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 traceback
  19
  20 from rest_framework.decorators import api_view
  21 from rest_framework.response import Response
  22
  23 from driver.pub.utils import restcall
  24 from driver.pub.utils.restcall import req_by_msb, call_aai
  25
  26 logger = logging.getLogger(__name__)
  27
  28
  29 def fun_name():
  30     return "=================%s==================" % inspect.stack()[1][3]
  31
  32
  33 def ignorcase_get(args, key):
  34     if not key:
  35         return ""
  36     if not args:
  37         return ""
  38     if key in args:
  39         return args[key]
  40     for old_key in args:
  41         if old_key.upper() == key.upper():
  42             return args[old_key]
  43     return ""
  44
  45
  46 def mapping_conv(keyword_map, rest_return):
  47     resp_data = {}
  48     for param in keyword_map:
  49         if keyword_map[param]:
  50             resp_data[keyword_map[param]] = ignorcase_get(rest_return, param)
  51     return resp_data
  52
  53
  54 query_vnfd_url = "api/nslcm/v1/vnfpackage/%s"
  55 query_vnfm_url = "api/extsys/v1/vnfms/%s"
  56 query_package_url = "api/nslcm/v1/vnfpackage/%s"
  57
  58
  59 # Query vnfm_info from nslcm
  60 def get_vnfminfo_from_nslcm(vnfmid):
  61     ret = req_by_msb("api/nslcm/v1/vnfms/%s" % vnfmid, "GET")
  62     return ret
  63
  64
  65 # Query vnfm_info from esr
  66 def vnfm_get(vnfmid):
  67     ret = call_aai("api/aai-esr-server/v1/vnfms/%s" % vnfmid, "GET")
  68     return ret
  69
  70
  71 # Query vnfd_info from nslcm
  72 def vnfd_get(vnfpackageid):
  73     ret = req_by_msb("api/nslcm/v1/vnfpackage/%s" % vnfpackageid, "GET")
  74     return ret
  75
  76
  77 # Query vnfpackage_info from nslcm
  78 def vnfpackage_get(csarid):
  79     ret = req_by_msb("api/nslcm/v1/vnfpackage/%s" % csarid, "GET")
  80     return ret
  81
  82
  83 # ==================================================
  84 create_vnf_url = "v1/vnfs"
  85 create_vnf_param_mapping = {
  86     "packageUrl": "",
  87     "instantiateUrl": "",
  88     "instantiationLevel": "",
  89     "vnfInstanceName": "",
  90     "vnfPackageId": "",
  91     "vnfDescriptorId": "",
  92     "flavorId": "",
  93     "vnfInstanceDescription": "",
  94     "extVirtualLink": "",
  95     "additionalParam": ""}
  96 create_vnf_resp_mapping = {
  97     "VNFInstanceID": "vnfInstanceId",
  98     "JobId": "jobid"
  99 }
 100
 101
 102 @api_view(http_method_names=['POST'])
 103 def instantiate_vnf(request, *args, **kwargs):
 104     try:
 105         logger.debug("[%s] request.data=%s", fun_name(), request.data)
 106         vnfm_id = ignorcase_get(kwargs, "vnfmid")
 107         ret = get_vnfminfo_from_nslcm(vnfm_id)
 108         if ret[0] != 0:
 109             return Response(data={'error': ret[1]}, status=ret[2])
 110         vnfm_info = json.JSONDecoder().decode(ret[1])
 111         logger.debug("[%s] vnfm_info=%s", fun_name(), vnfm_info)
 112         vnf_package_id = ignorcase_get(request.data, "vnfPackageId")
 113         ret = vnfd_get(vnf_package_id)
 114         if ret[0] != 0:
 115             return Response(data={'error': ret[1]}, status=ret[2])
 116         vnfd_info = json.JSONDecoder().decode(ret[1])
 117         logger.debug("[%s] vnfd_info=%s", fun_name(), vnfd_info)
 118         csar_id = ignorcase_get(vnfd_info, "csarId")
 119         ret = vnfpackage_get(csar_id)
 120         if ret[0] != 0:
 121             return Response(data={'error': ret[1]}, status=ret[2])
 122         vnf_package_info = json.JSONDecoder().decode(ret[1])
 123         packageInfo = ignorcase_get(vnf_package_info, "packageInfo")
 124         logger.debug("[%s] packageInfo=%s", fun_name(), packageInfo)
 125         data = {}
 126         data["NFVOID"] = 1
 127         data["VNFMID"] = vnfm_id
 128         vnfdId = ignorcase_get(packageInfo, "vnfdId")
 129         # TODO  convert sdc vnf package to vnf vender package
 130         from urlparse import urlparse
 131         vnfm_ip = urlparse(ignorcase_get(vnfm_info, "url")).netloc.split(':')[0]
 132         VNFS = ["SPGW", "MME"]
 133         if vnfdId in VNFS:
 134             data["VNFD"] = "ftp://VMVERSION:vmversion@" + vnfm_ip + ":21/" + vnfdId
 135             data["VNFURL"] = "ftp://VMVERSION:vmversion@" + vnfm_ip + ":21/" + vnfdId
 136         else:
 137             data["VNFD"] = ignorcase_get(packageInfo, "downloadUri")
 138             data["VNFURL"] = ignorcase_get(packageInfo, "downloadUri")
 139
 140         data["extension"] = {}
 141         inputs = []
 142         for name, value in ignorcase_get(ignorcase_get(request.data, "additionalParam"), "inputs").items():
 143             inputs.append({"name": name, "value": value})
 144
 145         logger.info(
 146             "ignorcase_get(request.data, \"additionalParam\") = %s" % ignorcase_get(request.data, "additionalParam"))
 147         data["extension"]["inputs"] = json.dumps(inputs)
 148         data["extension"]["extVirtualLinks"] = ignorcase_get(
 149             ignorcase_get(request.data, "additionalParam"), "extVirtualLinks")
 150         data["extension"]["vnfinstancename"] = ignorcase_get(request.data, "vnfInstanceName")
 151         data["extension"]["vnfid"] = data["VNFD"]
 152         data["extension"]["multivim"] = 0
 153         logger.debug("[%s] call_req data=%s", fun_name(), data)
 154
 155         ret = restcall.call_req(
 156             base_url=ignorcase_get(vnfm_info, "url"),
 157             user=ignorcase_get(vnfm_info, "userName"),
 158             passwd=ignorcase_get(vnfm_info, "password"),
 159             auth_type=restcall.rest_no_auth,
 160             resource=create_vnf_url,
 161             method='post',
 162             content=json.JSONEncoder().encode(data))
 163
 164         logger.debug("[%s] call_req ret=%s", fun_name(), ret)
 165         if ret[0] != 0:
 166             return Response(data={'error': ret[1]}, status=ret[2])
 167         resp = json.JSONDecoder().decode(ret[1])
 168         resp_data = mapping_conv(create_vnf_resp_mapping, resp)
 169         logger.info("[%s]resp_data=%s", fun_name(), resp_data)
 170     except Exception as e:
 171         logger.error("Error occurred when instantiating VNF")
 172         raise e
 173     return Response(data=resp_data, status=ret[2])
 174
 175
 176 # ==================================================
 177 vnf_delete_url = "v1/vnfs/%s"
 178 vnf_delete_param_mapping = {
 179     "terminationType": "terminationType",
 180     "gracefulTerminationTimeout": "gracefulTerminationTimeout"}
 181 vnf_delete_resp_mapping = {
 182     "vnfInstanceId": "vnfInstanceId",
 183     "JobId": "jobid"}
 184
 185
 186 @api_view(http_method_names=['POST'])
 187 def terminate_vnf(request, *args, **kwargs):
 188     try:
 189         logger.debug("[%s] request.data=%s", fun_name(), request.data)
 190         vnfm_id = ignorcase_get(kwargs, "vnfmid")
 191         ret = get_vnfminfo_from_nslcm(vnfm_id)
 192         if ret[0] != 0:
 193             return Response(data={'error': ret[1]}, status=ret[2])
 194         vnfm_info = json.JSONDecoder().decode(ret[1])
 195         logger.debug("[%s] vnfm_info=%s", fun_name(), vnfm_info)
 196         data = {}
 197         logger.debug("[%s]req_data=%s", fun_name(), data)
 198         ret = restcall.call_req(
 199             base_url=ignorcase_get(vnfm_info, "url"),
 200             user=ignorcase_get(vnfm_info, "userName"),
 201             passwd=ignorcase_get(vnfm_info, "password"),
 202             auth_type=restcall.rest_no_auth,
 203             resource=vnf_delete_url % (ignorcase_get(kwargs, "vnfInstanceID")),
 204             method='delete',
 205             content=json.JSONEncoder().encode(data))
 206         if ret[0] != 0:
 207             return Response(data={'error': ret[1]}, status=ret[2])
 208         resp = json.JSONDecoder().decode(ret[1])
 209         resp_data = mapping_conv(vnf_delete_resp_mapping, resp)
