Reroute incoming http request if rerouting target path exists

[HerrDerb]

I am looking into a mechanism that, dependend on request information and the existence of certain endpoints, reroutes an incoming request.
For this I would need to check in a prematching ContainerRequestFilter if the endpoint to which I would like to reroute actually is defined.

How can I check if a given path and HTTP method is defined as an endpoint in Quarkus within a prematching ContainerRequestFilter for rerouting purposes?
Or as alternative, how can I reroute in a postmatching filter?

Maybe @FroMage or @stuartwdouglas might just know the answer?