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# Copyright 2018 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
from lcm.pub.database.models import SubscriptionModel
from lcm.pub.exceptions import NSLCMException
from lcm.pub.msapi.extsys import get_vnfm_by_id
from lcm.pub.utils.restcall import req_by_msb
from lcm.pub.utils.values import ignore_case_get
from lcm.pub.config import config as pub_config
logger = logging.getLogger(__name__)
class SubscriptionCreation(object):
def __init__(self, data):
self.data = data
self.vnf_instance_id = self.data['vnfInstanceId']
self.vnfm_id = self.data['vnfmId']
self.subscription_request_data = {}
self.subscription_response_data = {}
pass
def do_biz(self):
logger.debug('Start subscribing...')
self.prepare_lccn_subscription_request_data()
self.send_subscription_request()
self.save_subscription_response_data()
logger.debug('Subscribing has completed.')
def prepare_lccn_subscription_request_data(self):
vnfm_info = get_vnfm_by_id(self.vnfm_id)
call_back = "http://%s:%s/api/gvnfmdriver/v1/vnfs/lifecyclechangesnotification" % (pub_config.MSB_SERVICE_IP, pub_config.MSB_SERVICE_PORT)
self.subscription_request_data = {
"filter": {
"notificationTypes": ["VnfLcmOperationOccurrenceNotification"],
"operationTypes": [
"INSTANTIATE",
"SCALE",
"SCALE_TO_LEVEL",
"CHANGE_FLAVOUR",
"TERMINATE",
"HEAL",
"OPERATE",
"CHANGE_EXT_CONN",
"MODIFY_INFO"
],
"operationStates": [
"STARTING",
"PROCESSING",
"COMPLETED",
"FAILED_TEMP",
"FAILED",
"ROLLING_BACK",
"ROLLED_BACK"
],
"vnfInstanceSubscriptionFilter": {
# "vnfdIds": [],
"vnfInstanceIds": [self.vnf_instance_id],
# "vnfInstanceNames": [],
# "vnfProductsFromProviders": {}
}
},
"callbackUri": call_back, # TODO: need reconfirming
"authentication": {
"authType": ["BASIC"],
"paramsBasic": {
# "userName": vnfm_info['userName'],
# "password": vnfm_info['password']
}
}
}
if vnfm_info['userName']:
self.subscription_request_data["authentication"]["paramsBasic"]["userName"] = vnfm_info['userName']
if vnfm_info['password']:
self.subscription_request_data["authentication"]["paramsBasic"]["password"] = vnfm_info['password']
def send_subscription_request(self):
ret = req_by_msb('api/gvnfmdriver/v1/%s/subscriptions' % self.vnfm_id, 'POST', json.JSONEncoder().encode(self.subscription_request_data))
if ret[0] != 0:
logger.error("Status code is %s, detail is %s.", ret[2], ret[1])
raise NSLCMException("Failed to subscribe from vnfm(%s)." % self.vnfm_id)
self.subscription_response_data = json.JSONDecoder().decode(ret[1])
def save_subscription_response_data(self):
logger.debug("Save subscription[%s] to the database" % self.subscription_response_data['id'])
lccn_filter = self.subscription_response_data['filter']
SubscriptionModel.objects.create(
subscription_id=self.subscription_response_data['id'],
notification_types=json.dumps(lccn_filter['notificationTypes']),
operation_types=json.dumps(lccn_filter['operationTypes']),
operation_states=json.dumps(lccn_filter['operationStates']),
vnf_instance_filter=json.dumps(lccn_filter['vnfInstanceSubscriptionFilter']),
callback_uri=self.subscription_response_data['callbackUri'],
links=json.dumps(self.subscription_response_data['_links'])
)
logger.debug('Subscription[%s] has been created', self.subscription_response_data['id'])
class SubscriptionDeletion(object):
def __init__(self, vnfm_id, vnf_instance_id):
self.vnfm_id = vnfm_id
self.vnf_instance_id = vnf_instance_id
self.subscription_id = None
self.subscription = None
def do_biz(self):
self.filter_subscription()
self.send_subscription_deletion_request()
self.delete_subscription_in_db()
def filter_subscription(self):
subscritptions = SubscriptionModel.objects.filter(vnf_instance_filter__contains=self.vnf_instance_id)
if not subscritptions.exists():
logger.debug("Subscription contains VNF(%s) does not exist." % self.vnf_instance_id)
self.subscription = subscritptions.first()
def send_subscription_deletion_request(self):
if self.subscription:
self.subscription_id = ignore_case_get(self.subscription, 'id')
ret = req_by_msb('api/gvnfmdriver/v1/%s/subscriptions/%s' % (self.vnfm_id, self.subscription_id), 'DELETE')
if ret[0] != 0:
logger.error('Status code is %s, detail is %s.', ret[2], ret[1])
raise NSLCMException("Failed to subscribe from vnfm(%s)." % self.vnfm_id)
logger.debug('Subscripton(%s) in vnfm(%s) has been deleted.' % (self.subscription, self.vnfm_id))
def delete_subscription_in_db(self):
if self.subscription:
self.subscription.delete()
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