fix: add missing reserved log attrs

Author: heitorlessa

aws_lambda_powertools/logging/formatter.py

@@ -11,6 +11,7 @@
     "name",
     "msg",
     "args",
+    "level",
     "levelname",
     "levelno",
     "pathname",
@@ -29,6 +30,8 @@
     "processName",
     "process",
     "asctime",
+    "location",
+    "timestamp",
 )
 
 
@@ -187,7 +190,7 @@ def _extract_log_keys(self, log_record: logging.LogRecord) -> Dict[str, Any]:
         # then replace any std log attribute e.g. '%(level)s' to 'INFO', '%(process)d to '4773'
         # lastly add or replace incoming keys (those added within the constructor or .structure_logs method)
         for key, value in self.log_format.items():
-            if isinstance(value, str) and value.startswith("%("):
+            if value and key in RESERVED_LOG_ATTRS:
                 formatted_log[key] = value % record_dict
             else:
                 formatted_log[key] = value

tests/functional/test_logger_powertools_formatter.py

@@ -168,7 +168,7 @@ def test_log_custom_formatting(stdout, service_name):
     log_dict: dict = json.loads(stdout.getvalue())
 
     # THEN the `location` and "timestamp" should match the formatting
-    assert log_dict["location"] == "[test_log_custom_formatting] test_aws_lambda_logging"
+    assert log_dict["location"] == "[test_log_custom_formatting] test_logger_powertools_formatter"
     assert log_dict["timestamp"] == "fake-datefmt"