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@@ -1,21 +1,22 @@
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package cn.iocoder.dashboard.framework.redis.config;
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-import cn.hutool.core.net.NetUtil;
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+import cn.hutool.system.SystemUtil;
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import cn.iocoder.dashboard.framework.redis.core.pubsub.AbstractChannelMessageListener;
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import cn.iocoder.dashboard.framework.redis.core.stream.AbstractStreamMessageListener;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.data.redis.connection.RedisConnectionFactory;
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-import org.springframework.data.redis.connection.stream.*;
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+import org.springframework.data.redis.connection.stream.Consumer;
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+import org.springframework.data.redis.connection.stream.ObjectRecord;
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+import org.springframework.data.redis.connection.stream.ReadOffset;
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+import org.springframework.data.redis.connection.stream.StreamOffset;
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import org.springframework.data.redis.core.RedisTemplate;
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import org.springframework.data.redis.listener.ChannelTopic;
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import org.springframework.data.redis.listener.RedisMessageListenerContainer;
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import org.springframework.data.redis.serializer.RedisSerializer;
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import org.springframework.data.redis.stream.StreamMessageListenerContainer;
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-import org.springframework.util.ErrorHandler;
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-import java.time.Duration;
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import java.util.List;
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/**
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@@ -25,6 +26,9 @@ import java.util.List;
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@Slf4j
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public class RedisConfig {
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+ /**
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+ * 创建 RedisTemplate Bean,使用 JSON 序列化方式
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+ */
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@Bean
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public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory factory) {
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// 创建 RedisTemplate 对象
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@@ -33,11 +37,16 @@ public class RedisConfig {
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template.setConnectionFactory(factory);
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// 使用 String 序列化方式,序列化 KEY 。
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template.setKeySerializer(RedisSerializer.string());
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+ template.setHashKeySerializer(RedisSerializer.string());
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// 使用 JSON 序列化方式(库是 Jackson ),序列化 VALUE 。
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template.setValueSerializer(RedisSerializer.json());
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+ template.setHashValueSerializer(RedisSerializer.json());
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return template;
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}
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+ /**
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+ * 创建 Redis Pub/Sub 广播消费的容器
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+ */
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@Bean
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public RedisMessageListenerContainer redisMessageListenerContainer(RedisConnectionFactory factory,
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List<AbstractChannelMessageListener<?>> listeners) {
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@@ -54,52 +63,48 @@ public class RedisConfig {
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return container;
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}
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+ /**
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+ * 创建 Redis Stream 集群消费的容器
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+ *
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+ * Redis Stream 的 xreadgroup 命令:https://www.geek-book.com/src/docs/redis/redis/redis.io/commands/xreadgroup.html
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+ */
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@Bean(initMethod = "start", destroyMethod = "stop")
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- public StreamMessageListenerContainer<String, ObjectRecord<String, String>> redisStreamMessageListenerContainer(
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- RedisConnectionFactory factory, List<AbstractStreamMessageListener<?>> listeners) {
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- // 创建配置对象
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- StreamMessageListenerContainer.StreamMessageListenerContainerOptions<String, ObjectRecord<String, String>>
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- streamMessageListenerContainerOptions = StreamMessageListenerContainer.StreamMessageListenerContainerOptions
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- .builder()
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- // 一次性最多拉取多少条消息
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- .batchSize(10)
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- // 执行消息轮询的执行器
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- // .executor(this.threadPoolTaskExecutor)
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- // 消息消费异常的handler
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- .errorHandler(new ErrorHandler() {
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- @Override
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- public void handleError(Throwable t) {
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- // throw new RuntimeException(t);
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- t.printStackTrace();
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- }
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- })
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- // 超时时间,设置为0,表示不超时(超时后会抛出异常)
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- .pollTimeout(Duration.ZERO)
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- // 序列化器
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- .serializer(RedisSerializer.string())
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- .targetType(String.class)
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- .build();
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+ public StreamMessageListenerContainer<String, ObjectRecord<String, String>> redisStreamMessageListenerContainer(RedisTemplate<String, Object> redisTemplate,
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+ List<AbstractStreamMessageListener<?>> listeners) {
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+ // 第一步,创建 StreamMessageListenerContainer 容器
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+ // 创建 options 配置
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+ StreamMessageListenerContainer.StreamMessageListenerContainerOptions<String, ObjectRecord<String, String>> containerOptions =
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+ StreamMessageListenerContainer.StreamMessageListenerContainerOptions.builder()
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+ .batchSize(10) // 一次性最多拉取多少条消息
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+ .targetType(String.class) // 目标类型。统一使用 String,通过自己封装的 AbstractStreamMessageListener 去反序列化
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+ .build();
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+ // 创建 container 对象
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+ StreamMessageListenerContainer<String, ObjectRecord<String, String>> container = StreamMessageListenerContainer.create(
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+ redisTemplate.getRequiredConnectionFactory(), containerOptions);
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- // 根据配置对象创建监听容器对象
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- StreamMessageListenerContainer<String, ObjectRecord<String, String>> container = StreamMessageListenerContainer
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- .create(factory, streamMessageListenerContainerOptions);
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-
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- RedisTemplate<String, Object> redisTemplate = redisTemplate(factory);
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-
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- // 使用监听容器对象开始监听消费(使用的是手动确认方式)
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- String consumerName = NetUtil.getLocalHostName(); // TODO 需要优化下,晚点参考下 rocketmq consumer 的
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- for (AbstractStreamMessageListener<?> listener : listeners) {
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+ // 第二步,注册监听器,消费对应的 Stream 主题
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+ String consumerName = buildConsumerName();
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+ listeners.forEach(listener -> {
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+ // 创建 listener 对应的消费者分组
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try {
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redisTemplate.opsForStream().createGroup(listener.getStreamKey(), listener.getGroup());
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- } catch (Exception ignore) {
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-// ignore.printStackTrace();
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- }
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-
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- container.receive(Consumer.from(listener.getGroup(), consumerName),
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- StreamOffset.create(listener.getStreamKey(), ReadOffset.lastConsumed()), listener);
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- }
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-
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+ } catch (Exception ignore) {}
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+ // 创建 Consumer 对象
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+ Consumer consumer = Consumer.from(listener.getGroup(), consumerName);
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+ // 设置 Consumer 消费进度,以最小消费进度为准
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+ StreamOffset<String> streamOffset = StreamOffset.create(listener.getStreamKey(), ReadOffset.lastConsumed());
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+ // 设置 Consumer 监听
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+ StreamMessageListenerContainer.StreamReadRequestBuilder<String> builder = StreamMessageListenerContainer.StreamReadRequest
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+ .builder(streamOffset).consumer(consumer)
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+ .autoAcknowledge(false) // 不自动 ack
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+ .cancelOnError(throwable -> false); // 默认配置,发生异常就取消消费,显然不符合预期;因此,我们设置为 false
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+ container.register(builder.build(), listener);
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+ });
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return container;
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}
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+ private static String buildConsumerName() {
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+ return String.format("%s@%d", SystemUtil.getHostInfo().getAddress(), SystemUtil.getCurrentPID());
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+ }
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+
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}
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