 210         logger.debug("[%s]resp_data=%s", fun_name(), resp_data)
 211     except Exception as e:
 212         logger.error("Error occurred when terminating VNF")
 213         raise e
 214     return Response(data=resp_data, status=ret[2])
 215
 216
 217 # ==================================================
 218
 219
 220 vnf_detail_url = "v1/vnfs/%s"
 221 vnf_detail_resp_mapping = {
 222     "VNFInstanseStatus": "status"
 223 }
 224
 225
 226 @api_view(http_method_names=['GET'])
 227 def query_vnf(request, *args, **kwargs):
 228     try:
 229         logger.debug("[%s] request.data=%s", fun_name(), request.data)
 230         vnfm_id = ignorcase_get(kwargs, "vnfmid")
 231         ret = get_vnfminfo_from_nslcm(vnfm_id)
 232         if ret[0] != 0:
 233             return Response(data={'error': ret[1]}, status=ret[2])
 234         vnfm_info = json.JSONDecoder().decode(ret[1])
 235         logger.debug("[%s] vnfm_info=%s", fun_name(), vnfm_info)
 236         data = {}
 237         ret = restcall.call_req(
 238             base_url=ignorcase_get(vnfm_info, "url"),
 239             user=ignorcase_get(vnfm_info, "userName"),
 240             passwd=ignorcase_get(vnfm_info, "password"),
 241             auth_type=restcall.rest_no_auth,
 242             resource=vnf_detail_url % (ignorcase_get(kwargs, "vnfInstanceID")),
 243             method='get',
 244             content=json.JSONEncoder().encode(data))
 245         if ret[0] != 0:
 246             return Response(data={'error': ret[1]}, status=ret[2])
 247         resp = json.JSONDecoder().decode(ret[1])
 248         vnf_status = ignorcase_get(resp, "vnfinstancestatus")
 249         resp_data = {"vnfInfo": {"vnfStatus": vnf_status}}
 250         logger.debug("[%s]resp_data=%s", fun_name(), resp_data)
 251     except Exception as e:
 252         logger.error("Error occurred when querying VNF information.")
 253         raise e
 254     return Response(data=resp_data, status=ret[2])
 255
 256
 257 # Get Operation Status
 258 operation_status_url = '/v1/jobs/{jobId}?NFVOID={nfvoId}&VNFMID={vnfmId}&ResponseID={responseId}'
 259 operation_status_resp_map = {
 260     "JobId": "jobId",
 261     "Status": "status",
 262     "Progress": "progress",
 263     "StatusDescription": "currentStep",
 264     "ErrorCode": "errorCode",
 265     "ResponseId": "responseId",
 266     "ResponseHistoryList": "responseHistoryList",
 267     "ResponseDescriptor": "responseDescriptor"
 268 }
 269
 270
 271 @api_view(http_method_names=['GET'])
 272 def operation_status(request, *args, **kwargs):
 273     data = {}
 274     try:
 275         logger.debug("[%s] request.data=%s", fun_name(), request.data)
 276         vnfm_id = ignorcase_get(kwargs, "vnfmid")
 277         ret = get_vnfminfo_from_nslcm(vnfm_id)
 278         if ret[0] != 0:
 279             return Response(data={'error': ret[1]}, status=ret[2])
 280         vnfm_info = json.JSONDecoder().decode(ret[1])
 281         logger.debug("[%s] vnfm_info=%s", fun_name(), vnfm_info)
 282         ret = restcall.call_req(
 283             base_url=ignorcase_get(vnfm_info, 'url'),
 284             user=ignorcase_get(vnfm_info, 'userName'),
 285             passwd=ignorcase_get(vnfm_info, 'password'),
 286             auth_type=restcall.rest_no_auth,
 287             resource=operation_status_url.format(jobId=ignorcase_get(kwargs, 'jobid'), nfvoId=1,
 288                                                  vnfmId=ignorcase_get(kwargs, 'vnfmid'),
 289                                                  responseId=ignorcase_get(request.GET, 'responseId')),
 290             method='get',
 291             content=json.JSONEncoder().encode(data))
 292
 293         if ret[0] != 0:
 294             return Response(data={'error': ret[1]}, status=ret[2])
 295         resp_data = json.JSONDecoder().decode(ret[1])
 296         logger.info("[%s]resp_data=%s", fun_name(), resp_data)
 297     except Exception as e:
 298         logger.error("Error occurred when getting operation status information.")
