init

app/db/__init__.py

@@ -0,0 +1,2 @@
+#!/usr/bin/env python3
+# -*- coding:utf-8 -*-

app/db/base.py

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+#!/usr/bin/env python3
+# -*- coding:utf-8 -*-
+from contextlib import contextmanager
+from typing import Generator
+
+from sqlalchemy import create_engine
+from sqlalchemy.orm import sessionmaker
+from sqlalchemy.orm import declarative_base
+
+from app.core.config import settings
+
+Base = declarative_base()
+SQLALCHEMY_DATABASE_URL = settings.mysql_dsn
+
+engine = create_engine(SQLALCHEMY_DATABASE_URL, pool_pre_ping=True, echo=False, pool_size=10, max_overflow=20)
+SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
+
+
+# @contextmanager
+# def get_db() -> Generator:
+#     db = SessionLocal()
+#     try:
+#         yield db
+#     finally:
+#         db.close()
+
+
+def get_db() -> Generator:
+    try:
+        db = SessionLocal()
+        yield db
+    finally:
+        db.close()
+
+
+if __name__ == '__main__':
+    with get_db() as db:
+        print(db.info)