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# Copyright 2017 ZTE Corporation.
#
# 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 threading
import traceback
from lcm.pub.database.models import NfInstModel
from lcm.pub.exceptions import NSLCMException
from lcm.pub.msapi.vnfmdriver import send_nf_scaling_request
from lcm.pub.utils.jobutil import JobUtil, JOB_TYPE, JOB_MODEL_STATUS
from lcm.pub.utils.values import ignore_case_get
from lcm.ns_vnfs.const import JOB_ERROR
from lcm.ns_vnfs.enum import VNF_STATUS
from lcm.ns_vnfs.biz.wait_job import wait_job_finish
logger = logging.getLogger(__name__)
class NFManualScaleService(threading.Thread):
def __init__(self, vnf_instance_id, data):
super(NFManualScaleService, self).__init__()
self.vnf_instance_id = vnf_instance_id
self.data = data
self.job_id = JobUtil.create_job(
"NF", JOB_TYPE.MANUAL_SCALE_VNF, vnf_instance_id)
self.nf_scale_params = []
self.m_nf_inst_id = ''
self.vnfm_inst_id = ''
def run(self):
try:
self.do_biz()
except NSLCMException as e:
JobUtil.add_job_status(self.job_id, JOB_ERROR, e.message)
except Exception as ex:
logger.error(ex.message)
logger.error(traceback.format_exc())
JobUtil.add_job_status(self.job_id, JOB_ERROR, 'VNF scale failed')
finally:
self.update_nf_status()
def do_biz(self):
self.update_job(1, desc='VNF scale start')
self.update_nf_status(VNF_STATUS.SCALING)
self.get_and_check_params()
self.send_nf_scaling_requests()
self.update_nf_status(VNF_STATUS.ACTIVE)
self.update_job(100, desc='VNF scale success')
def get_and_check_params(self):
nf_info = NfInstModel.objects.filter(nfinstid=self.vnf_instance_id)
if not nf_info:
raise NSLCMException(
'NF instance[id=%s] does not exist' %
self.vnf_instance_id)
logger.debug('vnfd_model = %s, vnf_instance_id = %s' %
(nf_info[0].vnfd_model, self.vnf_instance_id))
nf_model = nf_info[0].vnfd_model
self.m_nf_inst_id = nf_info[0].mnfinstid
self.vnfm_inst_id = nf_info[0].vnfm_inst_id
scale_vnf_data = ignore_case_get(self.data, 'scaleVnfData')
if not scale_vnf_data:
raise NSLCMException('scaleVnfData parameter does not exist')
self.nf_scale_params.append({
'type': ignore_case_get(scale_vnf_data, 'type'),
'aspectId': ignore_case_get(scale_vnf_data, 'aspectId'),
'numberOfSteps': ignore_case_get(scale_vnf_data, 'numberOfSteps'),
'additionalParam': {'vnfdModel': nf_model}
})
def send_nf_scaling_requests(self):
nf_scale_num = len(self.nf_scale_params)
for i in range(nf_scale_num):
progress_range = [10 + 80 / nf_scale_num * i,
10 + 80 / nf_scale_num * (i + 1)]
self.send_nf_scaling_request(
self.nf_scale_params[i], progress_range)
def send_nf_scaling_request(self, scale_param, progress_range):
req_param = json.JSONEncoder().encode(scale_param)
rsp = send_nf_scaling_request(
self.vnfm_inst_id, self.m_nf_inst_id, req_param)
vnfm_job_id = ignore_case_get(rsp, 'jobId')
ret = wait_job_finish(
self.vnfm_inst_id,
self.job_id,
vnfm_job_id,
progress_range=progress_range,
timeout=1200,
mode='1')
if ret != JOB_MODEL_STATUS.FINISHED:
raise NSLCMException("VNF scale failed")
def update_nf_status(self, status=VNF_STATUS.ACTIVE):
NfInstModel.objects.filter(
nfinstid=self.vnf_instance_id).update(
status=status)
def update_job(self, progress, desc=''):
JobUtil.add_job_status(self.job_id, progress, desc)
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