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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 ast
import json
import logging
from lcm.pub.database.models import SubscriptionModel
from lcm.pub.exceptions import NFLCMException
logger = logging.getLogger(__name__)
ROOT_FILTERS = {
'operationTypes': 'operation_types',
'operationStates': 'operation_states',
'notificationTypes': 'notification_types'
}
VNF_INSTANCE_FILTERS = {
"vnfInstanceId": "vnf_instance_filter"
}
class QuerySubscription:
def __init__(self, data, subscription_id=''):
self.subscription_id = subscription_id
self.params = data
def query_single_subscription(self):
subscription = SubscriptionModel.objects.filter(subscription_id=self.subscription_id)
if not subscription.exists():
raise NFLCMException('Subscription(%s) does not exist' % self.subscription_id)
return self.fill_resp_data(subscription)
def query_multi_subscriptions(self):
query_data = {}
logger.debug("QueryMultiSubscriptions--get--biz::> Check for filters in query params" % self.params)
for query, value in list(self.params.items()):
if query in ROOT_FILTERS:
query_data[ROOT_FILTERS[query] + '__icontains'] = value
for query, value in list(self.params.items()):
if query in VNF_INSTANCE_FILTERS:
query_data[VNF_INSTANCE_FILTERS[query] + '__icontains'] = value
# Query the database with filters if the request has fields in request params, else fetch all records
if query_data:
subscriptions = SubscriptionModel.objects.filter(**query_data)
else:
subscriptions = SubscriptionModel.objects.all()
if not subscriptions.exists():
raise NFLCMException('Subscriptions do not exist')
return [self.fill_resp_data(subscription) for subscription in subscriptions]
def fill_resp_data(self, subscription):
subscription_filter = {
"notificationTypes": ast.literal_eval(subscription.notification_types),
"operationTypes": ast.literal_eval(subscription.operation_types),
"operationStates": ast.literal_eval(subscription.operation_states),
"vnfInstanceSubscriptionFilter": json.loads(subscription.vnf_instance_filter)
}
resp_data = {
'id': subscription.subscription_id,
'callbackUri': subscription.callback_uri,
'filter': subscription_filter,
'_links': json.loads(subscription.links)
}
return resp_data
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