org.springframework.kafka.listener.BatchConsumerAwareMessageListener Maven / Gradle / Ivy
/*
* Copyright 2017 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.kafka.listener;
import java.util.List;
import org.apache.kafka.clients.consumer.Consumer;
import org.apache.kafka.clients.consumer.ConsumerRecord;
/**
* Listener for handling a batch of incoming Kafka messages; the list
* is created from the consumer records object returned by a poll.
* Access to the {@link Consumer} is provided.
*
* @param the key type.
* @param the value type.
*
* @author Gary Russell
*
* @since 2.0
*/
@FunctionalInterface
public interface BatchConsumerAwareMessageListener extends BatchMessageListener {
/**
* Invoked with data from kafka. Containers should never call this since it they
* will detect that we are a consumer aware acknowledging listener.
* @param data the data to be processed.
*/
@Override
default void onMessage(List> data) {
throw new UnsupportedOperationException("Container should never call this");
}
@Override
void onMessage(List> data, Consumer consumer);
}