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# Copyright 2018 Google LLC
#
# 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
#
# https://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.
"""Get the client ID associated with a Cloud Composer environment."""
import argparse
def get_client_id(project_id, location, composer_environment):
# [START composer_get_environment_client_id]
import google.auth
import google.auth.transport.requests
import requests
import six.moves.urllib.parse
# Authenticate with Google Cloud.
# See: https://cloud.google.com/docs/authentication/getting-started
credentials, _ = google.auth.default(
scopes=['https://www.googleapis.com/auth/cloud-platform'])
authed_session = google.auth.transport.requests.AuthorizedSession(
credentials)
# project_id = 'YOUR_PROJECT_ID'
# location = 'us-central1'
# composer_environment = 'YOUR_COMPOSER_ENVIRONMENT_NAME'
environment_url = (
'https://composer.googleapis.com/v1beta1/projects/{}/locations/{}'
'/environments/{}').format(project_id, location, composer_environment)
composer_response = authed_session.request('GET', environment_url)
environment_data = composer_response.json()
airflow_uri = environment_data['config']['airflowUri']
# The Composer environment response does not include the IAP client ID.
# Make a second, unauthenticated HTTP request to the web server to get the
# redirect URI.
redirect_response = requests.get(airflow_uri, allow_redirects=False)
redirect_location = redirect_response.headers['location']
# Extract the client_id query parameter from the redirect.
parsed = six.moves.urllib.parse.urlparse(redirect_location)
query_string = six.moves.urllib.parse.parse_qs(parsed.query)
print(query_string['client_id'][0])
# [END composer_get_environment_client_id]
if __name__ == '__main__':
parser = argparse.ArgumentParser(
description=__doc__,
formatter_class=argparse.RawDescriptionHelpFormatter)
parser.add_argument('project_id', help='Your Project ID.')
parser.add_argument(
'location', help='Region of the Cloud Composer environent.')
parser.add_argument(
'composer_environment', help='Name of the Cloud Composer environent.')
args = parser.parse_args()
get_client_id(
args.project_id, args.location, args.composer_environment)
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