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import scalaz._ | |
import scalaz.stream._ | |
import scodec.bits._ | |
type EntityBody[F] = Process[Free.FreeC[F, ?], ByteVector] | |
final case class Request[A] | |
( method: Method | |
, uri: Uri | |
, httpVersion: HttpVersion | |
, headers: CI[String] ==>> IList[String] | |
, body: A | |
) | |
final case class Response[A] | |
( status: Status | |
, httpVersion: HttpVersion | |
, headers: CI[String] ==>> IList[String] | |
, body: A | |
) | |
sealed trait HttpcOps[A] | |
object HttpcOps { | |
final case class Send[F[_]]( req: Request[EntityBody[F]]) extends HttpcOps[Response[EntityBody[F]]] | |
} | |
sealed abstract class Httpc[F[_]](inj: HttpcOps ~> F) { | |
final def send(req: Request[EntityBody[F]]): Free.FreeC[F, Response[EntityBody[F]]] = | |
Free.liftFC(inj(HttpcOps.Send(req))) | |
} |
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import scalaz._ | |
import scalaz.concurrent._ | |
import scalaz.stream._ | |
import org.http4s._ | |
object TestHttpcOps { | |
// HttpcOps interpreters will need to know about the interpreter for the algebras in which they are embedded | |
// so they can run the effects created while streaming the body | |
def apply[F[_]](f: => F ~> Task): HttpcOps ~> Task = | |
new (HttpcOps ~> Task) { | |
import HttpcOps._ | |
def apply[A](h: HttpcOps[A]) = | |
h match { | |
case o: Send[f] => | |
val req = o.req | |
if (req.method == Method.POST && req.uri == Http4s.uri("https://example.com/echo")) { | |
val reqBody = | |
req.body. | |
// run the interpreter, as if we were sending to a real server | |
translate(new (Free.FreeC[f, ?] ~> Task) { | |
def apply[A](ff: Free.FreeC[f, A]) = Free.runFC(ff)(f) // <-- compile error, need evidence that F =:= f somehow | |
}) | |
val respBody = | |
// since this is just a fake server, we just turn the stream back into an entity body | |
reqBody.translate(new (Task ~> Free.FreeC[F, ?]) { | |
def apply[A](a: Task[A]) = ??? ///Free.pure[Coyoneda[F, ?], A](a) | |
}) | |
Task.delay(Response(Status.Ok, req.httpVersion, IMap(), body)) | |
} else | |
Task.delay(Response(Status.NotFound, req.httpVersion, IMap(), EntityBody.empty[f])) | |
} | |
} | |
} |
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