in docker/data-generator/src/main/java/org/apache/flink/playground/datagen/DataGenerator.java [36:48]
public static void main(String[] args) {
Producer producer = new Producer(KAFKA, TOPIC);
Runtime.getRuntime()
.addShutdownHook(
new Thread(
() -> {
LOG.info("Shutting down");
producer.close();
}));
producer.run();
}