alvinalexander.com | career | drupal | java | mac | mysql | perl | scala | uml | unix  

Akka/Scala example source code file (TransformationFrontendMain.java)

This example Akka source code file (TransformationFrontendMain.java) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Akka and Scala source code examples by using tags.

All credit for the original source code belongs to akka.io; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Akka tags/keywords

actor, actorsystem, akka, atomicinteger, cluster, clustersystem, concurrent, config, dispatch, duration, executioncontext, finiteduration, runnable, string, time, timeout, transform, transformationfrontendmain, transformationjob

The TransformationFrontendMain.java Akka example source code

package sample.cluster.transformation;

import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicInteger;

import com.typesafe.config.Config;
import com.typesafe.config.ConfigFactory;

import sample.cluster.transformation.TransformationMessages.TransformationJob;
import scala.concurrent.ExecutionContext;
import scala.concurrent.duration.Duration;
import scala.concurrent.duration.FiniteDuration;
import akka.actor.ActorRef;
import akka.actor.ActorSystem;
import akka.actor.Props;
import akka.dispatch.OnSuccess;
import akka.util.Timeout;
import static akka.pattern.Patterns.ask;

public class TransformationFrontendMain {

  public static void main(String[] args) {
    // Override the configuration of the port when specified as program argument
    final String port = args.length > 0 ? args[0] : "0";
    final Config config = ConfigFactory.parseString("akka.remote.netty.tcp.port=" + port).
      withFallback(ConfigFactory.parseString("akka.cluster.roles = [frontend]")).
      withFallback(ConfigFactory.load());

    ActorSystem system = ActorSystem.create("ClusterSystem", config);

    final ActorRef frontend = system.actorOf(
        Props.create(TransformationFrontend.class), "frontend");
    final FiniteDuration interval = Duration.create(2, TimeUnit.SECONDS);
    final Timeout timeout = new Timeout(Duration.create(5, TimeUnit.SECONDS));
    final ExecutionContext ec = system.dispatcher();
    final AtomicInteger counter = new AtomicInteger();
    system.scheduler().schedule(interval, interval, new Runnable() {
      public void run() {
        ask(frontend,
            new TransformationJob("hello-" + counter.incrementAndGet()),
            timeout).onSuccess(new OnSuccess<Object>() {
          public void onSuccess(Object result) {
            System.out.println(result);
          }
        }, ec);
      }

    }, ec);

  }
}

Other Akka source code examples

Here is a short list of links related to this Akka TransformationFrontendMain.java source code file:

... this post is sponsored by my books ...

#1 New Release!

FP Best Seller

 

new blog posts

 

Copyright 1998-2021 Alvin Alexander, alvinalexander.com
All Rights Reserved.

A percentage of advertising revenue from
pages under the /java/jwarehouse URI on this website is
paid back to open source projects.