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# Copyright 2019 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 logging
import uuid
import requests
from rest_framework import status
from catalog.packages import const
from catalog.pub.database.models import VnfPkgSubscriptionModel, NsdmSubscriptionModel
from catalog.pub.database.models import VnfPackageModel
import catalog.pub.utils.timeutil
from catalog.pub.utils.values import remove_none_key
from catalog.pub.config import config as pub_config
import traceback
from django.db.models import Q
logger = logging.getLogger(__name__)
class NotificationsUtil(object):
def __init__(self):
pass
def send_notification(self, notification, filters, isvnfpkg):
subscriptions_filter = {v + "__contains": notification[k] for k, v in filters.items()}
subscriptions_filter = remove_none_key(subscriptions_filter)
logger.debug('send_notification subscriptions_filter = %s' % subscriptions_filter)
q1 = Q()
q1.connector = 'OR'
for k, v in subscriptions_filter.items():
q1.children.append((k, v))
if isvnfpkg:
subscriptions = VnfPkgSubscriptionModel.objects.filter(q1)
subscription_root_uri = const.VNFPKG_SUBSCRIPTION_ROOT_URI
else:
subscriptions = NsdmSubscriptionModel.objects.filter(q1)
subscription_root_uri = const.NSDM_SUBSCRIPTION_ROOT_URI
if not subscriptions.exists():
logger.info("No subscriptions created for the filters %s" % notification)
return
logger.info("Start sending notifications")
for sub in subscriptions:
# set subscription id
if isvnfpkg:
notification["subscriptionId"] = sub.subscription_id
else:
notification["subscriptionId"] = sub.subscriptionid
notification['_links']['subscription'] = {
'href': 'http://%s:%s/%s%s' % (pub_config.MSB_SERVICE_IP,
pub_config.MSB_SERVICE_PORT,
subscription_root_uri,
notification["subscriptionId"])
}
callbackuri = sub.callback_uri
"""
auth_info = json.loads(sub.auth_info)
if auth_info["authType"] == const.OAUTH2_CLIENT_CREDENTIALS:
pass
"""
self.post_notification(callbackuri, notification)
def post_notification(self, callbackuri, notification):
"""
params = auth_info.get("paramsBasic", {})
username, password = params.get("userName"), params.get("password")
logger.info("Sending notification to %s, %s", callbackuri, params)
resp = None
if username:
resp = requests.post(callbackuri,
data=notification,
auth=HTTPBasicAuth(username, password))
else:
"""
try:
resp = requests.post(callbackuri, data=notification, headers={'Connection': 'close'})
if resp.status_code != status.HTTP_204_NO_CONTENT:
logger.error("Sending notification to %s failed: %s" % (callbackuri, resp.text))
else:
logger.info("Sending notification to %s successfully.", callbackuri)
except:
logger.error("Post notification failed.")
logger.error(traceback.format_exc())
def prepare_vnfpkg_notification(vnf_pkg_id, notification_type, pkg_change_type, operational_state):
logger.info('Start to prepare notification')
vnf_pkg = VnfPackageModel.objects.filter(vnfPackageId=vnf_pkg_id)
vnfd_id = None
if vnf_pkg:
vnfd_id = vnf_pkg[0].vnfdId
notification_content = {
'id': str(uuid.uuid4()), # shall be the same if sent multiple times due to multiple subscriptions.
'notificationType': notification_type,
# set 'subscriptionId' after filtering for subscribers
'timeStamp': catalog.pub.utils.timeutil.now_time(),
'vnfPkgId': vnf_pkg_id,
'vnfdId': vnfd_id,
'changeType': pkg_change_type,
'operationalState': operational_state,
'_links': {
'vnfPackage': {
'href': 'http://%s:%s/%s/vnf_packages/%s' % (pub_config.MSB_SERVICE_IP,
pub_config.MSB_SERVICE_PORT,
const.PKG_URL_PREFIX,
vnf_pkg_id)
}
}
}
return notification_content
def prepare_nsd_notification(nsd_info_id, nsd_id, notification_type, failure_details=None, operational_state=None):
logger.info('Start to prepare notification')
notification_content = {
'id': str(uuid.uuid4()), # shall be the same if sent multiple times due to multiple subscriptions.
'notificationType': notification_type,
# set 'subscriptionId' after filtering for subscribers
'timeStamp': catalog.pub.utils.timeutil.now_time(),
'nsdInfoId': nsd_info_id,
'nsdId': nsd_id,
'onboardingFailureDetails': failure_details,
'nsdOperationalState': operational_state,
'_links': {
'nsdInfo': {
'href': 'http://%s:%s/%s/ns_descriptors/%s' % (pub_config.MSB_SERVICE_IP,
pub_config.MSB_SERVICE_PORT,
const.NSD_URL_PREFIX,
nsd_info_id)
}
}
}
return notification_content
def prepare_pnfd_notification(pnfd_info_id, pnfd_id, notification_type, failure_details=None):
logger.info('Start to prepare notification')
notification_content = {
'id': str(uuid.uuid4()), # shall be the same if sent multiple times due to multiple subscriptions.
'notificationType': notification_type,
# set 'subscriptionId' after filtering for subscribers
'timeStamp': catalog.pub.utils.timeutil.now_time(),
'pnfdInfoIds': pnfd_info_id,
'pnfdId': pnfd_id,
'onboardingFailureDetails': failure_details,
'_links': {
'pnfdInfo': {
'href': 'http://%s:%s/%s/pnf_descriptors/%s' % (pub_config.MSB_SERVICE_IP,
pub_config.MSB_SERVICE_PORT,
const.NSD_URL_PREFIX,
pnfd_info_id)
}
}
}
return notification_content
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