[logback-user] Log by transaction, rather than logger/class

I am working on a multi-threaded web app and I use Logback for debugging purposes during development. Most of what happens in my app is event driven, and there is a clear start and end point of the processing of each event. All of the processing that takes place on a given thread between the start and end point are all part of the same event/transaction. So what I would find helpful is if there was a way to configure Logback so that logging was different inside a transaction (even if it just turned on all logging) and that the rules were based on the transaction name rather than on the debugger. Would something like this be reasonably possible? Just curious, Donald