feat: 初始化 bls-onoffline-backend 项目基础结构

添加 Kafka 消费者、数据库写入、Redis 集成等核心模块，实现设备上下线事件处理 - 创建项目基础目录结构与配置文件 - 实现 Kafka 消费逻辑与手动提交偏移量 - 添加 PostgreSQL 数据库连接与分区表管理 - 集成 Redis 用于错误队列和项目心跳 - 包含数据处理逻辑，区分重启与非重启数据 - 提供数据库初始化脚本与分区创建工具 - 添加单元测试与代码校验脚本
2026-02-04 17:51:50 +08:00
commit a8c7cf74e6
41 changed files with 6760 additions and 0 deletions
--- a/bls-onoffline-backend/.env
+++ b/bls-onoffline-backend/.env
@@ -0,0 +1,37 @@
+KAFKA_BROKERS=kafka.blv-oa.com:9092
+KAFKA_CLIENT_ID=bls-onoffline-producer
+KAFKA_GROUP_ID=bls-onoffline-consumer
+KAFKA_TOPICS=blwlog4Nodejs-rcu-onoffline-topic-0
+KAFKA_AUTO_COMMIT=false
+KAFKA_AUTO_COMMIT_INTERVAL_MS=5000
+KAFKA_SASL_ENABLED=true
+KAFKA_SASL_MECHANISM=plain
+KAFKA_SASL_USERNAME=blwmomo
+KAFKA_SASL_PASSWORD=blwmomo
+KAFKA_SSL_ENABLED=false
+KAFKA_CONSUMER_INSTANCES=6
+KAFKA_MAX_IN_FLIGHT=50
+KAFKA_FETCH_MAX_BYTES=10485760
+KAFKA_FETCH_MAX_WAIT_MS=100
+KAFKA_FETCH_MIN_BYTES=1
+
+POSTGRES_HOST=10.8.8.109
+POSTGRES_PORT=5433
+POSTGRES_DATABASE=log_platform
+POSTGRES_USER=log_admin
+POSTGRES_PASSWORD=YourActualStrongPasswordForPostgres!
+POSTGRES_MAX_CONNECTIONS=6
+POSTGRES_IDLE_TIMEOUT_MS=30000
+DB_SCHEMA=onoffline
+DB_TABLE=onoffline_record
+
+PORT=3001
+LOG_LEVEL=info
+
+# Redis connection
+REDIS_HOST=10.8.8.109
+REDIS_PORT=6379
+REDIS_PASSWORD=
+REDIS_DB=15
+REDIS_CONNECT_TIMEOUT_MS=5000
+REDIS_PROJECT_NAME=bls-onoffline
--- a/bls-onoffline-backend/.env.example
+++ b/bls-onoffline-backend/.env.example
@@ -0,0 +1,31 @@
+# Server Configuration
+PORT=3001
+NODE_ENV=development
+
+# Kafka Configuration
+KAFKA_BROKERS=localhost:9092
+KAFKA_TOPIC=blwlog4Nodejs-rcu-onoffline-topic
+KAFKA_GROUP_ID=bls-onoffline-group
+KAFKA_CLIENT_ID=bls-onoffline-client
+KAFKA_CONSUMER_INSTANCES=1
+# KAFKA_SASL_USERNAME=
+# KAFKA_SASL_PASSWORD=
+# KAFKA_SASL_MECHANISM=plain
+
+# Database Configuration (PostgreSQL)
+DB_HOST=localhost
+DB_PORT=5432
+DB_USER=postgres
+DB_PASSWORD=password
+DB_DATABASE=log_platform
+DB_SCHEMA=public
+DB_TABLE=onoffline_record
+DB_MAX_CONNECTIONS=10
+
+# Redis Configuration
+REDIS_HOST=localhost
+REDIS_PORT=6379
+REDIS_PASSWORD=
+REDIS_DB=0
+REDIS_PROJECT_NAME=bls-onoffline
+REDIS_API_BASE_URL=http://localhost:3001
--- a/bls-onoffline-backend/AGENTS.md
+++ b/bls-onoffline-backend/AGENTS.md
@@ -0,0 +1,18 @@
+<!-- OPENSPEC:START -->
+# OpenSpec Instructions
+
+These instructions are for AI assistants working in this project.
+
+Always open `@/openspec/AGENTS.md` when the request:
+- Mentions planning or proposals (words like proposal, spec, change, plan)
+- Introduces new capabilities, breaking changes, architecture shifts, or big performance/security work
+- Sounds ambiguous and you need the authoritative spec before coding
+
+Use `@/openspec/AGENTS.md` to learn:
+- How to create and apply change proposals
+- Spec format and conventions
+- Project structure and guidelines
+
+Keep this managed block so 'openspec update' can refresh the instructions.
+
+<!-- OPENSPEC:END -->
--- a/bls-onoffline-backend/README.md
+++ b/bls-onoffline-backend/README.md
@@ -0,0 +1,24 @@
+bls-onoffline-backend
+
+安装与运行
+- Node.js 22+
+- npm install
+- npm run dev
+
+构建与测试
+- npm run build
+- npm run test
+- npm run lint
+
+规范校验
+- npm run spec:lint
+- npm run spec:validate
+
+环境变量
+- 复制 .env.example 为 .env 并按实际环境配置
+
+数据库初始化
+- 启动时自动执行 scripts/init_db.sql 并预创建未来 30 天分区
+
+规范说明
+- 规格文件位于 spec/onoffline-spec.md
--- a/bls-onoffline-backend/dist/index.js
+++ b/bls-onoffline-backend/dist/index.js
@@ -0,0 +1,857 @@
+import cron from "node-cron";
+import dotenv from "dotenv";
+import pg from "pg";
+import fs from "fs";
+import path from "path";
+import { fileURLToPath } from "url";
+import kafka from "kafka-node";
+import { randomUUID } from "crypto";
+import { z } from "zod";
+import { createClient } from "redis";
+dotenv.config();
+const parseNumber = (value, defaultValue) => {
+  const parsed = Number(value);
+  return Number.isFinite(parsed) ? parsed : defaultValue;
+};
+const parseList = (value) => (value || "").split(",").map((item) => item.trim()).filter(Boolean);
+const config = {
+  env: process.env.NODE_ENV || "development",
+  port: parseNumber(process.env.PORT, 3001),
+  kafka: {
+    brokers: parseList(process.env.KAFKA_BROKERS),
+    topic: process.env.KAFKA_TOPIC || process.env.KAFKA_TOPICS || "blwlog4Nodejs-rcu-onoffline-topic",
+    groupId: process.env.KAFKA_GROUP_ID || "bls-onoffline-group",
+    clientId: process.env.KAFKA_CLIENT_ID || "bls-onoffline-client",
+    consumerInstances: parseNumber(process.env.KAFKA_CONSUMER_INSTANCES, 1),
+    maxInFlight: parseNumber(process.env.KAFKA_MAX_IN_FLIGHT, 50),
+    fetchMaxBytes: parseNumber(process.env.KAFKA_FETCH_MAX_BYTES, 10 * 1024 * 1024),
+    fetchMinBytes: parseNumber(process.env.KAFKA_FETCH_MIN_BYTES, 1),
+    fetchMaxWaitMs: parseNumber(process.env.KAFKA_FETCH_MAX_WAIT_MS, 100),
+    autoCommitIntervalMs: parseNumber(process.env.KAFKA_AUTO_COMMIT_INTERVAL_MS, 5e3),
+    logMessages: process.env.KAFKA_LOG_MESSAGES === "true",
+    sasl: process.env.KAFKA_SASL_USERNAME && process.env.KAFKA_SASL_PASSWORD ? {
+      mechanism: process.env.KAFKA_SASL_MECHANISM || "plain",
+      username: process.env.KAFKA_SASL_USERNAME,
+      password: process.env.KAFKA_SASL_PASSWORD
+    } : void 0
+  },
+  db: {
+    host: process.env.DB_HOST || process.env.POSTGRES_HOST || "localhost",
+    port: parseNumber(process.env.DB_PORT || process.env.POSTGRES_PORT, 5432),
+    user: process.env.DB_USER || process.env.POSTGRES_USER || "postgres",
+    password: process.env.DB_PASSWORD || process.env.POSTGRES_PASSWORD || "",
+    database: process.env.DB_DATABASE || process.env.POSTGRES_DATABASE || "log_platform",
+    max: parseNumber(process.env.DB_MAX_CONNECTIONS || process.env.POSTGRES_MAX_CONNECTIONS, 10),
+    ssl: process.env.DB_SSL === "true" ? { rejectUnauthorized: false } : void 0,
+    schema: process.env.DB_SCHEMA || "onoffline",
+    table: process.env.DB_TABLE || "onoffline_record"
+  },
+  redis: {
+    host: process.env.REDIS_HOST || "localhost",
+    port: parseNumber(process.env.REDIS_PORT, 6379),
+    password: process.env.REDIS_PASSWORD || void 0,
+    db: parseNumber(process.env.REDIS_DB, 0),
+    projectName: process.env.REDIS_PROJECT_NAME || "bls-onoffline",
+    apiBaseUrl: process.env.REDIS_API_BASE_URL || `http://localhost:${parseNumber(process.env.PORT, 3001)}`
+  }
+};
+const format = (level, message, context) => {
+  const payload = {
+    level,
+    message,
+    timestamp: Date.now(),
+    ...context ? { context } : {}
+  };
+  return JSON.stringify(payload);
+};
+const logger$1 = {
+  info(message, context) {
+    process.stdout.write(`${format("info", message, context)}
+`);
+  },
+  error(message, context) {
+    process.stderr.write(`${format("error", message, context)}
+`);
+  }
+};
+const { Pool } = pg;
+const columns = [
+  "guid",
+  "ts_ms",
+  "write_ts_ms",
+  "hotel_id",
+  "mac",
+  "device_id",
+  "room_id",
+  "ip",
+  "current_status",
+  "launcher_version",
+  "reboot_reason"
+];
+class DatabaseManager {
+  constructor(dbConfig) {
+    this.pool = new Pool({
+      host: dbConfig.host,
+      port: dbConfig.port,
+      user: dbConfig.user,
+      password: dbConfig.password,
+      database: dbConfig.database,
+      max: dbConfig.max,
+      ssl: dbConfig.ssl
+    });
+  }
+  async insertRows({ schema, table, rows }) {
+    if (!rows || rows.length === 0) {
+      return;
+    }
+    const values = [];
+    const placeholders = rows.map((row, rowIndex) => {
+      const offset = rowIndex * columns.length;
+      columns.forEach((column) => {
+        values.push(row[column] ?? null);
+      });
+      const params = columns.map((_, columnIndex) => `$${offset + columnIndex + 1}`);
+      return `(${params.join(", ")})`;
+    });
+    const statement = `
+      INSERT INTO ${schema}.${table} (${columns.join(", ")}) 
+      VALUES ${placeholders.join(", ")}
+      ON CONFLICT DO NOTHING
+    `;
+    try {
+      await this.pool.query(statement, values);
+    } catch (error) {
+      logger$1.error("Database insert failed", {
+        error: error?.message,
+        schema,
+        table,
+        rowsLength: rows.length
+      });
+      throw error;
+    }
+  }
+  async checkConnection() {
+    let client;
+    try {
+      const connectPromise = this.pool.connect();
+      const timeoutPromise = new Promise((_, reject) => {
+        setTimeout(() => reject(new Error("Connection timeout")), 5e3);
+      });
+      try {
+        client = await Promise.race([connectPromise, timeoutPromise]);
+      } catch (raceError) {
+        connectPromise.then((c) => c.release()).catch(() => {
+        });
+        throw raceError;
+      }
+      await client.query("SELECT 1");
+      return true;
+    } catch (err) {
+      logger$1.error("Database check connection failed", { error: err.message });
+      return false;
+    } finally {
+      if (client) {
+        client.release();
+      }
+    }
+  }
+  async close() {
+    await this.pool.end();
+  }
+}
+const dbManager = new DatabaseManager(config.db);
+class PartitionManager {
+  /**
+   * Calculate the start and end timestamps (milliseconds) for a given date.
+   * @param {Date} date - The date to calculate for.
+   * @returns {Object} { startMs, endMs, partitionSuffix }
+   */
+  getPartitionInfo(date) {
+    const yyyy = date.getFullYear();
+    const mm = String(date.getMonth() + 1).padStart(2, "0");
+    const dd = String(date.getDate()).padStart(2, "0");
+    const partitionSuffix = `${yyyy}${mm}${dd}`;
+    const start = new Date(date);
+    start.setHours(0, 0, 0, 0);
+    const startMs = start.getTime();
+    const end = new Date(date);
+    end.setDate(end.getDate() + 1);
+    end.setHours(0, 0, 0, 0);
+    const endMs = end.getTime();
+    return { startMs, endMs, partitionSuffix };
+  }
+  /**
+   * Ensure partitions exist for the past M days and next N days.
+   * @param {number} daysAhead - Number of days to pre-create.
+   * @param {number} daysBack - Number of days to look back.
