Spring Cloud Stream自定义活页夹未注册。 如果使用@Configuration，则禁用kafka绑定程序

Question

I'm trying to make a custom spring cloud stream binder but it just wont register itself:

Binder Implementation:

public class DPSBinder implements Binder<SubscribableChannel, ConsumerProperties, ProducerProperties> {

private DecisionPersistenceServiceClient dpsClient;

private MessageHandler dpsClientConsumerMessageHandler = null;

public DPSBinder(DecisionPersistenceServiceClient dpsClient) {
    this.dpsClient = dpsClient;
}

@Override
public Binding<SubscribableChannel> bindConsumer(String name, String group, SubscribableChannel inboundBindTarget,
        ConsumerProperties consumerProperties) {

    return null;
}

@Override
public Binding<SubscribableChannel> bindProducer(String name, SubscribableChannel outboundBindTarget,
        ProducerProperties producerProperties) {

    switch (name) {

    case "PERSIST_POST":

        this.dpsClientConsumerMessageHandler = message -> dpsClient.persist((DPAPayload) message.getPayload());

        break;

    default:
        this.dpsClientConsumerMessageHandler = null;

    }

    if (this.dpsClientConsumerMessageHandler != null)
        this.subscribe(outboundBindTarget);

    return () -> this.dpsClientConsumerMessageHandler = null;

}

public void subscribe(SubscribableChannel outboundBindTarget) {

    outboundBindTarget.subscribe(this.dpsClientConsumerMessageHandler);
}}

configuration class:

@Configuration
public class DPSBinderConfiguration {
@Bean
public DPSBinder dpsBinder(DecisionPersistenceServiceClient dpsClient) {

    return new DPSBinder(dpsClient);
}}

spring.binders file:

dps:something.something.DPSBinderConfiguration

application.yml

application.yml
spring:
 cloud:
  stream:
   bindings:
    input:
      destination: DPP_EVENTS
      group: dpp-local
      binder: kafka
    output:
      destination: PERSIST_POST
      binder: dps
  binders:
    kafka:
      type: kafka
    dps:
      type: dps

I've followed the spring cloud stream guidelines for creating a custome binder but this is not working. Moreover, using the @Configuration for creating binder beans disables the kafka binder which i've added on classpath.

Answer 1

I found the issue. Actually @Configuration should not be used where the binding bean is being declared. Also, there were some logical issues in My binder implementation which i fixed.