zhongjiajie commented on a change in pull request #7903: Add conn_name and
get_connection to dbapi_hook
URL: https://github.com/apache/airflow/pull/7903#discussion_r404662162
##########
File path: airflow/hooks/dbapi_hook.py
##########
@@ -62,15 +63,31 @@ def __init__(self, *args, **kwargs):
raise AirflowException("conn_name_attr is not defined")
elif len(args) == 1:
setattr(self, self.conn_name_attr, args[0])
- elif self.conn_name_attr not in kwargs:
- setattr(self, self.conn_name_attr, self.default_conn_name)
else:
- setattr(self, self.conn_name_attr, kwargs[self.conn_name_attr])
+ setattr(self, self.conn_name_attr, kwargs.get(self.conn_name_attr,
self.default_conn_name))
+
+ @property
+ def conn_name(self) -> str:
+ """
+ Get the name of the database connection attribute which identifies the
connection.
+ """
+ return getattr(self, self.conn_name_attr)
+
+ def get_connection(self, conn_id: Optional[str] = None) -> Connection:
Review comment:
Emmy, I think we get some problem here, `mypy` unhappy and said `76: error:
Signature of "get_connection" incompatible with supertype "BaseHook"`, because
in `BaseHook` function `get_connection` is `classmethod`, but in `DbApiHook`
function `get_connection` we use `getattr(self, self.conn_name_attr)` so have
to be instance method.
And `DbApiHook` we do not need to pass `conn_id` anymore, and I think we
should change function `get_connection` to `@property connection` here. WDYT
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