 299         raise e
 300     return Response(data=resp_data, status=ret[2])
 301
 302
 303 # Grant VNF Lifecycle Operation
 304 grant_vnf_url = 'api/nslcm/v1/ns/grantvnf'
 305 grant_vnf_param_map = {
 306     "VNFMID": "",
 307     "NFVOID": "",
 308     "VIMID": "",
 309     "ExVIMIDList": "",
 310     "ExVIMID": "",
 311     "Tenant": "",
 312     "VNFInstanceID": "vnfInstanceId",
 313     "OperationRight": "",
 314     "VMList": "",
 315     "VMFlavor": "",
 316     "VMNumber": ""}
 317
 318
 319 @api_view(http_method_names=['PUT'])
 320 def grantvnf(request, *args, **kwargs):
 321     logger.info("=====grantvnf=====")
 322     try:
 323         resp_data = {}
 324         logger.info("req_data = %s", request.data)
 325         data = mapping_conv(grant_vnf_param_map, request.data)
 326         logger.info("grant_vnf_url = %s", grant_vnf_url)
 327         data["vnfDescriptorId"] = ""
 328         if ignorcase_get(request.data, "operationright") == 0:
 329             data["lifecycleOperation"] = "Instantiate"
 330             data["addresource"] = []
 331             for vm in ignorcase_get(request.data, "vmlist"):
 332                 for i in range(int(ignorcase_get(vm, "vmnumber"))):
 333                     data["addresource"].append(
 334                         {"type": "vdu",
 335                          "resourceDefinitionId": i,
 336                          "vdu": ignorcase_get(vm, "vmflavor"),
 337                          "vimid": ignorcase_get(vm, "vimid"),
 338                          "tenant": ignorcase_get(vm, "tenant")
 339                          })
 340
 341         data["additionalparam"] = {}
 342         data["additionalparam"]["vnfmid"] = ignorcase_get(request.data, "vnfmid")
 343         data["additionalparam"]["vimid"] = ignorcase_get(request.data, "vimid")
 344         data["additionalparam"]["tenant"] = ignorcase_get(request.data, "tenant")
 345
 346         logger.info("data = %s", data)
 347         ret = req_by_msb(grant_vnf_url, "POST", content=json.JSONEncoder().encode(data))
 348         logger.info("ret = %s", ret)
 349         if ret[0] != 0:
 350             return Response(data={'error': ret[1]}, status=ret[2])
 351         resp = json.JSONDecoder().decode(ret[1])
 352
 353         resp_data['vimid'] = ignorcase_get(resp['vim'], 'vimid')
 354         resp_data['tenant'] = ignorcase_get(ignorcase_get(resp['vim'], 'accessinfo'), 'tenant')
 355
 356         logger.info("[%s]resp_data=%s", fun_name(), resp_data)
 357     except Exception as e:
 358         logger.error("Error occurred in Grant VNF.")
