enable settings.LOGGING to benefit dictConfig

scrapy/utils/log.py

@@ -92,34 +92,29 @@ def configure_logging(settings=None, install_root_handler=True):
     if isinstance(settings, dict) or settings is None:
         settings = Settings(settings)
 
+    LOGGING_FROM_SETTINGS = settings.get('LOGGING')
+
     if settings.getbool('LOG_STDOUT'):
         sys.stdout = StreamLogger(logging.getLogger('stdout'))
+        LOGGING_FROM_SETTINGS = None
 
-    if install_root_handler:
+    elif LOGGING_FROM_SETTINGS:
+        LOGGING = DEFAULT_LOGGING.copy()
+        LOGGING.update(LOGGING_FROM_SETTINGS)
+        dictConfig(LOGGING)
+
+    if install_root_handler and not LOGGING_FROM_SETTINGS:
         logging.root.setLevel(logging.NOTSET)
         handler = _get_handler(settings)
         logging.root.addHandler(handler)
 
 
-def _import_hander(name):
-    """Return class from dotted name"""
-    import importlib
-    module_name, class_name = name.rsplit('.', 1)
-    module = importlib.import_module(module_name)
-    return getattr(module, class_name)
-
-
 def _get_handler(settings):
     """ Return a log handler object according to settings """
     filename = settings.get('LOG_FILE')
     if filename:
         encoding = settings.get('LOG_ENCODING')
-        handler = settings.get('LOG_HANDLER')
-        if handler:
-            Handler = _import_hander(handler)
-        else:
-            Handler = logging.FileHandler
-        handler = Handler(filename, encoding=encoding)
+        handler = logging.FileHandler(filename, encoding=encoding)
     elif settings.getbool('LOG_ENABLED'):
         handler = logging.StreamHandler()
     else: