONDecoder().decode(ret[1])
 102         logger.debug("[%s] vnfd_info=%s", fun_name(), vnfd_info)
 103         csar_id = ignorcase_get(vnfd_info, "csarId")
 104         ret = vnfpackage_get(csar_id)
 105         if ret[0] != 0:
 106             return Response(data={'error': ret[1]}, status=ret[2])
 107         vnf_package_info = json.JSONDecoder().decode(ret[1])
 108         packageInfo = ignorcase_get(vnf_package_info, "packageInfo")
 109         logger.debug("[%s] packageInfo=%s", fun_name(), packageInfo)
 110         data = {}
 111         data["NFVOID"] = 1
 112         data["VNFMID"] = vnfm_id
 113         vnfdModel = json.loads(ignorcase_get(packageInfo, "vnfdModel"))
 114         metadata = ignorcase_get(vnfdModel, "metadata")
 115         vnfd_name = ignorcase_get(metadata, "name")
 116         # TODO  convert sdc vnf package to vnf vender package
 117         inputs = []
 118         if "SPGW" in vnfd_name.upper():
 119             data["VNFD"] = VNF_FTP + "SPGW"
 120             inputs = load_json_file("SPGW" + "_inputs.json")
 121         elif "MME" in vnfd_name.upper():
 122             data["VNFD"] = VNF_FTP + "MME"
 123             inputs = load_json_file("MME" + "_inputs.json")
 124         else:
 125             data["VNFD"] = ignorcase_get(packageInfo, "downloadUri")
 126
 127         data["VNFURL"] = data["VNFD"]
 128
 129         data["extension"] = {}
 130         for name, value in ignorcase_get(ignorcase_get(request.data, "additionalParam"), "inputs").items():
 131             inputs.append({"name": name, "value": value})
 132
 133         data["extension"]["inputs"] = json.dumps(inputs)
 134         additionalParam = ignorcase_get(request.data, "additionalParam")
 135         data["extension"]["extVirtualLinks"] = ignorcase_get(additionalParam, "extVirtualLinks")
 136         data["extension"]["vnfinstancename"] = ignorcase_get(request.data, "vnfInstanceName")
 137         data["extension"]["vnfid"] = data["VNFD"]
 138         data["extension"]["multivim"] = 0
 139         logger.debug("[%s] call_req data=%s", fun_name(), data)
 140
 141         ret = restcall.call_req(
 142             base_url=ignorcase_get(vnfm_info, "url"),
 143             user=ignorcase_get(vnfm_info, "userName"),
 144             passwd=ignorcase_get(vnfm_info, "password"),
 145             auth_type=restcall.rest_no_auth,
 146             resource="v1/vnfs",
 147             method='post',
 148             content=json.JSONEncoder().encode(data))
 149
 150         logger.debug("[%s] call_req ret=%s", fun_name(), ret)
 151         if ret[0] != 0:
 152             return Response(data={'error': ret[1]}, status=ret[2])
 153         resp = json.JSONDecoder().decode(ret[1])
 154         resp_data = {
 155             "vnfInstanceId": ignorcase_get(resp, "VNFInstanceID"),
 156             "jobId": ignorcase_get(resp, "JobId")
 157         }
 158         logger.info("[%s]resp_data=%s", fun_name(), resp_data)
 159     except Exception as e:
 160         logger.error("Error occurred when instantiating VNF")
 161         raise e
 162     return Response(data=resp_data, status=ret[2])
 163
 164
 165 @api_view(http_method_names=['POST'])
 166 def terminate_vnf(request, *args, **kwargs):
 167     try:
 168         logger.debug("[%s] request.data=%s", fun_name(), request.data)
 169         vnfm_id = ignorcase_get(kwargs, "vnfmid")
 170         ret = get_vnfminfo_from_nslcm(vnfm_id)
 171         if ret[0] != 0:
 172             return Response(data={'error': ret[1]}, status=ret[2])
 173         vnfm_info = json.JSONDecoder().decode(ret[1])
 174         logger.debug("[%s] vnfm_info=%s", fun_name(), vnfm_info)
 175         ret = restcall.call_req(
 176             base_url=ignorcase_get(vnfm_info, "url"),
 177             user=ignorcase_get(vnfm_info, "userName"),
 178             passwd=ignorcase_get(vnfm_info, "password"),
 179             auth_type=restcall.rest_no_auth,
 180             resource="v1/vnfs/%s" % (ignorcase_get(kwargs, "vnfInstanceID")),
 181             method='delete',
 182             content=json.JSONEncoder().encode(request.data))
 183         if ret[0] != 0:
 184             return Response(data={'error': ret[1]}, status=ret[2])
 185         resp = json.JSONDecoder().decode(ret[1])
 186         resp_data = {
 187             "vnfInstanceId": ignorcase_get(resp, "VNFInstanceID"),
 188             "jobId": ignorcase_get(resp, "JobId")
 189         }
 190         logger.debug("[%s]resp_data=%s", fun_name(), resp_data)
 191     except Exception as e:
 192         logger.error("Error occurred when terminating VNF")
 193         raise e
 194     return Response(data=resp_data, status=ret[2])
 195
 196
 197 @api_view(http_method_names=['GET'])
 198 def query_vnf(request, *args, **kwargs):
 199     try:
 200         logger.debug("[%s] request.data=%s", fun_name(), request.data)
 201         vnfm_id = ignorcase_get(kwargs, "vnfmid")
 202         ret = get_vnfminfo_from_nslcm(vnfm_id)
 203         if ret[0] != 0:
 204             return Response(data={'error': ret[1]}, status=ret[2])
 205         vnfm_info = json.JSONDecoder().decode(ret[1])
 206         logger.debug("[%s] vnfm_info=%s", fun_name(), vnfm_info)
 207         ret = restcall.call_req(
 208             base_url=ignorcase_get(vnfm_info, "url"),
 209             user=ignorcase_get(vnfm_info, "userName"),
 210             passwd=ignorcase_get(vnfm_info, "password"),
 211             auth_type=restcall.rest_no_auth,
 212             resource="v1/vnfs/%s" % (ignorcase_get(kwargs, "vnfInstanceID")),
 213             method='get',
 214             content=json.JSONEncoder().encode({}))
 215         if ret[0] != 0:
 216             return Response(data={'error': ret[1]}, status=ret[2])
 217         resp = json.JSONDecoder().decode(ret[1])
 218         vnf_status = ignorcase_get(resp, "vnfinstancestatus")
 219         resp_data = {"vnfInfo": {"vnfStatus": vnf_status}}
 220         logger.debug("[%s]resp_data=%s", fun_name(), resp_data)
 221     except Exception as e:
 222         logger.error("Error occurred when querying VNF information.")
 223         raise e
 224     return Response(data=resp_data, status=ret[2])
 225
 226
 227 @api_view(http_method_names=['GET'])
 228 def operation_status(request, *args, **kwargs):
 229     data = {}
 230     try:
 231         logger.debug("[%s] request.data=%s", fun_name(), request.data)
 232         vnfm_id = ignorcase_get(kwargs, "vnfmid")
 233         ret = get_vnfminfo_from_nslcm(vnfm_id)
 234         if ret[0] != 0:
 235             return Response(data={'error': ret[1]}, status=ret[2])
 236         vnfm_info = json.JSONDecoder().decode(ret[1])
 237         logger.debug("[%s] vnfm_info=%s", fun_name(), vnfm_info)
 238         operation_status_url = '/v1/jobs/{jobId}?NFVOID={nfvoId}&VNFMID={vnfmId}&ResponseID={responseId}'
 239         ret = restcall.call_req(
 240             base_url=ignorcase_get(vnfm_info, 'url'),
 241             user=ignorcase_get(vnfm_info, 'userName'),
 242             passwd=ignorcase_get(vnfm_info, 'password'),
 243             auth_type=restcall.rest_no_auth,
 244             resource=operation_status_url.format(jobId=ignorcase_get(kwargs, 'jobid'), nfvoId=1,
 245                                                  vnfmId=ignorcase_get(kwargs, 'vnfmid'),
 246                                                  responseId=ignorcase_get(request.GET, 'responseId')),
 247             method='get',
 248             content=json.JSONEncoder().encode(data))
 249
 250         if ret[0] != 0:
 251             return Response(data={'error': ret[1]}, status=ret[2])
 252         resp_data = json.JSONDecoder().decode(ret[1])
 253         logger.info("[%s]resp_data=%s", fun_name(), resp_data)
 254     except Exception as e:
 255         logger.error("Error occurred when getting operation status information.")
 256         raise e
 257     return Response(data=resp_data, status=ret[2])
 258
 259
 260 class GrantVnf(APIView):
 261     @swagger_auto_schema(
 262         request_body=GrantReqSerializer(),
 263         responses={
 264             status.HTTP_201_CREATED: GrantRespSerializer(),
 265             status.HTTP_500_INTERNAL_SERVER_ERROR: 'Internal error'
 266         }
 267     )
 268     def put(self, request):
 269         logger.info("=====GrantVnf=====")
 270         try:
 271             logger.info("req_data = %s", request.data)
 272             data = {}
 273             data["vnfInstanceId"] = ignorcase_get(request.data, "vnfistanceid")
 274             data["vnfDescriptorId"] = ""
 275             if ignorcase_get(request.data, "operationright") == 0:
 276                 data["lifecycleOperation"] = "Instantiate"
 277                 data["addresource"] = []
 278                 for vm in ignorcase_get(request.data, "vmlist"):
 279                     for i in range(int(ignorcase_get(vm, "vmnumber"))):
 280                         data["addresource"].append(
 281                             {
 282                                 "type": "vdu",
 283                                 "resourceDefinitionId": i,
 284                                 "vdu": ignorcase_get(vm, "vmflavor"),
 285                                 "vimid": ignorcase_get(vm, "vimid"),
 286                                 "tenant": ignorcase_get(vm, "tenant")})
 287
 288             data["additionalparam"] = {}
 289             data["additionalparam"]["vnfmid"] = ignorcase_get(request.data, "vnfmid")
 290             data["additionalparam"]["vimid"] = ignorcase_get(request.data, "vimid")
 291             data["additionalparam"]["tenant"] = ignorcase_get(request.data, "tenant")
 292
 293             ret = req_by_msb('api/nslcm/v1/ns/grantvnf', "POST", content=json.JSONEncoder().encode(data))
 294             logger.info("ret = %s", ret)
 295             if ret[0] != 0:
 296                 return Response(data={'error': ret[1]}, status=ret[2])
 297             resp = json.JSONDecoder().decode(ret[1])
 298             resp_data = {
 299                 'vimid': ignorcase_get(resp['vim'], 'vimid'),
 300                 'tenant': ignorcase_get(ignorcase_get(resp['vim'], 'accessinfo'), 'tenant')
 301             }
 302             logger.info("[%s]resp_data=%s", fun_name(), resp_data)
 303             return Response(data=resp_data, status=status.HTTP_201_CREATED)
 304         except Exception as e:
 305             logger.error("Error occurred in Grant VNF.")
