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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 uuid
import requests
from requests.auth import HTTPBasicAuth
from rest_framework import status
from lcm.nf import const
from lcm.pub.database.models import SubscriptionModel
from lcm.pub.database.models import (
VmInstModel, NetworkInstModel,
PortInstModel, StorageInstModel, VNFCInstModel
)
from lcm.pub.utils.timeutil import now_time
from lcm.pub.utils.enumutil import enum
logger = logging.getLogger(__name__)
NOTIFY_TYPE = enum(lCM_OP_OCC="VnfLcmOperationOccurrenceNotification",
CREATION="VnfIdentifierCreationNotification",
DELETION="VnfIdentifierDeletionNotification")
class NotificationsUtil(object):
def __init__(self):
pass
def send_notification(self, notification):
logger.info("Send Notifications to the callbackUri")
filters = {
"operationState": "operation_states",
"operation": "operation_types"
}
subscriptions_filter = {v + "__contains": notification[k] for k, v in list(filters.items())}
subscriptions = SubscriptionModel.objects.filter(**subscriptions_filter)
if not subscriptions.exists():
logger.info("No subscriptions created for the filters %s" % notification)
return
logger.info("Start sending notifications")
for subscription in subscriptions:
# set subscription id
notification["subscriptionId"] = subscription.subscription_id
notification['_links']['subscription'] = {
'href': '/api/vnflcm/v1/subscriptions/%s' % subscription.subscription_id
}
callbackUri = subscription.callback_uri
auth_info = json.loads(subscription.auth_info)
if auth_info["authType"] != const.OAUTH2_CLIENT_CREDENTIALS:
try:
self.post_notification(callbackUri, auth_info, notification)
except Exception as e:
logger.error("Failed to post notification: %s", e.message)
def post_notification(self, callbackUri, auth_info, notification):
params = auth_info.get("paramsBasic", {})
username = params.get("userName")
password = params.get("password")
logger.info("Sending notification to %s", callbackUri)
resp = requests.post(callbackUri,
data=notification,
auth=HTTPBasicAuth(username, password))
if resp.status_code != status.HTTP_204_NO_CONTENT:
raise Exception("Notify %s failed: %s" % (callbackUri, resp.text))
def set_affected_vnfcs(affected_vnfcs, nfinstid, changetype):
vnfcs = VNFCInstModel.objects.filter(instid=nfinstid)
for vnfc in vnfcs:
vm_resource = {}
if vnfc.vmid:
vm = VmInstModel.objects.filter(vmid=vnfc.vmid)
if vm:
vm_resource = {
'vimConnectionId': vm[0].vimid,
'resourceId': vm[0].resourceid,
'resourceProviderId': vm[0].vmname, # TODO: is resourceName mapped to resourceProviderId?
'vimLevelResourceType': 'vm'
}
affected_vnfcs.append({
'id': vnfc.vnfcinstanceid,
'vduId': vnfc.vduid,
'changeType': changetype,
'computeResource': vm_resource
})
logger.debug("affected_vnfcs=%s", affected_vnfcs)
return affected_vnfcs
def set_affected_vls(affected_vls, nfinstid, changetype):
networks = NetworkInstModel.objects.filter(instid=nfinstid)
for network in networks:
network_resource = {
'vimConnectionId': network.vimid,
'resourceId': network.resourceid,
'resourceProviderId': network.name, # TODO: is resourceName mapped to resourceProviderId?
'vimLevelResourceType': 'network'
}
affected_vls.append({
'id': network.networkid,
'virtualLinkDescId': network.nodeId,
'changeType': changetype,
'networkResource': network_resource
})
logger.debug("affected_vls=%s", affected_vls)
def set_ext_connectivity(ext_connectivity, nfinstid):
ext_connectivity_map = {}
ports = PortInstModel.objects.filter(instid=nfinstid)
for port in ports:
if port.networkid not in ext_connectivity_map:
ext_connectivity_map[port.networkid] = []
ext_connectivity_map[port.networkid].append({
'id': port.portid, # TODO: port.portid or port.nodeid?
