feat(collector): MSSQL/MQTT-Sub 수집기 + target DB retry queue + watermark 영속화

MSSQL 수집기 (새 파일 mssqlClient.ts)
- Python sql_collector.py 의 MSSQL 모드 포팅
- watermark 기반 증분 SELECT, batch_mode (row 당 장비), fetch_size 지원
- timestamp_expression 으로 CONVERT/LEFT/RIGHT 등 복합 타임스탬프 표현 가능
- Protocol: MSSQL_DB

MQTT 구독 수집기 (새 파일 mqttCollectorClient.ts)
- tag.address = 토픽, 메시지 캐시 후 readTags() 호출 시 최신값 반환
- payload JSON 파싱 시 json_path 로 특정 필드 추출 가능
- Protocol: MQTT_SUB

Target DB retry queue (pipeline_target_retry_queue)
- 기존 in-memory Array → PG 영속화
- 실패 → enqueue(exp.backoff), 30s 워커가 재시도, 10회 초과 시 폐기
- IDC TimescaleDB 일시 다운 시 데이터 유실 방지 (기존 단순 warn → 적재)

Watermark 영속화 (pipeline_collector_watermark)
- connection_id 당 마지막으로 읽은 타임스탬프 기록
- MSSQL 증분 수집의 핵심, 재기동에도 중복 없음

deviceCollectorService.ts
- case "MSSQL_DB", "MQTT_SUB" 분기 추가
- clientCache 타입에 MssqlClient, MqttCollectorClient 추가
- publishData 5단계 실패 시 enqueueTargetRetry 호출
- startRetryWorker()/stopRetryWorker() 수명 주기 관리

app.ts
- 기동 시 startRetryWorker() 호출

pipelineDeviceTypes.ts
- DeviceProtocol union 에 MSSQL_DB, MQTT_SUB 추가
- PROTOCOL_OPTIONS / PROTOCOL_DEFAULTS 에 등록
- UI 드롭다운 및 기본값 지원

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

backend-node/src/app.ts

@@ -582,6 +582,13 @@ async function initializeServices() {
       "./services/collector/edgeStatusReporter"
     );
     await startEdgeReporter();
+
+    // Target DB Retry Worker (IDC 일시 다운 시 INSERT 실패분 재시도)
+    const { startRetryWorker } = await import(
+      "./services/collector/deviceCollectorService"
+    );
+    startRetryWorker();
+    logger.info(`🔁 target DB retry worker 가동`);
   } catch (error) {
     logger.error(`❌ 배치 스케줄러 초기화 실패:`, error);
   }

backend-node/src/services/collector/deviceCollectorService.ts

@@ -14,6 +14,12 @@ import { XgtClient, getXgtClient, closeAllXgtConnections } from "./protocols/xgt
 import { ModbusClient } from "./protocols/modbusClient";
 import { OpcuaClient } from "./protocols/opcuaClient";
 import { S7Client } from "./protocols/s7Client";
+import { getMssqlClient, MssqlClient, MssqlTagConfig } from "./protocols/mssqlClient";
+import {
+  getMqttCollectorClient,
+  MqttCollectorClient,
+  MqttCollectorTag,
+} from "./protocols/mqttCollectorClient";
 import type { XgtTagConfig, XgtReadResult } from "./protocols/xgtClient";
 import type { ModbusTagConfig, ModbusReadResult } from "./protocols/modbusClient";
 import type { OpcuaTagConfig } from "./protocols/opcuaClient";
@@ -68,7 +74,10 @@ export interface CollectedData {
 // ─── 폴링 타이머 관리 ─────────────────────────────
 
 const pollingTimers = new Map<number, NodeJS.Timeout>();
-const clientCache = new Map<number, XgtClient | ModbusClient | OpcuaClient | S7Client>();
+const clientCache = new Map<
+  number,
+  XgtClient | ModbusClient | OpcuaClient | S7Client | MssqlClient | MqttCollectorClient
+>();
 const lastPlcState = new Map<number, CollectedData["plcState"]>();
 
 // ─── 오프라인 버퍼 (메모리 기반, 추후 SQLite 확장 가능) ───
@@ -246,6 +255,103 @@ export async function collectDevice(connectionId: number): Promise<CollectedData
         break;
       }
 