 306             raise e
 307
 308
 309 class Notify(APIView):
 310     @swagger_auto_schema(
 311         request_body=NotifyReqSerializer(),
 312         responses={
 313             status.HTTP_200_OK: 'Successfully',
 314             status.HTTP_500_INTERNAL_SERVER_ERROR: 'Internal error'
 315         }
 316     )
 317     def post(self, request):
 318         try:
 319             logger.info("[%s]req_data = %s", fun_name(), request.data)
 320             notifyReqSerializer = NotifyReqSerializer(data=request.data)
 321             if not notifyReqSerializer.is_valid():
 322                 raise Exception(notifyReqSerializer.errors)
 323
 324             notify_param_map = {
 325                 "NFVOID": "",
 326                 "VNFMID": "VNFMID",
 327                 "VIMID": "vimid",
 328                 "VNFInstanceID": "vnfInstanceId",
 329                 "TimeStamp": "",
 330                 "EventType": "operation",
 331                 "VMList": "",
 332                 "VMFlavor": "",
 333                 "VMNumber": "",
 334                 "VMIDlist": "",
 335                 "VMUUID": ""
 336             }
 337             data = mapping_conv(notify_param_map, notifyReqSerializer.data)
 338             logger.info("[%s]data = %s", fun_name(), data)
 339
 340             data["status"] = "result"
 341             data["jobId"] = "notMust"
 342             data["affectedVnfc"] = []
 343             data["affectedVl"] = []
 344             data["affectedVirtualStorage"] = []
 345             data["affectedCp"] = []
 346
 347             extension = ignorcase_get(notifyReqSerializer.data, "extension")
 348             openo_notification = ignorcase_get(extension, "openo_notification")
 349             if openo_notification:
 350                 affectedvnfcs = ignorcase_get(openo_notification, "affectedVnfc")
 351                 affectedvls = ignorcase_get(openo_notification, "affectedvirtuallink")
 352                 affectedcps = ignorcase_get(openo_notification, "affectedCp")
 353                 vnfdmodule = ignorcase_get(openo_notification, "vnfdmodule")
 354             else:
 355                 affectedvnfcs = ignorcase_get(ignorcase_get(notifyReqSerializer.data, "extension"), "affectedvnfc")
 356                 affectedvls = ignorcase_get(ignorcase_get(notifyReqSerializer.data, "extension"), "affectedvl")
 357                 affectedcps = ignorcase_get(ignorcase_get(notifyReqSerializer.data, "extension"), "affectedcp")
 358                 vnfdmodule = ignorcase_get(ignorcase_get(notifyReqSerializer.data, "extension"), "vnfdmodule")
 359
 360             data["vnfdmodule"] = vnfdmodule
 361
 362             for affectedvnfc in affectedvnfcs:
 363                 data["affectedVnfc"].append({
 364                     "vnfcInstanceId": ignorcase_get(affectedvnfc, "vnfcInstanceId"),
 365                     "vduId": ignorcase_get(affectedvnfc, "vduId"),
 366                     "changeType": ignorcase_get(affectedvnfc, "changeType"),
 367                     "vimId": ignorcase_get(ignorcase_get(affectedvnfc, "computeResource"), "vimId"),
 368                     "vmId": ignorcase_get(ignorcase_get(affectedvnfc, "computeResource"), "resourceId"),
 369                     "vmName": ignorcase_get(ignorcase_get(affectedvnfc, "computeResource"), "resourceName")
 370                 })
 371
 372             for affectedvl in affectedvls:
 373                 data["affectedVl"].append({
 374                     "vlInstanceId": ignorcase_get(affectedvl, "virtualLinkInstanceId"),
 375                     "changeType": ignorcase_get(affectedvl, "changeType"),
 376                     "vimId": ignorcase_get(ignorcase_get(affectedvl, "networkResource"), "vimId"),
 377                     "vldId": ignorcase_get(affectedvl, "virtuallinkdescid"),
 378                     "networkResource": {
 379                         "resourceType": "network",
 380                         "resourceId": ignorcase_get(ignorcase_get(affectedvl, "networkresource"), "resourceid"),