'resourceHandle': {
'vimConnectionId': port.vimid,
'resourceId': port.resourceid,
'resourceProviderId': port.name, # TODO: is resourceName mapped to resourceProviderId?
'vimLevelResourceType': 'port'
},
'cpInstanceId': port.portid # TODO: port.cpinstanceid is not initiated when create port resource.
})
for network_id, ext_link_ports in list(ext_connectivity_map.items()):
networks = NetworkInstModel.objects.filter(networkid=network_id)
net_name = networks[0].name if networks else network_id
network_resource = {
'vimConnectionId': ext_link_ports[0]['resourceHandle']['vimConnectionId'],
'resourceId': network_id,
'resourceProviderId': net_name, # TODO: is resourceName mapped to resourceProviderId?
'vimLevelResourceType': 'network'
}
ext_connectivity.append({
'id': network_id,
'resourceHandle': network_resource,
'extLinkPorts': ext_link_ports
})
logger.debug("ext_connectivity=%s", ext_connectivity)
def set_affected_vss(affected_vss, nfinstid, changetype):
vss = StorageInstModel.objects.filter(instid=nfinstid)
for vs in vss:
affected_vss.append({
'id': vs.storageid,
'virtualStorageDescId': vs.nodeId,
'changeType': changetype,
'storageResource': {
'vimConnectionId': vs.vimid,
'resourceId': vs.resourceid,
'resourceProviderId': vs.name, # TODO: is resourceName mapped to resourceProviderId?
'vimLevelResourceType': 'volume'
}
})
logger.debug("affected_vss=%s", affected_vss)
def get_notification_status(operation_state):
if operation_state == const.OPERATION_STATE_TYPE.STARTING:
return const.LCM_NOTIFICATION_STATUS.START
return const.LCM_NOTIFICATION_STATUS.RESULT
def prepare_notification(nfinstid, jobid, operation, operation_state):
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': NOTIFY_TYPE.lCM_OP_OCC,
# set 'subscriptionId' after filtering for subscribers
'timeStamp': now_time(),
'notificationStatus': get_notification_status(operation_state),
'operationState': operation_state,
'vnfInstanceId': nfinstid,
'operation': operation,
'isAutomaticInvocation': False,
'vnfLcmOpOccId': jobid,
'affectedVnfcs': [],
'affectedVirtualLinks': [],
'affectedVirtualStorages': [],
'changedExtConnectivity': [],
'error': '',
'_links': {
'vnfInstance': {
'href': '%s/vnf_instances/%s' % (const.URL_PREFIX, nfinstid)
},
'vnfLcmOpOcc': {
'href': '%s/vnf_lcm_op_occs/%s' % (const.URL_PREFIX, jobid)
}
}
}
return notification_content
def prepare_notification_data(nfinstid, jobid, changetype, operation):
data = prepare_notification(nfinstid=nfinstid,
jobid=jobid,
operation=operation,
operation_state=const.OPERATION_STATE_TYPE.COMPLETED)
set_affected_vnfcs(data['affectedVnfcs'], nfinstid, changetype)
set_affected_vls(data['affectedVirtualLinks'], nfinstid, changetype)
set_affected_vss(data['affectedVirtualStorages'], nfinstid, changetype)
set_ext_connectivity(data['changedExtConnectivity'], nfinstid)
logger.debug('Notification content: %s' % data)
return data
def prepare_vnf_identifier_notification(notify_type, nfinstid):
data = {
"id": str(uuid.uuid4()), # shall be the same if sent multiple times due to multiple subscriptions.
"notificationType": notify_type,
"timeStamp": now_time(),
"vnfInstanceId": nfinstid,
"_links": {
"vnfInstance": {
'href': '%s/vnf_instances/%s' % (const.URL_PREFIX, nfinstid)
}
}
}
logger.debug('Vnf Identifier Notification: %s' % data)
return data
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