Please send minimal/reproducible codes and steps to reproduce this issue. Only
stack trace doesn’t help.
> On Dec 7, 2023, at 11:37, 何于豪 <heyu...@wisecotech.com> wrote:
>
>
> hello there:
> python version 3.8.17
> pymysql version 1.0.0
> platform:both linux and windows can reproduce
> error stack
> Traceback (most recent call last):
> File "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\flask\app.py",
> line 2091, in __call__
> return self.wsgi_app(environ, start_response)
> File "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\flask\app.py",
> line 2076, in wsgi_app
> response = self.handle_exception(e)
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\skywalking\plugins\sw_flask.py",
> line 87, in _sw_handle_exception
> return _handle_exception(this, e)
> File "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\flask\app.py",
> line 2073, in wsgi_app
> response = self.full_dispatch_request()
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\skywalking\plugins\sw_flask.py",
> line 65, in _sw_full_dispatch_request
> resp = _full_dispatch_request(this)
> File "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\flask\app.py",
> line 1519, in full_dispatch_request
> rv = self.handle_user_exception(e)
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\skywalking\plugins\sw_flask.py",
> line 79, in _sw_handle_user_exception
> return _handle_user_exception(this, e)
> File "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\flask\app.py",
> line 1517, in full_dispatch_request
> rv = self.dispatch_request()
> File "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\flask\app.py",
> line 1503, in dispatch_request
> return
> self.ensure_sync(self.view_functions[rule.endpoint])(**req.view_args)
> File "D:\code\model_algo\api\controller\job.py", line 53, in job_result
> if result.status == "FAILURE":
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\celery\result.py", line
> 473, in state
> return self._get_task_meta()['status']
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\celery\result.py", line
> 412, in _get_task_meta
> return self._maybe_set_cache(self.backend.get_task_meta(self.id))
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\celery\backends\base.py",
> line 386, in get_task_meta
> meta = self._get_task_meta_for(task_id)
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\celery\backends\database\__init__.py",
> line 53, in _inner
> return fun(*args, **kwargs)
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\celery\backends\database\__init__.py",
> line 122, in _get_task_meta_for
> session = self.ResultSession()
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\celery\backends\database\__init__.py",
> line 96, in ResultSession
> return session_manager.session_factory(
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\celery\backends\database\session.py",
> line 59, in session_factory
> self.prepare_models(engine)
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\celery\backends\database\session.py",
> line 54, in prepare_models
> ResultModelBase.metadata.create_all(engine)
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\sqlalchemy\sql\schema.py",
> line 4917, in create_all
> bind._run_ddl_visitor(
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\sqlalchemy\engine\base.py",
> line 3227, in _run_ddl_visitor
> with self.begin() as conn:
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\sqlalchemy\engine\base.py",
> line 3143, in begin
> conn = self.connect(close_with_result=close_with_result)
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\sqlalchemy\engine\base.py",
> line 3315, in connect
> return self._connection_cls(self, close_with_result=close_with_result)
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\sqlalchemy\engine\base.py",
> line 96, in __init__
> else engine.raw_connection()
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\sqlalchemy\engine\base.py",
> line 3394, in raw_connection
> return self._wrap_pool_connect(self.pool.connect, _connection)
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\sqlalchemy\engine\base.py",
> line 3361, in _wrap_pool_connect
> return fn()
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\sqlalchemy\pool\base.py",
> line 320, in connect
> return _ConnectionFairy._checkout(self)
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\sqlalchemy\pool\base.py",
> line 884, in _checkout
> fairy = _ConnectionRecord.checkout(pool)
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\sqlalchemy\pool\base.py",
> line 486, in checkout
> rec = pool._do_get()
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\sqlalchemy\pool\impl.py",
> line 256, in _do_get
> return self._create_connection()
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\sqlalchemy\pool\base.py",
> line 266, in _create_connection
> return _ConnectionRecord(self)
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\sqlalchemy\pool\base.py",
> line 381, in __init__
> self.__connect()
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\sqlalchemy\pool\base.py",
> line 689, in __connect
> pool.dispatch.connect.for_modify(
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\sqlalchemy\event\attr.py",
> line 320, in _exec_w_sync_on_first_run
> self(*args, **kw)
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\sqlalchemy\event\attr.py",
> line 334, in __call__
> fn(*args, **kw)
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\sqlalchemy\engine\create.py",
> line 658, in on_connect
> do_on_connect(dbapi_connection)
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\sqlalchemy\dialects\mysql\mysqldb.py",
> line 176, in on_connect
> cursor.execute("SET NAMES %s" % charset_name)
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\skywalking\plugins\sw_mysqlclient.py",
> line 70, in execute
> return self._self_cur.execute(query, args)
> File
> "C:\Users\heyuhao\.conda\envs\algo\lib\site-packages\skywalking\plugins\sw_pymysql.py",
> line 45, in _sw_execute
> span.tag(TagDbInstance((this.connection.db or b'').decode('utf-8')))
> AttributeError: 'str' object has no attribute 'decode'
>
> TKS.
