Book Image

Hands-On Cloud Development with WildFly

By : Tomasz Adamski
Book Image

Hands-On Cloud Development with WildFly

By: Tomasz Adamski

Overview of this book

The book starts by introducing you to WildFly Swarm—a tool that allows you to create runnable microservices from Java EE components. You’ll learn the basics of Swarm operation—creating microservices containing only the parts of enterprise runtime needed in a specific case. Later, you’ll learn how to configure and test those services. In order to deploy our services in the cloud, we’ll use OpenShift. You’ll get to know basic information on its architecture, features, and relationship to Docker and Kubernetes. Later, you’ll learn how to deploy and configure your services to run in the OpenShift cloud. In the last part of the book, you’ll see how to make your application production-ready. You’ll find out how to configure continuous integration for your services using Jenkins, make your application resistant to network failures using Hystrix, and how to secure them using Keycloak. By the end of the book, you’ll have a functional example application and will have practical knowledge of Java EE cloud development that can be used as a reference in your other projects.
Table of Contents (14 chapters)

Learning OpenShift builds

In the previous chapters, we did some serious magic in order to build our application. To be able to run the builds, we executed the following command:

oc create -f

In previous chapters, when we wanted to build our application, we invoked the following command:

oc new-app wildflyswarm-10-centos7~ (...)

After a lot of mysterious stuff had happened (as indicated by growing logs), we were able to see our application working. Now, it's time to explain what actually happened under the hood. Let's get to know OpenShift builds.

In general, an OpenShift build is an operation that transforms input parameters into a resulting object that is used to start an application. In most...