It seems that I should be able to get my preferred behavior by instead using (Thread. (bound-fn [] ,,,)), will test and report back

Oh, maybe json serialization is failing? These do seem to mostly be Exception-related messages that look like they're using the default appender

Check out alter-var-root too, it's the imperative approach (it sets a global context that is visible to the entire process) bound-fn should work with Thread. for typical log lines but weird stuff (that cannot be JSON serialized, like you said) might still bypass the appender, that's to be expected

Yeah, I think it's json serialization issues, I didn't have the exceptions in the position to automatically Throwable->map

FYI if you run Throwable->map you lose the ability to ex-data ExceptionInfos, which might not be what you want

This is just for the logging, the viesti json appender seems to handle it properly as long as the exceptions are the first arg to the logging macros (I was putting them under an unrelated key before)