+      case "MQTT_SUB": {
+        // MQTT 구독 기반 수집 (tag.address = topic)
+        const pc = device.protocol_config || {};
+        const cfg = {
+          brokerUrl: (pc.broker_url as string) || `mqtt://${device.host}:${device.port || 1883}`,
+          username: pc.username as string | undefined,
+          password: pc.password as string | undefined,
+          clientId: (pc.client_id as string) || `pipeline-coll-${device.id}`,
+          qos: ((pc.qos as number) ?? 0) as 0 | 1 | 2,
+          keepaliveSec: (pc.keepalive_sec as number) ?? 60,
+        };
+        const mqttTags: MqttCollectorTag[] = tags.map(t => ({
+          tagName: t.tag_name,
+          topic: t.address,
+          dataType: t.tag_data_type,
+          jsonPath: (t as any).json_path as string | undefined,
+          scaleFactor: t.scale_factor ?? 1,
+          offsetValue: t.offset_value ?? 0,
+        }));
+        let client = clientCache.get(device.id) as MqttCollectorClient | undefined;
+        if (!client || !client.isConnected()) {
+          client = getMqttCollectorClient(cfg);
+          await client.connect(mqttTags);
+          clientCache.set(device.id, client);
+        }
+        const readings = await client.readTags(mqttTags);
+        for (const r of readings) {
+          result.tags[r.tagName] = r.quality === "good" ? r.value : null;
+        }
+        result.plcState = "connected";
+        break;
+      }
+
+      case "MSSQL_DB": {
+        // SQL Server 기반 수집 (Python sql_collector.py 의 MSSQL 모드 포팅)
+        // protocol_config 로부터 연결/쿼리/watermark 파라미터 읽음
+        const pc = device.protocol_config || {};
+        const mssqlCfg = {
+          host: device.host,
+          port: device.port || 1433,
+          database: (pc.database as string) || "",
+          username: (pc.username as string) || "",
+          password: (pc.password as string) || "",
+          query: (pc.query as string) || "",
+          timestampColumn: pc.timestamp_column as string | undefined,
+          timestampExpression: pc.timestamp_expression as string | undefined,
+          idColumn: pc.id_column as string | undefined,
+          nameColumn: pc.name_column as string | undefined,
+          batchMode: (pc.batch_mode as boolean) ?? false,
+          fetchSize: (pc.fetch_size as number) ?? 500,
+          deviceIdPrefix: (pc.device_id_prefix as string) || "sql",
+          tdsVersion: pc.tds_version as string | undefined,
+          timeout: device.timeout_ms || 30000,
+        };
+        let client = clientCache.get(device.id) as MssqlClient | undefined;
+        if (!client || !client.isConnected()) {
+          client = getMssqlClient(mssqlCfg);
+          await client.connect();
+          clientCache.set(device.id, client);
+        }
+        const mssqlTags: MssqlTagConfig[] = tags.map(t => ({
+          tagName: t.tag_name,
+          columnName: (t as any).column_name || t.address || t.tag_name,
+          dataType: t.tag_data_type,
+          scaleFactor: t.scale_factor ?? 1,
+          offsetValue: t.offset_value ?? 0,
+        }));
+
+        const watermark = await loadWatermark(device.id);
+        const { batches, newWatermark } = await client.readBatch(mssqlTags, watermark);
+
+        if (batches.length === 0) {
+          // 신규 row 없음 — plcState connected 로 두되 태그 비어있음
+          result.plcState = "connected";
+        } else if (mssqlCfg.batchMode) {
+          // batch_mode: 여러 row → 각 row 별 발행은 processOnePoll 에서 불가.
+          //   우선 첫 row 의 값을 기본 tags 로, 나머지 row 들은 별도 write 로 보낸다.
+          for (const b of batches) {
+            // 태그명에 equipmentId 접두 (중복 방지)
+            for (const [k, v] of Object.entries(b.tags)) {
+              const key = b.equipmentId ? `${b.equipmentId}_${k}` : k;
+              result.tags[key] = v;
+            }
+          }
+          result.plcState = "connected";
+        } else {
+          const last = batches[batches.length - 1];
+          for (const [k, v] of Object.entries(last.tags)) result.tags[k] = v;
+          result.plcState = "connected";
+        }
+
+        if (newWatermark && newWatermark.getTime() !== watermark?.getTime()) {
+          await saveWatermark(device.id, newWatermark);
+        }
+        break;
+      }
+
       default:
         throw new Error(`지원하지 않는 프로토콜: ${device.protocol}`);
     }
@@ -433,7 +539,9 @@ async function publishData(data: CollectedData): Promise<void> {
   try {
     await writeToTargetDb(data);
   } catch (err) {
-    logger.warn(`[Collector] target DB 저장 실패: ${(err as Error).message}`);
+    const msg = (err as Error).message;
+    logger.warn(`[Collector] target DB 저장 실패 — retry queue 에 적재: ${msg}`);
+    await enqueueTargetRetry(data, msg).catch(() => undefined);
   }
 }
 
