This module provides the base elements to create a service with Flask and run on Google Run, it also includes a client to publish messages to a pubsub topic.
The minimum code to run a service:
from flaskgcrun import FlaskGCRun
class Service(FlaskGCRun):
def handler(self, data):
return data
app = Service(__name__)
if __name__ == '__main__':
app.run(debug=True, host='0.0.0.0',
port=int(os.environ.get('PORT', 8080)))handler is the required method to process data.
FlaskGCRun class provides utilities:
- store
- logging
- pub/sub publisher
it's automatically handle decoding of messages and log excecution time.
The service will forward data returned by handler to downstream queues, if data is not None and if a list of downstream channels is provided either in the class constructor or with the DOWNSTREAM_CHANNELS environment variable.
Store utility provides 3 methods to upload or retireive files:
- upload_string
- upload_blob
- list_blobs
- to disable pubsub
- to return always OK
- use ENV for everything + default