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Add setup operator #26192

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Martynas Mickevičius 2019-05-17 09:54:18 +03:00 • committed by Johan Andrén
parent 7b20b89ce0
commit 18d970fc8e
14 changed files with 574 additions and 4 deletions
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10
akka-stream/src/main/scala/akka/stream/javadsl/Source.scala
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@ -26,7 +26,7 @@ import scala.concurrent.{ Future, Promise }
import scala.compat.java8.OptionConverters._
import java.util.concurrent.CompletionStage
import java.util.concurrent.CompletableFuture
import java.util.function.Supplier
import java.util.function.{ BiFunction, Supplier }
import akka.util.unused
import com.github.ghik.silencer.silent
@ -359,6 +359,14 @@ object Source {
case other => new Source(scaladsl.Source.fromGraph(other))
}
/**
* Defers the creation of a [[Source]] until materialization. The `factory` function
* exposes [[ActorMaterializer]] which is going to be used during materialization and
* [[Attributes]] of the [[Source]] returned by this method.
*/
def setup[T, M](factory: BiFunction[ActorMaterializer, Attributes, Source[T, M]]): Source[T, CompletionStage[M]] =
scaladsl.Source.setup((mat, attr) ⇒ factory(mat, attr).asScala).mapMaterializedValue(_.toJava).asJava
/**
* Combines several sources with fan-in strategy like `Merge` or `Concat` and returns `Source`.
*/