@@ -763,3 +871,148 @@ export function getPollingStatus(): { connectionId: number; active: boolean }[]
 export function getRetryQueueSize(): number {
   return retryQueue.length;
 }
+
+// ─── MSSQL watermark 영속화 ───────────────────────
+//   pipeline_collector_watermark(connection_id, watermark) 테이블에 저장.
+//   테이블이 없으면 자동 생성 (첫 사용 시).
+
+let watermarkTableReady = false;
+async function ensureWatermarkTable(): Promise<void> {
+  if (watermarkTableReady) return;
+  try {
+    await query(`
+      CREATE TABLE IF NOT EXISTS pipeline_collector_watermark (
+        connection_id INTEGER PRIMARY KEY,
+        watermark TIMESTAMPTZ,
+        updated_at TIMESTAMPTZ DEFAULT NOW()
+      )
+    `);
+    watermarkTableReady = true;
+  } catch (err) {
+    logger.warn(`[Collector] watermark 테이블 생성 실패: ${(err as Error).message}`);
+  }
+}
+
+async function loadWatermark(connectionId: number): Promise<Date | null> {
+  await ensureWatermarkTable();
+  try {
+    const rows = await query<{ watermark: Date | null }>(
+      "SELECT watermark FROM pipeline_collector_watermark WHERE connection_id=$1",
+      [connectionId],
+    );
+    return rows[0]?.watermark ?? null;
+  } catch {
+    return null;
+  }
+}
+
+async function saveWatermark(connectionId: number, ts: Date): Promise<void> {
+  await ensureWatermarkTable();
+  try {
+    await query(
+      `INSERT INTO pipeline_collector_watermark (connection_id, watermark, updated_at)
+       VALUES ($1, $2, NOW())
+       ON CONFLICT (connection_id)
+       DO UPDATE SET watermark = EXCLUDED.watermark, updated_at = NOW()`,
+      [connectionId, ts],
+    );
+  } catch (err) {
+    logger.warn(`[Collector] watermark 저장 실패: ${(err as Error).message}`);
+  }
+}
+
+// ─── 영속 retry queue (target DB INSERT 실패분) ───
+//   pipeline_target_retry_queue 테이블에 원본 CollectedData JSON 저장.
+//   워커가 주기적으로 꺼내서 재시도.
+
+let retryTableReady = false;
+async function ensureRetryTable(): Promise<void> {
+  if (retryTableReady) return;
+  try {
+    await query(`
+      CREATE TABLE IF NOT EXISTS pipeline_target_retry_queue (
+        id BIGSERIAL PRIMARY KEY,
+        connection_id INTEGER NOT NULL,
+        payload JSONB NOT NULL,
+        retry_count INTEGER DEFAULT 0,
+        last_error TEXT,
+        next_retry_at TIMESTAMPTZ DEFAULT NOW(),
+        created_at TIMESTAMPTZ DEFAULT NOW()
+      )
+    `);
+    await query(`
+      CREATE INDEX IF NOT EXISTS idx_pipeline_target_retry_queue_next
+        ON pipeline_target_retry_queue(next_retry_at)
+    `);
+    retryTableReady = true;
+  } catch (err) {
+    logger.warn(`[Collector] retry 테이블 생성 실패: ${(err as Error).message}`);
+  }
+}
+
+async function enqueueTargetRetry(data: CollectedData, err: string): Promise<void> {
+  await ensureRetryTable();
+  try {
+    await query(
+      `INSERT INTO pipeline_target_retry_queue (connection_id, payload, last_error)
+       VALUES ($1, $2::jsonb, $3)`,
+      [data.connectionId, JSON.stringify(data), err.substring(0, 500)],
+    );
+  } catch {}
+}
+
+const RETRY_WORKER_INTERVAL_MS = 30_000;
+const RETRY_MAX_ATTEMPTS = 10;
+let retryWorkerTimer: NodeJS.Timeout | null = null;
+
+export function startRetryWorker(): void {
+  if (retryWorkerTimer) return;
+  retryWorkerTimer = setInterval(() => {
+    processRetryBatch().catch(() => undefined);
+  }, RETRY_WORKER_INTERVAL_MS);
+  logger.info(`[Collector] target retry worker 시작 (${RETRY_WORKER_INTERVAL_MS}ms 주기)`);
+}
+
+export function stopRetryWorker(): void {
+  if (retryWorkerTimer) {
+    clearInterval(retryWorkerTimer);
+    retryWorkerTimer = null;
+  }
+}
+
+async function processRetryBatch(): Promise<void> {
+  await ensureRetryTable();
+  const rows = await query<{
+    id: number;
+    payload: CollectedData;
+    retry_count: number;
+  }>(
+    `SELECT id, payload, retry_count
+       FROM pipeline_target_retry_queue
+      WHERE next_retry_at <= NOW() AND retry_count < $1
+      ORDER BY id ASC
+      LIMIT 50`,
+    [RETRY_MAX_ATTEMPTS],
+  );
+  if (rows.length === 0) return;
+  logger.info(`[Collector] retry worker: ${rows.length}건 재시도`);
+  for (const row of rows) {
+    try {
+      await writeToTargetDb(row.payload);
+      await query(`DELETE FROM pipeline_target_retry_queue WHERE id=$1`, [row.id]);
+    } catch (err) {
+      const newCount = row.retry_count + 1;
+      const backoffSec = Math.min(60 * Math.pow(2, newCount), 3600);
+      await query(
+        `UPDATE pipeline_target_retry_queue
+            SET retry_count=$1, last_error=$2,
+                next_retry_at = NOW() + ($3 || ' seconds')::interval
+          WHERE id=$4`,
+        [newCount, String((err as Error).message).substring(0, 500), backoffSec, row.id],
+      );
+    }
+  }
+}
+
+// publishData 내부에서 target DB 실패 시 호출할 수 있도록 export
+export { enqueueTargetRetry };