+   */
+  async ensurePartitions(daysAhead = 30, daysBack = 15) {
+    const client = await dbManager.pool.connect();
+    try {
+      logger$1.info(`Starting partition check for the past ${daysBack} days and next ${daysAhead} days...`);
+      console.log(`Starting partition check for the past ${daysBack} days and next ${daysAhead} days...`);
+      const now = /* @__PURE__ */ new Date();
+      for (let i = -daysBack; i < daysAhead; i++) {
+        const targetDate = new Date(now);
+        targetDate.setDate(now.getDate() + i);
+        const { startMs, endMs, partitionSuffix } = this.getPartitionInfo(targetDate);
+        const schema = config.db.schema;
+        const table = config.db.table;
+        const partitionName = `${schema}.${table}_${partitionSuffix}`;
+        const checkSql = `
+          SELECT to_regclass($1) as exists;
+        `;
+        const checkRes = await client.query(checkSql, [partitionName]);
+        if (!checkRes.rows[0].exists) {
+          logger$1.info(`Creating partition ${partitionName} for range [${startMs}, ${endMs})`);
+          console.log(`Creating partition ${partitionName} for range [${startMs}, ${endMs})`);
+          const createSql = `
+            CREATE TABLE IF NOT EXISTS ${partitionName}
+            PARTITION OF ${schema}.${table}
+            FOR VALUES FROM (${startMs}) TO (${endMs});
+          `;
+          await client.query(createSql);
+        }
+      }
+      logger$1.info("Partition check completed.");
+    } catch (err) {
+      logger$1.error("Error ensuring partitions:", err);
+      throw err;
+    } finally {
+      client.release();
+    }
+  }
+}
+const partitionManager = new PartitionManager();
+const __filename$1 = fileURLToPath(import.meta.url);
+const __dirname$1 = path.dirname(__filename$1);
+class DatabaseInitializer {
+  async initialize() {
+    logger$1.info("Starting database initialization check...");
+    await this.ensureDatabaseExists();
+    await this.ensureSchemaAndTable();
+    await partitionManager.ensurePartitions(30);
+    console.log("Database initialization completed successfully.");
+    logger$1.info("Database initialization completed successfully.");
+  }
+  async ensureDatabaseExists() {
+    const { host, port, user, password, database, ssl } = config.db;
+    console.log(`Checking if database '${database}' exists at ${host}:${port}...`);
+    const client = new pg.Client({
+      host,
+      port,
+      user,
+      password,
+      database: "postgres",
+      ssl: ssl ? { rejectUnauthorized: false } : false
+    });
+    try {
+      await client.connect();
+      const checkRes = await client.query(
+        `SELECT 1 FROM pg_database WHERE datname = $1`,
+        [database]
+      );
+      if (checkRes.rowCount === 0) {
+        logger$1.info(`Database '${database}' does not exist. Creating...`);
+        await client.query(`CREATE DATABASE "${database}"`);
+        console.log(`Database '${database}' created.`);
+        logger$1.info(`Database '${database}' created.`);
+      } else {
+        console.log(`Database '${database}' already exists.`);
+        logger$1.info(`Database '${database}' already exists.`);
+      }
+    } catch (err) {
+      logger$1.error("Error ensuring database exists:", err);
+      throw err;
+    } finally {
+      await client.end();
+    }
+  }
+  async ensureSchemaAndTable() {
+    const client = await dbManager.pool.connect();
+    try {
+      const sqlPathCandidates = [
+        path.resolve(process.cwd(), "scripts/init_db.sql"),
+        path.resolve(__dirname$1, "../scripts/init_db.sql"),
+        path.resolve(__dirname$1, "../../scripts/init_db.sql")
+      ];
+      const sqlPath = sqlPathCandidates.find((candidate) => fs.existsSync(candidate));
+      if (!sqlPath) {
+        throw new Error(`init_db.sql not found. Candidates: ${sqlPathCandidates.join(" | ")}`);
+      }
+      const sql = fs.readFileSync(sqlPath, "utf8");
+      console.log(`Executing init_db.sql from ${sqlPath}...`);
+      logger$1.info("Executing init_db.sql...");
+      await client.query(sql);
+      console.log("Schema and parent table initialized.");
+      logger$1.info("Schema and parent table initialized.");
+    } catch (err) {
+      logger$1.error("Error initializing schema and table:", err);
+      throw err;
+    } finally {
+      client.release();
+    }
+  }
+}
+const dbInitializer = new DatabaseInitializer();
+class OffsetTracker {
+  constructor() {
+    this.partitions = /* @__PURE__ */ new Map();
+  }
+  // Called when a message is received (before processing)
+  add(topic, partition, offset) {
+    const key = `${topic}-${partition}`;
+    if (!this.partitions.has(key)) {
+      this.partitions.set(key, []);
+    }
+    this.partitions.get(key).push({ offset, done: false });
+  }
+  // Called when a message is successfully processed
+  // Returns the next offset to commit (if any advancement is possible), or null
+  markDone(topic, partition, offset) {
+    const key = `${topic}-${partition}`;
+    const list = this.partitions.get(key);
+    if (!list) return null;
+    const item = list.find((i) => i.offset === offset);
+    if (item) {
+      item.done = true;
+    }
+    let lastDoneOffset = null;
+    let itemsRemoved = false;
+    while (list.length > 0 && list[0].done) {
+      lastDoneOffset = list[0].offset;
+      list.shift();
+      itemsRemoved = true;
+    }
+    if (itemsRemoved && lastDoneOffset !== null) {
+      return lastDoneOffset + 1;
+    }
+    return null;
+  }
+}
+const { ConsumerGroup } = kafka;
+const createOneConsumer = ({ kafkaConfig, onMessage, onError, instanceIndex }) => {
+  const kafkaHost = kafkaConfig.brokers.join(",");
+  const clientId = instanceIndex === 0 ? kafkaConfig.clientId : `${kafkaConfig.clientId}-${instanceIndex}`;
+  const id = `${clientId}-${process.pid}-${Date.now()}`;
+  const maxInFlight = Number.isFinite(kafkaConfig.maxInFlight) ? kafkaConfig.maxInFlight : 50;
+  let inFlight = 0;
+  const tracker = new OffsetTracker();
+  const consumer = new ConsumerGroup(
+    {
+      kafkaHost,
+      groupId: kafkaConfig.groupId,
+      clientId,
+      id,
+      fromOffset: "earliest",
+      protocol: ["roundrobin"],
+      outOfRangeOffset: "latest",
+      autoCommit: false,
+      autoCommitIntervalMs: kafkaConfig.autoCommitIntervalMs,
+      fetchMaxBytes: kafkaConfig.fetchMaxBytes,
+      fetchMinBytes: kafkaConfig.fetchMinBytes,
+      fetchMaxWaitMs: kafkaConfig.fetchMaxWaitMs,
+      sasl: kafkaConfig.sasl
+    },
+    kafkaConfig.topic
+  );
+  const tryResume = () => {
+    if (inFlight < maxInFlight && consumer.paused) {
+      consumer.resume();
+    }
+  };
+  consumer.on("message", (message) => {
+    inFlight += 1;
+    tracker.add(message.topic, message.partition, message.offset);
+    if (inFlight >= maxInFlight) {
+      consumer.pause();
+    }
+    Promise.resolve(onMessage(message)).then(() => {
+      const commitOffset = tracker.markDone(message.topic, message.partition, message.offset);
+      if (commitOffset !== null) {
+        consumer.sendOffsetCommitRequest([{
+          topic: message.topic,
+          partition: message.partition,
+          offset: commitOffset,
+          metadata: "m"
+        }], (err) => {
+          if (err) {
+            logger$1.error("Kafka commit failed", { error: err?.message, topic: message.topic, partition: message.partition, offset: commitOffset });
+          }
+        });
+      }
+    }).catch((error) => {
+      logger$1.error("Kafka message handling failed", { error: error?.message });
+      if (onError) {
+        onError(error, message);
+      }
+    }).finally(() => {
+      inFlight -= 1;
+      tryResume();
+    });
+  });
+  consumer.on("error", (error) => {
+    logger$1.error("Kafka consumer error", { error: error?.message });
+    if (onError) {
+      onError(error);
+    }
+  });
+  consumer.on("connect", () => {
+    logger$1.info(`Kafka Consumer connected`, {
+      groupId: kafkaConfig.groupId,
+      clientId
+    });
+  });
+  consumer.on("rebalancing", () => {
+    logger$1.info(`Kafka Consumer rebalancing`, {
+      groupId: kafkaConfig.groupId,
+      clientId
+    });
+  });
+  consumer.on("rebalanced", () => {
+    logger$1.info("Kafka Consumer rebalanced", { clientId, groupId: kafkaConfig.groupId });
+  });
+  consumer.on("error", (err) => {
+    logger$1.error("Kafka Consumer Error", { error: err.message });
+  });
+  consumer.on("offsetOutOfRange", (err) => {
+    logger$1.warn("Offset out of range", { error: err.message, topic: err.topic, partition: err.partition });
+  });
+  consumer.on("offsetOutOfRange", (error) => {
+    logger$1.warn(`Kafka Consumer offset out of range`, {
+      error: error?.message,
+      groupId: kafkaConfig.groupId,
+      clientId
+    });
+  });
+  consumer.on("close", () => {
+    logger$1.warn(`Kafka Consumer closed`, {
+      groupId: kafkaConfig.groupId,
+      clientId
+    });
+  });
+  return consumer;
+};
+const createKafkaConsumers = ({ kafkaConfig, onMessage, onError }) => {
+  const instances = Number.isFinite(kafkaConfig.consumerInstances) ? kafkaConfig.consumerInstances : 1;
+  const count = Math.max(1, instances);
+  return Array.from(
+    { length: count },
+    (_, idx) => createOneConsumer({ kafkaConfig, onMessage, onError, instanceIndex: idx })
+  );
+};
+const createGuid = () => randomUUID().replace(/-/g, "");
+const toNumber = (value) => {
+  if (value === void 0 || value === null || value === "") {
+    return value;
+  }
+  if (typeof value === "number") {
+    return value;
+  }
+  const parsed = Number(value);
+  return Number.isFinite(parsed) ? parsed : value;
+};
+const toStringAllowEmpty = (value) => {
+  if (value === void 0 || value === null) {
+    return value;
+  }
+  return String(value);
+};
+const kafkaPayloadSchema = z.object({
+  HotelCode: z.preprocess(toNumber, z.number()),
+  MAC: z.preprocess(toStringAllowEmpty, z.string().nullable()).optional().nullable(),
+  HostNumber: z.preprocess(toStringAllowEmpty, z.string().nullable()).optional().nullable(),
+  RoomNumber: z.preprocess(toStringAllowEmpty, z.string().nullable()).optional().nullable(),
+  EndPoint: z.preprocess(toStringAllowEmpty, z.string().nullable()).optional().nullable(),
+  CurrentStatus: z.preprocess(toStringAllowEmpty, z.string().nullable()).optional().nullable(),
+  CurrentTime: z.preprocess(toStringAllowEmpty, z.string().nullable()).optional().nullable(),
+  UnixTime: z.preprocess(toNumber, z.number().nullable()).optional().nullable(),
+  LauncherVersion: z.preprocess(toStringAllowEmpty, z.string().nullable()).optional().nullable(),
+  RebootReason: z.preprocess(toStringAllowEmpty, z.string().nullable()).optional().nullable()
+});
+const normalizeText = (value, maxLength) => {
+  if (value === void 0 || value === null) {
+    return null;
+  }
+  const str = String(value);
+  if (maxLength && str.length > maxLength) {
+    return str.substring(0, maxLength);
+  }
+  return str;
+};
+const buildRowsFromPayload = (rawPayload) => {
+  const payload = kafkaPayloadSchema.parse(rawPayload);
+  const rebootReason = normalizeText(payload.RebootReason, 255);
+  const currentStatusRaw = normalizeText(payload.CurrentStatus, 255);
+  const hasRebootReason = rebootReason !== null && rebootReason !== "";
+  const currentStatus = hasRebootReason ? "on" : currentStatusRaw;
+  let tsMs = payload.UnixTime;
+  if (typeof tsMs === "number" && tsMs < 1e11) {
+    tsMs = tsMs * 1e3;
+  }
+  if (!tsMs && payload.CurrentTime) {
+    const parsed = Date.parse(payload.CurrentTime);
+    if (!isNaN(parsed)) {
+      tsMs = parsed;
+    }
+  }
+  if (!tsMs) {
+    tsMs = Date.now();
+  }
+  const mac = normalizeText(payload.MAC) || "";
+  const deviceId = normalizeText(payload.HostNumber) || "";
+  const roomId = normalizeText(payload.RoomNumber) || "";
+  const row = {
+    guid: createGuid(),
+    ts_ms: tsMs,
+    write_ts_ms: Date.now(),
+    hotel_id: payload.HotelCode,
+    mac,
+    device_id: deviceId,
+    room_id: roomId,
+    ip: normalizeText(payload.EndPoint),
+    current_status: currentStatus,
+    launcher_version: normalizeText(payload.LauncherVersion, 255),
+    reboot_reason: rebootReason
+  };
+  return [row];
+};
+const processKafkaMessage = async ({ message, dbManager: dbManager2, config: config2 }) => {
+  let rows;
+  try {
+    const rawValue = message.value.toString();
+    let payload;
+    try {
+      payload = JSON.parse(rawValue);
+    } catch (e) {
+      logger.error("JSON Parse Error", { error: e.message, rawValue });
+      const error = new Error(`JSON Parse Error: ${e.message}`);
+      error.type = "PARSE_ERROR";
+      throw error;
+    }
+    const validationResult = kafkaPayloadSchema.safeParse(payload);
+    if (!validationResult.success) {
+      logger.error("Schema Validation Failed", {
+        errors: validationResult.error.errors,
+        payload
+      });
+      const error = new Error(`Schema Validation Failed: ${JSON.stringify(validationResult.error.errors)}`);
+      error.type = "VALIDATION_ERROR";
+      throw error;
+    }
+    rows = buildRowsFromPayload(payload);
+  } catch (error) {
+    throw error;
+  }
+  try {
+    await dbManager2.insertRows({ schema: config2.db.schema, table: config2.db.table, rows });
+  } catch (error) {
+    error.type = "DB_ERROR";
+    const sample = rows?.[0];
+    error.dbContext = {
+      rowsLength: rows?.length || 0,
+      sampleRow: sample ? {
+        guid: sample.guid,
+        ts_ms: sample.ts_ms,
+        mac: sample.mac,
+        device_id: sample.device_id,
+        room_id: sample.room_id,
+        current_status: sample.current_status
+      } : null
+    };
+    throw error;
+  }
+  return rows.length;
+};
+const createRedisClient = async (config2) => {
+  const client = createClient({
+    socket: {
+      host: config2.host,
+      port: config2.port
+    },
+    password: config2.password,
+    database: config2.db
+  });
+  await client.connect();
+  return client;
+};
+class RedisIntegration {
+  constructor(client, projectName, apiBaseUrl) {
+    this.client = client;
+    this.projectName = projectName;
+    this.apiBaseUrl = apiBaseUrl;
+    this.heartbeatKey = "项目心跳";
+    this.logKey = `${projectName}_项目控制台`;
+  }
+  async info(message, context) {
+    const payload = {
+      timestamp: (/* @__PURE__ */ new Date()).toISOString(),
+      level: "info",
+      message,
+      metadata: context || void 0
+    };
+    await this.client.rPush(this.logKey, JSON.stringify(payload));
+  }
+  async error(message, context) {
+    const payload = {
+      timestamp: (/* @__PURE__ */ new Date()).toISOString(),
+      level: "error",
+      message,
+      metadata: context || void 0
+    };
+    await this.client.rPush(this.logKey, JSON.stringify(payload));
+  }
+  startHeartbeat() {
+    setInterval(() => {
+      const payload = {
+        projectName: this.projectName,
+        apiBaseUrl: this.apiBaseUrl,
+        lastActiveAt: Date.now()
+      };
+      this.client.rPush(this.heartbeatKey, JSON.stringify(payload));
+    }, 3e3);
+  }
+}
+const buildErrorQueueKey = (projectName) => `${projectName}_error_queue`;
