lcm/ns/biz/ns_heal.py

   1 # Copyright 2017 Intel 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 datetime
  16 import logging
  17 import threading
  18 import time
  19 import traceback
  20
  21 from lcm.ns.enum import NS_INST_STATUS
  22 from lcm.pub.database.models import JobModel, NSInstModel, NfInstModel, VNFCInstModel, VmInstModel
  23 from lcm.pub.exceptions import NSLCMException
  24 from lcm.pub.utils.jobutil import JobUtil, JOB_MODEL_STATUS
  25 from lcm.pub.utils.values import ignore_case_get
  26 from lcm.ns_vnfs.biz.heal_vnfs import NFHealService
  27 from lcm.ns.biz.ns_lcm_op_occ import NsLcmOpOcc
  28
  29 JOB_ERROR = 255
  30 logger = logging.getLogger(__name__)
  31
  32
  33 class NSHealService(threading.Thread):
  34     def __init__(self, ns_instance_id, request_data, job_id):
  35         super(NSHealService, self).__init__()
  36         self.ns_instance_id = ns_instance_id
  37         self.request_data = request_data
  38         self.job_id = job_id
  39         self.occ_id = NsLcmOpOcc.create(ns_instance_id, "HEAL", "PROCESSING", False, request_data)
  40         self.heal_vnf_data = ''
  41         self.heal_ns_data = ''
  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             NsLcmOpOcc.update(self.occ_id, operationState="FAILED", error=e.message)
  49         except Exception as e:
  50             logger.error(traceback.format_exc())
  51             JobUtil.add_job_status(self.job_id, JOB_ERROR, 'ns heal fail')
  52             NsLcmOpOcc.update(self.occ_id, operationState="FAILED", error=e.message)
  53
  54     def do_biz(self):
  55         self.update_job(1, desc='ns heal start')
  56         self.get_and_check_params()
  57         self.update_ns_status(NS_INST_STATUS.HEALING)
  58         self.do_heal()
  59         self.update_ns_status(NS_INST_STATUS.ACTIVE)
  60         self.update_job(100, desc='ns heal success')
  61         NsLcmOpOcc.update(self.occ_id, "COMPLETED")
  62
  63     def get_and_check_params(self):
  64         ns_info = NSInstModel.objects.filter(id=self.ns_instance_id)
  65         if not ns_info:
  66             errmsg = 'NS [id=%s] does not exist' % self.ns_instance_id
  67             logger.error(errmsg)
  68             raise NSLCMException(errmsg)
  69
  70         self.heal_ns_data = ignore_case_get(self.request_data, 'healNsData')
  71         self.heal_vnf_data = ignore_case_get(self.request_data, 'healVnfData')
  72
  73         if self.heal_ns_data and self.heal_vnf_data:
  74             errmsg = 'healNsData and healVnfData can not exist together'
  75             logger.error(errmsg)
  76             raise NSLCMException(errmsg)
  77
  78         if not self.heal_ns_data and not self.heal_vnf_data:
  79             errmsg = 'healNsData and healVnfData parameters does not exist or value is incorrect.'
  80             logger.error(errmsg)
  81             raise NSLCMException(errmsg)
  82
  83     def do_heal(self):
  84         if self.heal_vnf_data:
  85             vnf_heal_params = self.prepare_vnf_heal_params(self.heal_vnf_data)
  86             status = self.do_vnf_or_ns_heal(vnf_heal_params, 15)
  87             if status is JOB_MODEL_STATUS.FINISHED:
  88                 logger.info('nf[%s] heal handle end' % vnf_heal_params.get('vnfInstanceId'))
  89                 self.update_job(90, desc='nf[%s] heal handle end' % vnf_heal_params.get('vnfInstanceId'))
  90             else:
  91                 errmsg = 'nf heal failed'
  92                 logger.error(errmsg)
  93                 raise NSLCMException(errmsg)
  94         else:
  95             ns_heal_params = self.prepare_ns_heal_params(self.heal_ns_data)
  96             for ns_heal_param in ns_heal_params:
  97                 status = self.do_vnf_or_ns_heal(ns_heal_param, 15)
  98                 if status is JOB_MODEL_STATUS.FINISHED:
  99                     logger.info('nf[%s] heal handle end' % ns_heal_param.get('vnfInstanceId'))
 100                     self.update_job(90, desc='nf[%s] heal handle end' % ns_heal_param.get('vnfInstanceId'))
 101                 else:
 102                     errmsg = 'nf heal failed'
 103                     logger.error(errmsg)
 104                     raise NSLCMException(errmsg)
 105
 106     def do_vnf_or_ns_heal(self, heal_param, progress):
 107         instance_id = heal_param.get('vnfInstanceId')
 108         nf_service = NFHealService(instance_id, heal_param)
 109         nf_service.start()
 110         self.update_job(
 111             progress, desc='nf[%s] heal handle start' % instance_id)
 112         status = self.wait_job_finish(nf_service.job_id)
 113         return status
 114
 115     def prepare_ns_heal_params(self, ns_data):
 116         degree_healing = ignore_case_get(ns_data, 'degreeHealing')
 117         if not degree_healing:
 118             errmsg = 'degreeHealing does not exist.'
