Experience enabling metrics on SendOnly endpoints

[dvdstelt]

Issue

Currently, when you enable metrics on a SendOnly endpoint, an exception is thrown. The idea is that SendOnly endpoints can't produce metrics and we should inform users about this. That way they don't expect certain behavior of NServiceBus which seems not to be working.

The issue is that @Particular/metrics-maintainers aren't 100% sure if we should warn or throw an exception. This discussion is bigger than this repo as it also concerns Core and other downstream packages. An internal discussion was raised to discuss this and decide if we need consensus, guidance and perhaps documentation explaining the behavior.

Solution

await the internal discussion and decide if this could be withdrawn or we should execute on it.