fix(exceptions): Update headers.get to check 'Retry-After' (#130)

* bug: Upate retry-after header to match API

dictionary looks up are case sensitive. Since we return the header as Retry-After we need to have the .get match

* write simple test to verify

* remove support for 3.7 - add support for 3.11 & 3.12

* build release version to 3.11

.travis.yml

@@ -9,10 +9,11 @@ addons:
 language: python
 
 python:
-  - '3.7'
   - '3.8'
   - '3.9'
   - '3.10'
+  - '3.11'
+  - '3.12'
 
 if: tag IS blank # do not build tags
 
@@ -35,7 +36,7 @@ script:
 jobs:
   include:
     - stage: publish
-      python: '3.9'
+      python: '3.11'
       services: []
       addons:
         firefox: 'skip'

smartcar/exception.py

@@ -77,7 +77,7 @@ def exception_factory(status_code: int, headers: dict, body: str):
     # v2.0
     elif response.get("type"):
         # Set retry_after only for Vehicle Rate Limit errors
-        if headers.get("retry-after") is not None:
+        if headers.get("Retry-After") is not None:
             return SmartcarException(
                 status_code=response.get("statusCode"),
                 request_id=response.get("requestId"),
@@ -87,7 +87,7 @@ def exception_factory(status_code: int, headers: dict, body: str):
                 doc_url=response.get("docURL"),
                 resolution=response.get("resolution"),
                 detail=response.get("detail"),
-                retry_after=headers.get("retry-after"),
+                retry_after=headers.get("Retry-After"),
             )
         else:
             return SmartcarException(

smartcar/vehicle.py

@@ -443,9 +443,9 @@ def batch(self, paths: List[str]) -> namedtuple:
                     "sc-request-id"
                 )
                 # use lambda default args to avoid issues with closures
-                batch_dict[
-                    attribute
-                ] = lambda p=path, r=res_dict: types.select_named_tuple(p, r)
+                batch_dict[attribute] = (
+                    lambda p=path, r=res_dict: types.select_named_tuple(p, r)
+                )
             else:
                 # if individual response is erroneous, attach a lambda that returns a SmartcarException
                 def _attribute_raise_exception(smartcar_exception):
@@ -455,9 +455,9 @@ def _attribute_raise_exception(smartcar_exception):
                 headers = response.headers
                 body = json.dumps(res_dict.get("body"))
                 sc_exception = sce.exception_factory(code, headers, body)
-                batch_dict[
-                    attribute
-                ] = lambda e=sc_exception: _attribute_raise_exception(e)
+                batch_dict[attribute] = (
+                    lambda e=sc_exception: _attribute_raise_exception(e)
+                )
 
         # STEP 3 - Attach Meta to batch_dict
         batch_dict["meta"] = types.build_meta(response.headers)

tests/e2e/test_exception.py

@@ -148,3 +148,18 @@ def test_json_cant_be_parsed():
         assert e.message == "diggity"
         assert e.status_code == 900
         assert e.type == "SDK_ERROR"
+
+
+def test_retry_after_found():
+    """
+    test that we can get the retry_after amount
+    """
+    try:
+        raise exception_factory(
+            429,
+            {"Retry-After": 5000, "Content-Type": "application/json"},
+            '{"statusCode":429,"type":"RATE_LIMIT","code":"Vehicle","resolution":{"type":"RETRY_LATER"},"requestId":"e0027f5f-4411-4247-a54d-e34c157d84c1"}',
+        )
+    except Exception as e:
+        assert isinstance(e, SmartcarException)
+        assert e.retry_after == 5000