Added way to remove filters from channel stack builder

1 files changed, 9 insertions, 3 deletions

diff --git a/src/core/ext/filters/load_reporting/load_reporting.c b/src/core/ext/filters/load_reporting/load_reporting.c
index 9745763c91..b42aa99cdb 100644
--- a/src/core/ext/filters/load_reporting/load_reporting.c
+++ b/src/core/ext/filters/load_reporting/load_reporting.c
@@ -42,9 +42,15 @@ static bool maybe_add_load_reporting_filter(grpc_exec_ctx *exec_ctx,
                                             void *arg) {
   const grpc_channel_args *args =
       grpc_channel_stack_builder_get_channel_arguments(builder);
-  if (is_load_reporting_enabled(args)) {
-    return grpc_channel_stack_builder_prepend_filter(
-        builder, (const grpc_channel_filter *)arg, NULL, NULL);
+  const grpc_channel_filter *filter = arg;
+  grpc_channel_stack_builder_iterator *it =
+      grpc_channel_stack_builder_iterator_find(builder, filter->name);
+  const bool already_has_load_reporting_filter =
+      !grpc_channel_stack_builder_iterator_is_end(it);
+  grpc_channel_stack_builder_iterator_destroy(it);
+  if (is_load_reporting_enabled(args) && !already_has_load_reporting_filter) {
+    return grpc_channel_stack_builder_prepend_filter(builder, filter, NULL,
+                                                     NULL);
   }
   return true;
 }