def transform_mapping(self):
for k, v in self._template.get("Mappings", {}).items():
if "Fn::Transform" in v:
name = v["Fn::Transform"]["Name"]
params = v["Fn::Transform"]["Parameters"]
if name == "AWS::Include":
location = params["Location"]
bucket_name, name = bucket_and_name_from_url(location)
key = s3_backend.get_object(bucket_name, name)
self._parsed_resources.update(json.loads(key.value))
def _get_stack_from_s3_url(self, template_url):
template_url_parts = urlparse(template_url)
if "localhost" in template_url:
bucket_name, key_name = template_url_parts.path.lstrip("/").split(
"/", 1)
else:
if template_url_parts.netloc.endswith(
"amazonaws.com") and template_url_parts.netloc.startswith(
"s3"):
# Handle when S3 url uses amazon url with bucket in path
# Also handles getting region as technically s3 is region'd
# region = template_url.netloc.split('.')[1]
bucket_name, key_name = template_url_parts.path.lstrip(
"/").split("/", 1)
else:
bucket_name = template_url_parts.netloc.split(".")[0]
key_name = template_url_parts.path.lstrip("/")
key = s3_backend.get_object(bucket_name, key_name)
return key.value.decode("utf-8")
