From bd1207a8910fdbd61d5921b2da85a178d4d8b43a Mon Sep 17 00:00:00 2001
From: Sohan Kshirsagar <sohan.kshirsagar@gmail.com>
Date: Mon, 23 Mar 2026 17:12:25 -0700
Subject: [PATCH] feat: auto-mark app as ready on first inbound HTTP request

---
 src/core/TuskDrift.ts                                 | 8 ++++++--
 src/instrumentation/libraries/http/Instrumentation.ts | 5 ++++-
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/src/core/TuskDrift.ts b/src/core/TuskDrift.ts
index 7071c097..795346e0 100644
--- a/src/core/TuskDrift.ts
+++ b/src/core/TuskDrift.ts
@@ -170,12 +170,16 @@ export class TuskDriftCore {
     }
 
     if (!status.enabled) {
-      logger.info(`Rust core path disabled at startup (env=${envDisplay}, reason=${status.reason}).`);
+      logger.info(
+        `Rust core path disabled at startup (env=${envDisplay}, reason=${status.reason}).`,
+      );
       return;
     }
 
     if (status.bindingLoaded) {
-      logger.info(`Rust core path enabled at startup (env=${envDisplay}, reason=${status.reason}).`);
+      logger.info(
+        `Rust core path enabled at startup (env=${envDisplay}, reason=${status.reason}).`,
+      );
       return;
     }
 
diff --git a/src/instrumentation/libraries/http/Instrumentation.ts b/src/instrumentation/libraries/http/Instrumentation.ts
index 7f1a520e..92dfc8a4 100644
--- a/src/instrumentation/libraries/http/Instrumentation.ts
+++ b/src/instrumentation/libraries/http/Instrumentation.ts
@@ -1365,7 +1365,10 @@ export class HttpInstrumentation extends TdInstrumentationBase {
     return (originalEmit: Function) => {
       return function (this: Server, eventName: string, ...args: any[]) {
         if (eventName === "request") {
-          // Sample as soon as we can to avoid additional overhead if this request is not sampled
+          if (!self.tuskDrift.isAppReady()) {
+            self.tuskDrift.markAppAsReady();
+          }
+
           if (self.mode === TuskDriftMode.RECORD) {
             if (
               !shouldSample({