EV 충전 플랫폼 초기 백업

app/database.py

@@ -0,0 +1,47 @@
+"""비동기 DB 엔진 + 세션 팩토리"""
+
+from sqlalchemy.ext.asyncio import (
+    AsyncSession,
+    async_sessionmaker,
+    create_async_engine,
+)
+from sqlalchemy.orm import DeclarativeBase
+from app.config import get_settings
+
+settings = get_settings()
+
+engine = create_async_engine(
+    settings.database_url,
+    echo=settings.DEBUG,
+    pool_size=10,
+    max_overflow=20,
+)
+
+AsyncSessionLocal = async_sessionmaker(
+    engine,
+    class_=AsyncSession,
+    expire_on_commit=False,
+)
+
+
+class Base(DeclarativeBase):
+    pass
+
+
+async def get_db():
+    """FastAPI Depends용 DB 세션 제너레이터"""
+    async with AsyncSessionLocal() as session:
+        try:
+            yield session
+            await session.commit()
+        except Exception:
+            await session.rollback()
+            raise
+        finally:
+            await session.close()
+
+
+async def init_db():
+    """테이블 생성 (개발용 — 프로덕션에서는 Alembic 사용)"""
+    async with engine.begin() as conn:
+        await conn.run_sync(Base.metadata.create_all)