Book Image

Akka Cookbook

By : Vivek Mishra, Héctor Veiga Ortiz
Book Image

Akka Cookbook

By: Vivek Mishra, Héctor Veiga Ortiz

Overview of this book

Akka is an open source toolkit that simplifies the construction of distributed and concurrent applications on the JVM. This book will teach you how to develop reactive applications in Scala using the Akka framework. This book will show you how to build concurrent, scalable, and reactive applications in Akka. You will see how to create high performance applications, extend applications, build microservices with Lagom, and more. We will explore Akka's actor model and show you how to incorporate concurrency into your applications. The book puts a special emphasis on performance improvement and how to make an application available for users. We also make a special mention of message routing and construction. By the end of this book, you will be able to create a high-performing Scala application using the Akka framework.
Table of Contents (18 chapters)
Title Page
About the Authors
About the Reviewer
Customer Feedback

Exception handling

Like all the other Akka modules, Akka HTTP has great exception handling mechanisms. By default, if anything in your route throws an exception, the server returns a 500 response, which means there is an internal server error. This is a useful default behavior; however, you might need to do something more specific and respond in a different way depending on the exception thrown.

In this recipe, we will revisit how to add an exception handler to your routes. This allows you to customize the behavior of your route when exceptions are thrown.

Getting ready

To step through this recipe, we need to import the Hello-Akka project and the required Akka HTTP dependency we added in the previous recipe. 

How to do it...

For this recipe, perform the following steps:

  1. First, create a trait where you will define your exception handler. Create a file named RouteExceptionHandler.scala inside the com.packt.chapter9 package. The content should be as follows:
        package com.packt.chapter9