From 57b3b2c175b00a82a27bfec8f14a77b99a387ceb Mon Sep 17 00:00:00 2001
From: Duc Nguyen <minh-duc.nguyen-nam@ekino.com>
Date: Thu, 23 Jul 2026 16:02:01 +0700
Subject: [PATCH] fix(console-log): initialize capture at server boot + prevent
 SSE proxy buffering

Initialize initConsoleLogCapture() via Next.js instrumentation register()
hook so logs are captured from startup in headless/Docker deployments, and
add X-Accel-Buffering/Cache-Control headers to the SSE stream route to
prevent reverse proxies from buffering the initial payload.
---
 src/app/api/translator/console-logs/stream/route.js | 3 ++-
 src/instrumentation.js                              | 6 ++++++
 2 files changed, 8 insertions(+), 1 deletion(-)
 create mode 100644 src/instrumentation.js

diff --git a/src/app/api/translator/console-logs/stream/route.js b/src/app/api/translator/console-logs/stream/route.js
index 5eb3ae37..51ed3702 100644
--- a/src/app/api/translator/console-logs/stream/route.js
+++ b/src/app/api/translator/console-logs/stream/route.js
@@ -83,8 +83,9 @@ export async function GET(request) {
   return new Response(stream, {
     headers: {
       "Content-Type": "text/event-stream",
-      "Cache-Control": "no-cache",
+      "Cache-Control": "no-cache, no-transform",
       "Connection": "keep-alive",
+      "X-Accel-Buffering": "no",
     },
   });
 }
diff --git a/src/instrumentation.js b/src/instrumentation.js
new file mode 100644
index 00000000..f511eae2
--- /dev/null
+++ b/src/instrumentation.js
@@ -0,0 +1,6 @@
+export async function register() {
+  if (process.env.NEXT_RUNTIME === "nodejs") {
+    const { initConsoleLogCapture } = await import("@/lib/consoleLogBuffer");
+    initConsoleLogCapture();
+  }
+}