79 lines
2.7 KiB
Python
79 lines
2.7 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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from functools import wraps
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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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try:
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from service_session import ucp_keystone_session
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except ImportError:
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from shipyard_airflow.plugins.service_session import ucp_keystone_session
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def shipyard_service_token(func):
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@wraps(func)
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def keystone_token_get(self, *args):
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"""This function retrieves Keystone token for Airship Services
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:param context: Information on the current workflow
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Example::
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from service_token import shipyard_service_token
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@shipyard_service_token
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def on_get(self, svc_endpoint):
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logging.info("The token is %s", self.svc_token)
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# Use the token to perform tasks such as setting
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# up a DrydockSession which requires keystone
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# token for authentication
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"""
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# Initialize variables
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retry = 0
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# Retrieve Keystone Session
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self.svc_session = ucp_keystone_session(self.shipyard_conf)
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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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# Retrieve Keystone Token
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logging.info("Get Keystone Token")
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self.svc_token = self.svc_session.get_auth_headers().get(
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'X-Auth-Token')
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# Retry if we fail to get the keystone token
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if self.svc_token:
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logging.info("Successfully Retrieved Keystone 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 self.svc_token:
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raise AirflowException("Unable to get Keystone Token!")
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else:
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return func(self, *args)
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return keystone_token_get
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