Avoid locking in the logging queue handler

homeassistant/util/logging.py

@@ -39,6 +39,24 @@ def emit(self, record: logging.LogRecord) -> None:
         except Exception:  # pylint: disable=broad-except
             self.handleError(record)
 
+    def handle(self, record: logging.LogRecord) -> Any:
+        """
+        Conditionally emit the specified logging record.
+
+        Depending on which filters have been added to the handler, push the new
+        records onto the backing Queue.
+
+        The default python logger Handler acquires a lock
+        in the parent class which we do not need as
+        SimpleQueue is already thread safe.
+
+        See https://bugs.python.org/issue24645
+        """
+        return_value = self.filter(record)
+        if return_value:
+            self.emit(record)
+        return return_value
+
 
 @callback
 def async_activate_log_queue_handler(hass: HomeAssistant) -> None:

tests/util/test_logging.py

@@ -38,6 +38,17 @@ async def test_logging_with_queue_handler():
     ):
         handler.emit(log_record)
 
+    with patch.object(handler, "emit") as emit_mock:
+        handler.handle(log_record)
+        emit_mock.assert_called_once()
+
+    with patch.object(handler, "filter") as filter_mock, patch.object(
+        handler, "emit"
+    ) as emit_mock:
+        filter_mock.return_value = False
+        handler.handle(log_record)
+        emit_mock.assert_not_called()
+
     with patch.object(handler, "enqueue", side_effect=OSError), patch.object(
         handler, "handleError"
     ) as mock_handle_error: