Minimal stack test

2 files changed, 15 insertions, 0 deletions

diff --git a/src/core/lib/channel/channel_stack_builder.c b/src/core/lib/channel/channel_stack_builder.c
index b515b7321a..88c02edb70 100644
--- a/src/core/lib/channel/channel_stack_builder.c
+++ b/src/core/lib/channel/channel_stack_builder.c
@@ -113,6 +113,17 @@ grpc_channel_stack_builder_create_iterator_at_last(
   return create_iterator_at_filter_node(builder, &builder->end);
 }
 
+bool grpc_channel_stack_builder_iterator_is_end(
+    grpc_channel_stack_builder_iterator *iterator) {
+  return iterator->node == &iterator->builder->end;
+}
+
+const char *grpc_channel_stack_builder_iterator_filter_name(
+    grpc_channel_stack_builder_iterator *iterator) {
+  if (iterator->node->filter == NULL) return NULL;
+  return iterator->node->filter->name;
+}
+
 bool grpc_channel_stack_builder_move_next(
     grpc_channel_stack_builder_iterator *iterator) {
   if (iterator->node == &iterator->builder->end) return false;
diff --git a/src/core/lib/channel/channel_stack_builder.h b/src/core/lib/channel/channel_stack_builder.h
index 8adf38e27b..c78111b00d 100644
--- a/src/core/lib/channel/channel_stack_builder.h
+++ b/src/core/lib/channel/channel_stack_builder.h
@@ -98,6 +98,10 @@ bool grpc_channel_stack_builder_iterator_is_first(
 bool grpc_channel_stack_builder_iterator_is_end(
     grpc_channel_stack_builder_iterator *iterator);
 
+/// What is the name of the filter at this iterator position?
+const char *grpc_channel_stack_builder_iterator_filter_name(
+    grpc_channel_stack_builder_iterator *iterator);
+
 /// Move an iterator to the next item
 bool grpc_channel_stack_builder_move_next(
     grpc_channel_stack_builder_iterator *iterator);