http4s-reactive-streams module

We discussed at the NE Scala Symposium ways for various libraries to abstract over fs2.Task and monix.eval.Task, both of which have a lot to like and a lot of people who like them. For us, it’s possible to abstract away Task, but significantly raises barriers to writing middleware or even composing library-provided building blocks. Far more difficult would be abstracting over Stream, which would require a separate branch, which we are moving away from.

However, a module with entity codecs for monix would offer a nice solution. Just like we support Ok(scala.concurrent.Future("hello")), we could support Ok(monix.eval.Task.eval("hello")). Similarly, an Ok(observable) or Ok(iterant) could be converted to an EntityBody. It would require a monix support import and some runtime conversion, but I imagine this results in a more pleasant Monix experience alongside fs2 than any extra abstractions we’ve imagined to support Monix without fs2.

[rossabaker]

It will handle Monix Task. It won’t handle Observable, but a reactive streams module would pick up both that and akka-stream.

[armanbilge]

This issue reads to me a lot like a monix-http4s integration, and there’s no Monix you can use alongside CE3 (yet). akka-stream is interesting but seems unlikely use-case IMHO since they have akka-http. Closing but of course if there is interest this can pop up as a new repo at anytime.