Aufgabe2
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commit
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apply plugin: 'java'
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apply plugin: 'idea'
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apply plugin: 'application'
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repositories {
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mavenCentral()
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mavenLocal()
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}
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dependencies {
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implementation 'com.typesafe.akka:akka-actor-typed_2.13:2.8.0'
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implementation 'ch.qos.logback:logback-classic:1.2.3'
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testImplementation 'com.typesafe.akka:akka-actor-testkit-typed_2.13:2.8.0'
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testImplementation 'junit:junit:4.13.1'
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}
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mainClassName = "com.example.AkkaQuickstart"
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run {
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standardInput = System.in
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}
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package com.example;
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import akka.actor.typed.ActorSystem;
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import java.io.IOException;
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public class AkkaQuickstart {
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public static void main(String[] args) {
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final ActorSystem<MessageMain.Create> messageMain = ActorSystem.create(MessageMain.create(), "callAround");
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messageMain.tell(new MessageMain.Create());
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try {
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System.out.println(">>> Press ENTER to exit <<<");
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System.in.read();
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} catch (IOException ignored) {
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} finally {
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messageMain.terminate();
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}
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}
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}
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package com.example;
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import akka.actor.typed.ActorRef;
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import akka.actor.typed.Behavior;
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import akka.actor.typed.javadsl.*;
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public class Bot extends AbstractBehavior<Bot.Message> {
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public interface Message {};
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public static class Start implements Message {
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ActorRef<Bot.Message> next;
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ActorRef<Bot.Message> nextnext;
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public Start(ActorRef<Bot.Message> next, ActorRef<Bot.Message> nextnext) {
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this.next = next;
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this.nextnext = nextnext;
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}
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}
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public static class Hello implements Message {
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ActorRef<Bot.Message> next;
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ActorRef<Bot.Message> nextnext;
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int counter;
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public Hello(ActorRef<Bot.Message> next, ActorRef<Bot.Message> nextnext, int counter) {
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this.next = next;
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this.nextnext = nextnext;
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this.counter = counter;
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}
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}
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public static Behavior<Message> create(String name) {
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return Behaviors.setup(context -> new Bot(context, name));
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}
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private final String name;
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private Bot(ActorContext<Message> context, String name) {
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super(context);
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this.name = name;
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}
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@Override
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public Receive<Message> createReceive() {
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return newReceiveBuilder()
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.onMessage(Hello.class, this::onHello)
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.onMessage(Start.class, this::onStart).build();
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}
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private Behavior<Message> onHello(Hello msg) {
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getContext().getLog().info("Hello {} for {}", msg.counter, this.name);
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if (msg.counter == 15) {
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return Behaviors.stopped();
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} else {
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msg.next.tell(new Hello(msg.nextnext, this.getContext().getSelf(), msg.counter+1));
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return this;
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}
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}
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private Behavior<Message> onStart(Start msg) {
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msg.next.tell(new Hello(msg.nextnext, this.getContext().getSelf(), 1));
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return this;
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}
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}
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package com.example;
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import akka.actor.typed.ActorRef;
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import akka.actor.typed.Behavior;
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import akka.actor.typed.javadsl.*;
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public class MessageMain extends AbstractBehavior<MessageMain.Create> {
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public static class Create {
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}
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public static Behavior<Create> create() {
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return Behaviors.setup(MessageMain::new);
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}
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private MessageMain(ActorContext<Create> context) {
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super(context);
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}
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@Override
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public Receive<Create> createReceive() {
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return newReceiveBuilder().onMessage(Create.class, this::onCreate).build();
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}
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private Behavior<Create> onCreate(Create command) {
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//#create-actors
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ActorRef<Bot.Message> a = this.getContext().spawn(Bot.create("Alice"), "alice");
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ActorRef<Bot.Message> b = this.getContext().spawn(Bot.create("Bob"), "bob");
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ActorRef<Bot.Message> c = this.getContext().spawn(Bot.create("Charlie"), "charlie");
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//#create-actors
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a.tell(new Bot.Start(b,c));
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return this;
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}
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}
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<?xml version="1.0" encoding="UTF-8"?>
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<configuration>
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<!-- This is a development logging configuration that logs to standard out, for an example of a production
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logging config, see the Akka docs: https://doc.akka.io/docs/akka/2.6/typed/logging.html#logback -->
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<appender name="STDOUT" target="System.out" class="ch.qos.logback.core.ConsoleAppender">
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<encoder>
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<pattern>[%date{ISO8601}] [%level] [%logger] [%thread] [%X{akkaSource}] - %msg%n</pattern>
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</encoder>
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</appender>
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<appender name="ASYNC" class="ch.qos.logback.classic.AsyncAppender">
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<queueSize>1024</queueSize>
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<neverBlock>true</neverBlock>
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<appender-ref ref="STDOUT" />
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</appender>
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<root level="INFO">
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<appender-ref ref="ASYNC"/>
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</root>
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</configuration>
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