Demo Project for Online Stream #13 - Kafka Streams

Demo project for online stream #13 about Kafka Streams

Access to Online Stream on YouTube

To get a link to online stream on YouTube please do the following:

💰 Make any donation to support my volunteering initiative to help Ukrainian Armed Forces by means described on my website
📧 Write me an email indicating donation amount and time
📺 I will reply with the link to the stream on YouTube.

Thank you in advance for your support! Слава Україні! 🇺🇦

Running the application in dev mode

To start up Kafka brokers please use the provided docker-compose file.

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

./gradlew quarkusDev

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:

./gradlew build

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

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

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

./gradlew build -Dquarkus.package.type=uber-jar

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

Creating a native executable

You can create a native executable using:

./gradlew build -Dquarkus.package.type=native

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

./gradlew build -Dquarkus.package.type=native -Dquarkus.native.container-build=true

You can then execute your native executable with: ./build/stream-13-demo-app-1.0.0-SNAPSHOT-runner

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

Related Guides

SmallRye Reactive Messaging - Kafka Connector (guide): Connect to Kafka with Reactive Messaging
YAML Configuration (guide): Use YAML to configure your Quarkus application
RESTEasy Classic (guide): REST endpoint framework implementing JAX-RS and more
Apache Kafka Streams (guide): Implement stream processing applications based on Apache Kafka

Provided Code

YAML Config

Configure your application with YAML

Related guide section...

The Quarkus application configuration is located in src/main/resources/application.yml.

Reactive Messaging codestart

Use SmallRye Reactive Messaging

Related Apache Kafka guide section...

RESTEasy JAX-RS

Easily start your RESTful Web Services