#KafkaListener separate filtering logic for each listener - spring

Question

I need to define a custom filtering strategy for each listener produced by the listener factory.
Currently, I'm using RecordFilterStrategy to do that:
#Bean
ConcurrentKafkaListenerContainerFactory<String, GenericRecord> kafkaListenerContainerFactoryProject() {
ConcurrentKafkaListenerContainerFactory<String, GenericRecord> factory = new ConcurrentKafkaListenerContainerFactory<>();
factory.setConsumerFactory(consumerFactory());
factory.setRecordFilterStrategy(new RecordFilterStrategy<String, GenericRecord>() {
#Override
public boolean filter(ConsumerRecord<String, GenericRecord> consumerRecord) {
return true;
}
});
return factory;
}
But such filtering applies to all listeners produced by this factory. What I need is something like to define the different logic for each listener:
#Component
#SendTo("out")
#KafkaListener(topics = "incoming")
public class TestListener {
#Filter
public boolean filter(){
return true;
}
#KafkaHandler
public TestObject listener(TestObject testObject) {
log.debug("Received Message: " + testObject);
return testObject;
}
}
Does spring-kafka have some tools to do that? Or I need to write such logic on my own?
Thanks in advance!

Answer 1

No, you don't. What you just need is a set of ConcurrentKafkaListenerContainerFactory beans with particular RecordFilterStrategy. Then your #KafkaListener should just specify which factory they are based on:
/**
* The bean name of the {#link org.springframework.kafka.config.KafkaListenerContainerFactory}
* to use to create the message listener container responsible to serve this endpoint.
* <p>If not specified, the default container factory is used, if any.
* #return the container factory bean name.
*/
String containerFactory() default "";