Proper IDP 3 login handler syntax

[Cantor, Scott]

> We're finalizing our migration from IDP 2 to 3 and are having issues figuring
> out the proper conversion for having multiple login handlers.

There isn't one in the way you mean, V3 does not at present formally support multiple copies of the RemoteUser handler. I don't recall if anybody has requested it either but I think somebody may have. I was unaware V2 had support for that and it was not included in the requirements.

It is probably possible to simulate it with the External login flow, and doing your own RemoteUser integration at different locations through some coding. Or you could have your standard case deployed as RemoteUser, and then enable the External flow with your own REMOTE_USER handling as the "special case", assuming that you only need 1 special case.

It's also possible but not simple, documented, or fully supported, to manually copy existing flows like RemoteUser into additional copies of the flow with different Spring configurations.

It might help to explain why you need this, since there may be other ways of accomplishing the goal.

-- Scott