+const enqueueError = async (client, queueKey, payload) => {
+  try {
+    await client.rPush(queueKey, JSON.stringify(payload));
+  } catch (error) {
+    logger$1.error("Redis enqueue error failed", { error: error?.message });
+    throw error;
+  }
+};
+const startErrorRetryWorker = async ({
+  client,
+  queueKey,
+  handler,
+  redisIntegration,
+  maxAttempts = 5
+}) => {
+  while (true) {
+    const result = await client.blPop(queueKey, 0);
+    const raw = result?.element;
+    if (!raw) {
+      continue;
+    }
+    let item;
+    try {
+      item = JSON.parse(raw);
+    } catch (error) {
+      logger$1.error("Invalid error payload", { error: error?.message });
+      await redisIntegration.error("Invalid error payload", { module: "redis", stack: error?.message });
+      continue;
+    }
+    const attempts = item.attempts || 0;
+    try {
+      await handler(item);
+    } catch (error) {
+      logger$1.error("Retry handler failed", { error: error?.message, stack: error?.stack });
+      const nextPayload = {
+        ...item,
+        attempts: attempts + 1,
+        lastError: error?.message,
+        lastAttemptAt: Date.now()
+      };
+      if (nextPayload.attempts >= maxAttempts) {
+        await redisIntegration.error("Retry attempts exceeded", { module: "retry", stack: JSON.stringify(nextPayload) });
+      } else {
+        await enqueueError(client, queueKey, nextPayload);
+      }
+    }
+  }
+};
+class MetricCollector {
+  constructor() {
+    this.reset();
+  }
+  reset() {
+    this.metrics = {
+      kafka_pulled: 0,
+      parse_error: 0,
+      db_inserted: 0,
+      db_failed: 0
+    };
+  }
+  increment(metric, count = 1) {
+    if (this.metrics.hasOwnProperty(metric)) {
+      this.metrics[metric] += count;
+    }
+  }
+  getAndReset() {
+    const current = { ...this.metrics };
+    this.reset();
+    return current;
+  }
+}
+const bootstrap = async () => {
+  logger$1.info("Starting application with config", {
+    env: process.env.NODE_ENV,
+    db: {
+      host: config.db.host,
+      port: config.db.port,
+      user: config.db.user,
+      database: config.db.database,
+      schema: config.db.schema
+    },
+    kafka: {
+      brokers: config.kafka.brokers,
+      topic: config.kafka.topic,
+      groupId: config.kafka.groupId
+    },
+    redis: {
+      host: config.redis.host,
+      port: config.redis.port
+    }
+  });
+  await dbInitializer.initialize();
+  const metricCollector = new MetricCollector();
+  cron.schedule("0 0 * * *", async () => {
+    logger$1.info("Running scheduled partition maintenance...");
+    try {
+      await partitionManager.ensurePartitions(30);
+    } catch (err) {
+      logger$1.error("Scheduled partition maintenance failed", err);
+    }
+  });
+  const redisClient = await createRedisClient(config.redis);
+  const redisIntegration = new RedisIntegration(
+    redisClient,
+    config.redis.projectName,
+    config.redis.apiBaseUrl
+  );
+  redisIntegration.startHeartbeat();
+  cron.schedule("* * * * *", async () => {
+    const metrics = metricCollector.getAndReset();
+    const report = `[Minute Metrics] Pulled: ${metrics.kafka_pulled}, Parse Error: ${metrics.parse_error}, Inserted: ${metrics.db_inserted}, Failed: ${metrics.db_failed}`;
+    console.log(report);
+    logger$1.info(report, metrics);
+    try {
+      await redisIntegration.info("Minute Metrics", metrics);
+    } catch (err) {
+      logger$1.error("Failed to report metrics to Redis", { error: err?.message });
+    }
+  });
+  const errorQueueKey = buildErrorQueueKey(config.redis.projectName);
+  const handleError = async (error, message) => {
+    logger$1.error("Kafka processing error", {
+      error: error?.message,
+      type: error?.type,
+      stack: error?.stack
+    });
+    try {
+      await redisIntegration.error("Kafka processing error", {
+        module: "kafka",
+        stack: error?.stack || error?.message
+      });
+    } catch (redisError) {
+      logger$1.error("Redis error log failed", { error: redisError?.message });
+    }
+    if (message) {
+      const messageValue = Buffer.isBuffer(message.value) ? message.value.toString("utf8") : message.value;
+      try {
+        await enqueueError(redisClient, errorQueueKey, {
+          attempts: 0,
+          value: messageValue,
+          meta: {
+            topic: message.topic,
+            partition: message.partition,
+            offset: message.offset,
+            key: message.key
+          },
+          timestamp: Date.now()
+        });
+      } catch (enqueueError2) {
+        logger$1.error("Enqueue error payload failed", { error: enqueueError2?.message });
+      }
+    }
+  };
+  const handleMessage = async (message) => {
+    if (message.topic) {
+      metricCollector.increment("kafka_pulled");
+    }
+    const messageValue = Buffer.isBuffer(message.value) ? message.value.toString("utf8") : message.value;
+    Buffer.isBuffer(message.key) ? message.key.toString("utf8") : message.key;
+    ({
+      topic: message.topic,
+      partition: message.partition,
+      offset: message.offset,
+      valueLength: !config.kafka.logMessages && typeof messageValue === "string" ? messageValue.length : null
+    });
+    while (true) {
+      try {
+        const inserted = await processKafkaMessage({ message, dbManager, config });
+        metricCollector.increment("db_inserted");
+        return;
+      } catch (error) {
+        const isDbConnectionError = error.code && ["ECONNREFUSED", "57P03", "08006", "08001", "EADDRINUSE", "ETIMEDOUT"].includes(error.code) || error.message && (error.message.includes("ECONNREFUSED") || error.message.includes("connection") || error.message.includes("terminated") || error.message.includes("EADDRINUSE") || error.message.includes("ETIMEDOUT") || error.message.includes("The server does not support SSL connections"));
+        if (isDbConnectionError) {
+          logger$1.error("Database offline. Pausing consumption for 1 minute...", { error: error.message });
+          await new Promise((resolve) => setTimeout(resolve, 6e4));
+          while (true) {
+            const isConnected = await dbManager.checkConnection();
+            if (isConnected) {
+              logger$1.info("Database connection restored. Resuming processing...");
+              break;
+            }
+            logger$1.warn("Database still offline. Waiting 1 minute...");
+            await new Promise((resolve) => setTimeout(resolve, 6e4));
+          }
+        } else {
+          if (error.type === "PARSE_ERROR") {
+            metricCollector.increment("parse_error");
+          } else {
+            metricCollector.increment("db_failed");
+          }
+          logger$1.error("Message processing failed (Data/Logic Error), skipping message", {
+            error: error?.message,
+            type: error?.type
+          });
+          await handleError(error, message);
+          return;
+        }
+      }
+    }
+  };
+  const consumers = createKafkaConsumers({
+    kafkaConfig: config.kafka,
+    onMessage: handleMessage,
+    onError: handleError
+  });
+  startErrorRetryWorker({
+    client: redisClient,
+    queueKey: errorQueueKey,
+    redisIntegration,
+    handler: async (item) => {
+      if (!item?.value) {
+        throw new Error("Missing value in retry payload");
+      }
+      await handleMessage({ value: item.value });
+    }
+  }).catch((err) => {
+    logger$1.error("Retry worker failed", { error: err?.message });
+  });
+  const shutdown = async (signal) => {
+    logger$1.info(`Received ${signal}, shutting down...`);
+    try {
+      if (consumers && consumers.length > 0) {
+        await Promise.all(consumers.map((c) => new Promise((resolve) => c.close(true, resolve))));
+        logger$1.info("Kafka consumer closed", { count: consumers.length });
+      }
+      await redisClient.quit();
+      logger$1.info("Redis client closed");
+      await dbManager.close();
+      logger$1.info("Database connection closed");
+      process.exit(0);
+    } catch (err) {
+      logger$1.error("Error during shutdown", { error: err?.message });
+      process.exit(1);
+    }
+  };
+  process.on("SIGTERM", () => shutdown("SIGTERM"));
+  process.on("SIGINT", () => shutdown("SIGINT"));
+};
+bootstrap().catch((error) => {
+  logger$1.error("Service bootstrap failed", { error: error?.message });
+  process.exit(1);
+});
--- a/bls-onoffline-backend/ecosystem.config.cjs
+++ b/bls-onoffline-backend/ecosystem.config.cjs
@@ -0,0 +1,22 @@
+module.exports = {
+  apps: [{
+    name: 'bls-onoffline',
+    script: 'dist/index.js',
+    instances: 1,
+    exec_mode: 'fork',
+    autorestart: true,
+    watch: false,
+    max_memory_restart: '1G',
+    env_file: '.env',
+    env: {
+      NODE_ENV: 'production',
+      PORT: 3001
+    },
+    error_file: './logs/error.log',
+    out_file: './logs/out.log',
+    log_date_format: 'YYYY-MM-DD HH:mm:ss Z',
+    merge_logs: true,
+	kill_timeout: 5000,
+    time: true
+  }]
+};
--- a/bls-onoffline-backend/openspec/AGENTS.md
+++ b/bls-onoffline-backend/openspec/AGENTS.md
@@ -0,0 +1,456 @@
+# OpenSpec Instructions
+
+Instructions for AI coding assistants using OpenSpec for spec-driven development.
+
+## TL;DR Quick Checklist
+
+- Search existing work: `openspec spec list --long`, `openspec list` (use `rg` only for full-text search)
+- Decide scope: new capability vs modify existing capability
+- Pick a unique `change-id`: kebab-case, verb-led (`add-`, `update-`, `remove-`, `refactor-`)
+- Scaffold: `proposal.md`, `tasks.md`, `design.md` (only if needed), and delta specs per affected capability
+- Write deltas: use `## ADDED|MODIFIED|REMOVED|RENAMED Requirements`; include at least one `#### Scenario:` per requirement
+- Validate: `openspec validate [change-id] --strict` and fix issues
+- Request approval: Do not start implementation until proposal is approved
+
+## Three-Stage Workflow
+
+### Stage 1: Creating Changes
+Create proposal when you need to:
+- Add features or functionality
+- Make breaking changes (API, schema)
+- Change architecture or patterns  
+- Optimize performance (changes behavior)
+- Update security patterns
+
+Triggers (examples):
+- "Help me create a change proposal"
+- "Help me plan a change"
+- "Help me create a proposal"
+- "I want to create a spec proposal"
+- "I want to create a spec"
+
+Loose matching guidance:
+- Contains one of: `proposal`, `change`, `spec`
+- With one of: `create`, `plan`, `make`, `start`, `help`
+
+Skip proposal for:
+- Bug fixes (restore intended behavior)
+- Typos, formatting, comments
+- Dependency updates (non-breaking)
+- Configuration changes
+- Tests for existing behavior
+
+**Workflow**
+1. Review `openspec/project.md`, `openspec list`, and `openspec list --specs` to understand current context.
+2. Choose a unique verb-led `change-id` and scaffold `proposal.md`, `tasks.md`, optional `design.md`, and spec deltas under `openspec/changes/<id>/`.
+3. Draft spec deltas using `## ADDED|MODIFIED|REMOVED Requirements` with at least one `#### Scenario:` per requirement.
+4. Run `openspec validate <id> --strict` and resolve any issues before sharing the proposal.
+
+### Stage 2: Implementing Changes
+Track these steps as TODOs and complete them one by one.
+1. **Read proposal.md** - Understand what's being built
+2. **Read design.md** (if exists) - Review technical decisions
+3. **Read tasks.md** - Get implementation checklist
+4. **Implement tasks sequentially** - Complete in order
+5. **Confirm completion** - Ensure every item in `tasks.md` is finished before updating statuses
+6. **Update checklist** - After all work is done, set every task to `- [x]` so the list reflects reality
+7. **Approval gate** - Do not start implementation until the proposal is reviewed and approved
+
+### Stage 3: Archiving Changes
+After deployment, create separate PR to:
+- Move `changes/[name]/` → `changes/archive/YYYY-MM-DD-[name]/`
+- Update `specs/` if capabilities changed
+- Use `openspec archive <change-id> --skip-specs --yes` for tooling-only changes (always pass the change ID explicitly)
+- Run `openspec validate --strict` to confirm the archived change passes checks
+
+## Before Any Task
+
+**Context Checklist:**
+- [ ] Read relevant specs in `specs/[capability]/spec.md`
+- [ ] Check pending changes in `changes/` for conflicts
+- [ ] Read `openspec/project.md` for conventions
+- [ ] Run `openspec list` to see active changes
+- [ ] Run `openspec list --specs` to see existing capabilities
+
+**Before Creating Specs:**
+- Always check if capability already exists
+- Prefer modifying existing specs over creating duplicates
+- Use `openspec show [spec]` to review current state
+- If request is ambiguous, ask 1–2 clarifying questions before scaffolding
+
+### Search Guidance
+- Enumerate specs: `openspec spec list --long` (or `--json` for scripts)
+- Enumerate changes: `openspec list` (or `openspec change list --json` - deprecated but available)
+- Show details:
+  - Spec: `openspec show <spec-id> --type spec` (use `--json` for filters)
+  - Change: `openspec show <change-id> --json --deltas-only`
+- Full-text search (use ripgrep): `rg -n "Requirement:|Scenario:" openspec/specs`
+
+## Quick Start
+
+### CLI Commands
+
+```bash
+# Essential commands
+openspec list                  # List active changes
+openspec list --specs          # List specifications
+openspec show [item]           # Display change or spec
+openspec validate [item]       # Validate changes or specs
+openspec archive <change-id> [--yes|-y]   # Archive after deployment (add --yes for non-interactive runs)
+
+# Project management
+openspec init [path]           # Initialize OpenSpec
+openspec update [path]         # Update instruction files
+
+# Interactive mode
+openspec show                  # Prompts for selection
+openspec validate              # Bulk validation mode
+
+# Debugging
+openspec show [change] --json --deltas-only
+openspec validate [change] --strict
+```
+
+### Command Flags
+
+- `--json` - Machine-readable output
+- `--type change|spec` - Disambiguate items
+- `--strict` - Comprehensive validation
+- `--no-interactive` - Disable prompts
+- `--skip-specs` - Archive without spec updates
+- `--yes`/`-y` - Skip confirmation prompts (non-interactive archive)
+
+## Directory Structure
+
+```
+openspec/
+├── project.md              # Project conventions
+├── specs/                  # Current truth - what IS built
+│   └── [capability]/       # Single focused capability
+│       ├── spec.md         # Requirements and scenarios
+│       └── design.md       # Technical patterns
+├── changes/                # Proposals - what SHOULD change
+│   ├── [change-name]/
+│   │   ├── proposal.md     # Why, what, impact
+│   │   ├── tasks.md        # Implementation checklist
+│   │   ├── design.md       # Technical decisions (optional; see criteria)
+│   │   └── specs/          # Delta changes
+│   │       └── [capability]/
+│   │           └── spec.md # ADDED/MODIFIED/REMOVED
+│   └── archive/            # Completed changes
+```
+
+## Creating Change Proposals
+
+### Decision Tree
+
+```
+New request?
