In Spring, what is the idiomatic way to integrate an existing legacy service (that must run in its own thread)?
For slight clarification, this is a service that receives messages via UDP from an embedded device, transforms them into POJOs and pushes them into a (local, in-memory) queue. Ideally, I'd like to encapsulate this as a Spring component and have some declarative way of indicating "this component provides messages of this type" and allowing registration of other components as listeners (1:1 would be enough) without reinventing any wheels.
(Answering my own question) Using ApplicationEvent wiring seems to be sufficiently declarative for my purposes, so I'm just going with that.