 119             logger.error(errmsg)
 120             raise NSLCMException(errmsg)
 121         ns_instance_id = self.ns_instance_id
 122         cause = 'vm is down'
 123         # action = ignore_case_get(ns_data, 'actionsHealing')
 124         if degree_healing == "HEAL_RESTORE":
 125             ns_inst_infos = NfInstModel.objects.filter(ns_inst_id=self.ns_instance_id)
 126             if not ns_inst_infos.exists():
 127                 raise NSLCMException('NSInsts(%s) does not exist' % self.ns_instance_id)
 128             result_arr = []
 129             for ns_inst_info in ns_inst_infos:
 130                 vnfc_insts = VNFCInstModel.objects.filter(nfinstid=ns_inst_info.nfinstid)
 131                 # If a condition is not met, will it all terminate?
 132                 if not vnfc_insts.exists():
 133                     raise NSLCMException('vnfcinsts(%s) does not exist' % ns_inst_info.nfinstid)
 134                 for vnfc_inst in vnfc_insts:
 135                     vm_id = vnfc_inst.vmid
 136                     vdu_id = vnfc_inst.vduid
 137                     vm_inst_info = VmInstModel.objects.filter(vmid=vm_id)
 138                     if not vm_inst_info.exists():
 139                         raise NSLCMException('vminstinfo(%s) does not exist' % vm_id)
 140                     vm_name = vm_inst_info[0].vmname
 141
 142                     result = {
 143                         "vnfInstanceId": ns_instance_id,
 144                         "cause": cause,
 145                         "additionalParams": {
 146                             "action": "restartvm",
 147                             "actionvminfo": {
 148                                 "vmid": vm_id,
 149                                 "vduid": vdu_id,
 150                                 "vmname": vm_name
 151                             }
 152                         }
 153                     }
 154                     result_arr.append(result)
 155             return result_arr
 156         else:
 157             errmsg = 'The degree of healing dose not exist or value is incorrect.'
 158             logger.error(errmsg)
 159             raise NSLCMException(errmsg)
 160
 161     def prepare_vnf_heal_params(self, vnf_data):
 162         vnf_instance_id = ignore_case_get(vnf_data, 'vnfInstanceId')
 163         if not vnf_instance_id:
 164             errmsg = 'vnfinstanceid does not exist or value is incorrect.'
 165             logger.error(errmsg)
 166             raise NSLCMException(errmsg)
 167         cause = ignore_case_get(vnf_data, 'cause')
 168         additional_params = ignore_case_get(vnf_data, 'additionalParams')
 169         action = ignore_case_get(additional_params, 'action')
 170         action_vm_info = ignore_case_get(additional_params, 'actionvminfo')
 171         vm_id = ignore_case_get(action_vm_info, 'vmid')
 172         vdu_id = ignore_case_get(action_vm_info, 'vduid')
 173         vm_name = ignore_case_get(action_vm_info, 'vmname')
 174
 175         result = {
 176             "vnfInstanceId": vnf_instance_id,
 177             "cause": cause,
 178             "additionalParams": {
 179                 "action": action,
 180                 "actionvminfo": {
 181                     "vmid": vm_id,
 182                     "vduid": vdu_id,
 183                     "vmname": vm_name
 184                 }
 185             }
 186         }
 187         return result
 188
 189     @staticmethod
 190     def wait_job_finish(sub_job_id, timeout=3600):
 191         query_interval = 2
 192         start_time = end_time = datetime.datetime.now()
 193         while (end_time - start_time).seconds < timeout:
 194             job_result = JobModel.objects.get(jobid=sub_job_id)
 195             time.sleep(query_interval)
 196             end_time = datetime.datetime.now()
 197             if job_result.progress == 100:
 198                 return JOB_MODEL_STATUS.FINISHED
 199             elif job_result.progress > 100:
 200                 return JOB_MODEL_STATUS.ERROR
 201             else:
 202                 continue
 203         return JOB_MODEL_STATUS.TIMEOUT
 204
 205     def update_job(self, progress, desc=''):
 206         JobUtil.add_job_status(self.job_id, progress, desc)
 207
 208     def update_ns_status(self, status):
 209         NSInstModel.objects.filter(
 210             id=self.ns_instance_id).update(status=status)