I am using Brave library https://github.com/openzipkin/brave for tracing and now I would like to use it also for Kafka consumer. I would like to avoid adding Spring Sleuth and leverage just Brave Kafka instrumentation https://github.com/openzipkin/brave/tree/master/instrumentation/kafka-clients.

For the Kafka consumer I use @KafkaListener. The code looks like this:

TestKafkaEndpoint.java

@Service
public class TestKafkaEndpoint {

    @KafkaListener(topics = "myTestTopic", containerFactory = "testKafkaListenerContainerFactory")
    public void procesMyRequest(@Payload final MyRequest request) {
       // do some magic...
    }
}

And configuration class TestKafkaConfig.java

@Configuration
@EnableKafka
@ComponentScan
public class TestKafkaConfig {

    @Bean
    public ConsumerFactory<String, MyRequest> testConsumerFactory() {
        final Map<String, Object> consumerProperties = new HashMap<>();
        consumerProperties.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, "kafka01-localhost:9092");
        consumerProperties.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
        consumerProperties.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, JsonDeserializer.class);
        consumerProperties.put(ConsumerConfig.GROUP_ID_CONFIG, "TestGROUP");
        return new DefaultKafkaConsumerFactory<>(consumerProperties, new StringDeserializer(), new JsonDeserializer<>(MyRequest.class));
    }

    @Bean
    public KafkaListenerContainerFactory<ConcurrentMessageListenerContainer<String, MyRequest>> testKafkaListenerContainerFactory() {
        final ConcurrentKafkaListenerContainerFactory<String, MyRequest> factory = new ConcurrentKafkaListenerContainerFactory<>();
        factory.setConsumerFactory(testConsumerFactory());
        factory.getContainerProperties().setErrorHandler(new LoggingErrorHandler());
        return factory;
    }

But I do not know how to use KafkaConsumer when using Kafka factory or leverage the KafkaTracing. Does anyone has any experience with that and got it working?