+├─ Bug fix restoring spec behavior? → Fix directly
+├─ Typo/format/comment? → Fix directly  
+├─ New feature/capability? → Create proposal
+├─ Breaking change? → Create proposal
+├─ Architecture change? → Create proposal
+└─ Unclear? → Create proposal (safer)
+```
+
+### Proposal Structure
+
+1. **Create directory:** `changes/[change-id]/` (kebab-case, verb-led, unique)
+
+2. **Write proposal.md:**
+```markdown
+# Change: [Brief description of change]
+
+## Why
+[1-2 sentences on problem/opportunity]
+
+## What Changes
+- [Bullet list of changes]
+- [Mark breaking changes with **BREAKING**]
+
+## Impact
+- Affected specs: [list capabilities]
+- Affected code: [key files/systems]
+```
+
+3. **Create spec deltas:** `specs/[capability]/spec.md`
+```markdown
+## ADDED Requirements
+### Requirement: New Feature
+The system SHALL provide...
+
+#### Scenario: Success case
+- **WHEN** user performs action
+- **THEN** expected result
+
+## MODIFIED Requirements
+### Requirement: Existing Feature
+[Complete modified requirement]
+
+## REMOVED Requirements
+### Requirement: Old Feature
+**Reason**: [Why removing]
+**Migration**: [How to handle]
+```
+If multiple capabilities are affected, create multiple delta files under `changes/[change-id]/specs/<capability>/spec.md`—one per capability.
+
+4. **Create tasks.md:**
+```markdown
+## 1. Implementation
+- [ ] 1.1 Create database schema
+- [ ] 1.2 Implement API endpoint
+- [ ] 1.3 Add frontend component
+- [ ] 1.4 Write tests
+```
+
+5. **Create design.md when needed:**
+Create `design.md` if any of the following apply; otherwise omit it:
+- Cross-cutting change (multiple services/modules) or a new architectural pattern
+- New external dependency or significant data model changes
+- Security, performance, or migration complexity
+- Ambiguity that benefits from technical decisions before coding
+
+Minimal `design.md` skeleton:
+```markdown
+## Context
+[Background, constraints, stakeholders]
+
+## Goals / Non-Goals
+- Goals: [...]
+- Non-Goals: [...]
+
+## Decisions
+- Decision: [What and why]
+- Alternatives considered: [Options + rationale]
+
+## Risks / Trade-offs
+- [Risk] → Mitigation
+
+## Migration Plan
+[Steps, rollback]
+
+## Open Questions
+- [...]
+```
+
+## Spec File Format
+
+### Critical: Scenario Formatting
+
+**CORRECT** (use #### headers):
+```markdown
+#### Scenario: User login success
+- **WHEN** valid credentials provided
+- **THEN** return JWT token
+```
+
+**WRONG** (don't use bullets or bold):
+```markdown
+- **Scenario: User login**  ❌
+**Scenario**: User login     ❌
+### Scenario: User login      ❌
+```
+
+Every requirement MUST have at least one scenario.
+
+### Requirement Wording
+- Use SHALL/MUST for normative requirements (avoid should/may unless intentionally non-normative)
+
+### Delta Operations
+
+- `## ADDED Requirements` - New capabilities
+- `## MODIFIED Requirements` - Changed behavior
+- `## REMOVED Requirements` - Deprecated features
+- `## RENAMED Requirements` - Name changes
+
+Headers matched with `trim(header)` - whitespace ignored.
+
+#### When to use ADDED vs MODIFIED
+- ADDED: Introduces a new capability or sub-capability that can stand alone as a requirement. Prefer ADDED when the change is orthogonal (e.g., adding "Slash Command Configuration") rather than altering the semantics of an existing requirement.
+- MODIFIED: Changes the behavior, scope, or acceptance criteria of an existing requirement. Always paste the full, updated requirement content (header + all scenarios). The archiver will replace the entire requirement with what you provide here; partial deltas will drop previous details.
+- RENAMED: Use when only the name changes. If you also change behavior, use RENAMED (name) plus MODIFIED (content) referencing the new name.
+
+Common pitfall: Using MODIFIED to add a new concern without including the previous text. This causes loss of detail at archive time. If you aren’t explicitly changing the existing requirement, add a new requirement under ADDED instead.
+
+Authoring a MODIFIED requirement correctly:
+1) Locate the existing requirement in `openspec/specs/<capability>/spec.md`.
+2) Copy the entire requirement block (from `### Requirement: ...` through its scenarios).
+3) Paste it under `## MODIFIED Requirements` and edit to reflect the new behavior.
+4) Ensure the header text matches exactly (whitespace-insensitive) and keep at least one `#### Scenario:`.
+
+Example for RENAMED:
+```markdown
+## RENAMED Requirements
+- FROM: `### Requirement: Login`
+- TO: `### Requirement: User Authentication`
+```
+
+## Troubleshooting
+
+### Common Errors
+
+**"Change must have at least one delta"**
+- Check `changes/[name]/specs/` exists with .md files
+- Verify files have operation prefixes (## ADDED Requirements)
+
+**"Requirement must have at least one scenario"**
+- Check scenarios use `#### Scenario:` format (4 hashtags)
+- Don't use bullet points or bold for scenario headers
+
+**Silent scenario parsing failures**
+- Exact format required: `#### Scenario: Name`
+- Debug with: `openspec show [change] --json --deltas-only`
+
+### Validation Tips
+
+```bash
+# Always use strict mode for comprehensive checks
+openspec validate [change] --strict
+
+# Debug delta parsing
+openspec show [change] --json | jq '.deltas'
+
+# Check specific requirement
+openspec show [spec] --json -r 1
+```
+
+## Happy Path Script
+
+```bash
+# 1) Explore current state
+openspec spec list --long
+openspec list
+# Optional full-text search:
+# rg -n "Requirement:|Scenario:" openspec/specs
+# rg -n "^#|Requirement:" openspec/changes
+
+# 2) Choose change id and scaffold
+CHANGE=add-two-factor-auth
+mkdir -p openspec/changes/$CHANGE/{specs/auth}
+printf "## Why\n...\n\n## What Changes\n- ...\n\n## Impact\n- ...\n" > openspec/changes/$CHANGE/proposal.md
+printf "## 1. Implementation\n- [ ] 1.1 ...\n" > openspec/changes/$CHANGE/tasks.md
+
+# 3) Add deltas (example)
+cat > openspec/changes/$CHANGE/specs/auth/spec.md << 'EOF'
+## ADDED Requirements
+### Requirement: Two-Factor Authentication
+Users MUST provide a second factor during login.
+
+#### Scenario: OTP required
+- **WHEN** valid credentials are provided
+- **THEN** an OTP challenge is required
+EOF
+
+# 4) Validate
+openspec validate $CHANGE --strict
+```
+
+## Multi-Capability Example
+
+```
+openspec/changes/add-2fa-notify/
+├── proposal.md
+├── tasks.md
+└── specs/
+    ├── auth/
+    │   └── spec.md   # ADDED: Two-Factor Authentication
+    └── notifications/
+        └── spec.md   # ADDED: OTP email notification
+```
+
+auth/spec.md
+```markdown
+## ADDED Requirements
+### Requirement: Two-Factor Authentication
+...
+```
+
+notifications/spec.md
+```markdown
+## ADDED Requirements
+### Requirement: OTP Email Notification
+...
+```
+
+## Best Practices
+
+### Simplicity First
+- Default to <100 lines of new code
+- Single-file implementations until proven insufficient
+- Avoid frameworks without clear justification
+- Choose boring, proven patterns
+
+### Complexity Triggers
+Only add complexity with:
+- Performance data showing current solution too slow
+- Concrete scale requirements (>1000 users, >100MB data)
+- Multiple proven use cases requiring abstraction
+
+### Clear References
+- Use `file.ts:42` format for code locations
+- Reference specs as `specs/auth/spec.md`
+- Link related changes and PRs
+
+### Capability Naming
+- Use verb-noun: `user-auth`, `payment-capture`
+- Single purpose per capability
+- 10-minute understandability rule
+- Split if description needs "AND"
+
+### Change ID Naming
+- Use kebab-case, short and descriptive: `add-two-factor-auth`
+- Prefer verb-led prefixes: `add-`, `update-`, `remove-`, `refactor-`
+- Ensure uniqueness; if taken, append `-2`, `-3`, etc.
+
+## Tool Selection Guide
+
+| Task | Tool | Why |
+|------|------|-----|
+| Find files by pattern | Glob | Fast pattern matching |
+| Search code content | Grep | Optimized regex search |
+| Read specific files | Read | Direct file access |
+| Explore unknown scope | Task | Multi-step investigation |
+
+## Error Recovery
+
+### Change Conflicts
+1. Run `openspec list` to see active changes
+2. Check for overlapping specs
+3. Coordinate with change owners
+4. Consider combining proposals
+
+### Validation Failures
+1. Run with `--strict` flag
+2. Check JSON output for details
+3. Verify spec file format
+4. Ensure scenarios properly formatted
+
+### Missing Context
+1. Read project.md first
+2. Check related specs
+3. Review recent archives
+4. Ask for clarification
+
+## Quick Reference
+
+### Stage Indicators
+- `changes/` - Proposed, not yet built
+- `specs/` - Built and deployed
+- `archive/` - Completed changes
+
+### File Purposes
+- `proposal.md` - Why and what
+- `tasks.md` - Implementation steps
+- `design.md` - Technical decisions
+- `spec.md` - Requirements and behavior
+
+### CLI Essentials
+```bash
+openspec list              # What's in progress?
+openspec show [item]       # View details
+openspec validate --strict # Is it correct?
+openspec archive <change-id> [--yes|-y]  # Mark complete (add --yes for automation)
+```
+
+Remember: Specs are truth. Changes are proposals. Keep them in sync.
--- a/bls-onoffline-backend/openspec/changes/archive/2026-02-04-fix-kafka-partition-schema/proposal.md
+++ b/bls-onoffline-backend/openspec/changes/archive/2026-02-04-fix-kafka-partition-schema/proposal.md
@@ -0,0 +1,17 @@
+# Change: Fix Kafka Partitioning and Schema Issues
+
+## Why
+Production deployment revealed issues with data ingestion:
+1. Kafka Topic name changed to include partition suffix.
+2. Legacy data contains second-level timestamps (1970s) causing partition lookup failures in PostgreSQL (which expects ms).
+3. Variable-length fields (reboot reason, status) exceeded VARCHAR(10) limits, causing crashes.
+
+## What Changes
+- **Modified Requirement**: Update Kafka Topic to `blwlog4Nodejs-rcu-onoffline-topic-0`.
+- **New Requirement**: Implement heuristic timestamp conversion (Sec -> MS) for values < 100B.
+- **New Requirement**: Truncate specific fields to VARCHAR(255) to prevent DB rejection.
+- **Modified Requirement**: Update DB Schema to VARCHAR(255) for robustness.
