redis stream restTemplate消息监听队列框架搭建

整体思路

        1. pom增加redis依赖；

        2. 消息监听器，实现StreamListener接口，处理消息到达逻辑；

        3. 将消息订阅bean及监听器注册到配置中；

1. pom

    4.0.0

    
        org.springframework.boot
        spring-boot-starter-parent
        2.7.6
    






    
            org.springframework.boot
            spring-boot-starter-data-redis
        

2. 消息监听器实现代码

package cn.thuniwhir.fileserver.redis;

import com.alibaba.fastjson.JSON;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.data.redis.connection.stream.MapRecord;
import org.springframework.data.redis.stream.StreamListener;
import org.springframework.stereotype.Component;

import java.util.concurrent.LinkedBlockingQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

/**
 * @Description: TODO
 **/
@Component
public class RedisMQListener implements StreamListener> {

    private static final Logger log = LoggerFactory.getLogger(RedisMQListener.class);

    // 创建一个线程池
    private static final ThreadPoolExecutor threadPoolExecutor = new ThreadPoolExecutor(
            10, 20, 0L, TimeUnit.MILLISECONDS, new LinkedBlockingQueue<>());
    @Override
    public void onMessage(MapRecord message) {
        // 异步处理消息
        threadPoolExecutor.execute(()->{
            System.out.println(Thread.currentThread().getName() + ":接收到的消息：" + message.getId() + ";" + JSON.toJSONString(message.getValue()));
        });

    }
}

3. redis订阅bean及监听器注册

package cn.thuniwhir.fileserver.redis;

import cn.thuniwhir.fileserver.context.Constants;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.connection.stream.Consumer;
import org.springframework.data.redis.connection.stream.ReadOffset;
import org.springframework.data.redis.connection.stream.StreamInfo;
import org.springframework.data.redis.connection.stream.StreamOffset;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.stream.StreamMessageListenerContainer;
import org.springframework.data.redis.stream.Subscription;

import java.time.Duration;
import java.util.stream.Collectors;

/**
 * @Description: TODO
 **/
@Configuration
public class RedisMQConfig {

    @Autowired
    private RedisMQListener redisMQListener;

    @Autowired
    private RedisUtils redisUtils;

    private static RedisTemplate redisTemplate;
    private static final Logger log = LoggerFactory.getLogger(RedisMQConfig.class);

    public RedisMQConfig(RedisTemplate redisTemplate) {
        this.redisTemplate = redisTemplate;
    }

    @Bean
    public Subscription subscription(RedisConnectionFactory redisConnectionFactory) {
        if (redisUtils.hasKey(Constants.FILE_MQ_DISK_THRESHOLD_QUENAME)) {
            StreamInfo.XInfoGroups xInfoGroups = redisTemplate.opsForStream().groups(Constants.FILE_MQ_DISK_THRESHOLD_QUENAME);
            if (xInfoGroups.isEmpty()) {
                redisTemplate.opsForStream().createGroup(Constants.FILE_MQ_DISK_THRESHOLD_QUENAME, Constants.FILE_MQ_DISK_THRESHOLD_GROUPNAME);
            } else {
                if (xInfoGroups.stream().filter(xInfoGroups1 -> xInfoGroups1.groupName().equals(Constants.FILE_MQ_DISK_THRESHOLD_GROUPNAME)).collect(Collectors.toList()).isEmpty()) {
                    redisTemplate.opsForStream().createGroup(Constants.FILE_MQ_DISK_THRESHOLD_QUENAME, Constants.FILE_MQ_DISK_THRESHOLD_GROUPNAME);
                }
            }
        } else {
            redisTemplate.opsForStream().createGroup(Constants.FILE_MQ_DISK_THRESHOLD_QUENAME, Constants.FILE_MQ_DISK_THRESHOLD_GROUPNAME);
        }
        StreamMessageListenerContainer.StreamMessageListenerContainerOptions options = StreamMessageListenerContainer.StreamMessageListenerContainerOptions.builder()
                .pollTimeout(Duration.ofSeconds(1)).build();
        StreamMessageListenerContainer streamMessageListenerContainer = StreamMessageListenerContainer.create(redisConnectionFactory, options);
        Subscription subscription = streamMessageListenerContainer.receiveAutoAck(Consumer.from(Constants.FILE_MQ_DISK_THRESHOLD_GROUPNAME, Constants.FILE_MQ_DISK_THRESHOLD_CONSUMER), StreamOffset.create(Constants.FILE_MQ_DISK_THRESHOLD_QUENAME, ReadOffset.lastConsumed()), redisMQListener);
        streamMessageListenerContainer.start();
        return subscription;
    }

}

4. 测试生产消息 消息监听成功

4.1 生产消息

@RequestMapping("/produceMessage")
    public JSONObject produceMessage(@RequestBody JSONObject jsonObject) {
        String key = jsonObject.getString("key");
        String value = jsonObject.getString("value");
        MapRecord mapRecord = MapRecord.create(Constants.FILE_MQ_DISK_THRESHOLD_QUENAME, Collections.singletonMap(key, value));
        redisTemplate.opsForStream().add(mapRecord);
        System.out.println("produceMessage Thread Name:" + Thread.currentThread().getName());
        return formatResult(null);
    }

4.2 消息监听器监听消息到达 代码见第二节

4.3 测试结果