Support for Server Mode in R

[thealanjason]

Firstly, thank you for this awesome project.

I tried using the umbridge R library from here, and noticed that it currently only supports the client mode. The functions for the server mode are not implemented.

We would like to use a model based on the RobustGaSP library in R.

The easy way out, would be to create a python wrapper, and use the server mode from python. However, it would be great to have native support for the server mode in R. This would also make the R library of umbridge feature complete.

[thealanjason]

With a little bit of support and if pointed in the right direction, I could also work on the implementation of the missing functions for the server mode in R :)

IIUC, the implementation needs to be done in this file:
https://github.com/UM-Bridge/umbridge/blob/main/R/R/umbridge.R

[linusseelinger]

Thanks for reaching out @thealanjason !

Indeed, an R server would be awesome! I can't commit the time to do the heavy lifting, but would be happy to support if you'd like to build that.

umbridge.R is definitely the right place to put an R server. The endpoints that a server should provide are documented at https://um-bridge-benchmarks.readthedocs.io/en/docs/umbridge/lib.html . The main reason I didn't add an R server when developing the R client was that I didn't find a straightforward solution for HTTP servers in R. However, I didn't look deep and I'm not an R expert, so there might be some options!

We also have a Slack workspace (linked on docs main page), which is a good channel for getting in touch with other contributors and users.