lcm/ns/ns_terminate.py

   1 # Copyright 2016 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 json
  16 import logging
  17 import math
  18 import threading
  19 import time
  20 import traceback
  21
  22 from lcm.ns.vnfs.wait_job import wait_job_finish
  23 from lcm.pub.database.models import NSInstModel, VLInstModel, FPInstModel, NfInstModel
  24 from lcm.pub.exceptions import NSLCMException
  25 from lcm.pub.msapi.nslcm import call_from_ns_cancel_resource
  26 from lcm.pub.utils.jobutil import JOB_MODEL_STATUS, JobUtil
  27 from lcm.pub.utils.values import ignore_case_get
  28
  29 JOB_ERROR = 255
  30 # [delete vnf try times]
  31
  32 logger = logging.getLogger(__name__)
  33
  34
  35 class TerminateNsService(threading.Thread):
  36     def __init__(self, ns_inst_id, terminate_type, terminate_timeout, job_id):
  37         threading.Thread.__init__(self)
  38         self.ns_inst_id = ns_inst_id
  39         self.terminate_type = terminate_type
  40         self.terminate_timeout = terminate_timeout
  41         self.job_id = job_id
  42         self.vnfm_inst_id = ''
  43
  44     def run(self):
  45         try:
  46             self.do_biz()
  47         except NSLCMException as e:
  48             JobUtil.add_job_status(self.job_id, JOB_ERROR, e.message)
  49         except:
  50             logger.error(traceback.format_exc())
  51             JobUtil.add_job_status(self.job_id, JOB_ERROR, "ns terminate fail.", '')
  52
  53     def do_biz(self):
  54         if not self.check_data():
  55             JobUtil.add_job_status(self.job_id, 100, "Need not terminate.", '')
  56             return
  57
  58         self.cancel_sfc_list()
  59         self.cancel_vnf_list()
  60         time.sleep(4)
  61         self.cancel_vl_list()
  62
  63         self.finaldata()
  64
  65     def check_data(self):
  66         JobUtil.add_job_status(self.job_id, 0, "TERMINATING...", '')
  67         ns_inst = NSInstModel.objects.filter(id=self.ns_inst_id)
  68         if not ns_inst.exists():
  69             logger.warn('ns instance [%s] does not exist.' % self.ns_inst_id)
  70             return False
  71         JobUtil.add_job_status(self.job_id, 10, "Ns cancel: check ns_inst_id success", '')
  72         return True
  73
  74     # delete VLINST
  75     def cancel_vl_list(self):
  76         array_vlinst = VLInstModel.objects.filter(ownertype='2', ownerid=self.ns_inst_id)
  77         if not array_vlinst:
  78             logger.error("[cancel_vl_list] no vlinst attatch to ns_inst_id:%s" % self.ns_inst_id)
  79             return
  80         step_progress = 20 / len(array_vlinst)
  81         cur_progress = 70
  82         for vlinst in array_vlinst:
  83             tmp_msg = vlinst.vlinstanceid
  84             try:
  85                 ret = self.delete_vl(tmp_msg)
  86                 if ret[0] == 0:
  87                     cur_progress += step_progress
  88                     result = json.JSONDecoder().decode(ret[1]).get("result", "")
  89                     if str(result) == '0':
  90                         JobUtil.add_job_status(self.job_id, cur_progress, "Delete vlinst:[%s] success." % tmp_msg, '')
  91                     else:
  92                         JobUtil.add_job_status(self.job_id, cur_progress, "Delete vlinst:[%s] failed." % tmp_msg, '')
  93                         return 'false'
  94                 else:
  95                     NSInstModel.objects.filter(id=self.ns_inst_id).update(status='FAILED')
  96                     return 'false'
  97             except Exception as e:
  98                 logger.error("[cancel_vl_list] error[%s]!" % e.message)
  99                 logger.error(traceback.format_exc())
 100                 JobUtil.add_job_status(self.job_id, cur_progress, "Delete vlinst:[%s] Failed." % tmp_msg, '')
 101                 return 'false'
 102         return 'true'
 103
 104     # delete SFC
 105     def cancel_sfc_list(self):
 106         array_sfcinst = FPInstModel.objects.filter(nsinstid=self.ns_inst_id)
