Hi all

I am building a small web service that is essentially a nice looking wrapper around an external API. It reads user details from that external API, if user details list orders, then more API calls to read those orders details and present it all together in a nice looking web page.

API is oauth-authenticated and I work with it via server flow.. not sure if it’s correct name. Basically it’s my server that gets an auth token and fetches data, user doesn’t need to approve anything.

I use Tesla to access this third party API and it works very well except for when auth token expires. Then API returns 401, I need to refresh token (yet another http request) and then retry what I was doing.

It’s not a rocket science to handle it, yet still somewhat inconvenient to bake this readiness to 401+retry everywhere.

In JavaScript axios library similar situations are handled with “interceptors”. Interceptors can catch 401, “put original request on pause”, go execute another request for refreshing token, resume (or actually retry) original request wi th the renewed token.

• Can something like this be done with Tesla as well?
• Or what would be the proper elixir way to renew tokens on demand?