Created
July 20, 2023 15:43
-
-
Save kamilkloch/09128c6be9dd1ada3f02f9b9061c6d66 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| import zio.Clock.ClockLive | |
| import zio.Console.ConsoleLive | |
| import zio._ | |
| import zio.stream.ZStream | |
| import java.io.IOException | |
| import java.util.concurrent.TimeUnit | |
| object ZioHub extends ZIOAppDefault { | |
| override def run: ZIO[Any with ZIOAppArgs with Scope, Any, Any] = { | |
| /** Feeds the provided hub with a timestamp every 500ms */ | |
| def tsService(hub: Hub[Long]): ZIO[Any, IOException, Nothing] = { | |
| (for { | |
| ts <- ClockLive.currentTime(TimeUnit.MILLISECONDS) | |
| published <- hub.publish(ts) | |
| _ <- if (published) ZIO.unit else ConsoleLive.printLine(s"Unsuccessful publish [ts=$ts]") | |
| ts2 <- ClockLive.currentTime(TimeUnit.MILLISECONDS) | |
| d = math.abs(ts2 - ts) | |
| _ <- if (d > 1) ConsoleLive.printLine(s"Delay: ${math.abs(ts2 - ts)}ms") else ZIO.unit | |
| } yield ()) | |
| .delay(500.millis).forever | |
| } | |
| val n = 10_000 | |
| val hubCapacity = 1024 | |
| ZIO.scoped { | |
| for { | |
| hub <- Hub.bounded[Long](hubCapacity) | |
| scope <- ZIO.scope | |
| _ <- tsService(hub).forkIn(scope) | |
| _ <- ZIO.foreachParDiscard(List.fill(n)(0))(_ => ZStream.fromHub(hub).runDrain) | |
| } yield () | |
| } | |
| } | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment