spring-kafka BatchInterceptor 源码
spring-kafka BatchInterceptor 代码
文件路径：/spring-kafka/src/main/java/org/springframework/kafka/listener/BatchInterceptor.java
/*
* Copyright 2021 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
*
* https://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 org.apache.kafka.clients.consumer.Consumer;
import org.apache.kafka.clients.consumer.ConsumerRecords;
import org.springframework.lang.Nullable;
/**
* An interceptor for batches of records.
*
* @param <K> the key type.
* @param <V> the value type.
*
* @author Gary Russell
* @since 2.7
*
*/
@FunctionalInterface
public interface BatchInterceptor<K, V> extends ThreadStateProcessor {
/**
* Perform some action on the records or return a different one. If null is returned
* the records will be skipped. Invoked before the listener.
* @param records the records.
* @param consumer the consumer.
* @return the records or null.
*/
@Nullable
ConsumerRecords<K, V> intercept(ConsumerRecords<K, V> records, Consumer<K, V> consumer);
/**
* Called after the listener exits normally.
* @param records the records.
* @param consumer the consumer.
*/
default void success(ConsumerRecords<K, V> records, Consumer<K, V> consumer) {
}
/**
* Called after the listener throws an exception.
* @param records the records.
* @param exception the exception.
* @param consumer the consumer.
*/
default void failure(ConsumerRecords<K, V> records, Exception exception, Consumer<K, V> consumer) {
}
}
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