From 63097135d72d1afe8731b6138af1974aace477af Mon Sep 17 00:00:00 2001
From: Vincent Sarago <vincent.sarago@gmail.com>
Date: Thu, 27 Jun 2024 22:19:43 +0200
Subject: [PATCH] raise RuntimeError if middleware stack has already been
 created when initialiazing StacApi (#722)

---
 stac_fastapi/api/stac_fastapi/api/app.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/stac_fastapi/api/stac_fastapi/api/app.py b/stac_fastapi/api/stac_fastapi/api/app.py
index b4f5125f..44a55764 100644
--- a/stac_fastapi/api/stac_fastapi/api/app.py
+++ b/stac_fastapi/api/stac_fastapi/api/app.py
@@ -478,6 +478,9 @@ def __attrs_post_init__(self):
         self.app.openapi = self.customize_openapi
 
         # add middlewares
+        if self.middlewares and self.app.middleware_stack is not None:
+            raise RuntimeError("Cannot add middleware after an application has started")
+
         for middleware in self.middlewares:
             self.app.user_middleware.insert(0, middleware)