초기화

server/database/__init__.py

@@ -0,0 +1 @@
+# database package marker

server/database/connection.py

@@ -0,0 +1,14 @@
+import mysql.connector
+
+# --- DB 설정 ---
+DB_HOST = "localhost"
+DB_PORT = 3306
+DB_USER = "ctnt_root"
+DB_PASSWORD = "Umsang6595!!"
+DB_NAME = "carbon_cutting_mc_db"
+
+from .pool import get_pooled_connection
+
+def get_db_connection():
+    """DB 연결 풀에서 연결을 획득합니다."""
+    return get_pooled_connection()

server/database/pool.py

@@ -0,0 +1,38 @@
+import mysql.connector.pooling
+import logging
+
+logger = logging.getLogger("db_pool")
+
+DB_CONFIG = {
+    "host": "localhost",
+    "port": 3306,
+    "user": "ctnt_root",
+    "password": "Umsang6595!!",
+    "database": "carbon_cutting_mc_db",
+    "autocommit": True,
+}
+
+try:
+    dbpool = mysql.connector.pooling.MySQLConnectionPool(
+        pool_name="carbon_cutting_pool",
+        pool_size=5,
+        pool_reset_session=True,
+        **DB_CONFIG
+    )
+    logger.info("[DB POOL] Connection pool initialized (pool_size=5)")
+except Exception as e:
+    logger.error(f"[DB POOL ERROR] Failed to initialize pool: {e}", exc_info=True)
+    dbpool = None
+
+def get_pooled_connection():
+    """풀에서 연결 획득"""
+    if dbpool is None:
+        raise RuntimeError("[DB POOL ERROR] Pool not initialized")
+    conn = dbpool.get_connection()
+    try:
+        # DB 세션이 만료되거나 끊어진 경우 자동 재연결 시도
+        conn.ping(reconnect=True, attempts=3, delay=1)
+    except Exception as e:
+        logger.warning(f"[DB POOL] Ping/Reconnect failed: {e}")
+    return conn
+