Authentication and Authorization not working through config file of jupyter Server

[ashu-soni-dsw]

I am running a Jupyter environment (Jupyter Lab) inside a Docker container on a remote server. Inside the container I want to restrict the OS level access from the jupyter lab such that the user must not be able to open or read any file from a specific directory of a folder.

• Progress till now:

• Approach: I have created a custom authorization class that inherits the jupyter_server.auth.Authorizer class and overrides it’s is_authorized method. The goal is that, the custom class must have a logic to restrict the access to a certain folder (for example: “D:\New folder (2)”), such that, every time a user tries to access that particular folder a HTTPError(403) error is raised, and the request must be blocked. The location of custom class is in the same directory as the jupyter_server_config.py config file i.e. “C:\Users\ashus.jupyter”.

• Inside config file:
  c.ServerApp.authorizer_class = ‘C:\Users\ashus.jupyter\CustomAuthorization.MyCustomAuthorizer’

• Error: When I run the Jupyter Lab using anaconda3 command prompt I am facing the following error:

Please comment and help me in solving this issue.

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[manics]

Note this was cross posted on Discourse https://discourse.jupyter.org/t/restricting-os-level-access-from-jupyter-lab/21251