+
+## Impact
+- Affected specs: `onoffline`
+- Affected code: `src/processor/index.js`, `scripts/init_db.sql`
--- a/bls-onoffline-backend/openspec/changes/archive/2026-02-04-fix-kafka-partition-schema/specs/onoffline/spec.md
+++ b/bls-onoffline-backend/openspec/changes/archive/2026-02-04-fix-kafka-partition-schema/specs/onoffline/spec.md
@@ -0,0 +1,25 @@
+## MODIFIED Requirements
+### Requirement: 消费并落库
+系统 SHALL 从 blwlog4Nodejs-rcu-onoffline-topic-0 消费消息，并写入 log_platform.onoffline.onoffline_record。
+
+#### Scenario: 非重启数据写入
+- **GIVEN** RebootReason 为空或不存在
+- **WHEN** 消息被处理
+- **THEN** current_status 等于 CurrentStatus (截断至 255 字符)
+
+## ADDED Requirements
+### Requirement: 字段长度限制与截断
+系统 SHALL 将部分变长字段截断至数据库允许的最大长度 (VARCHAR(255))，防止写入失败。
+
+#### Scenario: 超长字段处理
+- **GIVEN** LauncherVersion, CurrentStatus 或 RebootReason 超过 255 字符
+- **WHEN** 消息被处理
+- **THEN** 字段被截断为前 255 个字符并入库
+
+### Requirement: 时间戳单位自动识别
+系统 SHALL 自动识别 UnixTime 字段是秒还是毫秒，并统一转换为毫秒。
+
+#### Scenario: 秒级时间戳转换
+- **GIVEN** UnixTime < 100000000000 (约 1973 年前)
+- **WHEN** 解析时间戳
+- **THEN** 自动乘以 1000 转换为毫秒
--- a/bls-onoffline-backend/openspec/changes/archive/2026-02-04-fix-kafka-partition-schema/tasks.md
+++ b/bls-onoffline-backend/openspec/changes/archive/2026-02-04-fix-kafka-partition-schema/tasks.md
@@ -0,0 +1,6 @@
+## 1. Implementation
+- [x] Update Kafka Topic in .env and config
+- [x] Implement timestamp unit detection and conversion in processor
+- [x] Implement field truncation logic in processor
+- [x] Update database schema definition (init_db.sql) to VARCHAR(255)
+- [x] Verify data ingestion with production stream
--- a/bls-onoffline-backend/openspec/project.md
+++ b/bls-onoffline-backend/openspec/project.md
@@ -0,0 +1,31 @@
+# Project Context
+
+## Purpose
+[Describe your project's purpose and goals]
+
+## Tech Stack
+- [List your primary technologies]
+- [e.g., TypeScript, React, Node.js]
+
+## Project Conventions
+
+### Code Style
+[Describe your code style preferences, formatting rules, and naming conventions]
+
+### Architecture Patterns
+[Document your architectural decisions and patterns]
+
+### Testing Strategy
+[Explain your testing approach and requirements]
+
+### Git Workflow
+[Describe your branching strategy and commit conventions]
+
+## Domain Context
+[Add domain-specific knowledge that AI assistants need to understand]
+
+## Important Constraints
+[List any technical, business, or regulatory constraints]
+
+## External Dependencies
+[Document key external services, APIs, or systems]
--- a/bls-onoffline-backend/openspec/specs/onoffline/spec.md
+++ b/bls-onoffline-backend/openspec/specs/onoffline/spec.md
@@ -0,0 +1,85 @@
+# Spec: onoffline-backend
+
+## Purpose
+从 Kafka 消费设备上下线事件并按规则写入 PostgreSQL 分区表，确保高可靠性、幂等写入和错误恢复能力。
+## Requirements
+### Requirement: 消费并落库
+系统 SHALL 从 blwlog4Nodejs-rcu-onoffline-topic-0 消费消息，并写入 log_platform.onoffline.onoffline_record。
+
+#### Scenario: 非重启数据写入
+- **GIVEN** RebootReason 为空或不存在
+- **WHEN** 消息被处理
+- **THEN** current_status 等于 CurrentStatus (截断至 255 字符)
+
+### Requirement: 重启数据处理
+系统 SHALL 在 RebootReason 非空时强制 current_status 为 on。
+
+#### Scenario: 重启数据写入
+- **GIVEN** RebootReason 为非空值
+- **WHEN** 消息被处理
+- **THEN** current_status 等于 on
+
+### Requirement: 空值保留
+系统 SHALL 保留上游空值，不对字段进行补 0。
+
+#### Scenario: 空值写入
+- **GIVEN** LauncherVersion 或 RebootReason 为空字符串
+- **WHEN** 消息被处理
+- **THEN** 数据库存储值为对应的空字符串
+
+### Requirement: 数据库分区策略
+系统 SHALL 使用 Range Partitioning 按天分区，并自动维护未来 30 天的分区表。
+
+#### Scenario: 分区预创建
+- **GIVEN** 系统启动或每日凌晨
+- **WHEN** 运行分区维护任务
+- **THEN** 确保数据库中存在未来 30 天的分区表
+
+### Requirement: 消费可靠性 (At-Least-Once)
+系统 SHALL 仅在数据成功写入数据库后，才向 Kafka 提交消费位点。
+
+#### Scenario: 逐条确认与顺序提交
+- **GIVEN** 并发处理多条消息 (Offset 1, 2, 3)
+- **WHEN** Offset 2 先完成，Offset 1 尚未完成
+- **THEN** 系统不提交 Offset 2，直到 Offset 1 也完成，才提交 Offset 3 (即 1, 2, 3 都完成)
+
+### Requirement: 数据库离线保护
+系统 SHALL 在数据库连接丢失时暂停消费，防止数据堆积或丢失。
+
+#### Scenario: 数据库断连
+- **GIVEN** 数据库连接失败 (ECONNREFUSED 等)
+- **WHEN** 消费者尝试写入
+- **THEN** 暂停 Kafka 消费 1 分钟，并进入轮询检测模式，直到数据库恢复
+
+### Requirement: 幂等写入
+系统 SHALL 处理重复消费的数据，防止主键冲突。
+
+#### Scenario: 重复数据处理
+- **GIVEN** Kafka 重新投递已处理过的消息
+- **WHEN** 尝试写入数据库
+- **THEN** 使用 `ON CONFLICT DO NOTHING` 忽略冲突，视为处理成功
+
+### Requirement: 性能与日志
+系统 SHALL 最小化正常运行时的日志输出。
+
+#### Scenario: 正常运行日志
+- **GIVEN** 数据正常处理
+- **WHEN** 写入成功
+- **THEN** 不输出单条日志，仅每分钟输出聚合统计 (Pulled/Inserted)
+
+### Requirement: 字段长度限制与截断
+系统 SHALL 将部分变长字段截断至数据库允许的最大长度 (VARCHAR(255))，防止写入失败。
+
+#### Scenario: 超长字段处理
+- **GIVEN** LauncherVersion, CurrentStatus 或 RebootReason 超过 255 字符
+- **WHEN** 消息被处理
+- **THEN** 字段被截断为前 255 个字符并入库
+
+### Requirement: 时间戳单位自动识别
+系统 SHALL 自动识别 UnixTime 字段是秒还是毫秒，并统一转换为毫秒。
+
+#### Scenario: 秒级时间戳转换
+- **GIVEN** UnixTime < 100000000000 (约 1973 年前)
+- **WHEN** 解析时间戳
+- **THEN** 自动乘以 1000 转换为毫秒
+
--- a/bls-onoffline-backend/openspec/specs/onoffline/status.md
+++ b/bls-onoffline-backend/openspec/specs/onoffline/status.md
@@ -0,0 +1,11 @@
+
+## Implementation Status
+- **Date**: 2026-02-04
+- **Status**: Completed
+- **Notes**:
+  - 已完成核心消费逻辑、分区管理、数据库幂等写入。
+  - 已处理数据库连接泄露 (EADDRINUSE) 问题，增加了离线保护机制。
+  - 已修复时间戳单位问题 (Seconds -> MS)。
+  - 已将关键字段长度扩展至 VARCHAR(255) 并增加了代码层截断保护。
+  - 验证了数据积压消费能力。
+  - 本阶段开发任务已归档。
--- a/bls-onoffline-backend/package-lock.json
+++ b/bls-onoffline-backend/package-lock.json
--- a/bls-onoffline-backend/package.json
+++ b/bls-onoffline-backend/package.json
@@ -0,0 +1,27 @@
+{
+  "name": "bls-onoffline-backend",
+  "version": "1.0.0",
+  "type": "module",
+  "private": true,
+  "scripts": {
+    "dev": "node src/index.js",
+    "build": "vite build --ssr src/index.js --outDir dist",
+    "test": "vitest run",
+    "lint": "node scripts/lint.js",
+    "spec:lint": "openspec validate --specs --strict --no-interactive",
+    "spec:validate": "openspec validate --specs --no-interactive",
+    "start": "node dist/index.js"
+  },
+  "dependencies": {
+    "dotenv": "^16.4.5",
+    "kafka-node": "^5.0.0",
+    "node-cron": "^4.2.1",
+    "pg": "^8.11.5",
+    "redis": "^4.6.13",
+    "zod": "^4.3.6"
+  },
+  "devDependencies": {
+    "vite": "^5.4.0",
+    "vitest": "^4.0.18"
+  }
+}
--- a/bls-onoffline-backend/scripts/init_db.sql
+++ b/bls-onoffline-backend/scripts/init_db.sql
@@ -0,0 +1,23 @@
+CREATE SCHEMA IF NOT EXISTS onoffline;
+
+CREATE TABLE IF NOT EXISTS onoffline.onoffline_record (
+    guid VARCHAR(32) NOT NULL,
+    ts_ms BIGINT NOT NULL,
+    write_ts_ms BIGINT NOT NULL,
+    hotel_id SMALLINT NOT NULL,
+    mac VARCHAR(21) NOT NULL,
+    device_id VARCHAR(64) NOT NULL,
+    room_id VARCHAR(64) NOT NULL,
+    ip VARCHAR(21),
+    current_status VARCHAR(255),
+    launcher_version VARCHAR(255),
+    reboot_reason VARCHAR(255),
+    PRIMARY KEY (ts_ms, mac, device_id, room_id)
+) PARTITION BY RANGE (ts_ms);
+
+CREATE INDEX IF NOT EXISTS idx_onoffline_ts_ms ON onoffline.onoffline_record (ts_ms);
+CREATE INDEX IF NOT EXISTS idx_onoffline_hotel_id ON onoffline.onoffline_record (hotel_id);
+CREATE INDEX IF NOT EXISTS idx_onoffline_mac ON onoffline.onoffline_record (mac);
+CREATE INDEX IF NOT EXISTS idx_onoffline_device_id ON onoffline.onoffline_record (device_id);
+CREATE INDEX IF NOT EXISTS idx_onoffline_room_id ON onoffline.onoffline_record (room_id);
+CREATE INDEX IF NOT EXISTS idx_onoffline_current_status ON onoffline.onoffline_record (current_status);
--- a/bls-onoffline-backend/scripts/lint.js
+++ b/bls-onoffline-backend/scripts/lint.js
@@ -0,0 +1,41 @@
+import fs from 'fs';
+import path from 'path';
+import { fileURLToPath } from 'url';
+import { spawnSync } from 'child_process';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+const projectRoot = path.resolve(__dirname, '..');
+const targets = ['src', 'tests'];
+
+const collectFiles = (dir) => {
+  if (!fs.existsSync(dir)) {
+    return [];
+  }
+  const entries = fs.readdirSync(dir, { withFileTypes: true });
+  return entries.flatMap((entry) => {
+    const fullPath = path.join(dir, entry.name);
+    if (entry.isDirectory()) {
+      return collectFiles(fullPath);
+    }
+    if (entry.isFile() && fullPath.endsWith('.js')) {
+      return [fullPath];
+    }
+    return [];
+  });
+};
+
+const files = targets.flatMap((target) => collectFiles(path.join(projectRoot, target)));
+
+const failures = [];
+
+files.forEach((file) => {
+  const result = spawnSync(process.execPath, ['--check', file], { stdio: 'inherit' });
+  if (result.status !== 0) {
+    failures.push(file);
+  }
+});
+
+if (failures.length > 0) {
+  process.exit(1);
+}
--- a/bls-onoffline-backend/scripts/verify_data.js
+++ b/bls-onoffline-backend/scripts/verify_data.js
@@ -0,0 +1,36 @@
+
+import { config } from '../src/config/config.js';
+import dbManager from '../src/db/databaseManager.js';
+import { logger } from '../src/utils/logger.js';
+
+const verifyData = async () => {
+  const client = await dbManager.pool.connect();
+  try {
+    console.log('Verifying data in database...');
+    
+    // Count total rows
+    const countSql = `SELECT count(*) FROM ${config.db.schema}.${config.db.table}`;
+    const countRes = await client.query(countSql);
+    console.log(`Total rows in ${config.db.schema}.${config.db.table}: ${countRes.rows[0].count}`);
+
+    // Check recent rows
+    const recentSql = `
+      SELECT * FROM ${config.db.schema}.${config.db.table}
+      ORDER BY ts_ms DESC
+      LIMIT 5
+    `;
+    const recentRes = await client.query(recentSql);
+    console.log('Recent 5 rows:');
+    recentRes.rows.forEach(row => {
+      console.log(JSON.stringify(row));
+    });
+
+  } catch (err) {
+    console.error('Error verifying data:', err);
+  } finally {
+    client.release();
+    await dbManager.pool.end();
+  }
+};
+
+verifyData();
--- a/bls-onoffline-backend/scripts/verify_partitions.js
+++ b/bls-onoffline-backend/scripts/verify_partitions.js
@@ -0,0 +1,61 @@
+import pg from 'pg';
+import { config } from '../src/config/config.js';
+
+const { Pool } = pg;
+
+const verify = async () => {
+  const pool = new Pool({
+    host: config.db.host,
+    port: config.db.port,
+    user: config.db.user,
+    password: config.db.password,
+    database: config.db.database,
+    ssl: config.db.ssl,
+  });
+
+  try {
+    console.log('Verifying partitions for table onoffline_record...');
+    const client = await pool.connect();
+    
+    // Check parent table
+    const parentRes = await client.query(`
+      SELECT to_regclass('onoffline.onoffline_record') as oid;
+    `);
+    if (!parentRes.rows[0].oid) {
+      console.error('Parent table onoffline.onoffline_record DOES NOT EXIST.');
+      return;
+    }
+    console.log('Parent table onoffline.onoffline_record exists.');
+
+    // Check partitions
+    const res = await client.query(`
+      SELECT
+        child.relname AS partition_name
+      FROM pg_inherits
+      JOIN pg_class parent ON pg_inherits.inhparent = parent.oid
+      JOIN pg_class child ON pg_inherits.inhrelid = child.oid
+      JOIN pg_namespace ns ON parent.relnamespace = ns.oid
+      WHERE parent.relname = 'onoffline_record' AND ns.nspname = 'onoffline'
+      ORDER BY child.relname;
+    `);
+
+    console.log(`Found ${res.rowCount} partitions.`);
+    res.rows.forEach(row => {
+      console.log(`- ${row.partition_name}`);
+    });
+
+    if (res.rowCount >= 30) {
+      console.log('SUCCESS: At least 30 partitions exist.');
+    } else {
+      console.warn(`WARNING: Expected 30+ partitions, found ${res.rowCount}.`);
+    }
+    
+    client.release();
+  } catch (err) {
+    console.error('Verification failed:', err);
+  } finally {
+    await pool.end();
+  }
+};
+
+verify();
--- a/bls-onoffline-backend/spec/onoffline-spec.md
+++ b/bls-onoffline-backend/spec/onoffline-spec.md
@@ -0,0 +1,41 @@
+bls-onoffline-backend 规格说明
+
+1. Kafka 数据结构
+{
+  "HotelCode": "1085",
+  "MAC": "00:1A:2B:3C:4D:5E",
+  "HostNumber": "091123987456",
+  "RoomNumber": "8888房",
+  "EndPoint": "50.2.60.1:6543",
+  "CurrentStatus": "on",
+  "CurrentTime": "2026-02-02T10:30:00Z",
+  "UnixTime": 1770000235000,
+  "LauncherVersion": "1.0.0",
+  "RebootReason": "1"
+}
+
+2. Kafka 主题
+Topic：blwlog4Nodejs-rcu-onoffline-topic
+
+3. 数据库结构
+数据库：log_platform
+表：onoffline_record
+字段：
+  guid varchar(32)
+  ts_ms int8
+  write_ts_ms int8
+  hotel_id int2
+  mac varchar(21)
+  device_id varchar(64)
+  room_id varchar(64)
+  ip varchar(21)
+  current_status varchar(10)
+  launcher_version varchar(10)
+  reboot_reason varchar(10)
+主键：（ts_ms, mac, device_id, room_id）
+按 ts_ms 每日分区
+
+4. 数据处理规则
+非重启数据：reboot_reason 为空或不存在，current_status 取 CurrentStatus
+重启数据：reboot_reason 不为空，current_status 固定为 on
+其余字段直接按 Kafka 原值落库，空值不补 0
--- a/bls-onoffline-backend/src/config/config.js
+++ b/bls-onoffline-backend/src/config/config.js
@@ -0,0 +1,56 @@
+import dotenv from 'dotenv';
+
+dotenv.config();
+
+const parseNumber = (value, defaultValue) => {
+  const parsed = Number(value);
+  return Number.isFinite(parsed) ? parsed : defaultValue;
+};
+
+const parseList = (value) =>
+  (value || '')
+    .split(',')
+    .map((item) => item.trim())
+    .filter(Boolean);
+
+export const config = {
+  env: process.env.NODE_ENV || 'development',
+  port: parseNumber(process.env.PORT, 3001),
+  kafka: {
+    brokers: parseList(process.env.KAFKA_BROKERS),
+    topic: process.env.KAFKA_TOPIC || process.env.KAFKA_TOPICS || 'blwlog4Nodejs-rcu-onoffline-topic',
+    groupId: process.env.KAFKA_GROUP_ID || 'bls-onoffline-group',
+    clientId: process.env.KAFKA_CLIENT_ID || 'bls-onoffline-client',
+    consumerInstances: parseNumber(process.env.KAFKA_CONSUMER_INSTANCES, 1),
+    maxInFlight: parseNumber(process.env.KAFKA_MAX_IN_FLIGHT, 50),
+    fetchMaxBytes: parseNumber(process.env.KAFKA_FETCH_MAX_BYTES, 10 * 1024 * 1024),
+    fetchMinBytes: parseNumber(process.env.KAFKA_FETCH_MIN_BYTES, 1),
+    fetchMaxWaitMs: parseNumber(process.env.KAFKA_FETCH_MAX_WAIT_MS, 100),
+    autoCommitIntervalMs: parseNumber(process.env.KAFKA_AUTO_COMMIT_INTERVAL_MS, 5000),
+    logMessages: process.env.KAFKA_LOG_MESSAGES === 'true',
+    sasl: process.env.KAFKA_SASL_USERNAME && process.env.KAFKA_SASL_PASSWORD ? {
+      mechanism: process.env.KAFKA_SASL_MECHANISM || 'plain',
+      username: process.env.KAFKA_SASL_USERNAME,
+      password: process.env.KAFKA_SASL_PASSWORD
+    } : undefined
+  },
+  db: {
+    host: process.env.DB_HOST || process.env.POSTGRES_HOST || 'localhost',
+    port: parseNumber(process.env.DB_PORT || process.env.POSTGRES_PORT, 5432),
+    user: process.env.DB_USER || process.env.POSTGRES_USER || 'postgres',
+    password: process.env.DB_PASSWORD || process.env.POSTGRES_PASSWORD || '',
+    database: process.env.DB_DATABASE || process.env.POSTGRES_DATABASE || 'log_platform',
+    max: parseNumber(process.env.DB_MAX_CONNECTIONS || process.env.POSTGRES_MAX_CONNECTIONS, 10),
+    ssl: process.env.DB_SSL === 'true' ? { rejectUnauthorized: false } : undefined,
+    schema: process.env.DB_SCHEMA || 'onoffline',
+    table: process.env.DB_TABLE || 'onoffline_record'
+  },
+  redis: {
+    host: process.env.REDIS_HOST || 'localhost',
+    port: parseNumber(process.env.REDIS_PORT, 6379),
+    password: process.env.REDIS_PASSWORD || undefined,
+    db: parseNumber(process.env.REDIS_DB, 0),
+    projectName: process.env.REDIS_PROJECT_NAME || 'bls-onoffline',
+    apiBaseUrl: process.env.REDIS_API_BASE_URL || `http://localhost:${parseNumber(process.env.PORT, 3001)}`
+  }
+};
--- a/bls-onoffline-backend/src/db/databaseManager.js
+++ b/bls-onoffline-backend/src/db/databaseManager.js
@@ -0,0 +1,103 @@
+import pg from 'pg';
+import { config } from '../config/config.js';
+import { logger } from '../utils/logger.js';
+
+const { Pool } = pg;
+
+const columns = [
+  'guid',
+  'ts_ms',
+  'write_ts_ms',
+  'hotel_id',
+  'mac',
+  'device_id',
+  'room_id',
+  'ip',
+  'current_status',
+  'launcher_version',
+  'reboot_reason'
+];
+
+export class DatabaseManager {
+  constructor(dbConfig) {
+    this.pool = new Pool({
+      host: dbConfig.host,
+      port: dbConfig.port,
+      user: dbConfig.user,
+      password: dbConfig.password,
+      database: dbConfig.database,
+      max: dbConfig.max,
+      ssl: dbConfig.ssl
+    });
+  }
+
+  async insertRows({ schema, table, rows }) {
+    if (!rows || rows.length === 0) {
+      return;
+    }
+    const values = [];
+    const placeholders = rows.map((row, rowIndex) => {
+      const offset = rowIndex * columns.length;
+      columns.forEach((column) => {
+        values.push(row[column] ?? null);
+      });
+      const params = columns.map((_, columnIndex) => `$${offset + columnIndex + 1}`);
+      return `(${params.join(', ')})`;
+    });
+    const statement = `
+      INSERT INTO ${schema}.${table} (${columns.join(', ')}) 
+      VALUES ${placeholders.join(', ')}
+      ON CONFLICT DO NOTHING
+    `;
+    try {
+      await this.pool.query(statement, values);
+    } catch (error) {
+      logger.error('Database insert failed', {
+        error: error?.message,
+        schema,
+        table,
+        rowsLength: rows.length
+      });
+      throw error;
+    }
+  }
+
+  async checkConnection() {
+    let client;
+    try {
+      const connectPromise = this.pool.connect();
+      
+      // Create a timeout promise that rejects after 5000ms
+      const timeoutPromise = new Promise((_, reject) => {
+        setTimeout(() => reject(new Error('Connection timeout')), 5000);
+      });
+
+      try {
+        // Race the connection attempt against the timeout
+        client = await Promise.race([connectPromise, timeoutPromise]);
+      } catch (raceError) {
+        // If we timed out, the connectPromise might still resolve later.
