wip:feat: adds Globus GCS-sourced assets as a datasource

[jbottigliero]

This pull request adds integration with Globus. Specifically, adding the ability to source data via HTTPS on a Globus Connect Server instance, authenticated using Globus Auth.

• The credential_provider was created based off of the #src/util/google_oauth2.ts implementation and other OAuth-like credential providers (e.g. middleauth and ngauth).

The Globus credential provider uses PKCE for the authorization flow, which I've added a few basic utilities around ¹.

Footnotes

1. These utilities could be replaced with an external library (e.g. pkce-challenge) if that is preferred. ↩

[joshmoore]

@jbottigliero: this sounds really interesting. Do you see coming back to it, or too much hassle?

(Edit: or did you just want another PR number? 😉)

[jbottigliero]

Hey @joshmoore, the initial PR was a bit premature, but in a much better spot now.

It looks like I am unable to re-open this branch, so I've created a new one with the latest code: #675

(...which gives us a new number too! 😂)