feat(count): 实现评论发布后异步更新笔记评论数功能

- 新增 CountPublishCommentMqDTO 用于传输评论计数消息
- 在评论服务中添加异步发送评论计数消息逻辑
- 新建 CountNoteCommentConsumer 消费评论计数消息并批量更新笔记评论数
- 扩展 t_comment 表结构，新增 child_comment_total 字段
- 更新 MQ 常量配置，添加评论计数相关 Topic 定义
- 调整 LIKE/UNLIKE 和 COLLECT/UNCOLLECT 消费者中的注解使用（防止循环依赖）
- 修改 gateApi.http 中的测试用例内容以适配新功能

han-note-count/han-note-count-biz/src/main/java/com/hanserwei/hannote/count/biz/constant/MQConstants.java

@@ -2,6 +2,11 @@ package com.hanserwei.hannote.count.biz.constant;
 
 public interface MQConstants {
 
+    /**
+     * Topic: 笔记评论总数计数
+     */
+    String TOPIC_COUNT_NOTE_COMMENT = "CountNoteCommentTopic";
+
     /**
      * Topic: 计数 - 笔记点赞数
      */
@@ -32,21 +37,11 @@ public interface MQConstants {
      */
     String TOPIC_COUNT_FOLLOWING_2_DB = "CountFollowing2DBTopic";
 
-    /**
-     * Topic: 计数 - 笔记点赞数
-     */
-    String TOPIC_COUNT_NOTE_LIKE = "CountNoteLikeTopic";
-
     /**
      * Topic: 计数 - 笔记点赞数落库
      */
     String TOPIC_COUNT_NOTE_LIKE_2_DB = "CountNoteLike2DBTTopic";
 
-    /**
-     * Topic: 计数 - 笔记收藏数
-     */
-    String TOPIC_COUNT_NOTE_COLLECT = "CountNoteCollectTopic";
-
     /**
      * Topic: 计数 - 笔记收藏数落库
      */

han-note-count/han-note-count-biz/src/main/java/com/hanserwei/hannote/count/biz/consumer/CountNoteCommentConsumer.java

@@ -0,0 +1,76 @@
+package com.hanserwei.hannote.count.biz.consumer;
+
+import cn.hutool.core.collection.CollUtil;
+import com.github.phantomthief.collection.BufferTrigger;
+import com.google.common.collect.Lists;
+import com.hanserwei.framework.common.utils.JsonUtils;
+import com.hanserwei.hannote.count.biz.constant.MQConstants;
+import com.hanserwei.hannote.count.biz.domain.mapper.NoteCountDOMapper;
+import com.hanserwei.hannote.count.biz.model.dto.CountPublishCommentMqDTO;
+import jakarta.annotation.Resource;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.rocketmq.spring.annotation.RocketMQMessageListener;
+import org.apache.rocketmq.spring.core.RocketMQListener;
+import org.springframework.stereotype.Component;
+
+import java.time.Duration;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+@Component
+@RocketMQMessageListener(consumerGroup = "han_note_group_" + MQConstants.TOPIC_COUNT_NOTE_COMMENT, // Group 组
+        topic = MQConstants.TOPIC_COUNT_NOTE_COMMENT // 主题 Topic
+)
+@Slf4j
+public class CountNoteCommentConsumer implements RocketMQListener<String> {
+
+    @Resource
+    private NoteCountDOMapper noteCountDOMapper;
+
+    private final BufferTrigger<String> bufferTrigger = BufferTrigger.<String>batchBlocking()
+            .bufferSize(50000) // 缓存队列的最大容量
+            .batchSize(1000)   // 一批次最多聚合 1000 条
+            .linger(Duration.ofSeconds(1)) // 多久聚合一次（1s 一次）
+            .setConsumerEx(this::consumeMessage) // 设置消费者方法
+            .build();
+
+    @Override
+    public void onMessage(String body) {
+        // 往 bufferTrigger 中添加元素
+        bufferTrigger.enqueue(body);
+    }
+
+    private void consumeMessage(List<String> bodys) {
+        log.info("==> 【笔记评论数】聚合消息, size: {}", bodys.size());
+        log.info("==> 【笔记评论数】聚合消息, {}", JsonUtils.toJsonString(bodys));
+
+        // 将聚合后的消息体 Json 转 List<CountPublishCommentMqDTO>
+        List<CountPublishCommentMqDTO> countPublishCommentMqDTOList = Lists.newArrayList();
+        bodys.forEach(body -> {
+            try {
+                List<CountPublishCommentMqDTO> list = JsonUtils.parseList(body, CountPublishCommentMqDTO.class);
+                countPublishCommentMqDTOList.addAll(list);
+            } catch (Exception e) {
+                log.error("", e);
+            }
+        });
+
+        // 按笔记 ID 进行分组
+        Map<Long, List<CountPublishCommentMqDTO>> groupMap = countPublishCommentMqDTOList.stream()
+                .collect(Collectors.groupingBy(CountPublishCommentMqDTO::getNoteId));
+
+        // 循环分组字典
+        for (Map.Entry<Long, List<CountPublishCommentMqDTO>> entry : groupMap.entrySet()) {
+            // 笔记 ID
+            Long noteId = entry.getKey();
+            // 评论数
+            int count = CollUtil.size(entry.getValue());
+
+            // 若评论数大于零，则执行更新操作：累加评论总数
+            if (count > 0) {
+                noteCountDOMapper.insertOrUpdateCommentTotalByNoteId(count, noteId);
+            }
+        }
+    }
+}

han-note-count/han-note-count-biz/src/main/java/com/hanserwei/hannote/count/biz/domain/mapper/NoteCountDOMapper.java

@@ -25,4 +25,13 @@ public interface NoteCountDOMapper extends BaseMapper<NoteCountDO> {
      * @return 影响行数
      */
     int insertOrUpdateCollectTotalByNoteId(@Param("count") Integer count, @Param("noteId") Long noteId);
+
+    /**
+     * 添加记录或更新笔记评论数
+     *
+     * @param count  评论数
+     * @param noteId 笔记ID
+     * @return 影响行数
+     */
+    int insertOrUpdateCommentTotalByNoteId(@Param("count") int count, @Param("noteId") Long noteId);
 }

han-note-count/han-note-count-biz/src/main/java/com/hanserwei/hannote/count/biz/model/dto/CountPublishCommentMqDTO.java

@@ -0,0 +1,24 @@
+package com.hanserwei.hannote.count.biz.model.dto;
+
+import lombok.AllArgsConstructor;
+import lombok.Builder;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+@Builder
+public class CountPublishCommentMqDTO {
+
+    /**
+     * 笔记 ID
+     */
+    private Long noteId;
+
+    /**
+     * 评论 ID
+     */
+    private Long commentId;
+
+}

han-note-count/han-note-count-biz/src/main/resources/mapperxml/NoteCountDOMapper.xml

@@ -26,4 +26,10 @@
       VALUES (#{noteId}, #{count})
       ON DUPLICATE KEY UPDATE collect_total = collect_total + (#{count});
   </insert>
+
+    <insert id="insertOrUpdateCommentTotalByNoteId" parameterType="map">
+        INSERT INTO t_note_count (note_id, comment_total)
+        VALUES (#{noteId}, #{count})
+        ON DUPLICATE KEY UPDATE comment_total = comment_total + (#{count});
+    </insert>
 </mapper>