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