Created
June 16, 2016 20:33
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| // Requires "com.twitter" %% "util-core" % "6.34.0" | |
| import com.twitter.concurrent.AsyncStream | |
| import com.twitter.util.{Await, Future} | |
| object TestStream extends App { | |
| def foo(read: () => Future[String], write: String => Future[Unit]): Future[Unit] = { | |
| def stream: AsyncStream[String] = AsyncStream.fromFuture(read()).flatMap(_ +:: stream) | |
| stream.scanLeft(0)(_ + _.toInt) | |
| .takeWhile(_ <= 1000000) | |
| .foreachF(i => write(i.toString)) | |
| } | |
| val t = System.nanoTime() | |
| val f = foo( | |
| read = () => Future.value("1"), | |
| write = { | |
| case "100000" => | |
| println("100k!") | |
| Future.value(()) | |
| case "500000" => | |
| println("500k!") | |
| Future.value(()) | |
| case _ => | |
| Future.value(()) | |
| } | |
| ) | |
| Await.result(f) | |
| val t2 = (System.nanoTime() - t) / 1000000000d | |
| println(s"Execution time: ${t2}s") | |
| } |
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