At the moment I am creating a plan to integrate Elixir at enterprise scale for several clients of the company I work for.

Part of this integration would mean the application should comply with the guidelines as outlined in Uncle Bob’s Clean Architecture. (A tldr version can be found here: Clean Coder Blog)

The part I am currently stuggling with is using Interactors in Elixir, without the use of any libraries.

How Interactors are usually implemented is by creating an Interactor interface (with all available functions/methods). The business-logic core expects an object where this Interactor is implemented, so the business-logic core can be fully agnostic of data sources and such.

An example of an interactor based design in Go can be found here: go-realworld-clean/uc/userGet.go at master · err0r500/go-realworld-clean · GitHub

As far as I know there is no easy way to define an interface in Elixir, the way you’d usually do in languages like Go, Typescript, Java or even Scala. I was not able to find any good examples where this kind of architecture is implemented in Elixir.

Using typespecs/behaviours/protocols seems to make the code become quite messy if the Interactors grow in size, so I am looking for a way to implement this architecture while keeping the code clean and easy to maintain.

Thanks a lot in advance!