I've been trying to push my Flask_socketio app to Heroku, but Heroku can't find my app by Procfile, probably because of my package structure. How can I restructure my directory? Or, Should I change my Procfile. Thanks in advance.
My directory structure:
|App
| |-templates
| |-main
| |-__init__.py
|app.py
|requirements.txt
|Procfile
App.py:
from app import create_app, socketio
app = create_app(debug=True)
if __name__ == "__main__":
socketio.run(app)
app/init.py:
from flask import Flask
from flask_socketio import SocketIO
socketio = SocketIO()
def create_app(debug=False):
"Create an application."
app = Flask(__name__)
app.debug = debug
app.config['SECRET_KEY'] = 'MRHBLR'
from .main import main
app.register_blueprint(main)
socketio.init_app(app)
return app
Procfile:
web: gunicorn --worker-class eventlet -w 1 app:app
Heroku app's log:
2021-04-03T19:34:00.216344+00:00 app[web.1]: Failed to find attribute 'app' in 'app'.
2021-04-03T19:34:00.217370+00:00 app[web.1]: [2021-04-03 19:34:00 +0000] [10] [INFO] Worker exiting (pid: 10)
2021-04-03T19:34:00.248331+00:00 app[web.1]: [2021-04-03 19:34:00 +0000] [4] [WARNING] Worker with pid 10 was terminated due to signal 15
2021-04-03T19:34:00.345570+00:00 app[web.1]: [2021-04-03 19:34:00 +0000] [4] [INFO] Shutting down: Master
2021-04-03T19:34:00.345660+00:00 app[web.1]: [2021-04-03 19:34:00 +0000] [4] [INFO] Reason: App failed to load.
You seem to have two things called app in your top-level, right? You have the app.py file and the app package. That is not going to work, try renaming one of them. For example, change app.py to myapp.py, then pass myapp:app in the Gunicorn command line.