add events

order-events/app/events/billing/append_enrollment.py

@@ -44,6 +44,8 @@ def lambda_handler(event: EventBridgeEvent, context: LambdaContext) -> bool:
     org_id = new_image['org_id']
     enrollment = enrollment_layer.collection.get_items(
         TransactKey(new_image['id']) + SortKey('0') + SortKey('author')
+        # Post-migration: uncomment the following line
+        # + SortKey('CREATED_BY')
     )
 
     if not enrollment:
@@ -97,7 +99,7 @@ def lambda_handler(event: EventBridgeEvent, context: LambdaContext) -> bool:
 
     # Add enrollment entry to billing
     try:
-        author = enrollment.get('author')
+        canceled_by = enrollment.get('author')
         course_id = enrollment['course']['id']
         course = course_layer.collection.get_items(
             KeyPair(
@@ -129,11 +131,11 @@ def lambda_handler(event: EventBridgeEvent, context: LambdaContext) -> bool:
                 | (
                     {
                         'author': {
-                            'id': author['user_id'],
-                            'name': author['name'],
+                            'id': canceled_by['user_id'],
+                            'name': canceled_by['name'],
                         }
                     }
-                    if author
+                    if canceled_by
                     else {}
                 ),
                 cond_expr='attribute_not_exists(sk)',