improved logging

python_app/orchestration/live_processing_config.py

@@ -4,8 +4,11 @@ from __future__ import annotations
 
 from dataclasses import dataclass
 import json
+import logging
 from pathlib import Path
 
+logger = logging.getLogger(__name__)
+
 
 @dataclass(slots=True)
 class ProcessingLiveConfig:
@@ -148,6 +151,12 @@ class ProcessingLiveConfigWriter:
 
     def write(self, config: ProcessingLiveConfig) -> Path:
         """Atomically write config by temp-file replace."""
+        # Hot path: rewritten on every live knob change, so keep this at DEBUG.
+        logger.debug(
+            "Writing live processing config (mode=%s) to %s",
+            config.processor_mode,
+            self._config_path,
+        )
         temp_path = self._config_path.with_suffix(self._config_path.suffix + ".tmp")
         temp_path.write_text(json.dumps(config.to_dict(), indent=2), encoding="utf-8")
         temp_path.replace(self._config_path)