Use of “Quarkus Security OpenID Connect Multi Tenancy” in an own small example

That blog post is about the usage of the “Quarkus Security OpenID Connect Multi Tenancy” implementation in an own small example, how to extract a tenant and reconfigure OIDC configuration for Keycloak.

This blog post is structured as followed:

  • Objectives
  • Use case definition
  • Architecture
  • Multi tenancy realization
  • Technologies
  • Implementation
  • Summary

You can find the code in the under construction GitHub project.

Basics understanding: “A tenant is a group of users who share a common access with specific privileges to the software instance. …” Wikipedia

Keep in mind there is no common single definition what exactly multi tenancy is in detail. One definition you can find in Wikipedia or one in the IBM learn hub, and many more exist.

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How to simply examine a JSON response from a Cloudant search in Java

This is a short cheat sheet about, how to simply examine a JSON response from a Cloudant search in Java. I found different examples, but these examples were (more or less) older examples, where I missed some pieces and at the end for me the Java EE documentation was the best resource to realize it.

The JSON I wanted to examine, was a JSON with a nested JSON array and that array also contains a nested JSON.

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How to use environment variables to make a containerized Quarkus application more flexible

This blog post addresses the topic, how to use environment variables to make a containized Quarkus application more flexible. We will touch following technologies QuarkusOpenJ9 Java runtimeMicroProfileDockerfile definition and Code Engine.

When you run a containerized application on a container orchestration platform like KubernetesOpen Shift or with a serverless framework like Knative or Code Engine or on other platforms, it is helpful to pass endpoints to other applications to the containerized application by using environment variables. When the container will be restarted, these variables can be provided to the container and no adjustment in the source code is necessary. You can use configmaps or in Code Engine simple the environment variable itself.

We will follow along an application example for the implementation and the example source code you find in the Get started to deploy a Java Microservices application to Code Engine workshop. (or the direct link to the used file in the GitHub repository is provided in the blog post itself)

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Configure the attach debug for Quarkus in Visual Studio Code

This blog post is a short cheat sheet for:

  • How to simply organize workspaces and the debugging configuration separated from source code saved in GitHub.
  • How to simply configure attach debug for Quarkus in Visual Studio Code

The advantage with that organization is:

You can easily delete the source code saved in GitHub from your local machine, but you don’t lose the debugging or other configurations you did.

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Authentication and Authorization for Java Microservices with Keycloak, Quarkus and Microprofile

In this blog post I want to point out that I created a 18 min YouTube video related to the newly created workshop Get started with security for your Java Microservices made by Harald, Niklas and me .

I focus in that video on the topics authentication and authorization for Java Microservices with Keycloak, Quarkus and Microprofile. Have fun 😉

Select your starting point for the video:

The workshop documentation with MkDocs:


I hope this was useful for you and let’s see what’s next?

Greetings,

Thomas

#Authorization, #Authentication, #Java, #Microprofile, #Quarkus, #Keycloak

Get your Java microservice up and running

In this blog post I want to highlight the news, that our tutorial Get your Java Microservice up and running is now available on IBM Developer.

After you complete this workshop, you will:

  • Understand the Java implementation of a cloud-native RESTful Java microservice built on the open technologies Eclipse MicroProfile and Open Liberty
  • Be able to describe how to effectively build and run a microservice on a local machine in a container
  • Understands the steps needed to deploy a single microservice to Kubernetes and on the IBM Cloud Kubernetes service

I hope this was useful for you and let’s see what’s next?

Greetings,

Thomas

#Java, #Microprofile, #Kubernetes, #Docker, #IBMCloud

Get your Java Microservice up and running!

In this blog post I want to highlight the hands-on workshop “Get your Java Microservice up and running!“, now available in GitBook . That workshop demonstrates how to build a Microservice with Java and how to deploy the Microservice Kubernetes on the IBM Cloud. The Microservice in this workshop is kept as simple as possible, so that it can be used as a starting point for other Microservices. The Microservice has been developed with Java EE, OpenLiberty and Eclipse MicroProfile.

The workshop is a part of the open source project Cloud Native Starter, which contains sample code that demonstrates how to get started with cloud-native applications and Microservice based architectures.
The Workshop has a related badge called Cloud Native Starter Level 1. This badge is available at Acclaim. In the related quiz you can verify your knowledge you achieved in the workshop.

The gif below show some major steps in the hands-on workshop. You will develop locally a Java Microservice and deploy that Microservice to a free Kubernetes Cluster on IBM Cloud.

microservice docker java kubernetes deployment

I hope this was useful for you and let’s see what’s next?

Greetings,

Thomas

#microprofile, #java, #ibmcloud, #openliberty, #microservices, #kubernetes