From 380a519b2da4db6c4ca68fc9fab140b840106557 Mon Sep 17 00:00:00 2001
From: Dominik Henneke <dominik.henneke@sda-se.com>
Date: Wed, 7 Jul 2021 09:47:13 +0200
Subject: [PATCH] Add a warning to the deprecated non-eventsource sync endpoint

Signed-off-by: Dominik Henneke <dominik.henneke@sda-se.com>
---
 plugins/techdocs-backend/src/service/router.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/plugins/techdocs-backend/src/service/router.ts b/plugins/techdocs-backend/src/service/router.ts
index 8b189cff16..53f262ac6c 100644
--- a/plugins/techdocs-backend/src/service/router.ts
+++ b/plugins/techdocs-backend/src/service/router.ts
@@ -127,6 +127,9 @@ export async function createRouter({
     await docsSynchronizer.doSync(
       () => {
         if (req.header('accept') !== 'text/event-stream') {
+          console.warn(
+            "The /sync/:namespace/:kind/:name endpoint but the call wasn't done by an EventSource. This behavior is deprecated and will be removed soon. Make sure to update the @backstage/plugin-techdocs package in the frontend to the latest version.",
+          );
           return createHttpResponse(res);
         }