Handle VersionLabel missing from API response gracefully

Author: jamesoff

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+## 2.2.1 - 2025-01-08
+
+- Handle `VersionLabel` not being present in API response gracefully
+
 ## 2.2.0 - 2024-11-26
 
 ### Added

appconfig_helper/appconfig_helper.py

@@ -4,7 +4,7 @@
 
 import json
 import time
-from typing import Any, Dict, Optional, Union
+from typing import Any, Dict, Optional, Union, cast
 
 import boto3
 import botocore
@@ -196,5 +196,5 @@ def update_config(self, force_update: bool = False) -> bool:
         self._last_update_time = time.time()
         self._raw_config = content
         self._content_type = response["ContentType"]
-        self._version_label = response["VersionLabel"]
+        self._version_label = cast(Optional[str], response.get("VersionLabel"))
         return True

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "sample-helper-aws-appconfig"
-version = "2.2.0"
+version = "2.2.1"
 description = "Sample helper library for AWS AppConfig"
 authors = ["Amazon Web Services"]
 maintainers = ["James Seward <sewardjm@amazon.co.uk>"]