feat(feature-flags): Bring your own logger for debug

aws_lambda_powertools/utilities/feature_flags/appconfig.py

@@ -43,6 +43,8 @@ def __init__(
             JMESPath expression to pluck feature flags data from config
         jmespath_options : Optional[Dict]
             Alternative JMESPath options to be included when filtering expr
+        logger: A logging object
+            Used to log messages.  If None is supplied, one will be created.
         """
         super().__init__()
         if logger == None:

aws_lambda_powertools/utilities/feature_flags/feature_flags.py

@@ -33,6 +33,8 @@ def __init__(self, store: StoreProvider, logger=None):
         ----------
         store: StoreProvider
             Store to use to fetch feature flag schema configuration.
+        logger: A logging object
+            Used to log messages.  If None is supplied, one will be created.
         """
         self._store = store
         if logger == None:

docs/utilities/feature_flags.md

@@ -548,6 +548,7 @@ Parameter | Default | Description
 **max_age** | `5` | Number of seconds to cache feature flags configuration fetched from AWS AppConfig
 **sdk_config** | `None` | [Botocore Config object](https://botocore.amazonaws.com/v1/documentation/api/latest/reference/config.html){target="_blank"}
 **jmespath_options** | `None` | For advanced use cases when you want to bring your own [JMESPath functions](https://github.com/jmespath/jmespath.py#custom-functions){target="_blank"}
+**logger** | `None` | Logger to use.  If None is supplied, then a logger will be created.
 
 === "appconfig_store_example.py"