ashb commented on code in PR #48491:
URL: https://github.com/apache/airflow/pull/48491#discussion_r2021791797


##########
airflow-core/src/airflow/logging_config.py:
##########
@@ -19,40 +19,65 @@
 
 import logging
 import warnings
+from contextlib import suppress
 from logging.config import dictConfig
+from typing import TYPE_CHECKING, Any
 
 from airflow.configuration import conf
 from airflow.exceptions import AirflowConfigException
 from airflow.utils.module_loading import import_string
 
+if TYPE_CHECKING:
+    from airflow.logging.remote import RemoteLogIO
+
 log = logging.getLogger(__name__)
 
 
-def configure_logging():
+REMOTE_TASK_LOG: RemoteLogIO | None
+
+
+def __getattr__(name: str):
+    if name == "REMOTE_TASK_LOG":
+        global REMOTE_TASK_LOG
+        load_logging_config()
+        return REMOTE_TASK_LOG
+
+
+def load_logging_config() -> tuple[dict[str, Any], str]:
     """Configure & Validate Airflow Logging."""
-    logging_class_path = ""
-    try:
-        logging_class_path = conf.get("logging", "logging_config_class")
-    except AirflowConfigException:
-        log.debug("Could not find key logging_config_class in config")
+    global REMOTE_TASK_LOG
+    logging_class_path = conf.get("logging", "logging_config_class", 
fallback=None)
 
-    if logging_class_path:
-        try:
-            logging_config = import_string(logging_class_path)
+    user_defined = logging_class_path is not None
 
-            # Make sure that the variable is in scope
-            if not isinstance(logging_config, dict):
-                raise ValueError("Logging Config should be of dict type")
+    logging_class_path = (
+        logging_class_path or 
"airflow.config_templates.airflow_local_settings.DEFAULT_LOGGING_CONFIG"

Review Comment:
   Because I want to know if the user has defined a value (any value) or not.
   
   I guess I could do this
   
   ```python
       fallback = 
"airflow.config_templates.airflow_local_settings.DEFAULT_LOGGING_CONFIG"
       logging_class_path = conf.get("logging", "logging_config_class", 
fallback=fallback)
   
       user_defined = logging_class_path != fallback
   ```



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