lcm/ns/vnfs/terminate_nfs.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 logging
  15 import traceback
  16 import json
  17
  18 import threading
  19
  20 from lcm.ns.vnfs.wait_job import wait_job_finish
  21 from lcm.pub.config.config import REPORT_TO_AAI
  22 from lcm.pub.database.models import NfInstModel
  23 from lcm.ns.vnfs.const import VNF_STATUS, NFVO_VNF_INST_TIMEOUT_SECOND
  24 from lcm.pub.msapi.aai import query_vnf_aai, delete_vnf_aai
  25 from lcm.pub.utils.values import ignore_case_get
  26 from lcm.pub.utils.jobutil import JOB_MODEL_STATUS, JobUtil
  27 from lcm.pub.exceptions import NSLCMException
  28 from lcm.pub.msapi.vnfmdriver import send_nf_terminate_request
  29 from lcm.pub.msapi import resmgr
  30
  31 logger = logging.getLogger(__name__)
  32
  33
  34 class TerminateVnfs(threading.Thread):
  35     def __init__(self, data, vnf_inst_id, job_id):
  36         threading.Thread.__init__(self)
  37         self.vnf_inst_id = vnf_inst_id
  38         self.job_id = job_id
  39         self.vnfm_inst_id = ''
  40         self.vnf_uuid = ''
  41         self.vnfm_job_id = ''
  42         self.terminationType = data['terminationType']
  43         self.gracefulTerminationTimeout = data['gracefulTerminationTimeout']
  44         self.initdata()
  45
  46     def run(self):
  47         try:
  48             self.check_nf_valid()
  49             self.send_nf_terminate_to_vnfmDriver()
  50             self.wait_vnfm_job_finish()
  51             self.send_terminate_vnf_to_resMgr()
  52             self.delete_data_from_db()
  53             if REPORT_TO_AAI:
  54                 self.delete_vnf_in_aai()
  55         except NSLCMException as e:
  56             self.exception(e.message)
  57         except Exception:
  58             logger.error(traceback.format_exc())
  59             self.exception('unexpected exception')
  60
  61     def set_vnf_status(self, vnf_inst_info):
  62         vnf_status = vnf_inst_info.status
  63         if (vnf_status == VNF_STATUS.TERMINATING):
  64             logger.info('[VNF terminate] VNF is dealing by other application,try again later.')
  65             raise NSLCMException('[VNF terminate] VNF is dealing by other application,try again later.')
  66         else:
  67             vnf_inst_info.status = VNF_STATUS.TERMINATING
  68             vnf_inst_info.save()
  69
  70     def check_vnf_is_exist(self):
  71         vnf_inst = NfInstModel.objects.filter(nfinstid=self.vnf_inst_id)
  72         if not vnf_inst.exists():
  73             logger.warning('[VNF terminate] Vnf terminate [%s] is not exist.' % self.vnf_inst_id)
  74             return None
  75         return vnf_inst[0]
  76
  77     def add_progress(self, progress, status_decs, error_code=""):
  78         JobUtil.add_job_status(self.job_id, progress, status_decs, error_code)
  79
  80     def initdata(self):
  81         vnf_inst_info = self.check_vnf_is_exist()
  82         if not vnf_inst_info:
  83             self.add_progress(100, "TERM_VNF_NOT_EXIST_SUCCESS", "finished")
  84         self.add_progress(2, "GET_VNF_INST_SUCCESS")
  85         self.vnfm_inst_id = vnf_inst_info.vnfm_inst_id
  86         self.vnf_uuid = vnf_inst_info.mnfinstid
  87         if not self.vnf_uuid:
  88             self.add_progress(100, "TERM_VNF_NOT_EXIST_SUCCESS", "finished")
  89
  90     def check_nf_valid(self):
  91         vnf_inst = NfInstModel.objects.filter(nfinstid=self.vnf_inst_id)
  92         if not vnf_inst.exists():
  93             logger.warning('[VNF terminate] Vnf instance [%s] is not exist.' % self.vnf_inst_id)
  94             raise NSLCMException('[VNF terminate] Vnf instance is not exist.')
  95         if not vnf_inst:
  96             self.add_progress(100, "TERM_VNF_NOT_EXIST_SUCCESS", "finished")
  97             raise NSLCMException('[VNF terminate] Vnf instance is not exist.')
  98         self.set_vnf_status(vnf_inst[0])
  99
 100     def exception(self, error_msg):
 101         logger.error('VNF Terminate failed, detail message: %s' % error_msg)
 102         NfInstModel.objects.filter(nfinstid=self.vnf_inst_id).update(status=VNF_STATUS.FAILED)
 103         JobUtil.add_job_status(self.job_id, 255, 'VNF Terminate failed, detail message: %s' % error_msg, 0)
 104
 105     def send_nf_terminate_to_vnfmDriver(self):
 106         req_param = json.JSONEncoder().encode({
 107             'terminationType': self.terminationType,
 108             'gracefulTerminationTimeout': self.gracefulTerminationTimeout})
 109         rsp = send_nf_terminate_request(self.vnfm_inst_id, self.vnf_uuid, req_param)
 110         self.vnfm_job_id = ignore_case_get(rsp, 'jobId')
 111
 112     def send_terminate_vnf_to_resMgr(self):
 113         resmgr.terminate_vnf(self.vnf_inst_id)
 114
 115     def wait_vnfm_job_finish(self):
 116         if not self.vnfm_job_id:
 117             logger.warn("No Job, need not wait")
 118             return
 119         ret = wait_job_finish(vnfm_id=self.vnfm_inst_id, vnfo_job_id=self.job_id,
 120             vnfm_job_id=self.vnfm_job_id, progress_range=[10, 90],
 121             timeout=NFVO_VNF_INST_TIMEOUT_SECOND)
 122
 123         if ret != JOB_MODEL_STATUS.FINISHED:
 124             logger.error('VNF terminate failed on VNFM side.')
 125             raise NSLCMException('VNF terminate failed on VNFM side.')
 126
 127     def delete_data_from_db(self):
 128         NfInstModel.objects.filter(nfinstid=self.vnf_inst_id).delete()
 129         JobUtil.add_job_status(self.job_id, 100, 'vnf terminate success', 0)
 130
 131     def delete_vnf_in_aai(self):
 132         logger.debug("TerminateVnfs::delete_vnf_in_aai::delete vnf instance[%s] in aai." % self.vnf_inst_id)
 133
 134         # query vnf instance in aai, get resource_version
 135         customer_info = query_vnf_aai(self.vnf_inst_id)
 136         resource_version = customer_info["resource-version"]
 137
 138         # delete vnf instance from aai
 139         resp_data, resp_status = delete_vnf_aai(self.vnf_inst_id, resource_version)
 140         if resp_data:
 141             logger.debug("Fail to delete vnf instance[%s] from aai, resp_status: [%s]." % (self.vnf_inst_id, resp_status))
 142         else:
 143             logger.debug(
 144                 "Success to delete vnf instance[%s] from aai, resp_status: [%s]." % (self.vnf_inst_id, resp_status))