From b0c7abc9230404a777c7ed5e2369cd0db3e757c7 Mon Sep 17 00:00:00 2001
From: Christoph Stahl <christoph.stahl@tu-dortmund.de>
Date: Tue, 9 May 2023 13:34:50 +0200
Subject: [PATCH] Added a timed actor to the project

---
 src/main/java/com/example/AkkaMainSystem.java |  1 +
 .../java/com/example/ExampleTimerActor.java   | 45 +++++++++++++++++++
 2 files changed, 46 insertions(+)
 create mode 100644 src/main/java/com/example/ExampleTimerActor.java

diff --git a/src/main/java/com/example/AkkaMainSystem.java b/src/main/java/com/example/AkkaMainSystem.java
index 7ddda70..868351b 100644
--- a/src/main/java/com/example/AkkaMainSystem.java
+++ b/src/main/java/com/example/AkkaMainSystem.java
@@ -25,6 +25,7 @@ public class AkkaMainSystem extends AbstractBehavior<AkkaMainSystem.Create> {
     private Behavior<Create> onCreate(Create command) {
         //#create-actors
         ActorRef<ExampleActor.Message> a = this.getContext().spawn(ExampleActor.create("Alice"), "alice");
+        ActorRef<ExampleTimerActor.Message> b = this.getContext().spawn(ExampleTimerActor.create(), "timeractor");
         //#create-actors
 
         a.tell(new ExampleActor.ExampleMessage(this.getContext().getSelf(),"Test123"));
diff --git a/src/main/java/com/example/ExampleTimerActor.java b/src/main/java/com/example/ExampleTimerActor.java
new file mode 100644
index 0000000..0bffbea
--- /dev/null
+++ b/src/main/java/com/example/ExampleTimerActor.java
@@ -0,0 +1,45 @@
+package com.example;
+
+import akka.actor.typed.javadsl.TimerScheduler;
+import akka.actor.typed.Behavior;
+import akka.actor.typed.javadsl.AbstractBehavior;
+import akka.actor.typed.javadsl.ActorContext;
+import akka.actor.typed.javadsl.Behaviors;
+import akka.actor.typed.javadsl.Receive;
+
+import java.time.Duration;
+
+
+public class ExampleTimerActor extends AbstractBehavior<ExampleTimerActor.Message> {
+
+    public interface Message {};
+
+
+    public record ExampleMessage(String someString) implements Message {  }
+
+    public static Behavior<Message> create() {
+        return Behaviors.setup(context -> Behaviors.withTimers(timers -> new ExampleTimerActor(context, timers)));
+    }
+
+    private final TimerScheduler<ExampleTimerActor.Message> timers;
+
+    private ExampleTimerActor(ActorContext<Message> context, TimerScheduler<ExampleTimerActor.Message> timers) {
+        super(context);
+        this.timers = timers;
+
+        Message msg = new ExampleMessage("test123");
+        this.timers.startSingleTimer(msg, msg, Duration.ofSeconds(10));
+    }
+
+    @Override
+    public Receive<Message> createReceive() {
+        return newReceiveBuilder()
+                .onMessage(ExampleMessage.class, this::onExampleMessage)
+                .build();
+    }
+
+    private Behavior<Message> onExampleMessage(ExampleMessage msg) {
+        getContext().getLog().info("I have send myself this message after 10 Seconds: {}", msg.someString);
+        return this;
+    }
+}