🐛 fix(base.py): handle case when no database_url is provided and raise an error

✨ feat(base.py): add error handling when creating database and tables to provide more informative error messages
The code now checks if the `settings.database_url` is provided and raises a `RuntimeError` if it is not. This ensures that the application does not attempt to create a database connection without a valid URL. Additionally, error handling has been added when creating the database and tables. If an exception occurs during the creation process, an error message is logged and a `RuntimeError` is raised with a more informative error message. This helps in identifying and resolving any issues related to the database creation process.

src/backend/langflow/database/base.py

@@ -2,17 +2,22 @@ from langflow.settings import settings
 from sqlmodel import SQLModel, Session, create_engine
 from langflow.utils.logger import logger
 
-if settings.database_url.startswith("sqlite"):
+if settings.database_url and settings.database_url.startswith("sqlite"):
     connect_args = {"check_same_thread": False}
 else:
     connect_args = {}
-
+if not settings.database_url:
+    raise RuntimeError("No database_url provided")
 engine = create_engine(settings.database_url, connect_args=connect_args)
 
 
 def create_db_and_tables():
     logger.debug("Creating database and tables")
-    SQLModel.metadata.create_all(engine)
+    try:
+        SQLModel.metadata.create_all(engine)
+    except Exception as exc:
+        logger.error(f"Error creating database and tables: {exc}")
+        raise RuntimeError("Error creating database and tables") from exc
     # Now check if the table Flow exists, if not, something went wrong
     # and we need to create the tables again.
     from sqlalchemy import inspect
@@ -21,6 +26,7 @@ def create_db_and_tables():
     if "flow" not in inspector.get_table_names():
         logger.error("Something went wrong creating the database and tables.")
         logger.error("Please check your database settings.")
+
         raise RuntimeError("Something went wrong creating the database and tables.")
     else:
         logger.debug("Database and tables created successfully")