SpringBoot集成redisson实现延时队列

1. 先给项目导入redisson依赖

 		<dependency>
            <groupId>org.redisson</groupId>
            <artifactId>redisson-spring-boot-starter</artifactId>
            <version>3.15.4</version>
        </dependency>

2.配置redis

3、创建 RedissonConfig 配置

4、封装 Redis 延迟队列工具类

import lombok.extern.slf4j.Slf4j;
import org.redisson.api.RBlockingDeque;
import org.redisson.api.RDelayedQueue;
import org.redisson.api.RedissonClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import java.util.Map;
import java.util.concurrent.TimeUnit;

/**
 * @author bigboss
 */
@Slf4j
@Component
public class RedisDelayQueueUtil {

    @Autowired
    private RedissonClient redissonClient;

    /**
     * 添加延迟队列
     *
     * @param value     队列值
     * @param delay     延迟时间
     * @param timeUnit  时间单位
     * @param queueCode 队列键
     * @param 
     */
    public <T> void addDelayQueue(T value, long delay, TimeUnit timeUnit, String queueCode) {
        try {
            RBlockingDeque<Object> blockingDeque = redissonClient.getBlockingDeque(queueCode);
            RDelayedQueue<Object> delayedQueue = redissonClient.getDelayedQueue(blockingDeque);
            //删除之前进来的id值
            delayedQueue.remove(value);
            delayedQueue.offer(value, delay, timeUnit);
            log.info("(添加延时队列成功) 队列键：{}，队列值：{}，延迟时间：{}", queueCode, value, timeUnit.toSeconds(delay) + "秒");
        } catch (Exception e) {
            log.error("(添加延时队列失败) {}", e.getMessage());
            throw new RuntimeException("(添加延时队列失败)");
        }
    }

    /**
     * 获取延迟队列
     *
     * @param queueCode
     * @param 
     * @return
     * @throws InterruptedException
     */
    public <T> T getDelayQueue(String queueCode) throws InterruptedException {
        RBlockingDeque<Map> blockingDeque = redissonClient.getBlockingDeque(queueCode);
        T value = (T) blockingDeque.take();
        return value;
    }


    /**
     * 删除延迟队列
     *
     * @param queueCode
     * @param 
     * @return
     */
    public <T> T removeDelayQueue(T value, String queueCode) {
        RBlockingDeque<Object> blockingDeque = redissonClient.getBlockingDeque(queueCode);
        RDelayedQueue<Object> delayedQueue = redissonClient.getDelayedQueue(blockingDeque);
        delayedQueue.remove(value);
        return value;
    }
}

5、创建延迟队列业务枚举

import lombok.AllArgsConstructor;
import lombok.Getter;
import lombok.NoArgsConstructor;

/**
 * @author: Bigboss369
 * @Created: 2022/8/11/011
 */
@Getter
@NoArgsConstructor
@AllArgsConstructor
public enum  RedisDelayQueueEnum {
    pengyuyan("pengyuyan","心跳", "pengyuyan");
    /**
     * 延迟队列 Redis Key
     */
    private String code;

    /**
     * 中文描述
     */
    private String name;

    /**
     * 延迟队列具体业务实现的 Bean
     * 可通过 Spring 的上下文获取
     */
    private String beanId;
}

6、定义延迟队列执行器

/**
 * @author: Bigboss369
 * @Created: 2022/8/11/011
 */
public interface RedisDelayQueueHandle<T> {

    void execute(T t);

}

7、创建枚举中定义的Bean，并实现延迟队列执行器

import com.a.service.RedisDelayQueueHandle;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import java.util.Map;

@Component(value = "pengyuyan")
@Slf4j
public class PengYuYan implements RedisDelayQueueHandle<Map> {
    @Override
    public void execute(Map map) {
        log.info("收到心跳延迟消息map:" + map);
    }
}

8、创建延迟队列消费线程，项目启动完成后开启

import com.a.service.RedisDelayQueueHandle;
import com.a.util.RedisDelayQueueUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.CommandLineRunner;
import org.springframework.stereotype.Component;

/**
 * @author bigboss
 */
@Slf4j
@Component
public class RedisDelayQueueRunner implements CommandLineRunner {

    @Autowired
    private RedisDelayQueueUtil redisDelayQueueUtil;

    @Override
    public void run(String... args) {
        RedisDelayQueueEnum[] queueEnums = RedisDelayQueueEnum.values();
        for (RedisDelayQueueEnum queueEnum : queueEnums) {
            new Thread(() -> {
                try {
                    while (true) {
                        Object value = redisDelayQueueUtil.getDelayQueue(queueEnum.getCode());
                        log.debug("----value-->" + value);
                        RedisDelayQueueHandle redisDelayQueueHandle = SpringUtil.getBean(queueEnum.getBeanId());
                        redisDelayQueueHandle.execute(value);
                    }
                } catch (InterruptedException e) {
                    log.error("(Redis延迟队列异常中断) {}", e.getMessage());
                }
            }).start();
        }
        log.info("(Redis延迟队列启动成功)");
    }
}

9、创建一个测试接口，模拟添加延迟队列

发送心跳到队列里

类成功接收到心跳包