fixup! Fix: Service responses are not compressed (#6360)

src/azul/terraform.py

@@ -793,13 +793,15 @@ def tf_config(self, app_name):
         del deployment['lifecycle']
         deployment['triggers'] = {'redeployment': deployment.pop('stage_description')}
 
-        # Instead of specifying this property in the related Terraform
-        # resource, using an AWS API Gateway extension to the OpenAPI
-        # specification lets us avoid maintaining a complicated trigger
-        # dependency between Terraform resources.
+        # Using Terraform to specify the REST API minimum compression size
+        # proved to be problematic as first an UpdateRestApi call would be made
+        # to set the property, followed by a PutRestApi call with mode=overwrite
+        # which would reset the property back to its default value of disabled.
+        # Using AWS API Gateway extensions to the OpenAPI specification to set
+        # this property instead works around this issue.
         #
         rest_api = resources['aws_api_gateway_rest_api'][app_name]
-        assert 'minimum_compression_size' not in rest_api, rest_api.keys()
+        assert 'minimum_compression_size' not in rest_api, rest_api
         openapi_spec = json.loads(locals[app_name])
         key = 'x-amazon-apigateway-minimum-compression-size'
         openapi_spec[key] = config.minimum_compression_size