From 11724ad0d953c52ea48d6a17b2a74c2ac9ef76d0 Mon Sep 17 00:00:00 2001
From: David Rodenkirchen <davidr.develop@gmail.com>
Date: Thu, 28 May 2026 13:10:01 +0200
Subject: [PATCH] improve error handling

---
 src/elm/services/DatabaseService.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/elm/services/DatabaseService.py b/src/elm/services/DatabaseService.py
index 4fa5985..2ea6e11 100644
--- a/src/elm/services/DatabaseService.py
+++ b/src/elm/services/DatabaseService.py
@@ -1,8 +1,10 @@
 import logging
+import sys
 
 from beanie import init_beanie
 from pymongo import AsyncMongoClient
 from pymongo.asynchronous.collection import AsyncCollection
+from pymongo.errors import ServerSelectionTimeoutError, OperationFailure
 
 from elm.types import User, Transaction, Ticket, Seat, CateringTypes
 from elm.types.ConfigurationTypes import DatabaseConfiguration
@@ -30,6 +32,15 @@ class DatabaseService:
         if self._client is None:
             self._client = AsyncMongoClient(mongo_uri)
 
+            try:
+                await self._client.admin.command("ping")
+            except ServerSelectionTimeoutError:
+                print("Could not connect to mongodb")
+                sys.exit(1)
+            except OperationFailure:
+                print("Authentication with mongodb failed")
+                sys.exit(1)
+
             self._database = self._client[
                 self._db_config.database_name
             ]