Hello World example from readme seems not to work

[KovaxG]

Hi, I really like the idea of finch, and I'm trying to test it out, but sadly I keep hitting obstacles.
First there was an issue with the versions, ( #1194) but I finally solved that. But now I can't get the example hello world to work either.

I'm trying

import io.finch._
import cats.effect.IO
import com.twitter.finagle.Http

object Server extends App with Endpoint.Module[IO] {
  val api: Endpoint[IO, String] = get("hello") { Ok("Hello, World!") }
  Http.server.serve(":8080", api.toServiceAs[Text.Plain])
}

but all I get is

Aug 12, 2020 1:16:58 PM com.twitter.finagle.Init$ $anonfun$once$1
INFO: Finagle version 20.3.0 (rev=e3fd6d1bd88c9ed7edeb98a6598e23800924c633) built at 20200308-110626

Process finished with exit code 0

I'm not sure if the problem is on my side or with the example.

[rpless]

Hi @KovaxG I believe this is an issue with the docs. I think #1250 fixes it. I will try to take a look and merge it this weekend.
Basically, Http.server.serve is returning a future that represents the life time of the server. Because it is a future it returns immediately and then the program exits. You can wrap it in Await.ready to block it until the server shuts down like so:

Await.ready(Http.server.serve(":8080", api.toServiceAs[Text.Plain]))

[hderms]

I can confirm this is how we use Finch, as well