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main.py
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# Copyright 2019 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
#
# 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.
# [START cloudrun_pubsub_server_setup]
# [START run_pubsub_server_setup]
import base64
import os
from flask import Flask, request
app = Flask(__name__)
# [END run_pubsub_server_setup]
# [END cloudrun_pubsub_server_setup]
# [START cloudrun_pubsub_handler]
# [START run_pubsub_handler]
@app.route("/", methods=["POST"])
def index():
envelope = request.get_json()
if not envelope:
msg = "no Pub/Sub message received"
print(f"error: {msg}")
return f"Bad Request: {msg}", 400
if not isinstance(envelope, dict) or "message" not in envelope:
msg = "invalid Pub/Sub message format"
print(f"error: {msg}")
return f"Bad Request: {msg}", 400
pubsub_message = envelope["message"]
name = "World"
if isinstance(pubsub_message, dict) and "data" in pubsub_message:
name = base64.b64decode(pubsub_message["data"]).decode("utf-8").strip()
print(f"Hello {name}!")
return ("", 204)
# [END run_pubsub_handler]
# [END cloudrun_pubsub_handler]
if __name__ == "__main__":
PORT = int(os.getenv("PORT")) if os.getenv("PORT") else 8080
# This is used when running locally. Gunicorn is used to run the
# application on Cloud Run. See entrypoint in Dockerfile.
app.run(host="127.0.0.1", port=PORT, debug=True)