Getting started with Apache Kafka and Quarkus

This project demonstrates how to build a Quarkus application using Apache Kafka in less than 10 minutes. It uses Reactive Messaging to simplify the interaction with Kafka.

Start the broker

You would need a Kafka broker. Start one using:

docker-compose up -d

NOTE: Stop the broker using docker-compose down; docker-compose rm

Running the application in dev mode

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

./mvnw quarkus:dev

Use the application

curl --header "Content-Type: application/json" \
  --request POST \
  --data '{"year":2008, "title":"The Dark Knight"}' \
  http://localhost:8080/

Packaging and running the application

The application can be packaged using:

./mvnw package

It produces the getting-started-kafka-1.0.0-SNAPSHOT-runner.jar file in the /target directory. Be aware that it’s not an über-jar as the dependencies are copied into the target/lib directory.

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

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

The application is now runnable using java -jar target/getting-started-kafka-1.0.0-SNAPSHOT-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

You can then execute your native executable with: ./target/getting-started-kafka-1.0.0-SNAPSHOT-runner