add access_token to useProxy check

[djeeg]

[ian-r-rose]

Thanks @djeeg, is there an issue you are trying to fix here? This request (just checking for the proxy) shouldn't need authenticated access.

[djeeg]

oh right, the details seems to have gone missing.

quick summary of the setup:

• jupyter hub on kube
• connecting to gh enterprise instance
• using user personal token
• each user stores accessToken in extension config

if i burn this config into the notebook config py:

• allow_client_side_access_token = True
• api_url = internal github api
• token = "ReplaceMe" https://github.com/jupyterlab/jupyterlab-github/blob/master/jupyterlab_github/init.py#L23-L39

and set extension config per user to be:

• accessToken = user's personal access token

on call to _apiRequest

• first a test on _useProxy is executed
• _useProxy without an access_token throws an error
• because server side there is no token to query the GH enterprise API
• which means the requestUrl gets set to DEFAULT_GITHUB_API_URL https://github.com/jupyterlab/jupyterlab-github/blob/master/src/contents.ts#L547

an alternative way to solve this, could be to have a separate service-side route just for the proxy test, that was a no-op and just returned "ok" or something