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#!/usr/bin/env python
# Copyright 2017 Google 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.
"""Command-line application to run a query using user credentials.
You must supply a client secrets file, which would normally be bundled with
your application.
"""
import argparse
def main(project: str) -> None:
# [START bigquery_auth_user_flow]
from google_auth_oauthlib import flow
# A local server is used as the callback URL in the auth flow.
appflow = flow.InstalledAppFlow.from_client_secrets_file(
"client_secrets.json", scopes=["https://www.googleapis.com/auth/bigquery"]
)
# This launches a local server to be used as the callback URL in the desktop
# app auth flow. If you are accessing the application remotely, such as over
# SSH or a remote Jupyter notebook, this flow will not work. Use the
# `gcloud auth application-default login --no-browser` command or workload
# identity federation to get authentication tokens, instead.
#
appflow.run_local_server()
credentials = appflow.credentials
# [END bigquery_auth_user_flow]
# [START bigquery_auth_user_query]
from google.cloud import bigquery
# TODO: Uncomment the line below to set the `project` variable.
# project = 'user-project-id'
#
# The `project` variable defines the project to be billed for query
# processing. The user must have the bigquery.jobs.create permission on
# this project to run a query. See:
# https://cloud.google.com/bigquery/docs/access-control#permissions
client = bigquery.Client(project=project, credentials=credentials)
query_string = """SELECT name, SUM(number) as total
FROM `bigquery-public-data.usa_names.usa_1910_current`
WHERE name = 'William'
GROUP BY name;
"""
results = client.query_and_wait(query_string)
# Print the results.
for row in results: # Wait for the job to complete.
print("{}: {}".format(row["name"], row["total"]))
# [END bigquery_auth_user_query]
if __name__ == "__main__":
parser = argparse.ArgumentParser(
description=__doc__, formatter_class=argparse.RawDescriptionHelpFormatter
)
parser.add_argument("project", help="Project to use for BigQuery billing.")
args = parser.parse_args()
main(args.project)
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