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test-keycloack

This is a show-case setup of server to server authentication using Keycloack.

Prerequisites

  • OpenJDK 17 - gradle does not support yet JdK 20.
  • Docker - a recent version.

Components

  • Keycloack service.
  • test-oauth2-client - a sample Java - Spring Boot service consuming resources exposed by the resource server.
  • test-outh2-server - a sample resource server written in Java with Spring Boot.

Building and running

The setup of the applications is done with the help of docker compose. The ompose.yaml in the project root directory builds and runs the 3 components described above.

To build:

docker-compose build

To run:

docker-compose up

docker-compose up command also mounts the file realm-export.json in the keycloack container so keycloack will import configuration when starting.

To access keycloack settings just go to:

http://localhost:8080/admin

and use admin/admin to authenticate. Select the realm mihaitest.

To test the software, use:

curl -v http://localhost:8000/testoauth2client/v1/resources/abcd

You can also use get-tocken shell script to directly authenticate and verify the token returned by keycloack.

test-oauth2-client

To build, use:

cd test-oauth2-client
gradle build

Run it with:

java -jar build/libs/test-oauth2-client-0.0.1-SNAPSHOT.jar

test-oauth2-server

To build, use:

cd test-oauth2-server
gradle build

Run it with:

java -jar build/libs/test-oauth2-server-0.0.1-SNAPSHOT.jar

Keycloack

We are using a pre-buiilt dockerized version of keycloack:

quay.io/keycloak/keycloak:21.1.1

The settings for keycloack server are in the file:

realm-export.json

in the root folder of the project.

macOS notes

Install OpenJDK 17:

brew install openjdk@17
sudo ln -s /usr/local/opt/openjdk@17/libexec/openjdk.jdk/ \
  /Library/Java/JavaVirtualMachines/openjdk-17.jdk
export JAVA_HOME=$(/usr/libexec/java_home -v 17.0.7)