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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
import uuid
from threading import Thread
from lcm.pub.database.models import NfInstModel
from lcm.pub.database.models import VmInstModel
from lcm.pub.database.models import VNFCInstModel
from lcm.pub.exceptions import NFLCMException
from lcm.pub.exceptions import NFLCMExceptionConflict
from lcm.pub.utils.jobutil import JobUtil
from lcm.pub.utils.notificationsutil import NotificationsUtil
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
from lcm.nf.const import OPERATION_STATE_TYPE, LCM_NOTIFICATION_STATUS
from lcm.nf.const import CHANGE_TYPE, OPERATION_TYPE, HEAL_ACTION_TYPE
from lcm.nf.const import OPERATION_TASK
from lcm.nf.const import SUB_OPERATION_TASK
from lcm.nf.biz import common
from .operate_vnf_lcm_op_occ import VnfLcmOpOcc
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
self.lcm_op_occ = VnfLcmOpOcc(
vnf_inst_id=nf_inst_id,
lcm_op_id=job_id,
operation=OPERATION_TYPE.HEAL,
task=OPERATION_TASK.HEAL
)
self.pre_deal()
def run(self):
try:
self.heal_pre()
self.lcm_op_occ.notify_lcm(OPERATION_STATE_TYPE.STARTING)
self.apply_grant()
self.lcm_op_occ.upd(
sub_operation=SUB_OPERATION_TASK.GRANTED,
operation_state=OPERATION_STATE_TYPE.PROCESSING
)
self.lcm_op_occ.notify_lcm(OPERATION_STATE_TYPE.PROCESSING)
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(
LCM_NOTIFICATION_STATUS.RESULT,
OPERATION_STATE_TYPE.COMPLETED
)
self.lcm_op_occ.upd(
sub_operation=SUB_OPERATION_TASK.SUCCESS,
operation_state=OPERATION_STATE_TYPE.COMPLETED
)
except NFLCMException as e:
logger.error(e.args[0])
self.vnf_heal_failed_handle(e.args[0])
except Exception as e:
logger.error(e.args[0])
logger.error(traceback.format_exc())
self.vnf_heal_failed_handle(e.args[0])
def pre_deal(self):
logger.debug("Start pre deal for VNF heal_vnf task")
vnf_is_in_processing, vnf_op = self.lcm_op_occ.is_in_processing()
if vnf_is_in_processing:
raise NFLCMExceptionConflict('VNF(%s) %s in processing.' % (
self.nf_inst_id, vnf_op
))
self.lcm_op_occ.add()
def heal_pre(self):
if self.action not in (HEAL_ACTION_TYPE.START, HEAL_ACTION_TYPE.RESTART):
raise NFLCMException("Action 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, resourceid=self.vm_id)
if not self.vdu:
raise NFLCMException("VNF Vm(%s) does not exist." % self.vm_id)
self.vimid = self.vdu[0].vimid
self.tenant = self.vdu[0].tenant
logger.debug("Get heal vnf vm(%s,%s) info successfully.", self.vm_id, self.vm_name)
JobUtil.add_job_status(self.job_id, 20, 'Nf Healing get vnf vm info finish')
return
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 Vdu(%s) does not exist." % self.vdu_id)
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)
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 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()
)
self.lcm_op_occ.notify_lcm(OPERATION_STATE_TYPE.FAILED, error_msg)
JobUtil.add_job_status(self.job_id, 255, error_msg)
self.lcm_op_occ.upd(
sub_operation=SUB_OPERATION_TASK.ERROR,
operation_state=OPERATION_STATE_TYPE.FAILED,
error={
"status": 500,
"detail": error_msg
}
)
def lcm_notify(self, status, opState, err=None):
notification_content = self.prepareNotificationData(status, opState, err)
logger.info('Notify data = %s' % notification_content)
NotificationsUtil().send_notification(notification_content)
logger.info('Notify end')
def prepareNotificationData(self, status, opState, err=None):
affected_vnfcs = []
if status == LCM_NOTIFICATION_STATUS.RESULT and opState == OPERATION_STATE_TYPE.COMPLETED:
chtype = ""
if self.action == HEAL_ACTION_TYPE.START:
chtype = CHANGE_TYPE.ADDED
else:
chtype = CHANGE_TYPE.MODIFIED
vnfcs = VNFCInstModel.objects.filter(instid=self.nf_inst_id, vmid=self.vm_id)
vm_resource = {}
vm = VmInstModel.objects.filter(instid=self.nf_inst_id, resourceid=self.vm_id)
if vm:
vm_resource = {
'vimConnectionId': vm[0].vimid,
'resourceId': vm[0].resourceid,
'vimLevelResourceType': 'vm'
}
if vnfcs:
affected_vnfcs.append({
'id': vnfcs[0].vnfcinstanceid,
'vduId': vnfcs[0].vduid,
'changeType': chtype,
'computeResource': vm_resource
})
notification_content = {
"id": str(uuid.uuid4()),
"notificationType": "VnfLcmOperationOccurrenceNotification",
"subscriptionId": "",
"timeStamp": now_time(),
"notificationStatus": status,
"operationState": opState,
"vnfInstanceId": self.nf_inst_id,
"operation": OPERATION_TYPE.HEAL,
"isAutomaticInvocation": "false",
"vnfLcmOpOccId": self.job_id,
"affectedVnfcs": affected_vnfcs,
"affectedVirtualLinks": [],
"affectedVirtualStorages": [],
"changedInfo": {},
"changedExtConnectivity": [],
"_links": {"vnfInstance": {"href": ""},
"subscription": {"href": ""},
"vnfLcmOpOcc": {"href": ""}}
}
if opState in (OPERATION_STATE_TYPE.FAILED, OPERATION_STATE_TYPE.FAILED_TEMP):
notification_content["error"] = {"status": 500, "detail": err}
notification_content["_links"]["vnfInstance"]["href"] = "/vnf_instances/%s" % self.nf_inst_id
notification_content["_links"]["vnfLcmOpOcc"]["href"] = "/vnf_lc_ops/%s" % self.job_id
return notification_content
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