+        // We must ensure that if it does, the client is released back to the pool immediately.
+        connectPromise.then(c => c.release()).catch(() => {});
+        throw raceError;
+      }
+
+      await client.query('SELECT 1');
+      return true;
+    } catch (err) {
+      logger.error('Database check connection failed', { error: err.message });
+      return false;
+    } finally {
+      if (client) {
+        client.release();
+      }
+    }
+  }
+
+  async close() {
+    await this.pool.end();
+  }
+}
+
+const dbManager = new DatabaseManager(config.db);
+export default dbManager;
--- a/bls-onoffline-backend/src/db/initializer.js
+++ b/bls-onoffline-backend/src/db/initializer.js
@@ -0,0 +1,100 @@
+import pg from 'pg';
+import fs from 'fs';
+import path from 'path';
+import { fileURLToPath } from 'url';
+import { logger } from '../utils/logger.js';
+import partitionManager from './partitionManager.js';
+import dbManager from './databaseManager.js';
+import { config } from '../config/config.js';
+
+const __filename = fileURLToPath(import.meta.url);
+const __dirname = path.dirname(__filename);
+
+class DatabaseInitializer {
+  async initialize() {
+    logger.info('Starting database initialization check...');
+    
+    // 1. Check if database exists, create if not
+    await this.ensureDatabaseExists();
+
+    // 2. Initialize Schema and Parent Table (if not exists)
+    // Note: We need to use dbManager because it connects to the target database
+    await this.ensureSchemaAndTable();
+
+    // 3. Ensure Partitions for the next month
+    await partitionManager.ensurePartitions(30);
+    
+    console.log('Database initialization completed successfully.');
+    logger.info('Database initialization completed successfully.');
+  }
+
+  async ensureDatabaseExists() {
+    const { host, port, user, password, database, ssl } = config.db;
+    console.log(`Checking if database '${database}' exists at ${host}:${port}...`);
+
+    // Connect to 'postgres' database to check/create target database
+    const client = new pg.Client({
+      host,
+      port,
+      user,
+      password,
+      database: 'postgres',
+      ssl: ssl ? { rejectUnauthorized: false } : false
+    });
+
+    try {
+      await client.connect();
+      
+      const checkRes = await client.query(
+        `SELECT 1 FROM pg_database WHERE datname = $1`,
+        [database]
+      );
+
+      if (checkRes.rowCount === 0) {
+        logger.info(`Database '${database}' does not exist. Creating...`);
+        // CREATE DATABASE cannot run inside a transaction block
+        await client.query(`CREATE DATABASE "${database}"`);
+        console.log(`Database '${database}' created.`);
+        logger.info(`Database '${database}' created.`);
+      } else {
+        console.log(`Database '${database}' already exists.`);
+        logger.info(`Database '${database}' already exists.`);
+      }
+    } catch (err) {
+      logger.error('Error ensuring database exists:', err);
+      throw err;
+    } finally {
+      await client.end();
+    }
+  }
+
+  async ensureSchemaAndTable() {
+    // dbManager connects to the target database
+    const client = await dbManager.pool.connect();
+    try {
+      const sqlPathCandidates = [
+        path.resolve(process.cwd(), 'scripts/init_db.sql'),
+        path.resolve(__dirname, '../scripts/init_db.sql'),
+        path.resolve(__dirname, '../../scripts/init_db.sql')
+      ];
+      const sqlPath = sqlPathCandidates.find((candidate) => fs.existsSync(candidate));
+      if (!sqlPath) {
+        throw new Error(`init_db.sql not found. Candidates: ${sqlPathCandidates.join(' | ')}`);
+      }
+      const sql = fs.readFileSync(sqlPath, 'utf8');
+      
+      console.log(`Executing init_db.sql from ${sqlPath}...`);
+      logger.info('Executing init_db.sql...');
+      await client.query(sql);
+      console.log('Schema and parent table initialized.');
+      logger.info('Schema and parent table initialized.');
+    } catch (err) {
+      logger.error('Error initializing schema and table:', err);
+      throw err;
+    } finally {
+      client.release();
+    }
+  }
+}
+
+export default new DatabaseInitializer();
--- a/bls-onoffline-backend/src/db/partitionManager.js
+++ b/bls-onoffline-backend/src/db/partitionManager.js
@@ -0,0 +1,77 @@
+import { logger } from '../utils/logger.js';
+import { config } from '../config/config.js';
+import dbManager from './databaseManager.js';
+
+class PartitionManager {
+  /**
+   * Calculate the start and end timestamps (milliseconds) for a given date.
+   * @param {Date} date - The date to calculate for.
+   * @returns {Object} { startMs, endMs, partitionSuffix }
+   */
+  getPartitionInfo(date) {
+    const yyyy = date.getFullYear();
+    const mm = String(date.getMonth() + 1).padStart(2, '0');
+    const dd = String(date.getDate()).padStart(2, '0');
+    const partitionSuffix = `${yyyy}${mm}${dd}`;
+
+    const start = new Date(date);
+    start.setHours(0, 0, 0, 0);
+    const startMs = start.getTime();
+
+    const end = new Date(date);
+    end.setDate(end.getDate() + 1);
+    end.setHours(0, 0, 0, 0);
+    const endMs = end.getTime();
+
+    return { startMs, endMs, partitionSuffix };
+  }
+
+  /**
+   * Ensure partitions exist for the past M days and next N days.
+   * @param {number} daysAhead - Number of days to pre-create.
+   * @param {number} daysBack - Number of days to look back.
+   */
+  async ensurePartitions(daysAhead = 30, daysBack = 15) {
+    const client = await dbManager.pool.connect();
+    try {
+      logger.info(`Starting partition check for the past ${daysBack} days and next ${daysAhead} days...`);
+      console.log(`Starting partition check for the past ${daysBack} days and next ${daysAhead} days...`);
+      const now = new Date();
+
+      for (let i = -daysBack; i < daysAhead; i++) {
+        const targetDate = new Date(now);
+        targetDate.setDate(now.getDate() + i);
+
+        const { startMs, endMs, partitionSuffix } = this.getPartitionInfo(targetDate);
+        const schema = config.db.schema;
+        const table = config.db.table;
+        const partitionName = `${schema}.${table}_${partitionSuffix}`;
+
+        // Check if partition exists
+        const checkSql = `
+          SELECT to_regclass($1) as exists;
+        `;
+        const checkRes = await client.query(checkSql, [partitionName]);
+        
+        if (!checkRes.rows[0].exists) {
+          logger.info(`Creating partition ${partitionName} for range [${startMs}, ${endMs})`);
+          console.log(`Creating partition ${partitionName} for range [${startMs}, ${endMs})`);
+          const createSql = `
+            CREATE TABLE IF NOT EXISTS ${partitionName}
+            PARTITION OF ${schema}.${table}
+            FOR VALUES FROM (${startMs}) TO (${endMs});
+          `;
+          await client.query(createSql);
+        }
+      }
+      logger.info('Partition check completed.');
+    } catch (err) {
+      logger.error('Error ensuring partitions:', err);
+      throw err;
+    } finally {
+      client.release();
+    }
+  }
+}
+
+export default new PartitionManager();
--- a/bls-onoffline-backend/src/index.js
+++ b/bls-onoffline-backend/src/index.js
@@ -0,0 +1,268 @@
+import cron from 'node-cron';
+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 { createKafkaConsumers } from './kafka/consumer.js';
+import { processKafkaMessage } from './processor/index.js';
+import { createRedisClient } from './redis/redisClient.js';
+import { RedisIntegration } from './redis/redisIntegration.js';
+import { buildErrorQueueKey, enqueueError, startErrorRetryWorker } from './redis/errorQueue.js';
+import { MetricCollector } from './utils/metricCollector.js';
+import { logger } from './utils/logger.js';
+
+const bootstrap = async () => {
+  // Log startup config (masked)
+  logger.info('Starting application with config', {
+    env: process.env.NODE_ENV,
+    db: {
+      host: config.db.host,
+      port: config.db.port,
+      user: config.db.user,
+      database: config.db.database,
+      schema: config.db.schema
+    },
+    kafka: {
+      brokers: config.kafka.brokers,
+      topic: config.kafka.topic,
+      groupId: config.kafka.groupId
+    },
+    redis: {
+      host: config.redis.host,
+      port: config.redis.port
+    }
+  });
+
+  // 0. Initialize Database (Create DB, Schema, Table, Partitions)
+  await dbInitializer.initialize();
+
+  // Metric Collector
+  const metricCollector = new MetricCollector();
+
+  // 1. Setup Partition Maintenance Cron Job (Every day at 00:00)
+  cron.schedule('0 0 * * *', async () => {
+    logger.info('Running scheduled partition maintenance...');
+    try {
+      await partitionManager.ensurePartitions(30);
+    } catch (err) {
+      logger.error('Scheduled partition maintenance failed', err);
+    }
+  });
+
+  // 1.1 Setup Metric Reporting Cron Job (Every minute)
+  // Moved after redisIntegration initialization
+
+
+  // DatabaseManager is now a singleton exported instance, but let's keep consistency if possible
+  // In databaseManager.js it exports `dbManager` instance by default.
+  // The original code was `const dbManager = new DatabaseManager(config.db);` which implies it might have been a class export.
+  // Let's check `databaseManager.js` content. 
+  // Wait, I imported `dbManager` from `./db/databaseManager.js`.
+  // If `databaseManager.js` exports an instance as default, I should use that.
+  // If it exports a class, I should instantiate it.
+  
+  // Let's assume the previous code `new DatabaseManager` was correct if it was a class.
+  // BUT I used `dbManager.pool` in `partitionManager.js` assuming it's an instance.
+  // I need to verify `databaseManager.js`.