 381                         "resourceName": ignorcase_get(ignorcase_get(affectedvl, "networkresource"), "resourcename")
 382                     }
 383                 })
 384
 385             for affectedcp in affectedcps:
 386                 data["affectedCp"].append(affectedcp)
 387
 388             notify_url = 'api/nslcm/v1/ns/{vnfmid}/vnfs/{vnfInstanceId}/Notify'
 389             ret = req_by_msb(notify_url.format(vnfmid=ignorcase_get(data, 'VNFMID'),
 390                                                vnfInstanceId=ignorcase_get(data, 'vnfinstanceid')),
 391                              "POST", content=json.JSONEncoder().encode(data))
 392
 393             logger.info("[%s]data = %s", fun_name(), ret)
 394             if ret[0] != 0:
 395                 raise Exception(ret[1])
 396
 397             return Response(data=None, status=ret[2])
 398         except Exception as e:
 399             logger.error("Error occurred in LCM notification,error: %s", e.message)
 400             logger.error(traceback.format_exc())
 401             return Response(data={'error': 'notify expection'}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
 402
 403
 404 class Scale(APIView):
 405     @swagger_auto_schema(
 406         request_body=ScaleReqSerializer(),
 407         responses={
 408             status.HTTP_202_ACCEPTED: InstScaleHealRespSerializer(),
 409             status.HTTP_500_INTERNAL_SERVER_ERROR: "Internal error"
 410         }
 411     )
 412     def post(self, request, vnfmid, vnfInstanceId):
 413         logger.info("====scale_vnf===")
 414         try:
 415             logger.info("request.data = %s", request.data)
 416             logger.info("requested_url = %s", request.get_full_path())
 417             scaleReqSerializer = ScaleReqSerializer(data=request.data)
 418             if not scaleReqSerializer.is_valid():
 419                 raise Exception(scaleReqSerializer.errors)
 420
 421             ret = get_vnfminfo_from_nslcm(vnfmid)
 422             if ret[0] != 0:
 423                 raise Exception(ret[1])
 424
 425             vnfm_info = json.JSONDecoder().decode(ret[1])
 426             scale_type = ignorcase_get(scaleReqSerializer.data, "type")
 427             aspect_id = ignorcase_get(scaleReqSerializer.data, "aspectId")
 428             number_of_steps = ignorcase_get(scaleReqSerializer.data, "numberOfSteps")
 429             data = {
 430                 'vnfmid': vnfmid,
 431                 'nfvoid': 1,
 432                 'scaletype': '0' if scale_type == 'SCALE_OUT' else '1',
 433                 'vmlist': [{'VMNumber': number_of_steps, 'VMFlavor': aspect_id}],
 434                 'extension': ''
 435             }
 436
 437             logger.info("data = %s", data)
 438             ret = restcall.call_req(
 439                 base_url=ignorcase_get(vnfm_info, "url"),
 440                 user=ignorcase_get(vnfm_info, "userName"),
 441                 passwd=ignorcase_get(vnfm_info, "password"),
 442                 auth_type=restcall.rest_no_auth,
 443                 resource='/v1/vnfs/{vnfInstanceID}/scale'.format(vnfInstanceID=vnfInstanceId),
 444                 method='put',  # POST
 445                 content=json.JSONEncoder().encode(data))
 446             logger.info("ret=%s", ret)
 447             if ret[0] != 0:
 448                 raise Exception('scale error')
 449
 450             resp_data = json.JSONDecoder().decode(ret[1])
 451             logger.info("resp_data=%s", resp_data)
 452             scaleRespSerializer = InstScaleHealRespSerializer(data=resp_data)
 453             if not scaleRespSerializer.is_valid():
 454                 raise Exception(scaleRespSerializer.errors)
 455
 456             return Response(data=scaleRespSerializer.data, status=status.HTTP_202_ACCEPTED)
 457         except Exception as e:
 458             logger.error("Error occurred when scaling VNF,error:%s", e.message)
 459             logger.error(traceback.format_exc())
 460             return Response(data={'error': 'scale expection'}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
