datagenproducer

This is a simple reactive Kafka Avro producer application. It produces Avro messages to Confluent Cloud.

Secrets are stored in Vault. To prepare Vault, follow this guide and then

$ vault kv put -mount=secret ccloud1/cc-default/quarkus1 cluster0-key=... cluster0-secret=... sr-key=... sr-secret=...
$ vault kv patch -mount=secret ccloud1/cc-default/quarkus1 cluster0-bootstrap-server=... sr-url=https://...

$ cat <<EOF | vault policy write cc-default-quarkus1 -
path "secret/data/ccloud1/cc-default/quarkus1" {
  capabilities = ["read"]
}
EOF

This project uses Quarkus, the Supersonic Subatomic Java Framework.

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

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

You can then execute your native executable with: ./target/datagenproducer-1.0-SNAPSHOT-runner

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

Related Guides

SmallRye Reactive Messaging - Kafka Connector (guide): Connect to Kafka with Reactive Messaging

Provided Code

Reactive Messaging codestart

Use SmallRye Reactive Messaging