From afad90673a3cf1bd72a8bb950ec615ba1f1c6621 Mon Sep 17 00:00:00 2001
From: deepfotello <deepfotello@gmail.com>
Date: Thu, 2 Apr 2026 12:37:09 +0530
Subject: [PATCH] fix(eventarc): set eventTrigger.region from channel to
 prevent unnecessary delete+recreate on deploy

---
 src/v2/providers/eventarc.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/v2/providers/eventarc.ts b/src/v2/providers/eventarc.ts
index f00597bab..e02225218 100644
--- a/src/v2/providers/eventarc.ts
+++ b/src/v2/providers/eventarc.ts
@@ -201,6 +201,8 @@ export function onCustomEventPublished<T = any>(
   func.run = handler;
 
   const channel = opts.channel ?? "locations/us-central1/channels/firebase";
+  const channelRegionMatch = channel.match(/locations\/([^/]+)\/channels\//);
+  const triggerRegion = channelRegionMatch ? channelRegionMatch[1] : "us-central1";
 
   const baseOpts = options.optionsToEndpoint(options.getGlobalOptions());
   const specificOpts = options.optionsToEndpoint(opts);
@@ -219,6 +221,7 @@ export function onCustomEventPublished<T = any>(
       eventFilters: {},
       retry: opts.retry ?? false,
       channel,
+      region: triggerRegion,
     },
   };
   convertIfPresent(endpoint.eventTrigger, opts, "eventFilters", "filters");