Skipping binary dependencies when is not necessary

[rafaparadela]

This PR closes #575

Now, if you have this service:

@service(Avro) trait UnaryGreeter[F[_]] {
  def getHello(request: Empty.type): F[HelloResponse]
  def sayHello(request: HelloRequest): F[HelloResponse]
}

Means that you don't want to have any http capability for your service, so @service is generating no http stuff. So no http4s dependency is necessary.

But if you add @http to any operation, like that:

@service(Avro) trait UnaryGreeter[F[_]] {
  @http def getHello(request: Empty.type): F[HelloResponse]
  def sayHello(request: HelloRequest): F[HelloResponse]
}

Given that the @http annotation has been moved to http module, you will need to add the mu-http (with the transitive http4s dependency).

[codecov]

Codecov Report

Merging #581 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #581   +/-   ##
=======================================
  Coverage   82.27%   82.27%           
=======================================
  Files          63       63           
  Lines         965      965           
  Branches       14       14           
=======================================
  Hits          794      794           
  Misses        171      171

Impacted Files	Coverage Δ
...c/main/scala/higherkindness/mu/http/protocol.scala	100% <ø> (ø)	⬆️

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[juanpedromoreno]

Why do we need a package object here instead of a standard one?

[rafaparadela]

Done at
b8be4b7

[juanpedromoreno]

Maybe for consistency, we want to have an additional subpackage protocol, like in the rpc case.

[rafaparadela]

Done at b8be4b7

[juanpedromoreno]

I was thinking about an standard package rather than an object

[rafaparadela]

Take a look at the name of the file, we already had protocol.scala (because this was cloned from the rpc part).