spring-kafka RetryTopicSchedulerWrapper 源码
spring-kafka RetryTopicSchedulerWrapper 代码
文件路径：/spring-kafka/src/main/java/org/springframework/kafka/retrytopic/RetryTopicSchedulerWrapper.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.retrytopic;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.scheduling.TaskScheduler;
/**
* A wrapper class for a {@link TaskScheduler} to use for scheduling container resumption
* when a partition has been paused for a retry topic. Using this class prevents breaking
* Spring Boot's auto configuration for other frameworks. Use this if you are using Spring
* Boot and do not want to use that auto configured scheduler (if it is configured). This
* framework requires a scheduler bean and looks for one in this order: 1. A single
* instance of this class, 2. a single {@link TaskScheduler} bean, 3. when multiple
* {@link TaskScheduler}s are present, a bean with the name {@code taskScheduler}.
* If you use this class, you should provide a {@link TaskScheduler} that is not defined
* as a bean; this class will maintain the scheduler's lifecycle.
*
* @author Gary Russell
* @since 2.9
*/
public class RetryTopicSchedulerWrapper implements InitializingBean, DisposableBean {
private final TaskScheduler scheduler;
/**
* Create a wrapper for the supplied scheduler.
* @param scheduler the scheduler
*/
public RetryTopicSchedulerWrapper(TaskScheduler scheduler) {
this.scheduler = scheduler;
}
public TaskScheduler getScheduler() {
return this.scheduler;
}
@Override
public void afterPropertiesSet() throws Exception {
if (this.scheduler instanceof InitializingBean) {
((InitializingBean) this.scheduler).afterPropertiesSet();
}
}
@Override
public void destroy() throws Exception {
if (this.scheduler instanceof DisposableBean) {
((DisposableBean) this.scheduler).destroy();
}
}
}
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