77 lines
2.6 KiB
Python
77 lines
2.6 KiB
Python
# Copyright 2017 AT&T Intellectual Property. All other 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.
|
|
|
|
from functools import wraps
|
|
import logging
|
|
import time
|
|
|
|
from airflow.exceptions import AirflowException
|
|
|
|
from service_session import ucp_keystone_session
|
|
|
|
|
|
def shipyard_service_token(func):
|
|
@wraps(func)
|
|
def keystone_token_get(self, context):
|
|
"""This function retrieves Keystone token for UCP Services
|
|
|
|
:param context: Information on the current workflow
|
|
|
|
Example::
|
|
|
|
from service_token import shipyard_service_token
|
|
|
|
@shipyard_service_token
|
|
def on_get(self, context):
|
|
svc_token=context['svc_token']
|
|
|
|
# Use the token to perform tasks such as setting
|
|
# up a DrydockSession which requires keystone
|
|
# token for authentication
|
|
"""
|
|
# Initialize variables
|
|
retry = 0
|
|
token = None
|
|
|
|
# Retrieve Keystone Session
|
|
sess = ucp_keystone_session(self, context)
|
|
|
|
# We will allow 1 retry in getting the Keystone Token with a
|
|
# backoff interval of 10 seconds in case there is a temporary
|
|
# glitch in the network or transient problems with the keystone-api
|
|
# pod
|
|
while retry <= 1:
|
|
# Retrieve Keystone Token
|
|
logging.info("Get Keystone Token")
|
|
token = sess.get_auth_headers().get('X-Auth-Token')
|
|
|
|
# Retry if we fail to get the keystone token
|
|
if token:
|
|
logging.info("Successfully Retrieved Keystone Token")
|
|
context['svc_token'] = token
|
|
break
|
|
else:
|
|
logging.info("Unable to get Keystone Token on first attempt")
|
|
logging.info("Retrying after 10 seconds...")
|
|
time.sleep(10)
|
|
retry += 1
|
|
|
|
# Raise Execptions if we fail to get a proper response
|
|
if not token:
|
|
raise AirflowException("Unable to get Keystone Token!")
|
|
else:
|
|
return func(self, context)
|
|
|
|
return keystone_token_get
|