fix: transfer guard non-boolean

scripts/promote_dataset.py

@@ -15,19 +15,19 @@ class MissingFieldError(Exception):
 def validate_discovery_item_config(item: Dict[str, Any]) -> Dict[str, Any]:
     if "bucket" not in item:
         raise MissingFieldError(
-            "Missing required field 'bucket' in discovery item: {item}"
+            f"Missing required field 'bucket' in discovery item: {item}"
         )
     if "discovery" not in item:
         raise MissingFieldError(
-            "Missing required field 'discovery' in discovery item: {item}"
+            f"Missing required field 'discovery' in discovery item: {item}"
         )
     if "filename_regex" not in item:
         raise MissingFieldError(
-            "Missing required field 'filename_regex' in discovery item: {item}"
+            f"Missing required field 'filename_regex' in discovery item: {item}"
         )
     if "prefix" not in item:
         raise MissingFieldError(
-            "Missing required field 'prefix' in discovery item: {item}"
+            f"Missing required field 'prefix' in discovery item: {item}"
         )
     return item
 
@@ -114,13 +114,18 @@ def promote_to_production(payload):
 if __name__ == "__main__":
     try:
         with open(sys.argv[1], "r") as file:
-            input = json.load(file)
+            _input = json.load(file)
             stage = sys.argv[2]
-            discovery_items = input.get("discovery_items")
+            discovery_items = _input.get("discovery_items")
             validated_discovery_items = [
                 validate_discovery_item_config(item) for item in discovery_items
             ]
-            dag_payload = {"conf": input}
+            transfer = _input.get("transfer")
+            if transfer is not None and not isinstance(transfer, bool):
+                raise ValueError(
+                    f"Invalid value for 'transfer': {transfer!r}. Must be a boolean."
+                )
+            dag_payload = {"conf": _input}
             if stage == "production":
                 promote_to_production(dag_payload)
             elif stage == "staging":