spring-kafka ContainerPausingBackOffHandler 源码
spring-kafka ContainerPausingBackOffHandler 代码
文件路径：/spring-kafka/src/main/java/org/springframework/kafka/listener/ContainerPausingBackOffHandler.java
/*
* Copyright 2022 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 java.time.Duration;
import org.apache.kafka.common.TopicPartition;
import org.springframework.lang.Nullable;
/**
* A {@link BackOffHandler} that pauses the container for the backoff.
*
* @author Gary Russell
* @since 2.9
*
*/
public class ContainerPausingBackOffHandler implements BackOffHandler {
private final DefaultBackOffHandler defaultBackOffHandler = new DefaultBackOffHandler();
private final ListenerContainerPauseService pauser;
/**
* Create an instance with the provided {@link ListenerContainerPauseService}.
* @param pauser the pause service.
*/
public ContainerPausingBackOffHandler(ListenerContainerPauseService pauser) {
this.pauser = pauser;
}
@Override
public void onNextBackOff(@Nullable MessageListenerContainer container, Exception exception, long nextBackOff) {
if (container == null) {
this.defaultBackOffHandler.onNextBackOff(container, exception, nextBackOff); // NOSONAR
}
else {
this.pauser.pause(container, Duration.ofMillis(nextBackOff));
}
}
@Override
public void onNextBackOff(MessageListenerContainer container, TopicPartition partition, long nextBackOff) {
this.pauser.pausePartition(container, partition, Duration.ofMillis(nextBackOff));
}
}
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