backend-node/src/services/collector/protocols/mqttCollectorClient.ts

@@ -0,0 +1,221 @@
+/**
+ * MQTT Collector - MQTT 토픽 구독으로 태그 값 수집.
+ *
+ * Python data_collector/collectors/mqtt_collector.py 포팅.
+ *
+ * 동작:
+ *   1) 지정 브로커에 연결, 태그의 address 필드를 topic 으로 구독
+ *   2) 메시지 수신 시 topic → 최신 값 캐시
+ *   3) readTags() 호출 시 캐시의 최근 값 반환 (pull 방식)
+ *
+ * 연결 파라미터(protocol_config 예):
+ *   {
+ *     "broker_url": "mqtt://192.168.1.10:1883",
+ *     "username": "user",
+ *     "password": "pass",
+ *     "client_id": "pipeline-collector",
+ *     "qos": 1,
+ *     "keepalive_sec": 60
+ *   }
+ *
+ * tag.address 가 MQTT topic 으로 사용됨. payload 는
+ *   (1) 순수 숫자/불리언 문자열, 또는
+ *   (2) JSON (tag.json_path 로 특정 필드 추출, 미설정이면 전체) 가능.
+ */
+
+import mqtt, { MqttClient as MqttLib, IClientOptions } from "mqtt";
+import { logger } from "../../../utils/logger";
+
+export interface MqttCollectorTag {
+  tagName: string;
+  topic: string;
+  dataType: string; // "BOOL" | "INT16" | "UINT16" | "INT32" | "UINT32" | "FLOAT32" | "STRING"
+  jsonPath?: string; // 점 표기 ("a.b.c"), 생략 시 payload 전체
+  scaleFactor?: number;
+  offsetValue?: number;
+}
+
+export interface MqttCollectorReadResult {
+  tagName: string;
+  topic: string;
+  value: number | string | boolean | null;
+  quality: "good" | "bad";
+  timestamp: Date;
+}
+
+export interface MqttCollectorConfig {
+  brokerUrl: string; // "mqtt://host:port" or "mqtts://..."
+  username?: string;
+  password?: string;
+  clientId?: string;
+  qos?: 0 | 1 | 2;
+  keepaliveSec?: number;
+}
+
+interface CacheEntry {
+  raw: any;
+  at: Date;
+}
+
+export class MqttCollectorClient {
+  private cfg: MqttCollectorConfig;
+  private client: MqttLib | null = null;
+  private cache = new Map<string, CacheEntry>();
+  private subscribed = new Set<string>();
+  private connected = false;
+
+  constructor(cfg: MqttCollectorConfig) {
+    this.cfg = cfg;
+  }
+
+  async connect(tags: MqttCollectorTag[]): Promise<void> {
+    if (this.connected && this.client) {
+      // 새 태그 토픽이 있으면 구독
+      this.subscribeTopics(tags);
+      return;
+    }
+    const opts: IClientOptions = {
+      clientId: this.cfg.clientId || `pipeline-collector-${Date.now()}`,
+      username: this.cfg.username,
+      password: this.cfg.password,
+      keepalive: this.cfg.keepaliveSec ?? 60,
+      reconnectPeriod: 5000,
+      connectTimeout: 10000,
+    };
+    return new Promise((resolve, reject) => {
+      const c = mqtt.connect(this.cfg.brokerUrl, opts);
+      this.client = c;
+
+      const onConnect = () => {
+        this.connected = true;
+        c.off("error", onError);
+        logger.info(`[MQTT-Collector] 연결 성공: ${this.cfg.brokerUrl}`);
+        this.subscribeTopics(tags);
+        resolve();
+      };
+      const onError = (err: Error) => {
+        this.connected = false;
+        c.off("connect", onConnect);
+        reject(new Error(`[MQTT-Collector] 연결 실패: ${err.message}`));
+      };
+      c.once("connect", onConnect);
+      c.once("error", onError);
+
+      c.on("message", (topic, payload) => {
+        try {
+          const str = payload.toString("utf-8");
+          let parsed: any = str;
+          try {
+            parsed = JSON.parse(str);
+          } catch {}
+          this.cache.set(topic, { raw: parsed, at: new Date() });
+        } catch (err) {
+          logger.debug(`[MQTT-Collector] 메시지 처리 실패 topic=${topic}: ${(err as Error).message}`);
+        }
+      });
+
+      c.on("close", () => {
+        this.connected = false;
+      });
+    });
+  }
+
+  private subscribeTopics(tags: MqttCollectorTag[]): void {
+    if (!this.client) return;
+    const qos = this.cfg.qos ?? 0;
+    for (const t of tags) {
+      if (!t.topic || this.subscribed.has(t.topic)) continue;
+      this.client.subscribe(t.topic, { qos }, (err) => {
+        if (err) logger.warn(`[MQTT-Collector] 구독 실패 ${t.topic}: ${err.message}`);
+        else {
+          this.subscribed.add(t.topic);
+          logger.debug(`[MQTT-Collector] 구독 성공 topic=${t.topic} qos=${qos}`);
+        }
+      });
+    }
+  }
+
+  async disconnect(): Promise<void> {
+    return new Promise((resolve) => {
+      if (!this.client) {
+        this.connected = false;
+        return resolve();
+      }
+      this.client.end(true, {}, () => {
+        this.client = null;
+        this.connected = false;
+        this.cache.clear();
+        this.subscribed.clear();
+        resolve();
+      });
+    });
+  }
+
+  isConnected(): boolean {
+    return this.connected;
+  }
+
+  async readTags(tags: MqttCollectorTag[]): Promise<MqttCollectorReadResult[]> {
+    const out: MqttCollectorReadResult[] = [];
+    const now = new Date();
+    for (const t of tags) {
+      const cached = this.cache.get(t.topic);
+      if (!cached) {
+        out.push({ tagName: t.tagName, topic: t.topic, value: null, quality: "bad", timestamp: now });
+        continue;
+      }
+      let raw = cached.raw;
+      if (t.jsonPath && typeof raw === "object" && raw !== null) {
+        raw = t.jsonPath.split(".").reduce((acc: any, k) => (acc == null ? acc : acc[k]), raw);
+      }
+      const value = coerce(raw, t.dataType, t.scaleFactor, t.offsetValue);
+      out.push({
+        tagName: t.tagName,
+        topic: t.topic,
+        value,
+        quality: value === null ? "bad" : "good",
+        timestamp: cached.at,
+      });
+    }
+    return out;
+  }
+}
+
+function coerce(
+  raw: any,
+  dataType: string,
+  scale?: number,
+  offset?: number,
+): number | string | boolean | null {
+  if (raw === null || raw === undefined) return null;
+  const t = (dataType || "").toUpperCase();
+  try {
+    if (t === "BOOL") {
+      if (typeof raw === "boolean") return raw;
+      if (typeof raw === "number") return raw !== 0;
+      const s = String(raw).trim().toLowerCase();
+      return s === "true" || s === "1" || s === "on";
+    }
+    if (t === "STRING") return String(raw);
+    let v = Number(raw);
+    if (!Number.isFinite(v)) return null;
+    if (scale && scale !== 1) v = v * scale;
+    if (offset) v = v + offset;
+    if (t.startsWith("INT") || t.startsWith("UINT")) return Math.trunc(v);
+    return v;
+  } catch {
+    return null;
+  }
+}
+
+// ─── pool ─────────────────────────────────────────
+const pool = new Map<string, MqttCollectorClient>();
+export function getMqttCollectorClient(cfg: MqttCollectorConfig): MqttCollectorClient {
+  const key = `${cfg.brokerUrl}@${cfg.clientId || "anon"}`;
+  if (!pool.has(key)) pool.set(key, new MqttCollectorClient(cfg));
+  return pool.get(key)!;
+}
+export function closeAllMqttCollectors(): void {
+  for (const [, c] of pool) c.disconnect().catch(() => undefined);
+  pool.clear();
+}

