fix: use nullpool even for user lookup in the celery

superset/tasks/schedules.py

@@ -46,6 +46,7 @@
 from selenium.common.exceptions import WebDriverException
 from selenium.webdriver import chrome, firefox
 from selenium.webdriver.remote.webdriver import WebDriver
+from sqlalchemy import func
 from sqlalchemy.exc import NoSuchColumnError, ResourceClosedError
 from sqlalchemy.orm import Session
 
@@ -200,12 +201,21 @@ def _get_url_path(view: str, user_friendly: bool = False, **kwargs: Any) -> str:
         return urllib.parse.urljoin(str(base_url), url_for(view, **kwargs))
 
 
-def create_webdriver() -> WebDriver:
-    return WebDriverProxy(driver_type=config["WEBDRIVER_TYPE"]).auth(get_reports_user())
+def create_webdriver(session: Session) -> WebDriver:
+    return WebDriverProxy(driver_type=config["WEBDRIVER_TYPE"]).auth(
+        get_reports_user(session)
+    )
 
 
-def get_reports_user() -> "User":
-    return security_manager.find_user(config["EMAIL_REPORTS_USER"])
+def get_reports_user(session: Session) -> "User":
+    return (
+        session.query(security_manager.user_model)
+        .filter(
+            func.lower(security_manager.user_model.username)
+            == func.lower(config["EMAIL_REPORTS_USER"])
+        )
+        .one()
+    )
 
 
 def destroy_webdriver(
@@ -249,7 +259,7 @@ def deliver_dashboard(  # pylint: disable=too-many-locals
         )
 
         # Create a driver, fetch the page, wait for the page to render
-        driver = create_webdriver()
+        driver = create_webdriver(session)
         window = config["WEBDRIVER_WINDOW"]["dashboard"]
         driver.set_window_size(*window)
         driver.get(dashboard_url)
@@ -303,7 +313,9 @@ def deliver_dashboard(  # pylint: disable=too-many-locals
             )
 
 
-def _get_slice_data(slc: Slice, delivery_type: EmailDeliveryType) -> ReportContent:
+def _get_slice_data(
+    slc: Slice, delivery_type: EmailDeliveryType, session: Session
+) -> ReportContent:
     slice_url = _get_url_path(
         "Superset.explore_json", csv="true", form_data=json.dumps({"slice_id": slc.id})
     )
@@ -315,7 +327,7 @@ def _get_slice_data(slc: Slice, delivery_type: EmailDeliveryType) -> ReportConte
 
     # Login on behalf of the "reports" user in order to get cookies to deal with auth
     auth_cookies = machine_auth_provider_factory.instance.get_auth_cookies(
-        get_reports_user()
+        get_reports_user(session)
     )
     # Build something like "session=cool_sess.val;other-cookie=awesome_other_cookie"
     cookie_str = ";".join([f"{key}={val}" for key, val in auth_cookies.items()])
@@ -384,10 +396,10 @@ def _get_slice_screenshot(slice_id: int, session: Session) -> ScreenshotData:
 
 
 def _get_slice_visualization(
-    slc: Slice, delivery_type: EmailDeliveryType
+    slc: Slice, delivery_type: EmailDeliveryType, session: Session
 ) -> ReportContent:
     # Create a driver, fetch the page, wait for the page to render
-    driver = create_webdriver()
+    driver = create_webdriver(session)
     window = config["WEBDRIVER_WINDOW"]["slice"]
     driver.set_window_size(*window)
 
@@ -438,9 +450,9 @@ def deliver_slice(  # pylint: disable=too-many-arguments
     slc = session.query(Slice).filter_by(id=slice_id).one()
 
     if email_format == SliceEmailReportFormat.data:
-        report_content = _get_slice_data(slc, delivery_type)
+        report_content = _get_slice_data(slc, delivery_type, session)
     elif email_format == SliceEmailReportFormat.visualization:
-        report_content = _get_slice_visualization(slc, delivery_type)
+        report_content = _get_slice_visualization(slc, delivery_type, session)
     else:
         raise RuntimeError("Unknown email report format")
 

tests/schedules_test.py

@@ -171,7 +171,7 @@ def test_create_driver(self, mock_driver_class):
         mock_driver_class.return_value = mock_driver
         mock_driver.find_elements_by_id.side_effect = [True, False]
 
-        create_webdriver()
+        create_webdriver(db.session)
         mock_driver.add_cookie.assert_called_once()
 
     @patch("superset.tasks.schedules.firefox.webdriver.WebDriver")