67 lines
2.0 KiB
Python
67 lines
2.0 KiB
Python
# Copyright 2012 Google Inc.
|
|
# Copyright 2019 Red Hat, Inc.
|
|
#
|
|
# 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 requests
|
|
import threading
|
|
import time
|
|
|
|
TOKEN_URL = ('http://metadata.google.internal/computeMetadata/'
|
|
'v1/instance/service-accounts/default/token')
|
|
REFRESH = 25
|
|
RETRY_INTERVAL = 5
|
|
|
|
|
|
class GCloudAuth(requests.auth.AuthBase):
|
|
log = logging.getLogger('zuul.GerritConnection')
|
|
|
|
def __init__(self, user, password):
|
|
self.token = None
|
|
self.expires = 0
|
|
try:
|
|
self.getToken()
|
|
except Exception:
|
|
self.log.exception("Error updating token:")
|
|
self.update_thread = threading.Thread(target=self.update)
|
|
self.update_thread.daemon = True
|
|
self.update_thread.start()
|
|
|
|
def update(self):
|
|
while True:
|
|
try:
|
|
self._update()
|
|
except Exception:
|
|
self.log.exception("Error updating token:")
|
|
time.sleep(5)
|
|
|
|
def _update(self):
|
|
now = time.time()
|
|
expires = self.expires - REFRESH
|
|
expires = max(expires, now + RETRY_INTERVAL)
|
|
while now < expires:
|
|
time.sleep(expires - now)
|
|
now = time.time()
|
|
self.getToken()
|
|
|
|
def getToken(self):
|
|
r = requests.get(TOKEN_URL, headers={'Metadata-Flavor': 'Google'})
|
|
data = r.json()
|
|
self.token = data['access_token']
|
|
self.expires = time.time() + data['expires_in']
|
|
|
|
def __call__(self, request):
|
|
request.prepare_cookies({'o': self.token})
|
|
return request
|