authzen-interop-kogito-quarkus Project

This is a demo for the Authzen interop using an open source decision service for the PDP, Kogito: https://kogito.kie.org/ Kogito uses Drools as its rule engine, see https://www.drools.org/

The model and logic is all in DMN. The file is: resources/mytodo.dmn. The generated documentation for the decision model is here

The only code in Java is for the "PIP", to read the list of users as the interop scenario requires to look up user info. See org.openid.authzen.Users.java

To read the DMN file, if you are using VSCode, install the extension "Kogito Bundle" - More details in the Kogito documentation: https://docs.kogito.kie.org/latest/html_single/#proc-kogito-vscode-extension_kogito-creating-running

There are plenty of resources to learn about DMN and the FEEL expression language. DMN and FEEL standards are maintained by the Object Management Group (OMG) group: https://www.omg.org/spec/DMN/

Pre-requisites

This project uses Quarkus, the Supersonic Subatomic Java Framework.

If you want to learn more about Quarkus, please visit its website: https://quarkus.io/.

To build the project, you need Java 17, maven 3.8 and Docker (optional). Docker is convenient to build the native images without having GraalVM installed.

Running the application in dev mode

You can run your application in dev mode that enables live coding using:

./mvnw compile quarkus:dev

NOTE: Quarkus now ships with a Dev UI, which is available in dev mode only at http://localhost:8080/q/dev/.

Packaging and running the application

The application can be packaged using:

./mvnw package

It produces the quarkus-run.jar file in the target/quarkus-app/ directory. Be aware that it’s not an über-jar as the dependencies are copied into the target/quarkus-app/lib/ directory.

The application is now runnable using java -jar target/quarkus-app/quarkus-run.jar.

If you want to build an über-jar, execute the following command:

./mvnw package -Dquarkus.package.type=uber-jar

The application, packaged as an über-jar, is now runnable using java -jar target/*-runner.jar.

Creating a native executable

You can create a native executable using:

./mvnw package -Pnative

Or, if you don't have GraalVM installed, you can run the native executable build in a container using:

./mvnw package -Pnative -Dquarkus.native.container-build=true

Or to build for amd64 if you are on Apple silicon:

./mvnw clean package -Dnative -Dquarkus.native.container-build=true -Dquarkus.native.builder-image=quay.io/quarkus/ubi-quarkus-graalvmce-builder-image:22.3.2-java17-amd64 -DskipTests

You can then execute your native executable with: ./target/authzen-interop-kogito-quarkus-1.0.0-SNAPSHOT-runner

If you want to learn more about building native executables, please consult https://quarkus.io/guides/maven-tooling.

Provided Code

Build docker image

Building the quarkus application (native executable). Assumes you followed the step to build the native executable above.

docker build --platform linux/amd64 -f src/main/docker/Dockerfile.native-micro -t eazerad/authzen-interop:0.1-quarkus-native .

Then to run:

docker run -i --rm -p 8080:8080 eazerad/authzen-interop:0.1-quarkus-native

Related Guides

• Kogito (guide): Add business automation capabilities - processes and rules with Kogito (a toolkit that originates from projects Drools and jBPM)