 107         if not array_sfcinst:
 108             logger.error("[cancel_sfc_list] no sfcinst attatch to ns_inst_id:%s" % self.ns_inst_id)
 109             return
 110         step_progress = 20 / len(array_sfcinst)
 111         cur_progress = 30
 112         for sfcinst in array_sfcinst:
 113             tmp_msg = sfcinst.sfcid
 114             try:
 115                 ret = self.delete_sfc(tmp_msg)
 116                 if ret[0] == 0:
 117                     cur_progress += step_progress
 118                     result = json.JSONDecoder().decode(ret[1]).get("result", "")
 119                     if str(result) == '0':
 120                         JobUtil.add_job_status(self.job_id, cur_progress, "Delete sfcinst:[%s] success." % tmp_msg, '')
 121                     else:
 122                         JobUtil.add_job_status(self.job_id, cur_progress, "Delete sfcinst:[%s] failed." % tmp_msg, '')
 123                         return 'false'
 124                 else:
 125                     NSInstModel.objects.filter(id=self.ns_inst_id).update(status='FAILED')
 126                     return 'false'
 127             except Exception as e:
 128                 logger.error("[cancel_sfc_list] error[%s]!" % e.message)
 129                 logger.error(traceback.format_exc())
 130                 JobUtil.add_job_status(self.job_id, cur_progress, "Delete sfcinst:[%s] Failed." % tmp_msg, '')
 131                 return 'false'
 132         return 'true'
 133
 134     # delete Vnf
 135     def cancel_vnf_list(self):
 136         array_vnfinst = NfInstModel.objects.filter(ns_inst_id=self.ns_inst_id)
 137         if not array_vnfinst:
 138             logger.error("[cancel_vnf_list] no vnfinst attatch to ns_inst_id:%s" % self.ns_inst_id)
 139             return
 140         step_progress = 20 / len(array_vnfinst)
 141         cur_progress = 50
 142         for vnfinst in array_vnfinst:
 143             tmp_msg = vnfinst.nfinstid
 144             try:
 145                 self.delete_vnf(tmp_msg)
 146                 cur_progress += step_progress
 147                 JobUtil.add_job_status(self.job_id, cur_progress, "Delete vnfinst:[%s] success." % tmp_msg, '')
 148             except Exception as e:
 149                 logger.error("[cancel_vnf_list] error[%s]!" % e.message)
 150                 logger.error(traceback.format_exc())
 151                 JobUtil.add_job_status(self.job_id, cur_progress, "Delete vnfinst:[%s] Failed." % tmp_msg, '')
 152                 return 'false'
 153         return 'true'
 154
 155     def delete_vnf(self, nf_instid):
 156         ret = call_from_ns_cancel_resource('vnf', nf_instid)
 157         self.delete_resource(ret)
 158
 159     def delete_sfc(self, sfc_instid):
 160         ret = call_from_ns_cancel_resource('sfc', sfc_instid)
 161         return ret
 162
 163     def delete_vl(self, vl_instid):
 164         ret = call_from_ns_cancel_resource('vl', vl_instid)
 165         return ret
 166
 167     def delete_resource(self, result):
 168         logger.debug("terminate_type=%s, result=%s", self.terminate_type, result)
 169         if result[0] == 0:
 170             job_info = json.JSONDecoder().decode(result[1])
 171             vnfm_job_id = ignore_case_get(job_info, "jobid")
 172             self.add_progress(5, "SEND_TERMINATE_REQ_SUCCESS")
 173             if self.terminate_type == 'forceful':
 174                 ret = wait_job_finish(self.vnfm_inst_id, self.job_id, vnfm_job_id,
 175                                       progress_range=[10, 50],
 176                                       timeout=self.terminate_timeout,
 177                                       job_callback=TerminateNsService.wait_job_mode_callback, mode='1')
 178                 if ret != JOB_MODEL_STATUS.FINISHED:
 179                     logger.error('[NS terminate] VNFM terminate ns failed')
 180                     NSInstModel.objects.filter(id=self.ns_inst_id).update(status='FAILED')
 181                     raise NSLCMException("DELETE_NS_RESOURCE_FAILED")
