`engine.url` can be `None`

[sentrivana]

Version

1.40.0

Problem

We assume that engine.url is always set in the SQLAlchemyIntegration, but it's not always the case.

The customer is running Python 3.11 with Django 4.1.10, uWSGI 2.0.23 workers, SQLAlchemy 1.3.x.

Expected Result

No AttributeError.

Actual Result

File "<redacted>/lib/python3.11/site-packages/gino/crud.py", line 537, in get
    return await bind.first(clause)
           ^^^^^^^^^^^^^^^^^^^^^^^^
  File "<redacted>/lib/python3.11/site-packages/gino/engine.py", line 748, in first
    return await conn.first(clause, *multiparams, **params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<redacted>/python3.11/site-packages/gino/engine.py", line 327, in first
    result = self._execute(clause, multiparams, params)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<redacted>/lib/python3.11/site-packages/gino/engine.py", line 295, in _execute
    return self._sa_conn.execute(clause, *multiparams, **params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<redacted>/lib/python3.11/site-packages/sqlalchemy/engine/base.py", line 1011, in execute
    return meth(self, multiparams, params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<redacted>/lib/python3.11/site-packages/sqlalchemy/sql/elements.py", line 298, in _execute_on_connection
    return connection._execute_clauseelement(self, multiparams, params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<redacted>/lib/python3.11/site-packages/sqlalchemy/engine/base.py", line 1124, in _execute_clauseelement
    ret = self._execute_context(
          ^^^^^^^^^^^^^^^^^^^^^^
  File "<redacted>/lib/python3.11/site-packages/gino/engine.py", line 121, in _execute_context
    return super()._execute_context(
           ^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<redacted>/lib/python3.11/site-packages/sqlalchemy/engine/base.py", line 1224, in _execute_context
    statement, parameters = fn(
                            ^^^
  File "<redacted>/lib/python3.11/site-packages/sqlalchemy/events.py", line 636, in wrap_before_cursor_execute
    orig_fn(
  File "<redacted>/lib/python3.11/site-packages/sentry_sdk/integrations/sqlalchemy.py", line 70, in _before_cursor_execute
    _set_db_data(span, conn)
  File "<redacted>/lib/python3.11/site-packages/sentry_sdk/integrations/sqlalchemy.py", line 156, in _set_db_data
    db_name = conn.engine.url.database
              ^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'database'

Solution

Find out if there's another way to get the DB data we're currently getting via engine.url. If so, do that. Otherwise, do not attach the DB data at all if engine.url is None.