Add logging around global path provider use

Author: tpoliaw

src/dodal/common/beamlines/beamline_utils.py

@@ -1,4 +1,5 @@
 import inspect
+import logging
 from collections.abc import Callable
 from typing import Annotated, Final, TypeVar, cast
 
@@ -26,6 +27,9 @@
 BL = ""
 
 
+LOGGER = logging.getLogger(__name__)
+
+
 def set_beamline(beamline: str):
     global BL
     BL = beamline
@@ -162,6 +166,11 @@ def decorator(factory: Callable[[], T]) -> DeviceInitializationController[T]:
 def set_path_provider(provider: PathProvider):
     global PATH_PROVIDER
 
+    LOGGER.info(
+        "Setting global path provider to %s (previously %s)",
+        provider,
+        globals().get("PATH_PROVIDER"),
+    )
     PATH_PROVIDER = provider
 
 
@@ -171,6 +180,7 @@ def get_path_provider() -> PathProvider:
 
 def clear_path_provider() -> None:
     global PATH_PROVIDER
+    LOGGER.info("Clearing global path provider: %s", globals().get("PATH_PROVIDER"))
     try:
         del PATH_PROVIDER
     except NameError: