Feature request: dynamic username support for credential rotation

[izeau]

Greetings!

I have noticed that the password option can be set to a function, allowing for a seamless way to reconnect when credentials are rotated. In my current workflow, we also rotate usernames. For example, we use user_1 and user_2, but only one of them is allowed to log in at a given time (let's say it's user_1).

When we need to rotate credentials, we generate a random password for user_2 and enable it for login. We then update the secrets with username = user_2 and the new password, notifying applications of the credential change. After a brief grace period, user_1 is disabled until the next rotation.

My issue is that while the password can be dynamically set, the username cannot. Is there a workaround for this, or could support for a dynamic username option be implemented? This feature would greatly enhance the flexibility and security of our credential management process.

Thank you for considering this request.

[porsager]

Yeah, that's a good idea :) feel free to do a pr mimicking the password behavior ;)