 359         raise e
 360     return Response(data=resp_data, status=ret[2])
 361
 362
 363 # Notify LCM Events
 364 notify_url = 'api/nslcm/v1/ns/{vnfmid}/vnfs/{vnfInstanceId}/Notify'
 365 notify_param_map = {
 366     "NFVOID": "",
 367     "VNFMID": "VNFMID",
 368     "VIMID": "vimid",
 369     "VNFInstanceID": "vnfInstanceId",
 370     "TimeStamp": "",
 371     "EventType": "operation",
 372     "VMList": "",
 373     "VMFlavor": "",
 374     "VMNumber": "",
 375     "VMIDlist": "",
 376     "VMUUID": ""
 377 }
 378
 379
 380 @api_view(http_method_names=['POST'])
 381 def notify(request, *args, **kwargs):
 382     try:
 383         logger.info("[%s]req_data = %s", fun_name(), request.data)
 384         data = mapping_conv(notify_param_map, request.data)
 385         logger.info("[%s]data = %s", fun_name(), data)
 386
 387         data["status"] = "result"
 388         data["jobId"] = "notMust"
 389         data["affectedVnfc"] = []
 390         data["affectedVl"] = []
 391         data["affectedVirtualStorage"] = []
 392         data["affectedCp"] = []
 393
 394         affectedvnfcs = ignorcase_get(ignorcase_get(request.data, "extension"), "affectedvnfc")
 395         affectedvls = ignorcase_get(ignorcase_get(request.data, "extension"), "affectedvl")
 396         affectedcps = ignorcase_get(ignorcase_get(request.data, "extension"), "affectedcp")
 397         vnfdmodule = ignorcase_get(ignorcase_get(request.data, "extension"), "vnfdmodule")
 398
 399         data["vnfdmodule"] = vnfdmodule
 400
 401         for affectedvnfc in affectedvnfcs:
 402             data["affectedVnfc"].append({
 403                 "vnfcInstanceId": ignorcase_get(affectedvnfc, "vnfcinstanceid"),
 404                 "vduId": ignorcase_get(affectedvnfc, "vduId"),
 405                 "changeType": ignorcase_get(affectedvnfc, "changeType"),
 406                 "vimid": ignorcase_get(ignorcase_get(affectedvnfc, "computeresource"), "vimid"),
 407                 "vmId": ignorcase_get(ignorcase_get(affectedvnfc, "computeresource"), "resourceid"),
 408                 "vmName": ignorcase_get(ignorcase_get(affectedvnfc, "computeresource"), "resourcename")
 409             })
 410
 411         for affectedvl in affectedvls:
 412             data["affectedVl"].append({
 413                 "vlInstanceId": ignorcase_get(affectedvl, "virtuallinkinstanceid"),
 414                 "vimid": ignorcase_get(ignorcase_get(affectedvl, "networkresource"), "vimid"),
 415                 "vldid": ignorcase_get(affectedvl, "virtuallinkdescid"),
 416                 "vllid": ignorcase_get(ignorcase_get(affectedvl, "networkresource"), "resourceid"),
 417                 "vlName": ignorcase_get(ignorcase_get(affectedvl, "networkresource"), "resourcename")
 418             })
 419
 420         for affectedcp in affectedcps:
 421             data["affectedCp"].append(affectedcp)
 422             #     {
 423             #     "virtualLinkInstanceId": ignorcase_get(affectedcp, "virtuallinkinstanceid"),
 424             #     "ownerId": ignorcase_get(affectedcp, "ownerId"),
 425             #     "ownerType": ignorcase_get(affectedcp, "ownerType")
 426             # }
 427         ret = req_by_msb(notify_url.format(vnfmid=ignorcase_get(data, 'VNFMID'),
 428                                            vnfInstanceId=ignorcase_get(data, 'vnfinstanceid')),
 429                          "POST", content=json.JSONEncoder().encode(data))
 430
 431         logger.info("[%s]data = %s", fun_name(), ret)
 432         if ret[0] != 0:
 433             return Response(data={'error': ret[1]}, status=ret[2])
 434     except Exception as e:
 435         logger.error("Error occurred in LCM notification.")
 436         raise e
 437     return Response(data=None, status=ret[2])
 438
 439
 440 nf_scaling_url = '/v1/vnfs/{vnfInstanceID}/scale'
 441
 442
 443 @api_view(http_method_names=['POST'])
 444 def scale(request, *args, **kwargs):
 445     logger.info("====scale_vnf===")
 446     try:
 447         logger.info("request.data = %s", request.data)
 448         logger.info("requested_url = %s", request.get_full_path())
 449         vnfm_id = ignorcase_get(kwargs, "vnfmid")
 450         nf_instance_id = ignorcase_get(kwargs, "vnfInstanceId")
 451         ret = get_vnfminfo_from_nslcm(vnfm_id)
 452         if ret[0] != 0:
 453             return Response(data={'error': ret[1]}, status=ret[2])
 454         vnfm_info = json.JSONDecoder().decode(ret[1])
 455         scale_type = ignorcase_get(request.data, "type")
 456         aspect_id = ignorcase_get(request.data, "aspectId")
 457         number_of_steps = ignorcase_get(request.data, "numberOfSteps")
 458         # extension = ignorcase_get(request.data, "additionalParam")
