| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.gearpump.akkastream.example |
| |
| import akka.NotUsed |
| import akka.stream.ClosedShape |
| import org.apache.gearpump.akkastream.GearpumpMaterializer |
| import org.apache.gearpump.cluster.main.ArgumentsParser |
| import org.apache.gearpump.util.AkkaApp |
| |
| import scala.concurrent.Await |
| import scala.concurrent.duration._ |
| |
| /** |
| * Stream example showing Broadcast and Merge |
| */ |
| object Test11 extends AkkaApp with ArgumentsParser { |
| // scalastyle:off println |
| override def main(akkaConf: Config, args: Array[String]): Unit = { |
| import akka.actor.ActorSystem |
| import akka.stream.scaladsl._ |
| |
| implicit val system = ActorSystem("Test11", akkaConfig) |
| implicit val materializer = GearpumpMaterializer() |
| // implicit val materializer = |
| // ActorMaterializer(ActorMaterializerSettings(system).withAutoFusing(false)) |
| implicit val ec = system.dispatcher |
| |
| val g = RunnableGraph.fromGraph(GraphDSL.create() { |
| implicit builder: GraphDSL.Builder[NotUsed] => |
| |
| import GraphDSL.Implicits._ |
| val in = Source(1 to 10) |
| val output: (Any) => Unit = any => { |
| val s = s"**** $any" |
| println(s) |
| } |
| val out = Sink.foreach(output) |
| |
| val broadcast = builder.add(Broadcast[Int](2)) |
| val merge = builder.add(Merge[Int](2)) |
| |
| val f1, f2, f3, f4 = Flow[Int].map(_ + 10) |
| |
| in ~> f1 ~> broadcast ~> f2 ~> merge ~> f3 ~> out |
| broadcast ~> f4 ~> merge |
| |
| ClosedShape |
| }) |
| |
| g.run() |
| |
| Await.result(system.whenTerminated, 60.minutes) |
| } |
| // scalastyle:on println |
| } |