iailab-framework/iailab-common-websocket/src/main/java/com/iailab/framework/websocket/core/sender/kafka/KafkaWebSocketMessageConsumer.java

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package com.iailab.framework.websocket.core.sender.kafka;

import lombok.RequiredArgsConstructor;
import org.springframework.amqp.rabbit.annotation.RabbitHandler;
import org.springframework.kafka.annotation.KafkaListener;

/**
 * {@link KafkaWebSocketMessage} 广播消息的消费者，真正把消息发送出去
 *
 * @author iailab
 */
@RequiredArgsConstructor
public class KafkaWebSocketMessageConsumer {

    private final KafkaWebSocketMessageSender rabbitMQWebSocketMessageSender;

    @RabbitHandler
    @KafkaListener(
            topics = "${iailab.websocket.sender-kafka.topic}",
            // 在 Group 上，使用 UUID 生成其后缀。这样，启动的 Consumer 的 Group 不同，以达到广播消费的目的
            groupId = "${iailab.websocket.sender-kafka.consumer-group}" + "-" + "#{T(java.util.UUID).randomUUID()}")
    public void onMessage(KafkaWebSocketMessage message) {
        rabbitMQWebSocketMessageSender.send(message.getSessionId(),
                message.getUserType(), message.getUserId(),
                message.getMessageType(), message.getMessageContent());
    }

}