1 files changed, 27 insertions, 11 deletions

diff --git a/src/core/ext/transport/chttp2/transport/context_list.cc b/src/core/ext/transport/chttp2/transport/context_list.cc
index f30d41c332..df09809067 100644
--- a/src/core/ext/transport/chttp2/transport/context_list.cc
+++ b/src/core/ext/transport/chttp2/transport/context_list.cc
@@ -21,31 +21,47 @@
 #include "src/core/ext/transport/chttp2/transport/context_list.h"
 
 namespace {
-void (*write_timestamps_callback_g)(void*, grpc_core::Timestamps*) = nullptr;
-}
+void (*write_timestamps_callback_g)(void*, grpc_core::Timestamps*,
+                                    grpc_error* error) = nullptr;
+void* (*get_copied_context_fn_g)(void*) = nullptr;
+}  // namespace
 
 namespace grpc_core {
+void ContextList::Append(ContextList** head, grpc_chttp2_stream* s) {
+  if (get_copied_context_fn_g == nullptr ||
+      write_timestamps_callback_g == nullptr) {
+    return;
+  }
+  /* Create a new element in the list and add it at the front */
+  ContextList* elem = grpc_core::New<ContextList>();
+  elem->trace_context_ = get_copied_context_fn_g(s->context);
+  elem->byte_offset_ = s->byte_counter;
+  elem->next_ = *head;
+  *head = elem;
+}
+
 void ContextList::Execute(void* arg, grpc_core::Timestamps* ts,
                           grpc_error* error) {
   ContextList* head = static_cast<ContextList*>(arg);
   ContextList* to_be_freed;
   while (head != nullptr) {
-    if (error == GRPC_ERROR_NONE && ts != nullptr) {
-      if (write_timestamps_callback_g) {
-        ts->byte_offset = static_cast<uint32_t>(head->byte_offset_);
-        write_timestamps_callback_g(head->s_->context, ts);
-      }
+    if (write_timestamps_callback_g) {
+      ts->byte_offset = static_cast<uint32_t>(head->byte_offset_);
+      write_timestamps_callback_g(head->trace_context_, ts, error);
     }
-    GRPC_CHTTP2_STREAM_UNREF(static_cast<grpc_chttp2_stream*>(head->s_),
-                             "timestamp");
     to_be_freed = head;
     head = head->next_;
     grpc_core::Delete(to_be_freed);
   }
 }
 
-void grpc_http2_set_write_timestamps_callback(
-    void (*fn)(void*, grpc_core::Timestamps*)) {
+void grpc_http2_set_write_timestamps_callback(void (*fn)(void*,
+                                                         grpc_core::Timestamps*,
+                                                         grpc_error* error)) {
   write_timestamps_callback_g = fn;
 }
+
+void grpc_http2_set_fn_get_copied_context(void* (*fn)(void*)) {
+  get_copied_context_fn_g = fn;
+}
 } /* namespace grpc_core */