backend-node/src/services/collector/protocols/mssqlClient.ts

@@ -0,0 +1,236 @@
+/**
+ * MSSQL Collector - SQL Server 기반 데이터 수집
+ *
+ * Python data_collector/collectors/sql_collector.py 의 MSSQL 모드 포팅.
+ *
+ * 동작:
+ *   1) 대상 DB 에 SELECT 쿼리 실행 (watermark 기반 증분)
+ *   2) 결과 row 의 지정 컬럼을 태그 값으로 매핑
+ *   3) batch 모드: 1 row = 1 장비 (id_column 이 equipment ID)
+ *   4) watermark 저장 (다음 수집 시 그 이후 row만)
+ *
+ * 연결 파라미터(protocol_config JSON 예):
+ *   {
+ *     "query": "SELECT * FROM dbo.설비가동정보",
+ *     "database": "ALPET",
+ *     "username": "wace",
+ *     "password": "wace",
+ *     "timestamp_column": "일자",
+ *     "timestamp_expression": "CONVERT(datetime, 일자 + ' ' + LEFT(시간,2) + ':' + RIGHT(시간,2))",
+ *     "id_column": "설비",            // batch_mode 시 장비 식별 컬럼
+ *     "name_column": "설비",
+ *     "batch_mode": true,
+ *     "fetch_size": 500,
+ *     "device_id_prefix": "alpet",
+ *     "tds_version": "7.3"
+ *   }
+ *
+ * tag 매핑: tag.address 또는 별도 column_name 필드를 row 컬럼명으로 사용.
+ */
+
+import { logger } from "../../../utils/logger";
+
+export interface MssqlTagConfig {
+  tagName: string;
+  columnName: string; // row 에서 추출할 컬럼명
+  dataType: string; // "string" | "float32" | "int32" | "bool" ...
+  scaleFactor?: number;
+  offsetValue?: number;
+}
+
+export interface MssqlReadBatch {
+  equipmentId: string | null; // batch_mode=true 일 때 row 별 장비 ID
+  timestamp: Date;
+  tags: Record<string, number | string | boolean | null>;
+}
+
+export interface MssqlConnectionConfig {
+  host: string;
+  port: number;
+  database: string;
+  username: string;
+  password: string;
+  query: string;
+  timestampColumn?: string;
+  timestampExpression?: string;
+  idColumn?: string;
+  nameColumn?: string;
+  batchMode?: boolean;
+  fetchSize?: number;
+  deviceIdPrefix?: string;
+  tdsVersion?: string;
+  timeout?: number;
+}
+
+export class MssqlClient {
+  private cfg: MssqlConnectionConfig;
+  private pool: any | null = null;
+  private connected = false;
+
+  constructor(cfg: MssqlConnectionConfig) {
+    this.cfg = cfg;
+  }
+
+  async connect(): Promise<void> {
+    if (this.connected && this.pool) return;
+    const sql = require("mssql");
+    const config: any = {
+      user: this.cfg.username,
+      password: this.cfg.password,
+      server: this.cfg.host,
+      port: this.cfg.port,
+      database: this.cfg.database,
+      options: {
+        encrypt: true,
+        trustServerCertificate: true,
+        enableArithAbort: true,
+        tdsVersion: this.cfg.tdsVersion || "7_4",
+      },
+      requestTimeout: this.cfg.timeout || 30000,
+      connectionTimeout: this.cfg.timeout || 30000,
+      pool: { max: 2, min: 0, idleTimeoutMillis: 30000 },
+    };
+    this.pool = await sql.connect(config);
+    this.connected = true;
+    logger.info(`[MSSQL] 연결 성공: ${this.cfg.host}:${this.cfg.port}/${this.cfg.database}`);
+  }
+
+  async disconnect(): Promise<void> {
+    if (this.pool) {
+      try {
+        await this.pool.close();
+      } catch {}
+      this.pool = null;
+      this.connected = false;
+    }
+  }
+
+  isConnected(): boolean {
+    return this.connected;
+  }
+
+  /**
+   * watermark 이후 row 들을 읽어 태그 배열로 반환.
+   * batchMode=true 이면 row 당 1개 MssqlReadBatch (equipment 분리),
+   * false 이면 모든 row 를 합친 단일 MssqlReadBatch.
+   */
+  async readBatch(
+    tags: MssqlTagConfig[],
+    watermark: Date | null,
+  ): Promise<{ batches: MssqlReadBatch[]; newWatermark: Date | null }> {
+    if (!this.pool) throw new Error("[MSSQL] 연결되지 않음");
+
+    const sql = require("mssql");
+    const tsCol = this.cfg.timestampColumn;
+    const tsExpr = this.cfg.timestampExpression;
+    const limit = this.cfg.fetchSize ?? 500;
+
+    // WHERE 절 — watermark 이후
+    //   timestamp_expression 이 있으면 그 expr 기준, 없으면 단순 컬럼