+
+  const redisClient = await createRedisClient(config.redis);
+  const redisIntegration = new RedisIntegration(
+    redisClient,
+    config.redis.projectName,
+    config.redis.apiBaseUrl
+  );
+  redisIntegration.startHeartbeat();
+
+  // 1.1 Setup Metric Reporting Cron Job (Every minute)
+  cron.schedule('* * * * *', async () => {
+    const metrics = metricCollector.getAndReset();
+    const report = `[Minute Metrics] Pulled: ${metrics.kafka_pulled}, Parse Error: ${metrics.parse_error}, Inserted: ${metrics.db_inserted}, Failed: ${metrics.db_failed}`;
+    console.log(report);
+    logger.info(report, metrics);
+    
+    try {
+      await redisIntegration.info('Minute Metrics', metrics);
+    } catch (err) {
+      logger.error('Failed to report metrics to Redis', { error: err?.message });
+    }
+  });
+
+  const errorQueueKey = buildErrorQueueKey(config.redis.projectName);
+
+  const handleError = async (error, message) => {
+    logger.error('Kafka processing error', {
+      error: error?.message,
+      type: error?.type,
+      stack: error?.stack
+    });
+    try {
+      await redisIntegration.error('Kafka processing error', {
+        module: 'kafka',
+        stack: error?.stack || error?.message
+      });
+    } catch (redisError) {
+      logger.error('Redis error log failed', { error: redisError?.message });
+    }
+    if (message) {
+      const messageValue = Buffer.isBuffer(message.value)
+        ? message.value.toString('utf8')
+        : message.value;
+      try {
+        await enqueueError(redisClient, errorQueueKey, {
+          attempts: 0,
+          value: messageValue,
+          meta: {
+            topic: message.topic,
+            partition: message.partition,
+            offset: message.offset,
+            key: message.key
+          },
+          timestamp: Date.now()
+        });
+      } catch (enqueueError) {
+        logger.error('Enqueue error payload failed', { error: enqueueError?.message });
+      }
+    }
+  };
+
+  const handleMessage = async (message) => {
+    if (message.topic) {
+      metricCollector.increment('kafka_pulled');
+    }
+    
+    const messageValue = Buffer.isBuffer(message.value)
+      ? message.value.toString('utf8')
+      : message.value;
+    const messageKey = Buffer.isBuffer(message.key)
+      ? message.key.toString('utf8')
+      : message.key;
+
+    const logDetails = {
+      topic: message.topic,
+      partition: message.partition,
+      offset: message.offset,
+      key: messageKey,
+      value: config.kafka.logMessages ? messageValue : undefined,
+      valueLength: !config.kafka.logMessages && typeof messageValue === 'string' ? messageValue.length : null
+    };
+    
+    // logger.info('Kafka message received', logDetails);
+
+    while (true) {
+      try {
+        const inserted = await processKafkaMessage({ message, dbManager, config });
+        metricCollector.increment('db_inserted');
+        // logger.info('Kafka message processed', { inserted });
+        return; // Success, allowing commit
+      } catch (error) {
+        // Identify DB connection errors
+        const isDbConnectionError = 
+          (error.code && ['ECONNREFUSED', '57P03', '08006', '08001', 'EADDRINUSE', 'ETIMEDOUT'].includes(error.code)) ||
+          (error.message && (
+            error.message.includes('ECONNREFUSED') || 
+            error.message.includes('connection') || 
+            error.message.includes('terminated') ||
+            error.message.includes('EADDRINUSE') ||
+            error.message.includes('ETIMEDOUT') ||
+            error.message.includes('The server does not support SSL connections') // Possible if DB restarts without SSL
+          ));
+
+        if (isDbConnectionError) {
+          logger.error('Database offline. Pausing consumption for 1 minute...', { error: error.message });
+          // metricCollector.increment('db_failed'); // Maybe not count as fail since we retry? User didn't specify.
+
+          // Wait 1 minute before checking
+          await new Promise(resolve => setTimeout(resolve, 60000));
+          
+          // Check connection loop
+          while (true) {
+             const isConnected = await dbManager.checkConnection();
+             if (isConnected) {
+               logger.info('Database connection restored. Resuming processing...');
+               break; // Break check loop to retry processing
+             }
+             logger.warn('Database still offline. Waiting 1 minute...');
+             await new Promise(resolve => setTimeout(resolve, 60000));
+          }
+        } else {
+          // Non-connection error (Data error, Parse error, etc.)
+          if (error.type === 'PARSE_ERROR') {
+            metricCollector.increment('parse_error');
+          } else {
+            metricCollector.increment('db_failed');
+          }
+          
+          logger.error('Message processing failed (Data/Logic Error), skipping message', {
+            error: error?.message,
+            type: error?.type
+          });
+          
+          // Enqueue to error queue
+          await handleError(error, message);
+          
+          // For non-connection errors, we must skip this message and commit the offset
+          // so we don't get stuck in an infinite retry loop.
+          return;
+        }
+      }
+    }
+  };
+
+  const consumers = createKafkaConsumers({
+    kafkaConfig: config.kafka,
+    onMessage: handleMessage,
+    onError: handleError
+  });
+
+  // Start retry worker (non-blocking)
+  startErrorRetryWorker({
+    client: redisClient,
+    queueKey: errorQueueKey,
+    redisIntegration,
+    handler: async (item) => {
+      if (!item?.value) {
+        throw new Error('Missing value in retry payload');
+      }
+      await handleMessage({ value: item.value });
+    }
+  }).catch(err => {
+    logger.error('Retry worker failed', { error: err?.message });
+  });
+
+  // Graceful Shutdown Logic
+  const shutdown = async (signal) => {
+    logger.info(`Received ${signal}, shutting down...`);
+    
+    try {
+      // 1. Close Kafka Consumer
+      if (consumers && consumers.length > 0) {
+        await Promise.all(consumers.map(c => new Promise((resolve) => c.close(true, resolve))));
+        logger.info('Kafka consumer closed', { count: consumers.length });
+      }
+
+      // 2. Stop Redis Heartbeat (if method exists, otherwise just close client)
+      // redisIntegration.stopHeartbeat(); // Assuming implementation or just rely on client close
+
+      // 3. Close Redis Client
+      await redisClient.quit();
+      logger.info('Redis client closed');
+
+      // 4. Close Database Pool
+      await dbManager.close();
+      logger.info('Database connection closed');
+
+      process.exit(0);
+    } catch (err) {
+      logger.error('Error during shutdown', { error: err?.message });
+      process.exit(1);
+    }
+  };
+
+  process.on('SIGTERM', () => shutdown('SIGTERM'));
+  process.on('SIGINT', () => shutdown('SIGINT'));
+};
+
+bootstrap().catch((error) => {
+  logger.error('Service bootstrap failed', { error: error?.message });
+  process.exit(1);
+});
--- a/bls-onoffline-backend/src/kafka/consumer.js
+++ b/bls-onoffline-backend/src/kafka/consumer.js
@@ -0,0 +1,140 @@
+import kafka from 'kafka-node';
+import { logger } from '../utils/logger.js';
+
+const { ConsumerGroup } = kafka;
+
+import { OffsetTracker } from './offsetTracker.js';
+
+const createOneConsumer = ({ kafkaConfig, onMessage, onError, instanceIndex }) => {
+  const kafkaHost = kafkaConfig.brokers.join(',');
+  const clientId = instanceIndex === 0 ? kafkaConfig.clientId : `${kafkaConfig.clientId}-${instanceIndex}`;
+  const id = `${clientId}-${process.pid}-${Date.now()}`;
+  const maxInFlight = Number.isFinite(kafkaConfig.maxInFlight) ? kafkaConfig.maxInFlight : 50;
+  let inFlight = 0;
+
+  const tracker = new OffsetTracker();
+
+  const consumer = new ConsumerGroup(
+    {
+      kafkaHost,
+      groupId: kafkaConfig.groupId,
+      clientId,
+      id,
+      fromOffset: 'earliest',
+      protocol: ['roundrobin'],
+      outOfRangeOffset: 'latest',
+      autoCommit: false,
+      autoCommitIntervalMs: kafkaConfig.autoCommitIntervalMs,
+      fetchMaxBytes: kafkaConfig.fetchMaxBytes,
+      fetchMinBytes: kafkaConfig.fetchMinBytes,
+      fetchMaxWaitMs: kafkaConfig.fetchMaxWaitMs,
+      sasl: kafkaConfig.sasl
+    },
+    kafkaConfig.topic
+  );
+
+  const tryResume = () => {
+    if (inFlight < maxInFlight && consumer.paused) {
+      consumer.resume();
+    }
+  };
+
+  consumer.on('message', (message) => {
+            inFlight += 1;
+    tracker.add(message.topic, message.partition, message.offset);
+
+    if (inFlight >= maxInFlight) {
+      consumer.pause();
+    }
+    Promise.resolve(onMessage(message))
+      .then(() => {
+        // Mark message as done and check if we can commit
+        const commitOffset = tracker.markDone(message.topic, message.partition, message.offset);
+        
+        if (commitOffset !== null) {
+                  consumer.sendOffsetCommitRequest([{
+                    topic: message.topic,
+                    partition: message.partition,
+                    offset: commitOffset,
+                    metadata: 'm'
+                  }], (err) => {
+                    if (err) {
+                      logger.error('Kafka commit failed', { error: err?.message, topic: message.topic, partition: message.partition, offset: commitOffset });
+                    }
+                  });
+                }
+      })
+      .catch((error) => {
+        logger.error('Kafka message handling failed', { error: error?.message });
+        if (onError) {
+          onError(error, message);
+        }
+      })
+      .finally(() => {
+        inFlight -= 1;
+        tryResume();
+      });
+  });
+
+  consumer.on('error', (error) => {
+    logger.error('Kafka consumer error', { error: error?.message });
+    if (onError) {
+      onError(error);
+    }
+  });
+
+  consumer.on('connect', () => {
+    logger.info(`Kafka Consumer connected`, {
+      groupId: kafkaConfig.groupId,
+      clientId: clientId
+    });
+  });
+
+  consumer.on('rebalancing', () => {
+    logger.info(`Kafka Consumer rebalancing`, {
+      groupId: kafkaConfig.groupId,
+      clientId: clientId
+    });
+  });
+
+  consumer.on('rebalanced', () => {
+    logger.info('Kafka Consumer rebalanced', { clientId, groupId: kafkaConfig.groupId });
+  });
+
+  consumer.on('error', (err) => {
+    logger.error('Kafka Consumer Error', { error: err.message });
+  });
+
+  consumer.on('offsetOutOfRange', (err) => {
+    logger.warn('Offset out of range', { error: err.message, topic: err.topic, partition: err.partition });
+  });
+
+
+  consumer.on('offsetOutOfRange', (error) => {
+    logger.warn(`Kafka Consumer offset out of range`, {
+      error: error?.message,
+      groupId: kafkaConfig.groupId,
+      clientId: clientId
+    });
+  });
+
+  consumer.on('close', () => {
+    logger.warn(`Kafka Consumer closed`, {
+      groupId: kafkaConfig.groupId,
+      clientId: clientId
+    });
+  });
+
+  return consumer;
+};
+
+export const createKafkaConsumers = ({ kafkaConfig, onMessage, onError }) => {
+  const instances = Number.isFinite(kafkaConfig.consumerInstances) ? kafkaConfig.consumerInstances : 1;
+  const count = Math.max(1, instances);
+  return Array.from({ length: count }, (_, idx) =>
+    createOneConsumer({ kafkaConfig, onMessage, onError, instanceIndex: idx })
+  );
+};
+
+export const createKafkaConsumer = ({ kafkaConfig, onMessage, onError }) =>
+  createKafkaConsumers({ kafkaConfig, onMessage, onError })[0];
--- a/bls-onoffline-backend/src/kafka/offsetTracker.js
+++ b/bls-onoffline-backend/src/kafka/offsetTracker.js
@@ -0,0 +1,45 @@
+export class OffsetTracker {
+  constructor() {
+    // Map<topic-partition, Array<{ offset: number, done: boolean }>>
+    this.partitions = new Map();
+  }
+
+  // Called when a message is received (before processing)
+  add(topic, partition, offset) {
+    const key = `${topic}-${partition}`;
+    if (!this.partitions.has(key)) {
+      this.partitions.set(key, []);
+    }
+    this.partitions.get(key).push({ offset, done: false });
+  }
+
+  // Called when a message is successfully processed
+  // Returns the next offset to commit (if any advancement is possible), or null
+  markDone(topic, partition, offset) {
+    const key = `${topic}-${partition}`;
+    const list = this.partitions.get(key);
+    if (!list) return null;
+
+    const item = list.find(i => i.offset === offset);
+    if (item) {
+      item.done = true;
+    }
+
+    // Find the highest continuous committed offset
+    // We can remove items from the front as long as they are done
+    let lastDoneOffset = null;
+    let itemsRemoved = false;
+    
+    while (list.length > 0 && list[0].done) {
+      lastDoneOffset = list[0].offset;
+      list.shift();
+      itemsRemoved = true;
+    }
+
+    if (itemsRemoved && lastDoneOffset !== null) {
+      return lastDoneOffset + 1; // Kafka expects the *next* offset to fetch
+    }
+    
+    return null;
+  }
+}
--- a/bls-onoffline-backend/src/processor/index.js
+++ b/bls-onoffline-backend/src/processor/index.js
@@ -0,0 +1,137 @@
+import { createGuid } from '../utils/uuid.js';
+import { kafkaPayloadSchema } from '../schema/kafkaPayload.js';
+
+const parseKafkaPayload = (value) => {
+  const raw = Buffer.isBuffer(value) ? value.toString('utf8') : value;
+  if (typeof raw !== 'string') {
+    throw new Error('Invalid kafka message value');
+  }
+  return JSON.parse(raw);
+};
+
+const normalizeText = (value, maxLength) => {
+  if (value === undefined || value === null) {
+    return null;
+  }
+  const str = String(value);
+  if (maxLength && str.length > maxLength) {
+    return str.substring(0, maxLength);
+  }
+  return str;
+};
+
+export const buildRowsFromMessageValue = (value) => {
+  const payload = parseKafkaPayload(value);
+  return buildRowsFromPayload(payload);
+};
+
+export const buildRowsFromPayload = (rawPayload) => {
+  const payload = kafkaPayloadSchema.parse(rawPayload);
+
+  // Database limit is VARCHAR(255)
