Side project: Rewriting runner in Rust

[revolko]

Hey,

I am currently in my Rust phase, and I have decided to "rewrite" actions runner to Rust (with the twist that actions will be run in Docker container). However, I got stuck right at the beginning.

I have studied the current implementation and my understanding of runner registration is the following:

1. Get the runner token
2. Get the tenant token (based on the implementation, it is possible to get use_v2_flow but my requests have never got this set in responses).
3. Use runner token to make subsequent requests (either to list runners or to register custom runner).

I am struggling getting 3. step working. As I said, when getting the tenant token, I got a proper response, but never a flag with use_v2_flow set. I tried ignoring it and using v2_flow either way (as I could easily read what are the HTTP calls that needed to be executed), but that did not work. I either got 401 or 404 error (IMO both are caused by authentication issues).

I could not get anywhere using v2_flow so I decided to try and implement the VssConnection approach. Here I got stuck. I cannot figure out how to create VssConnection and honestly, I have no idea what it is. I have very little experience with .NET, but still tried to google something out, without success.

In the end, I have two questions:

1. Can I somehow force github API to allow me to use v2_flow?
2. If v2_flow is not possible, can anyone help me figuring out VssConnection?

P.S. My very simple implementation: https://github.com/revolko/github-docker-runner. I will be happy for any comments.