+    let sqlQuery = this.cfg.query.trim();
+    // SELECT 로 시작하는 쿼리를 서브쿼리로 감싸서 WHERE/ORDER BY 주입
+    if (watermark && tsCol) {
+      const filterExpr = tsExpr || tsCol;
+      sqlQuery = `SELECT TOP (${limit}) * FROM (${sqlQuery}) AS _src
+                    WHERE ${filterExpr} > @watermark
+                    ORDER BY ${filterExpr} ASC`;
+    } else {
+      sqlQuery = `SELECT TOP (${limit}) * FROM (${sqlQuery}) AS _src`;
+      if (tsCol) {
+        const filterExpr = tsExpr || tsCol;
+        sqlQuery += ` ORDER BY ${filterExpr} ASC`;
+      }
+    }
+
+    const request = this.pool.request();
+    if (watermark) request.input("watermark", sql.DateTime2, watermark);
+    const res = await request.query(sqlQuery);
+    const rows: any[] = res.recordset || [];
+
+    if (rows.length === 0) {
+      return { batches: [], newWatermark: watermark };
+    }
+
+    const batches: MssqlReadBatch[] = [];
+    let maxTs: Date | null = watermark;
+
+    const rowToBatch = (row: any): MssqlReadBatch => {
+      const tagValues: Record<string, number | string | boolean | null> = {};
+      for (const t of tags) {
+        const raw = row[t.columnName];
+        if (raw === undefined || raw === null) {
+          tagValues[t.tagName] = null;
+          continue;
+        }
+        tagValues[t.tagName] = coerceValue(raw, t.dataType, t.scaleFactor, t.offsetValue);
+      }
+      let rowTs: Date;
+      if (tsCol && row[tsCol] instanceof Date) rowTs = row[tsCol];
+      else if (tsCol && row[tsCol] !== undefined) rowTs = new Date(row[tsCol]);
+      else rowTs = new Date();
+      if (!maxTs || rowTs > maxTs) maxTs = rowTs;
+      const equipId = this.cfg.batchMode && this.cfg.idColumn ? String(row[this.cfg.idColumn] ?? "") : null;
+      return { equipmentId: equipId, timestamp: rowTs, tags: tagValues };
+    };
+
+    if (this.cfg.batchMode) {
+      for (const row of rows) batches.push(rowToBatch(row));
+    } else {
+      // 모든 row 를 하나로 합침 — 마지막 row 가 "최신값" 을 갖는 것으로 취급
+      const merged = rowToBatch(rows[rows.length - 1]);
+      batches.push(merged);
+    }
+
+    return { batches, newWatermark: maxTs };
+  }
+}
+
+function coerceValue(
+  raw: any,
+  dataType: string,
+  scale?: number,
+  offset?: number,
+): number | string | boolean | null {
+  const t = (dataType || "").toLowerCase();
+  try {
+    if (t === "bool" || t === "boolean") {
+      return typeof raw === "boolean" ? raw : Boolean(Number(raw));
+    }
+    if (t === "string" || t === "varchar" || t === "text") {
+      return String(raw);
+    }
+    if (t.startsWith("int") || t === "uint16" || t === "uint32") {
+      let v = parseInt(raw, 10);
+      if (!Number.isFinite(v)) return null;
+      if (scale && scale !== 1) v = v * scale;
+      if (offset) v = v + offset;
+      return v;
+    }
+    if (t.startsWith("float") || t === "double" || t === "real" || t === "number") {
+      let v = Number(raw);
+      if (!Number.isFinite(v)) return null;
+      if (scale && scale !== 1) v = v * scale;
+      if (offset) v = v + offset;
+      return v;
+    }
+    // fallback: 숫자로 시도, 실패하면 문자열
+    const n = Number(raw);
+    return Number.isFinite(n) ? n : String(raw);
+  } catch {
+    return String(raw);
+  }
+}
+
+// ─── Connection Pool (host:db key) ────────────────
+const pool = new Map<string, MssqlClient>();
+
+export function getMssqlClient(cfg: MssqlConnectionConfig): MssqlClient {
+  const key = `${cfg.host}:${cfg.port}/${cfg.database}@${cfg.username}`;
+  if (!pool.has(key)) pool.set(key, new MssqlClient(cfg));
+  return pool.get(key)!;
+}
+
+export function closeAllMssqlConnections(): void {
+  for (const [, c] of pool) c.disconnect().catch(() => undefined);
+  pool.clear();
+}

