feat: 增强Kafka消费者配置并完善action_type分类逻辑

- 支持多实例Kafka消费者，增加并发处理能力
- 新增Kafka配置参数：最大飞行中消息数、获取字节数、等待时间等
- 完善action_type分类逻辑，根据dev_type映射为"用户操作"或"设备回路状态"
- 临时支持hex格式udp_raw自动转换为base64存储
- 增加extra字段支持上游扩展数据传递
- 优化数据库初始化脚本查找路径
- 更新PM2配置，修改应用名称和端口
- 清理开发环境日志文件，将dist目录加入.gitignore
- 更新相关文档说明

bls-rcu-action-backend/src/index.js

@@ -3,7 +3,7 @@ import { config } from './config/config.js';
 import dbManager from './db/databaseManager.js';
 import dbInitializer from './db/initializer.js';
 import partitionManager from './db/partitionManager.js';
-import { createKafkaConsumer } from './kafka/consumer.js';
+import { createKafkaConsumers } from './kafka/consumer.js';
 import { processKafkaMessage } from './processor/index.js';
 import { createRedisClient } from './redis/redisClient.js';
 import { RedisIntegration } from './redis/redisIntegration.js';
@@ -79,13 +79,23 @@ const bootstrap = async () => {
       const messageKey = Buffer.isBuffer(message.key)
         ? message.key.toString('utf8')
         : message.key;
-      logger.info('Kafka message received', {
-        topic: message.topic,
-        partition: message.partition,
-        offset: message.offset,
-        key: messageKey,
-        value: messageValue
-      });
+      if (config.kafka.logMessages) {
+        logger.info('Kafka message received', {
+          topic: message.topic,
+          partition: message.partition,
+          offset: message.offset,
+          key: messageKey,
+          value: messageValue
+        });
+      } else {
+        logger.info('Kafka message received', {
+          topic: message.topic,
+          partition: message.partition,
+          offset: message.offset,
+          key: messageKey,
+          valueLength: typeof messageValue === 'string' ? messageValue.length : null
+        });
+      }
       const inserted = await processKafkaMessage({ message, dbManager, config });
       metricCollector.increment('db_inserted');
       logger.info('Kafka message processed', { inserted });
@@ -143,7 +153,7 @@ const bootstrap = async () => {
     }
   };
 
-  const consumer = createKafkaConsumer({
+  const consumers = createKafkaConsumers({
     kafkaConfig: config.kafka,
     onMessage: handleMessage,
     onError: handleError
@@ -170,9 +180,9 @@ const bootstrap = async () => {
     
     try {
       // 1. Close Kafka Consumer
-      if (consumer) {
-        await new Promise((resolve) => consumer.close(true, resolve));
-        logger.info('Kafka consumer closed');
+      if (consumers && consumers.length > 0) {
+        await Promise.all(consumers.map(c => new Promise((resolve) => c.close(true, resolve))));
+        logger.info('Kafka consumer closed', { count: consumers.length });
       }
 
       // 2. Stop Redis Heartbeat (if method exists, otherwise just close client)