From 70cc0e4536688f98ac75d5308f0b813b177923fe Mon Sep 17 00:00:00 2001
From: Marco Pedone <m.pedone98@gmail.com>
Date: Mon, 23 Mar 2026 12:01:18 +0100
Subject: [PATCH] feat: add error handling for database connection pool to
 manage admin shutdown during backup windows

---
 apps/infoalloggi/src/server/db.ts | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/apps/infoalloggi/src/server/db.ts b/apps/infoalloggi/src/server/db.ts
index e719bd2..30fdf9b 100644
--- a/apps/infoalloggi/src/server/db.ts
+++ b/apps/infoalloggi/src/server/db.ts
@@ -26,6 +26,19 @@ const pool = new Pool({
 	user: env.POSTGRES_USER,
 });
 
+pool.on("error", (err) => {
+	const pgErr = err as { code?: string };
+	// "admin_shutdown" error sent during backups
+	const isAdminShutdown = pgErr.code === "57P01";
+	const hour = new Date().getHours();
+	// Consider it a backup window if it's between 00:00 and 02:00
+	const isBackupWindow = hour === 0 || hour === 1;
+
+	if (isAdminShutdown && isBackupWindow) return;
+
+	console.error("PG error:", err);
+});
+
 type Db = typeof db;
 
 type Trx = Transaction<PublicSchema>;