From f5fa209bb02ceed255fc8caff8f5ee3f3b7640f4 Mon Sep 17 00:00:00 2001
From: jif <jif@openai.com>
Date: Tue, 6 Oct 2026 10:27:27 +0000
Subject: [PATCH] Measure total Guardian approval decision duration (#51330)

## What changed

Add `codex.guardian.decision.duration_ms` around the complete approval decision operation, including fast decisions, preparation, and cancellation alongside model review time.

GitOrigin-RevId: e5a8d5a3b9a0ff81e1b866be87b8f3a439ae6a1d
---
 codex-rs/ext/guardian-reviewer/src/routing.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/codex-rs/ext/guardian-reviewer/src/routing.rs b/codex-rs/ext/guardian-reviewer/src/routing.rs
index e12a6ecefb..aed5e95409 100644
--- a/codex-rs/ext/guardian-reviewer/src/routing.rs
+++ b/codex-rs/ext/guardian-reviewer/src/routing.rs
@@ -66,6 +66,11 @@ impl<H: ReviewHost> ReviewRequest<'_, H> {
         mut self,
         registry: &ExtensionRegistry<C>,
     ) -> Option<ReviewDecision> {
+        // Include fast decisions, preparation and cancellation, not just model review time.
+        let _decision_timer = self
+            .telemetry
+            .start_timer("codex.guardian.decision.duration_ms", &[])
+            .ok();
         let runtime = self.thread_store.get::<crate::ReviewerTasks>();
         let _task = runtime.as_ref().map(|runtime| runtime.tasks.token());
         if runtime