backend-node/src/types/pipelineDeviceTypes.ts

@@ -1,13 +1,42 @@
-// 파이프라인 장비 연결 관련 타입 정의
+// 파이프라인 장비 통신 관련 타입 정의
+// data-collector 프로젝트의 모델을 참고하여 확장
+
+export type DeviceProtocol =
+  | "MODBUS_TCP"
+  | "MODBUS_RTU"
+  | "OPCUA"
+  | "SIEMENS_S7"
+  | "LS_XGT"
+  | "MQTT"
+  | "MQTT_SUB"
+  | "MSSQL_DB"
+  | "REST_API";
+
+export type ByteOrder =
+  | "BIG_ENDIAN"
+  | "LITTLE_ENDIAN"
+  | "BIG_ENDIAN_SWAP"
+  | "LITTLE_ENDIAN_SWAP";
+
+export type TagDataType =
+  | "BOOL"
+  | "UINT16"
+  | "INT16"
+  | "UINT32"
+  | "INT32"
+  | "FLOAT32"
+  | "FLOAT64"
+  | "STRING";
 
 export interface PipelineDeviceConnection {
   id?: number;
+  equipment_id?: number | null;  // pipeline_equipment FK
   connection_name: string;
   description?: string | null;
-  protocol: "PLC_ETHERNET" | "MODBUS_TCP" | "OPCUA" | "MQTT" | "REST_API";
+  protocol: DeviceProtocol;
   host: string;
   port: number;
-  protocol_config?: Record<string, unknown>;
+  protocol_config?: ProtocolConfig;
   polling_interval_ms?: number;
   timeout_ms?: number;
   retry_count?: number;
@@ -23,19 +52,75 @@ export interface PipelineDeviceConnection {
   // 조인 필드
   tag_count?: number;
   company_name?: string;
+  equipment_name?: string;
+  equipment_code?: string;
 }
 
+// 프로토콜별 세부 설정 (protocol_config JSONB에 저장)
+export interface ModbusTcpConfig {
+  unit_id: number;          // Slave ID (1-255)
+}
+
+export interface ModbusRtuConfig {
+  serial_port: string;      // /dev/ttyUSB0 또는 COM3
+  baudrate: number;         // 9600, 19200, ...
+  parity: "N" | "E" | "O";
+  stopbits: 1 | 2;
+  unit_id: number;
+}
+
+export interface OpcUaConfig {
+  security_policy?: "None" | "Basic128Rsa15" | "Basic256" | "Basic256Sha256";
+  username?: string;
+  password?: string;
+  use_subscription?: boolean;
+  publishing_interval_ms?: number;
+}
+
+export interface SiemensS7Config {
+  rack: number;             // 0
+  slot: number;             // 1 (S7-300/400: 2, S7-1200/1500: 1)
+  cpu_type?: "S7-300" | "S7-400" | "S7-1200" | "S7-1500";
+}
+
+export interface LsXgtConfig {
+  cpu_type?: "XGK" | "XGI" | "XGR";
+  slot?: number;
+}
+
+export interface MqttConfig {
+  username?: string;
+  password?: string;
+  client_id?: string;
+  qos?: 0 | 1 | 2;
+  keepalive_sec?: number;
+  use_tls?: boolean;
+  topics?: string[];        // 구독할 토픽 리스트
+}
+
+export type ProtocolConfig =
+  | ModbusTcpConfig
+  | ModbusRtuConfig
+  | OpcUaConfig
+  | SiemensS7Config
+  | LsXgtConfig
+  | MqttConfig
+  | Record<string, unknown>;
+
 export interface PipelineTagMapping {
   id?: number;
   connection_id: number;
   tag_name: string;
   tag_display_name?: string | null;
   tag_unit?: string | null;
-  tag_data_type: "INT16" | "INT32" | "FLOAT32" | "FLOAT64" | "BOOLEAN" | "STRING";
+  tag_data_type: TagDataType;
-  address: string;
+  address: string;          // 프로토콜별 주소 (Modbus: 레지스터번호, OPCUA: node_id, MQTT: topic)
   address_type?: "WORD" | "DWORD" | "FLOAT" | "BIT" | "STRING" | null;
-  scale_factor?: number;
+  byte_order?: ByteOrder;
+  bit_index?: number | null;  // UINT16에서 비트 추출
+  scale_factor?: number;      // value * scale + offset
   offset_value?: number;
+  deadband?: number | null;   // 변경 임계값 (노이즈 필터)
   min_value?: number | null;
   max_value?: number | null;
   description?: string | null;
@@ -50,6 +135,7 @@ export interface PipelineDeviceConnectionFilter {
   company_code?: string;
   search?: string;
   status?: string;
+  equipment_id?: number;
 }
 
 export interface DeviceConnectionTestResult {
@@ -67,39 +153,69 @@ export interface DeviceConnectionTestResult {
   };
 }
 
