Package org.springframework.kafka.listener

Interface AcknowledgingMessageListener<K,V>

Type Parameters:
K - the key type.
V - the value type.
All Superinterfaces:
GenericMessageListener<org.apache.kafka.clients.consumer.ConsumerRecord<K,V>>, MessageListener<K,V>
Functional Interface:
This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
@FunctionalInterface public interface AcknowledgingMessageListener<K,V> extends MessageListener<K,V>
Listener for handling incoming Kafka messages, propagating an acknowledgment handle that recipients can invoke when the message has been processed.
Author:
Marius Bogoevici, Gary Russell

  • Method Summary

    Modifier and Type
    Method
    Description
    default void
    onMessage(org.apache.kafka.clients.consumer.ConsumerRecord<K,V> data)
    Invoked with data from kafka.
    void
    onMessage(org.apache.kafka.clients.consumer.ConsumerRecord<K,V> data, Acknowledgment acknowledgment)
    Invoked with data from kafka.

    Methods inherited from interface org.springframework.kafka.listener.GenericMessageListener

    onMessage, onMessage

  • Method Details

    • onMessage

      default void onMessage(org.apache.kafka.clients.consumer.ConsumerRecord<K,V> data)
      Invoked with data from kafka. Containers should never call this since it they will detect that we are an acknowledging listener.
      Specified by:
      onMessage in interface GenericMessageListener<K>
      Parameters:
      data - the data to be processed.

    • onMessage

      void onMessage(org.apache.kafka.clients.consumer.ConsumerRecord<K,V> data, @Nullable Acknowledgment acknowledgment)
      Invoked with data from kafka.
      Specified by:
      onMessage in interface GenericMessageListener<K>
      Parameters:
      data - the data to be processed.
      acknowledgment - the acknowledgment.