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# Copyright (C) 2018 Verizon. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import json
import logging
import traceback
from threading import Thread
from lcm.pub.database.models import NfInstModel, VmInstModel
from lcm.pub.exceptions import NFLCMException
from lcm.pub.msapi.gvnfmdriver import notify_lcm_to_nfvo, prepare_notification_data
from lcm.pub.utils.jobutil import JobUtil
from lcm.pub.utils.timeutil import now_time
from lcm.pub.utils.values import ignore_case_get
from lcm.pub.vimapi import adaptor
from lcm.nf.biz.grant_vnf import grant_resource
from lcm.nf.const import VNF_STATUS, GRANT_TYPE, HEAL_ACTION_TYPE, CHANGE_TYPE, OPERATION_TYPE
from lcm.nf.biz import common
logger = logging.getLogger(__name__)
class HealVnf(Thread):
def __init__(self, data, nf_inst_id, job_id):
super(HealVnf, self).__init__()
self.data = data
self.nf_inst_id = nf_inst_id
self.job_id = job_id
self.affectedvm = ignore_case_get(ignore_case_get(self.data, "additionalParams"), "affectedvm")
# TODO: Check if we could move the action param into the list of affectedvm structure
self.action = ignore_case_get(ignore_case_get(self.data, "additionalParams"), "action")
self.grant_type = ""
if self.action == HEAL_ACTION_TYPE.START:
self.grant_type = GRANT_TYPE.HEAL_CREATE
elif self.action == HEAL_ACTION_TYPE.RESTART:
self.grant_type = GRANT_TYPE.HEAL_RESTART
def run(self):
try:
self.heal_pre()
self.apply_grant()
self.heal_resource()
JobUtil.add_job_status(self.job_id, 100, "Heal Vnf success.")
NfInstModel.objects.filter(nfinstid=self.nf_inst_id).update(status='INSTANTIATED', lastuptime=now_time())
self.lcm_notify()
except NFLCMException as e:
logger.error(e.message)
self.vnf_heal_failed_handle(e.message)
except Exception as e:
logger.error(e.message)
self.vnf_heal_failed_handle(traceback.format_exc())
def heal_pre(self):
if self.action not in (HEAL_ACTION_TYPE.START, HEAL_ACTION_TYPE.RESTART):
raise NFLCMException("Action type in Request in invalid. Should be %s or %s" % (HEAL_ACTION_TYPE.START, HEAL_ACTION_TYPE.RESTART))
self.vm_id = ignore_case_get(self.affectedvm, "vmid")
self.vdu_id = ignore_case_get(self.affectedvm, "vduid")
self.vm_name = ignore_case_get(self.affectedvm, "vmname")
if not (self.vm_id and self.vdu_id and self.vm_name):
raise NFLCMException("VM identifiers is not present in request.")
self.vnf_insts = NfInstModel.objects.filter(nfinstid=self.nf_inst_id)
self.vnfd_info = json.loads(self.vnf_insts[0].vnfd_model)
def apply_grant(self):
if self.action == HEAL_ACTION_TYPE.RESTART:
self.vdu = VmInstModel.objects.filter(instid=self.nf_inst_id, is_predefined=1, vmid=self.vm_id, vmname=self.vm_name)
if not self.vdu:
raise NFLCMException("VNF Vm does not exist.")
self.vimid = self.vdu[0].vimid
self.tenant = self.vdu[0].tenant
elif self.action == HEAL_ACTION_TYPE.START:
vdus = ignore_case_get(self.vnfd_info, "vdus")
self.vdu = [elem for elem in vdus if ignore_case_get(elem, "vdu_id") == self.vdu_id]
if not self.vdu:
raise NFLCMException("VNF Vm does not exist.")
apply_result = grant_resource(data=self.data, nf_inst_id=self.nf_inst_id, job_id=self.job_id,
grant_type=self.grant_type, vdus=self.vdu)
if self.action == HEAL_ACTION_TYPE.START:
self.vimid = ignore_case_get(apply_result, "vimid"),
self.tenant = ignore_case_get(apply_result, "tenant")
logger.info("Grant resource, response: %s" % apply_result)
JobUtil.add_job_status(self.job_id, 20, 'Nf Healing grant_resource finish')
def heal_resource(self):
logger.info('Heal resource begin')
data = {'action': self.action, 'vimid': self.vimid, 'tenant': self.tenant}
adaptor.heal_vim_res(self.vdu, self.vnfd_info, self.do_notify, data, json.loads(self.vnf_insts[0].vimInfo), json.loads(self.vnf_insts[0].resInfo))
logger.info('Heal resource complete')
def do_notify(self, res_type, ret):
logger.info('Creating [%s] resource' % res_type)
resource_save_method = getattr(common, res_type + '_save')
resource_save_method(self.job_id, self.nf_inst_id, ret)
def lcm_notify(self):
notification_content = prepare_notification_data(self.nf_inst_id, self.job_id, CHANGE_TYPE.MODIFIED, OPERATION_TYPE.HEAL)
logger.info('Notify request data = %s' % notification_content)
resp = notify_lcm_to_nfvo(json.dumps(notification_content))
logger.info('Lcm notify end, response %s' % resp)
def vnf_heal_failed_handle(self, error_msg):
logger.error('VNF Healing failed, detail message: %s' % error_msg)
NfInstModel.objects.filter(nfinstid=self.nf_inst_id).update(status=VNF_STATUS.FAILED, lastuptime=now_time())
JobUtil.add_job_status(self.job_id, 255, error_msg)
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