 461
 462
 463 class Heal(APIView):
 464     @swagger_auto_schema(
 465         request_body=HealReqSerializer(),
 466         responses={
 467             status.HTTP_202_ACCEPTED: InstScaleHealRespSerializer(),
 468             status.HTTP_500_INTERNAL_SERVER_ERROR: "Internal error"
 469         }
 470     )
 471     def post(self, request, vnfmid, vnfInstanceId):
 472         logger.info("====heal_vnf===")
 473         try:
 474             logger.info("request.data = %s", request.data)
 475             logger.info("requested_url = %s", request.get_full_path())
 476             healReqSerializer = HealReqSerializer(data=request.data)
 477             if not healReqSerializer.is_valid():
 478                 raise Exception(healReqSerializer.errors)
 479
 480             ret = get_vnfminfo_from_nslcm(vnfmid)
 481             if ret[0] != 0:
 482                 raise Exception(ret[1])
 483
 484             vnfm_info = json.JSONDecoder().decode(ret[1])
 485             data = {}
 486             data['action'] = ignorcase_get(healReqSerializer.data, 'action')
 487             affectedvm = ignorcase_get(healReqSerializer.data, 'affectedvm')
 488             data['affectedvm'] = []
 489             if isinstance(affectedvm, list):
 490                 data['affectedvm'] = affectedvm
 491             else:
 492                 data['affectedvm'].append(affectedvm)
 493             data['lifecycleoperation'] = 'operate'
 494             data['isgrace'] = 'force'
 495
 496             logger.info("data = %s", data)
 497             ret = restcall.call_req(
 498                 base_url=ignorcase_get(vnfm_info, "url"),
 499                 user=ignorcase_get(vnfm_info, "userName"),
 500                 passwd=ignorcase_get(vnfm_info, "password"),
 501                 auth_type=restcall.rest_no_auth,
 502                 resource='/api/v1/nf_m_i/nfs/{vnfInstanceID}/vms/operation'.format(vnfInstanceID=vnfInstanceId),
 503                 method='post',
 504                 content=json.JSONEncoder().encode(data))
 505             logger.info("ret=%s", ret)
 506             if ret[0] != 0:
 507                 raise Exception('heal error')
 508             resp_data = json.JSONDecoder().decode(ret[1])
 509             logger.info("resp_data=%s", resp_data)
 510             healRespSerializer = InstScaleHealRespSerializer(data=resp_data)
 511             if not healRespSerializer.is_valid():
 512                 raise Exception(healRespSerializer.errors)
 513
 514             return Response(data=healRespSerializer.data, status=status.HTTP_202_ACCEPTED)
 515         except Exception as e:
 516             logger.error("Error occurred when healing VNF,error:%s", e.message)
 517             logger.error(traceback.format_exc())
 518             return Response(data={'error': 'heal expection'}, status=status.HTTP_500_INTERNAL_SERVER_ERROR)
 519
 520
 521 def get_vdus(nf_model, aspect_id):
 522     associated_group = ''
 523     members = []
 524     vnf_flavours = nf_model['vnf_flavours']
 525     for vnf_flaour in vnf_flavours:
 526         scaling_aspects = vnf_flaour['scaling_aspects']
 527         for aspect in scaling_aspects:
 528             if aspect_id == aspect['id']:
 529                 associated_group = aspect['associated_group']
 530                 break
 531     if not associated_group:
 532         logger.error('Cannot find the corresponding element group')
 533         raise Exception('Cannot find the corresponding element group')
 534     for element_group in nf_model['element_groups']:
 535         if element_group['group_id'] == associated_group:
 536             members = element_group['members']
 537     if not members:
 538         logger.error('Cannot find the corresponding members')
 539         raise Exception('Cannot find the corresponding members')
 540     return members
 541
 542
 543 @api_view(http_method_names=['GET'])
 544 def samples(request, *args, **kwargs):
 545     return Response(data={"status": "ok"})