제어관리 외부커넥션 설정기능

backend-node/src/database/MariaDBConnector.ts

@@ -1,6 +1,10 @@
-import { DatabaseConnector, ConnectionConfig, QueryResult } from '../interfaces/DatabaseConnector';
-import { ConnectionTestResult, TableInfo } from '../types/externalDbTypes';
-import * as mysql from 'mysql2/promise';
+import {
+  DatabaseConnector,
+  ConnectionConfig,
+  QueryResult,
+} from "../interfaces/DatabaseConnector";
+import { ConnectionTestResult, TableInfo } from "../types/externalDbTypes";
+import * as mysql from "mysql2/promise";
 
 export class MariaDBConnector implements DatabaseConnector {
   private connection: mysql.Connection | null = null;
@@ -18,8 +22,18 @@ export class MariaDBConnector implements DatabaseConnector {
         user: this.config.user,
         password: this.config.password,
         database: this.config.database,
-        connectTimeout: this.config.connectionTimeoutMillis,
-        ssl: typeof this.config.ssl === 'boolean' ? undefined : this.config.ssl,
+        // 🔧 MySQL2에서 지원하는 타임아웃 설정
+        connectTimeout: this.config.connectionTimeoutMillis || 30000, // 연결 타임아웃 30초
+        ssl: typeof this.config.ssl === "boolean" ? undefined : this.config.ssl,
+        // 🔧 MySQL2에서 지원하는 추가 설정
+        charset: "utf8mb4",
+        timezone: "Z",
+        supportBigNumbers: true,
+        bigNumberStrings: true,
+        // 🔧 연결 풀 설정 (단일 연결이지만 안정성을 위해)
+        dateStrings: true,
+        debug: false,
+        trace: false,
       });
     }
   }
@@ -35,7 +49,9 @@ export class MariaDBConnector implements DatabaseConnector {
     const startTime = Date.now();
     try {
       await this.connect();
-      const [rows] = await this.connection!.query("SELECT VERSION() as version");
+      const [rows] = await this.connection!.query(
+        "SELECT VERSION() as version"
+      );
       const version = (rows as any[])[0]?.version || "Unknown";
       const responseTime = Date.now() - startTime;
       await this.disconnect();
@@ -63,7 +79,18 @@ export class MariaDBConnector implements DatabaseConnector {
   async executeQuery(query: string): Promise<QueryResult> {
     try {
       await this.connect();
-      const [rows, fields] = await this.connection!.query(query);
+
+      // 🔧 쿼리 타임아웃 수동 구현 (60초)
+      const queryTimeout = this.config.queryTimeoutMillis || 60000;
+      const queryPromise = this.connection!.query(query);
+      const timeoutPromise = new Promise((_, reject) => {
+        setTimeout(() => reject(new Error("쿼리 실행 타임아웃")), queryTimeout);
+      });
+
+      const [rows, fields] = (await Promise.race([
+        queryPromise,
+        timeoutPromise,
+      ])) as any;
       await this.disconnect();
       return {
         rows: rows as any[],
@@ -106,17 +133,51 @@ export class MariaDBConnector implements DatabaseConnector {
 
   async getColumns(tableName: string): Promise<any[]> {
     try {
+      console.log(`🔍 MariaDB 컬럼 조회 시작: ${tableName}`);
       await this.connect();
-      const [rows] = await this.connection!.query(`
+
+      // 🔧 컬럼 조회 타임아웃 수동 구현 (30초)
+      const queryTimeout = this.config.queryTimeoutMillis || 30000;
+      // 스키마명을 명시적으로 확인
+      const schemaQuery = `SELECT DATABASE() as schema_name`;
+      const [schemaResult] = await this.connection!.query(schemaQuery);
+      const schemaName =
+        (schemaResult as any[])[0]?.schema_name || this.config.database;
+
+      console.log(`📋 사용할 스키마: ${schemaName}`);
+
+      const query = `
         SELECT 
           COLUMN_NAME as column_name,
           DATA_TYPE as data_type,
           IS_NULLABLE as is_nullable,
-          COLUMN_DEFAULT as column_default
+          COLUMN_DEFAULT as column_default,
+          COLUMN_COMMENT as column_comment
         FROM information_schema.COLUMNS
-        WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = ?
+        WHERE TABLE_SCHEMA = ? AND TABLE_NAME = ?
         ORDER BY ORDINAL_POSITION;
-      `, [tableName]);
+      `;
+
+      console.log(
+        `📋 실행할 쿼리: ${query.trim()}, 파라미터: [${schemaName}, ${tableName}]`
+      );
+
+      const queryPromise = this.connection!.query(query, [
+        schemaName,
+        tableName,
+      ]);
+      const timeoutPromise = new Promise((_, reject) => {
+        setTimeout(() => reject(new Error("컬럼 조회 타임아웃")), queryTimeout);
+      });
+
+      const [rows] = (await Promise.race([
+        queryPromise,
+        timeoutPromise,
+      ])) as any;
+
+      console.log(
+        `✅ MariaDB 컬럼 조회 완료: ${tableName}, ${rows ? rows.length : 0}개 컬럼`
+      );
       await this.disconnect();
       return rows as any[];
     } catch (error: any) {
@@ -124,4 +185,4 @@ export class MariaDBConnector implements DatabaseConnector {
       throw new Error(`컬럼 정보 조회 실패: ${error.message}`);
     }
   }
-}
+}