From 797c44d30b191cb7e07b07890951ca54ddde5a88 Mon Sep 17 00:00:00 2001
From: Craig Tiller <ctiller@google.com>
Date: Thu, 7 Dec 2023 17:14:30 +0000
Subject: [PATCH] impl-deadline

---
 src/core/ext/filters/deadline/deadline_filter.cc | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/src/core/ext/filters/deadline/deadline_filter.cc b/src/core/ext/filters/deadline/deadline_filter.cc
index 50ce988173e..8eb60f4adf6 100644
--- a/src/core/ext/filters/deadline/deadline_filter.cc
+++ b/src/core/ext/filters/deadline/deadline_filter.cc
@@ -369,7 +369,17 @@ const grpc_channel_filter grpc_server_deadline_filter = {
       }
       return next_promise_factory(std::move(call_args));
     },
-    /* init_call: */ nullptr,
+    [](grpc_channel_element* elem, grpc_core::CallSpineInterface* spine) {
+      spine->client_initial_metadata().receiver.InterceptAndMap(
+          [](grpc_core::ClientMetadataHandle md) {
+            auto deadline = md->get(grpc_core::GrpcTimeoutMetadata());
+            if (deadline.has_value()) {
+              grpc_core::GetContext<grpc_core::CallContext>()->UpdateDeadline(
+                  *deadline);
+            }
+            return md;
+          });
+    },
     grpc_channel_next_op,
     sizeof(server_call_data),
     deadline_init_call_elem,