78 lines
2.8 KiB
Python
78 lines
2.8 KiB
Python
# Copyright 2017 AT&T Intellectual Property. All other rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import configparser
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import logging
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import time
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from airflow.exceptions import AirflowException
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from functools import wraps
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from keystoneauth1.identity import v3 as keystone_v3
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from keystoneauth1 import session as keystone_session
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from keystoneclient.v3 import client as keystone_client
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def shipyard_service_token(func):
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@wraps(func)
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def keystone_token_get(self, context):
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# Read and parse shiyard.conf
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config = configparser.ConfigParser()
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config.read(self.shipyard_conf)
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# Initialize variables
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retry = 0
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token = None
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keystone_auth = {}
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# We will allow 1 retry in getting the Keystone Token with a
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# backoff interval of 10 seconds in case there is a temporary
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# glitch in the network or transient problems with the keystone-api
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# pod
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while retry <= 1:
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# Construct Session Argument
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for attr in ('auth_url', 'password', 'project_domain_name',
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'project_name', 'username', 'user_domain_name'):
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keystone_auth[attr] = config.get('keystone_authtoken', attr)
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# Set up keystone session
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auth = keystone_v3.Password(**keystone_auth)
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sess = keystone_session.Session(auth=auth)
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keystone = keystone_client.Client(session=sess)
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# Retrieve Keystone Token
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logging.info("Get Keystone Token")
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token = keystone.get_raw_token_from_identity_service(
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**keystone_auth)['auth_token']
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# Retry if we fail to get the keystone token
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if token:
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logging.info("Successfully Retrieved Keystone Token")
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context['svc_token'] = token
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break
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else:
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logging.info("Unable to get Keystone Token on first attempt")
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logging.info("Retrying after 10 seconds...")
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time.sleep(10)
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retry += 1
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# Raise Execptions if we fail to get a proper response
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if not token:
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raise AirflowException("Unable to get Keystone Token!")
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else:
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return func(self, context)
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return keystone_token_get
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