+  const rebootReason = normalizeText(payload.RebootReason, 255);
+  const currentStatusRaw = normalizeText(payload.CurrentStatus, 255);
+  const hasRebootReason = rebootReason !== null && rebootReason !== '';
+  const currentStatus = hasRebootReason ? 'on' : currentStatusRaw;
+
+  // Derive timestamp: UnixTime -> CurrentTime -> Date.now()
+  let tsMs = payload.UnixTime;
+
+  // Heuristic: If timestamp is small (e.g., < 100000000000), assume it's seconds and convert to ms
+  if (typeof tsMs === 'number' && tsMs < 100000000000) {
+    tsMs = tsMs * 1000;
+  }
+
+  if (!tsMs && payload.CurrentTime) {
+    const parsed = Date.parse(payload.CurrentTime);
+    if (!isNaN(parsed)) {
+      tsMs = parsed;
+    }
+  }
+  if (!tsMs) {
+    tsMs = Date.now();
+  }
+
+  // Ensure PK fields are not null
+  const mac = normalizeText(payload.MAC) || '';
+  const deviceId = normalizeText(payload.HostNumber) || '';
+  const roomId = normalizeText(payload.RoomNumber) || '';
+
+  const row = {
+    guid: createGuid(),
+    ts_ms: tsMs,
+    write_ts_ms: Date.now(),
+    hotel_id: payload.HotelCode,
+    mac: mac,
+    device_id: deviceId,
+    room_id: roomId,
+    ip: normalizeText(payload.EndPoint),
+    current_status: currentStatus,
+    launcher_version: normalizeText(payload.LauncherVersion, 255),
+    reboot_reason: rebootReason
+  };
+
+  return [row];
+};
+
+export const processKafkaMessage = async ({ message, dbManager, config }) => {
+  let rows;
+  try {
+    const rawValue = message.value.toString();
+    // logger.info('Processing message', { offset: message.offset, rawValuePreview: rawValue.substring(0, 100) });
+
+    let payload;
+    try {
+      payload = JSON.parse(rawValue);
+    } catch (e) {
+      logger.error('JSON Parse Error', { error: e.message, rawValue });
+      const error = new Error(`JSON Parse Error: ${e.message}`);
+      error.type = 'PARSE_ERROR';
+      throw error;
+    }
+
+    // logger.info('Payload parsed', { payload });
+
+    const validationResult = kafkaPayloadSchema.safeParse(payload);
+    
+    if (!validationResult.success) {
+      logger.error('Schema Validation Failed', { 
+        errors: validationResult.error.errors, 
+        payload 
+      });
+      const error = new Error(`Schema Validation Failed: ${JSON.stringify(validationResult.error.errors)}`);
+      error.type = 'VALIDATION_ERROR';
+      throw error;
+    }
+
+    rows = buildRowsFromPayload(payload);
+  } catch (error) {
+    throw error;
+  }
+
+  try {
+    await dbManager.insertRows({ schema: config.db.schema, table: config.db.table, rows });
+    // if (rows.length > 0) {
+    //   console.log(`Inserted ${rows.length} rows. Sample GUID: ${rows[0].guid}, TS: ${rows[0].ts_ms}`);
+    // }
+  } catch (error) {
+    error.type = 'DB_ERROR';
+    const sample = rows?.[0];
+    error.dbContext = {
+      rowsLength: rows?.length || 0,
+      sampleRow: sample
+        ? {
+            guid: sample.guid,
+            ts_ms: sample.ts_ms,
+            mac: sample.mac,
+            device_id: sample.device_id,
+            room_id: sample.room_id,
+            current_status: sample.current_status
+          }
+        : null
+    };
+    throw error;
+  }
+
+  return rows.length;
+};
--- a/bls-onoffline-backend/src/processor/udpParser.js
+++ b/bls-onoffline-backend/src/processor/udpParser.js
@@ -0,0 +1,83 @@
+const normalizeHex = (hex) => {
+  if (typeof hex !== 'string') {
+    return '';
+  }
+  let cleaned = hex.trim().replace(/^0x/i, '').replace(/\s+/g, '');
+  if (cleaned.length % 2 === 1) {
+    cleaned = `0${cleaned}`;
+  }
+  return cleaned;
+};
+
+const toHex = (value) => `0x${value.toString(16).padStart(2, '0')}`;
+
+const readUInt16 = (buffer, offset) => buffer.readUInt16BE(offset);
+
+export const parse0x36 = (udpRaw) => {
+  const cleaned = normalizeHex(udpRaw);
+  const buffer = cleaned ? Buffer.from(cleaned, 'hex') : Buffer.alloc(0);
+  const sysLockStatus = buffer.length > 0 ? buffer[0] : null;
+  const reportCount = buffer.length > 7 ? buffer[7] : null;
+  let offset = 8;
+  const devices = [];
+  for (let i = 0; i < (reportCount || 0) && offset + 5 < buffer.length; i += 1) {
+    devices.push({
+      dev_type: buffer[offset],
+      dev_addr: buffer[offset + 1],
+      dev_loop: readUInt16(buffer, offset + 2),
+      dev_data: readUInt16(buffer, offset + 4)
+    });
+    offset += 6;
+  }
+  const faultCount = offset < buffer.length ? buffer[offset] : null;
+  offset += 1;
+  const faults = [];
+  for (let i = 0; i < (faultCount || 0) && offset + 5 < buffer.length; i += 1) {
+    faults.push({
+      fault_dev_type: buffer[offset],
+      fault_dev_addr: buffer[offset + 1],
+      fault_dev_loop: readUInt16(buffer, offset + 2),
+      error_type: buffer[offset + 4],
+      error_data: buffer[offset + 5]
+    });
+    offset += 6;
+  }
+  return {
+    sysLockStatus,
+    reportCount,
+    faultCount,
+    devices,
+    faults
+  };
+};
+
+export const parse0x0fDownlink = (udpRaw) => {
+  const cleaned = normalizeHex(udpRaw);
+  const buffer = cleaned ? Buffer.from(cleaned, 'hex') : Buffer.alloc(0);
+  const controlCount = buffer.length > 0 ? buffer[0] : null;
+  let offset = 1;
+  const controlParams = [];
+  for (let i = 0; i < (controlCount || 0) && offset + 5 < buffer.length; i += 1) {
+    const typeValue = readUInt16(buffer, offset + 4);
+    controlParams.push({
+      dev_type: buffer[offset],
+      dev_addr: buffer[offset + 1],
+      loop: readUInt16(buffer, offset + 2),
+      type: typeValue,
+      type_l: buffer[offset + 4],
+      type_h: buffer[offset + 5]
+    });
+    offset += 6;
+  }
+  return {
+    controlCount,
+    controlParams
+  };
+};
+
+export const parse0x0fAck = (udpRaw) => {
+  const cleaned = normalizeHex(udpRaw);
+  const buffer = cleaned ? Buffer.from(cleaned, 'hex') : Buffer.alloc(0);
+  const ackCode = buffer.length > 1 ? toHex(buffer[1]) : null;
+  return { ackCode };
+};
--- a/bls-onoffline-backend/src/redis/errorQueue.js
+++ b/bls-onoffline-backend/src/redis/errorQueue.js
@@ -0,0 +1,53 @@
+import { logger } from '../utils/logger.js';
+
+export const buildErrorQueueKey = (projectName) => `${projectName}_error_queue`;
+
+export const enqueueError = async (client, queueKey, payload) => {
+  try {
+    await client.rPush(queueKey, JSON.stringify(payload));
+  } catch (error) {
+    logger.error('Redis enqueue error failed', { error: error?.message });
+    throw error;
+  }
+};
+
+export const startErrorRetryWorker = async ({
+  client,
+  queueKey,
+  handler,
+  redisIntegration,
+  maxAttempts = 5
+}) => {
+  while (true) {
+    const result = await client.blPop(queueKey, 0);
+    const raw = result?.element;
+    if (!raw) {
+      continue;
+    }
+    let item;
+    try {
+      item = JSON.parse(raw);
+    } catch (error) {
+      logger.error('Invalid error payload', { error: error?.message });
+      await redisIntegration.error('Invalid error payload', { module: 'redis', stack: error?.message });
+      continue;
+    }
+    const attempts = item.attempts || 0;
+    try {
+      await handler(item);
+    } catch (error) {
+      logger.error('Retry handler failed', { error: error?.message, stack: error?.stack });
+      const nextPayload = {
+        ...item,
+        attempts: attempts + 1,
+        lastError: error?.message,
+        lastAttemptAt: Date.now()
+      };
+      if (nextPayload.attempts >= maxAttempts) {
+        await redisIntegration.error('Retry attempts exceeded', { module: 'retry', stack: JSON.stringify(nextPayload) });
+      } else {
+        await enqueueError(client, queueKey, nextPayload);
+      }
+    }
+  }
+};
--- a/bls-onoffline-backend/src/redis/redisClient.js
+++ b/bls-onoffline-backend/src/redis/redisClient.js
@@ -0,0 +1,14 @@
+import { createClient } from 'redis';
+
+export const createRedisClient = async (config) => {
+  const client = createClient({
+    socket: {
+      host: config.host,
+      port: config.port
+    },
+    password: config.password,
+    database: config.db
+  });
+  await client.connect();
+  return client;
+};
--- a/bls-onoffline-backend/src/redis/redisIntegration.js
+++ b/bls-onoffline-backend/src/redis/redisIntegration.js
@@ -0,0 +1,40 @@
+export class RedisIntegration {
+  constructor(client, projectName, apiBaseUrl) {
+    this.client = client;
+    this.projectName = projectName;
+    this.apiBaseUrl = apiBaseUrl;
+    this.heartbeatKey = '项目心跳';
+    this.logKey = `${projectName}_项目控制台`;
+  }
+
+  async info(message, context) {
+    const payload = {
+      timestamp: new Date().toISOString(),
+      level: 'info',
+      message,
+      metadata: context || undefined
+    };
+    await this.client.rPush(this.logKey, JSON.stringify(payload));
+  }
+
+  async error(message, context) {
+    const payload = {
+      timestamp: new Date().toISOString(),
+      level: 'error',
+      message,
+      metadata: context || undefined
+    };
+    await this.client.rPush(this.logKey, JSON.stringify(payload));
+  }
+
+  startHeartbeat() {
+    setInterval(() => {
+      const payload = {
+        projectName: this.projectName,
+        apiBaseUrl: this.apiBaseUrl,
+        lastActiveAt: Date.now()
+      };
+      this.client.rPush(this.heartbeatKey, JSON.stringify(payload));
+    }, 3000);
+  }
+}
--- a/bls-onoffline-backend/src/schema/kafkaPayload.js
+++ b/bls-onoffline-backend/src/schema/kafkaPayload.js
@@ -0,0 +1,32 @@
+import { z } from 'zod';
+
+const toNumber = (value) => {
+  if (value === undefined || value === null || value === '') {
+    return value;
+  }
+  if (typeof value === 'number') {
+    return value;
+  }
+  const parsed = Number(value);
+  return Number.isFinite(parsed) ? parsed : value;
+};
+
+const toStringAllowEmpty = (value) => {
+  if (value === undefined || value === null) {
+    return value;
+  }
+  return String(value);
+};
+
+export const kafkaPayloadSchema = z.object({
+  HotelCode: z.preprocess(toNumber, z.number()),
+  MAC: z.preprocess(toStringAllowEmpty, z.string().nullable()).optional().nullable(),
+  HostNumber: z.preprocess(toStringAllowEmpty, z.string().nullable()).optional().nullable(),
+  RoomNumber: z.preprocess(toStringAllowEmpty, z.string().nullable()).optional().nullable(),
+  EndPoint: z.preprocess(toStringAllowEmpty, z.string().nullable()).optional().nullable(),
+  CurrentStatus: z.preprocess(toStringAllowEmpty, z.string().nullable()).optional().nullable(),
+  CurrentTime: z.preprocess(toStringAllowEmpty, z.string().nullable()).optional().nullable(),
+  UnixTime: z.preprocess(toNumber, z.number().nullable()).optional().nullable(),
+  LauncherVersion: z.preprocess(toStringAllowEmpty, z.string().nullable()).optional().nullable(),
+  RebootReason: z.preprocess(toStringAllowEmpty, z.string().nullable()).optional().nullable()
+});
--- a/bls-onoffline-backend/src/utils/logger.js
+++ b/bls-onoffline-backend/src/utils/logger.js
@@ -0,0 +1,18 @@
+const format = (level, message, context) => {
+  const payload = {
+    level,
+    message,
+    timestamp: Date.now(),
+    ...(context ? { context } : {})
+  };
+  return JSON.stringify(payload);
+};
+
+export const logger = {
+  info(message, context) {
+    process.stdout.write(`${format('info', message, context)}\n`);
+  },
+  error(message, context) {
+    process.stderr.write(`${format('error', message, context)}\n`);
+  }
+};
--- a/bls-onoffline-backend/src/utils/metricCollector.js
+++ b/bls-onoffline-backend/src/utils/metricCollector.js
@@ -0,0 +1,26 @@
+export class MetricCollector {
+  constructor() {
+    this.reset();
+  }
+
+  reset() {
+    this.metrics = {
+      kafka_pulled: 0,
+      parse_error: 0,
+      db_inserted: 0,
+      db_failed: 0
+    };
+  }
+
+  increment(metric, count = 1) {
+    if (this.metrics.hasOwnProperty(metric)) {
+      this.metrics[metric] += count;
+    }
+  }
+
+  getAndReset() {
+    const current = { ...this.metrics };
+    this.reset();
+    return current;
+  }
+}
--- a/bls-onoffline-backend/src/utils/uuid.js
+++ b/bls-onoffline-backend/src/utils/uuid.js
@@ -0,0 +1,3 @@
+import { randomUUID } from 'crypto';
+
+export const createGuid = () => randomUUID().replace(/-/g, '');
--- a/bls-onoffline-backend/tests/processor.test.js
+++ b/bls-onoffline-backend/tests/processor.test.js
@@ -0,0 +1,45 @@
+import { describe, it, expect } from 'vitest';
+import { buildRowsFromPayload } from '../src/processor/index.js';
+
+describe('Processor Logic', () => {
+  const basePayload = {
+    HotelCode: '1085',
+    MAC: '00:1A:2B:3C:4D:5E',
+    HostNumber: '091123987456',
+    RoomNumber: '8888房',
+    EndPoint: '50.2.60.1:6543',
+    CurrentStatus: 'off',
+    CurrentTime: '2026-02-02T10:30:00Z',
+    UnixTime: 1770000235000,
+    LauncherVersion: '1.0.0'
+  };
+
+  it('should validate required fields', () => {
+    expect(() => buildRowsFromPayload({})).toThrow();
+    expect(() => buildRowsFromPayload({ ...basePayload, UnixTime: undefined })).toThrow();
+  });
+
+  it('should use current_status from payload for non-reboot data', () => {
+    const rows = buildRowsFromPayload({ ...basePayload, RebootReason: null });
+    expect(rows).toHaveLength(1);
+    expect(rows[0].current_status).toBe('off');
+    expect(rows[0].reboot_reason).toBeNull();
+  });
+
+  it('should override current_status to on for reboot data', () => {
+    const rows = buildRowsFromPayload({ ...basePayload, CurrentStatus: 'off', RebootReason: '0x01' });
+    expect(rows).toHaveLength(1);
+    expect(rows[0].current_status).toBe('on');
+    expect(rows[0].reboot_reason).toBe('0x01');
+  });
+
+  it('should keep empty optional fields as empty strings', () => {
+    const rows = buildRowsFromPayload({
+      ...basePayload,
+      LauncherVersion: '',
+      RebootReason: ''
+    });
+    expect(rows[0].launcher_version).toBe('');
+    expect(rows[0].reboot_reason).toBe('');
+  });
+});
--- a/bls-onoffline-backend/vite.config.js
+++ b/bls-onoffline-backend/vite.config.js
@@ -0,0 +1,12 @@
+import { defineConfig } from 'vite';
+
+export default defineConfig({
+  build: {
+    ssr: 'src/index.js',
+    outDir: 'dist',
+    target: 'node18',
+    rollupOptions: {
+      external: ['dotenv', 'kafka-node', 'pg', 'redis']
+    }
+  }
+});