Merge branch 'main' into ishymko/improve-linter-ci

Author: ishymko

src/a2a/utils/proto_utils.py

@@ -174,7 +174,10 @@ def parse_params(params: QueryParams, message: ProtobufMessage) -> None:
         field = fields[k]
         v_list = params.getlist(k)
 
-        if field.label == field.LABEL_REPEATED:
+        # TODO(https://github.com/a2aproject/a2a-python/issues/1011): Replace
+        # deprecated `field.label` with `field.is_repeated` once the minimum
+        # protobuf version requirement is bumped.
+        if field.label == FieldDescriptor.LABEL_REPEATED:
             accumulated: list[Any] = []
             for v in v_list:
                 if not v:
@@ -208,7 +211,10 @@ def _check_required_field_violation(
 ) -> ValidationDetail | None:
     """Check if a required field is missing or invalid."""
     val = getattr(msg, field.name)
-    if field.is_repeated:
+    # TODO(https://github.com/a2aproject/a2a-python/issues/1011): Replace
+    # deprecated `field.label` with `field.is_repeated` once the minimum
+    # protobuf version requirement is bumped.
+    if field.label == FieldDescriptor.LABEL_REPEATED:
         if not val:
             return ValidationDetail(
                 field=field.name,
@@ -249,7 +255,10 @@ def _recurse_validation(
         return errors
 
     val = getattr(msg, field.name)
-    if not field.is_repeated:
+    # TODO(https://github.com/a2aproject/a2a-python/issues/1011): Replace
+    # deprecated `field.label` with `field.is_repeated` once the minimum
+    # protobuf version requirement is bumped.
+    if field.label != FieldDescriptor.LABEL_REPEATED:
         if msg.HasField(field.name):
             sub_errs = _validate_proto_required_fields_internal(val)
             _append_nested_errors(errors, field.name, sub_errs)