 459         # vnfd_model = ignorcase_get(extension, "vnfdModel")
 460         data = {
 461             'vnfmid': vnfm_id,
 462             'nfvoid': 1,
 463             'scaletype': '0' if scale_type == 'SCALE_OUT' else '1',
 464             'vmlist': [{'VMNumber': number_of_steps, 'VMFlavor': aspect_id}],
 465             'extension': ''
 466         }
 467         '''
 468         for vdu_id in get_vdus(vnfd_model, aspect_id):
 469             data['vmlist'].append({
 470                 "VMFlavor": vdu_id,
 471                 "VMNumber": number_of_steps
 472             })
 473         '''
 474         logger.info("data = %s", data)
 475         ret = restcall.call_req(
 476             base_url=ignorcase_get(vnfm_info, "url"),
 477             user=ignorcase_get(vnfm_info, "userName"),
 478             passwd=ignorcase_get(vnfm_info, "password"),
 479             auth_type=restcall.rest_no_auth,
 480             resource=nf_scaling_url.format(vnfInstanceID=nf_instance_id),
 481             method='put',  # POST
 482             content=json.JSONEncoder().encode(data))
 483         logger.info("ret=%s", ret)
 484         if ret[0] != 0:
 485             return Response(data={'error': 'scale error'}, status=ret[2])
 486         resp_data = json.JSONDecoder().decode(ret[1])
 487         # jobId = resp_data["jobid"]
 488         logger.info("resp_data=%s", resp_data)
 489     except Exception as e:
 490         logger.error("Error occurred when scaling VNF,error:%s", e.message)
 491         logger.error(traceback.format_exc())
 492         return Response(data={'error': 'scale expection'}, status='500')
 493     return Response(data=resp_data, status=ret[2])
 494
 495
 496 nf_healing_url = '/api/v1/nf_m_i/nfs/{vnfInstanceID}/vms/operation'
 497
 498
 499 @api_view(http_method_names=['POST'])
 500 def heal(request, *args, **kwargs):
 501     logger.info("====heal_vnf===")
 502     try:
 503         logger.info("request.data = %s", request.data)
 504         logger.info("requested_url = %s", request.get_full_path())
 505         vnfm_id = ignorcase_get(kwargs, "vnfmid")
 506         nf_instance_id = ignorcase_get(kwargs, "vnfInstanceId")
 507         ret = get_vnfminfo_from_nslcm(vnfm_id)
 508         if ret[0] != 0:
 509             return Response(data={'error': ret[1]}, status=ret[2])
 510         vnfm_info = json.JSONDecoder().decode(ret[1])
 511         data = request.data
 512         data['lifecycleoperation'] = 'operate'
 513         data['isgrace'] = 'force'
 514
 515         logger.info("data = %s", data)
 516         ret = restcall.call_req(
 517             base_url=ignorcase_get(vnfm_info, "url"),
 518             user=ignorcase_get(vnfm_info, "userName"),
 519             passwd=ignorcase_get(vnfm_info, "password"),
 520             auth_type=restcall.rest_no_auth,
 521             resource=nf_healing_url.format(vnfInstanceID=nf_instance_id),
 522             method='put',  # POST
 523             content=json.JSONEncoder().encode(data))
 524         logger.info("ret=%s", ret)
 525         if ret[0] != 0:
 526             return Response(data={'error': 'heal error'}, status=ret[2])
 527         resp_data = json.JSONDecoder().decode(ret[1])
 528         # jobId = resp_data["jobid"]
 529         logger.info("resp_data=%s", resp_data)
 530     except Exception as e:
 531         logger.error("Error occurred when healing VNF,error:%s", e.message)
 532         logger.error(traceback.format_exc())
 533         return Response(data={'error': 'heal expection'}, status='500')
 534     return Response(data=resp_data, status=ret[2])
 535
 536
 537 def get_vdus(nf_model, aspect_id):
 538     associated_group = ''
 539     members = []
 540     vnf_flavours = nf_model['vnf_flavours']
 541     for vnf_flaour in vnf_flavours:
 542         scaling_aspects = vnf_flaour['scaling_aspects']
 543         for aspect in scaling_aspects:
 544             if aspect_id == aspect['id']:
 545                 associated_group = aspect['associated_group']
 546                 break
 547     if not associated_group:
 548         logger.error('Cannot find the corresponding element group')
 549         raise Exception('Cannot find the corresponding element group')
 550     for element_group in nf_model['element_groups']:
 551         if element_group['group_id'] == associated_group:
 552             members = element_group['members']
 553     if not members:
 554         logger.error('Cannot find the corresponding members')
 555         raise Exception('Cannot find the corresponding members')
 556     return members
 557
 558
 559 @api_view(http_method_names=['GET'])
 560 def samples(request, *args, **kwargs):
 561     return Response(data={"status": "ok"})