 182         else:
 183             logger.error('[NS terminate] VNFM terminate ns failed')
 184             NSInstModel.objects.filter(id=self.ns_inst_id).update(status='FAILED')
 185             raise NSLCMException("DELETE_NS_RESOURCE_FAILED")
 186
 187     def exception(self):
 188         NSInstModel.objects.filter(id=self.ns_inst_id).update(status='FAILED')
 189         raise NSLCMException("DELETE_NS_RESOURCE_FAILED")
 190
 191     def finaldata(self):
 192         NSInstModel.objects.filter(id=self.ns_inst_id).update(status='null')
 193         JobUtil.add_job_status(self.job_id, 100, "ns terminate ends.", '')
 194
 195     @staticmethod
 196     def call_vnfm_to_cancel_resource(res_type, instid):
 197         ret = call_from_ns_cancel_resource(res_type, instid)
 198         return ret
 199
 200     def add_progress(self, progress, status_decs, error_code=""):
 201         JobUtil.add_job_status(self.job_id, progress, status_decs, error_code)
 202
 203     @staticmethod
 204     def wait_job_mode_callback(vnfo_job_id, vnfm_job_id, job_status, jobs, progress_range, **kwargs):
 205         for job in jobs:
 206             progress = TerminateNsService.calc_progress_over_100(job['progress'], progress_range)
 207             if 255 == progress and '1' == kwargs['mode']:
 208                 break
 209             JobUtil.add_job_status(vnfo_job_id, progress, job.get('statusdescription', ''), job.get('errorcode', ''))
 210
 211         latest_progress = TerminateNsService.calc_progress_over_100(job_status['progress'], progress_range)
 212         if 255 == latest_progress and '1' == kwargs['mode']:
 213             JobUtil.add_job_status(vnfo_job_id, progress_range[1], job_status.get('statusdescription', ''),
 214                                    job_status.get('errorcode', ''))
 215         else:
 216             JobUtil.add_job_status(vnfo_job_id, latest_progress, job_status.get('statusdescription', ''),
 217                                    job_status.get('errorcode', ''))
 218         if job_status['status'] in ('error', 'finished'):
 219             return True, job_status['status']
 220         return False, 'processing'
 221
 222     @staticmethod
 223     def wait_job_finish_common_call_back(vnfo_job_id, vnfm_job_id, job_status, jobs, progress_range, **kwargs):
 224         error_254 = False
 225         for job in jobs:
 226             progress = TerminateNsService.calc_progress_over_100(job['progress'], progress_range)
 227             if 254 == progress:
 228                 logger.debug("=========254==============")
 229                 progress = 255
 230                 error_254 = True
 231             JobUtil.add_job_status(vnfo_job_id, progress, job.get('statusdescription', ""), job.get('errorcode', ""))
 232         latest_progress = TerminateNsService.calc_progress_over_100(job_status['progress'], progress_range)
 233         if 254 == latest_progress:
 234             logger.debug("=========254==============")
 235             latest_progress = 255
 236             error_254 = True
 237         JobUtil.add_job_status(vnfo_job_id, latest_progress, job_status.get('statusdescription', ""),
 238                                job_status.get('errorcode', ""))
 239         # return error_254
 240         if error_254:
 241             logger.debug("return 254")
 242             return True, 'error_254'
 243         if job_status['status'] in ('error', 'finished'):
 244             return True, job_status['status']
 245         return False, 'processing'
 246
 247     @staticmethod
 248     def calc_progress_over_100(vnfm_progress, target_range=None):
 249         if target_range is None:
 250             target_range = [0, 100]
 251         progress = int(vnfm_progress)
 252         if progress > 100:
 253             return progress
 254         floor_progress = int(math.floor(float(target_range[1] - target_range[0]) / 100 * progress))
 255         target_range = floor_progress + target_range[0]
 256         return target_range