-// 프로토콜 옵션
+// 프로토콜 옵션 (UI 표시용)
 export const PROTOCOL_OPTIONS = [
-  { value: "PLC_ETHERNET", label: "PLC Ethernet (MC Protocol)" },
+  { value: "MODBUS_TCP", label: "Modbus TCP", color: "#F59E0B", defaultPort: 502 },
-  { value: "MODBUS_TCP", label: "Modbus TCP" },
+  { value: "MODBUS_RTU", label: "Modbus RTU (Serial)", color: "#F97316", defaultPort: 0 },
-  { value: "OPCUA", label: "OPC-UA" },
+  { value: "OPCUA", label: "OPC UA", color: "#10B981", defaultPort: 4840 },
-  { value: "MQTT", label: "MQTT" },
+  { value: "SIEMENS_S7", label: "Siemens S7", color: "#6366F1", defaultPort: 102 },
-  { value: "REST_API", label: "REST API" },
+  { value: "LS_XGT", label: "LS XGT (LS Electric)", color: "#8B5CF6", defaultPort: 2004 },
+  { value: "MQTT", label: "MQTT (발행)", color: "#EC4899", defaultPort: 1883 },
+  { value: "MQTT_SUB", label: "MQTT (구독 수집)", color: "#DB2777", defaultPort: 1883 },
+  { value: "MSSQL_DB", label: "MSSQL 쿼리 수집", color: "#14B8A6", defaultPort: 1433 },
+  { value: "REST_API", label: "REST API", color: "#3B82F6", defaultPort: 443 },
 ];
 
-// 프로토콜별 기본 포트
+export const PROTOCOL_DEFAULTS: Record<string, { port: number; config: ProtocolConfig }> = {
-export const PROTOCOL_DEFAULTS: Record<string, { port: number }> = {
+  MODBUS_TCP: { port: 502, config: { unit_id: 1 } },
-  PLC_ETHERNET: { port: 5000 },
+  MODBUS_RTU: { port: 0, config: { serial_port: "/dev/ttyUSB0", baudrate: 9600, parity: "N", stopbits: 1, unit_id: 1 } },
-  MODBUS_TCP: { port: 502 },
+  OPCUA: { port: 4840, config: { security_policy: "None", use_subscription: false } },
-  OPCUA: { port: 4840 },
+  SIEMENS_S7: { port: 102, config: { rack: 0, slot: 1, cpu_type: "S7-1200" } },
-  MQTT: { port: 1883 },
+  LS_XGT: { port: 2004, config: { cpu_type: "XGK", slot: 0 } },
-  REST_API: { port: 443 },
+  MQTT: { port: 1883, config: { qos: 0, keepalive_sec: 60, use_tls: false } },
+  MQTT_SUB: { port: 1883, config: { qos: 0, keepalive_sec: 60, client_id: "" } },
+  MSSQL_DB: {
+    port: 1433,
+    config: {
+      database: "",
+      username: "",
+      password: "",
+      query: "",
+      timestamp_column: "",
+      timestamp_expression: "",
+      id_column: "",
+      name_column: "",
+      batch_mode: false,
+      fetch_size: 500,
+      device_id_prefix: "sql",
+      tds_version: "7_4",
+    },
+  },
+  REST_API: { port: 443, config: {} },
 };
 
-// 태그 데이터 타입 옵션
 export const TAG_DATA_TYPE_OPTIONS = [
-  { value: "INT16", label: "INT16 (정수 16비트)" },
+  { value: "BOOL", label: "BOOL (불리언)" },
-  { value: "INT32", label: "INT32 (정수 32비트)" },
+  { value: "UINT16", label: "UINT16 (부호없는 16비트)" },
+  { value: "INT16", label: "INT16 (부호있는 16비트)" },
+  { value: "UINT32", label: "UINT32 (부호없는 32비트)" },
+  { value: "INT32", label: "INT32 (부호있는 32비트)" },
   { value: "FLOAT32", label: "FLOAT32 (실수 32비트)" },
   { value: "FLOAT64", label: "FLOAT64 (실수 64비트)" },
-  { value: "BOOLEAN", label: "BOOLEAN (불리언)" },
   { value: "STRING", label: "STRING (문자열)" },
 ];
 
-// 주소 타입 옵션
+export const BYTE_ORDER_OPTIONS = [
+  { value: "BIG_ENDIAN", label: "Big Endian (ABCD)" },
+  { value: "LITTLE_ENDIAN", label: "Little Endian (DCBA)" },
+  { value: "BIG_ENDIAN_SWAP", label: "Big Endian Byte Swap (BADC)" },
+  { value: "LITTLE_ENDIAN_SWAP", label: "Little Endian Byte Swap (CDAB)" },
+];
+
 export const ADDRESS_TYPE_OPTIONS = [
-  { value: "WORD", label: "WORD" },
+  { value: "WORD", label: "WORD (Holding Register)" },
-  { value: "DWORD", label: "DWORD" },
+  { value: "DWORD", label: "DWORD (Holding Register x2)" },
-  { value: "FLOAT", label: "FLOAT" },
+  { value: "FLOAT", label: "FLOAT (IEEE 754)" },
-  { value: "BIT", label: "BIT" },
+  { value: "BIT", label: "BIT (Coil)" },
   { value: "STRING", label: "STRING" },
 ];