Problem with deploying a custom dashboard using waitress about explainerdashboard

[oegedijk]

I see that you import the custom tabs from the custom_tabs module. However it seems that when you generated the dashboard.yaml these were actually declared in __main__.

So you can either manually change the modules to custom_tabs in the dashboard.yaml, or generate the yaml something like this

from explainerdashboard import ExplainerDashboard
from custom_tabs import *

explainer = ClassifierExplainer(...)
db = ExplainerDashboard(explainer, [CustomDescriptiveTab, CustomFeatImpTab, CustomWhatIfTab])
db.to_yaml("dashboard.yaml")

[hkoppen]

True, thanks! I did update the yaml-file, which is correctly reflecting the module now. However, I face another error when running waitress-serve --port=8060 "dashboard:create_c_app":

Serving on http://...
ERROR:waitress:Exception while serving /
Traceback (most recent call last):
  File "c:\...\venv\lib\site-packages\waitress\channel.py", line 350, in service
    task.service()
  File "c:\...\venv\lib\site-packages\waitress\task.py", line 171, in service
    self.execute()
  File "c:\...\venv\lib\site-packages\waitress\task.py", line 441, in execute
    app_iter = self.channel.server.application(environ, start_response)
TypeError: create_c_app() takes 0 positional arguments but 2 were given

where dashboard.py is

from explainerdashboard import ExplainerDashboard
from custom_tabs import *
from waitress import serve


def create_c_app():
    db = ExplainerDashboard.from_config("dashboard.yaml")
    app = db.flask_server()
    return app

if __name__ == "__main__":
    serve(create_c_app(), host='0.0.0.0', port=8050)

Note that running python dashboard.py is working fine (which was the case even before i fixed the yaml-file!)

[oegedijk]

I have never used waitress, but would this work:

from explainerdashboard import ExplainerDashboard
from custom_tabs import *
from waitress import serve


def create_c_app():
    db = ExplainerDashboard.from_config("dashboard.yaml")
    app = db.flask_server()
    return app

app = create_c_app()

if __name__ == "__main__":
    serve(app, host='0.0.0.0', port=8050)

And then from the command line:

waitress-serve --port=8080 dashboard:app

[hkoppen]

Yes, that's the way to go. Apparently I did follow other examples too blindly, thanks for your support!

For future reference: it suffices to use

from explainerdashboard import ExplainerDashboard

app = ExplainerDashboard.from_config("dashboard.yaml").flask_server()

and then run waitress-serve --port=8070 dashboard:app in command line (using a suitable port).
Which, tbh, is exactly what is written here: https://explainerdashboard.readthedocs.io/en/latest/deployment.html#storing-explainer-and-running-default-dashboard-with-gunicorn :D (btw, there is a typo: "ExpalinerDashboard")

[oegedijk]

Nice one-liner indeed :)

[oegedijk]

And thanks for pointing out waitress - seems like a cool library, will see if I can build it into explainerdashboard itself.