chore(converter): manage logging level via env variable

Author: SimonClo

converter/README.md

@@ -68,6 +68,10 @@ Production mode (using Gunicorn):
 gunicorn -w 4 -b 0.0.0.0:8080 converter.converter:app
 ```
 
+### Controlling Logging Level
+
+Set the `LOG_LEVEL` environment variable to one of the following values: `DEBUG`, `INFO`, `WARNING`, `ERROR`, `CRITICAL`. The default level is `INFO`.
+
 ### API Endpoints
 
 #### Convert CISU to Health Format

converter/converter/logging_config.py

@@ -1,4 +1,5 @@
 import logging
+import os
 from pythonjsonlogger.json import JsonFormatter
 from flask import has_request_context, g
 from enum import Enum
@@ -38,6 +39,8 @@ def configure_logging():
     handler.addFilter(DistributionContextFilter())
 
     root.addHandler(handler)
-    root.setLevel(logging.INFO)
+
+    log_level = os.getenv("LOG_LEVEL", logging.getLevelName(logging.INFO)).upper()
+    root.setLevel(log_level)
 
     root.propagate = True