Fix issues with latest version of sqlalchemy

gns3server/db/models/base.py

@@ -43,6 +43,7 @@ class GUID(TypeDecorator):
     """
 
     impl = CHAR
+    cache_ok = True
 
     def load_dialect_impl(self, dialect):
         if dialect.name == "postgresql":

gns3server/db/tasks.py

@@ -43,12 +43,12 @@ async def connect_to_db(app: FastAPI) -> None:
     db_url = os.environ.get("GNS3_DATABASE_URI", f"sqlite+aiosqlite:///{db_path}")
     engine = create_async_engine(db_url, connect_args={"check_same_thread": False}, future=True)
     try:
-        async with engine.begin() as conn:
+        async with engine.connect() as conn:
             await conn.run_sync(Base.metadata.create_all)
             log.info(f"Successfully connected to database '{db_url}'")
         app.state._db_engine = engine
     except SQLAlchemyError as e:
-        log.error(f"Error while connecting to database '{db_url}: {e}")
+        log.fatal(f"Error while connecting to database '{db_url}: {e}")
 
 
 @event.listens_for(Engine, "connect")

tests/conftest.py

@@ -78,7 +78,7 @@ async def db_session(db_engine):
     # recreate database tables for each class
     # preferred and faster way would be to rollback the session/transaction
     # but it doesn't work for some reason
-    async with db_engine.begin() as conn:
+    async with db_engine.connect() as conn:
         # Speed up tests by avoiding to hash the 'admin' password everytime the default super admin is added
         # to the database using the "after_create" sqlalchemy event
         hashed_password = "$2b$12$jPsNU9IS7.EWEqXahtDfo.26w6VLOLCuFEHKNvDpOjxs5e0WpqJfa"
@@ -86,7 +86,7 @@ async def db_session(db_engine):
             await conn.run_sync(Base.metadata.drop_all)
             await conn.run_sync(Base.metadata.create_all)
 
-    session = AsyncSession(db_engine)
+    session = AsyncSession(db_engine, expire_on_commit=False)
     try:
         yield session
     finally: