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 tmp-generated

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main.py

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# Copyright 2020 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 run_events_pubsub_server_setup]

import base64

import os

from flask import Flask, request

required_fields = ['Ce-Id', 'Ce-Source', 'Ce-Type', 'Ce-Specversion']

app = Flask(__name__)

# [END run_events_pubsub_server_setup]

# [START run_events_pubsub_handler]

@app.route('/', methods=['POST'])

def index():

for field in required_fields:

if field not in request.headers:

errmsg = f'Bad Request: missing required header {field}'

print(errmsg)

return errmsg, 400

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()

ce_id = request.headers.get('Ce-Id')

resp = f'Hello, {name}! ID: {ce_id}'

print(resp)

return (resp, 200)

# [END run_events_pubsub_handler]

# [START run_events_pubsub_server]

if __name__ == "__main__":

app.run(debug=True, host='0.0.0.0', port=int(os.environ.get('PORT', 8080)))

# [END run_events_pubsub_server]