Fixed #398 FastAPI integration fails if docs are disabled.

rollbar/contrib/fastapi/utils.py

@@ -97,16 +97,19 @@ def get_installed_middlewares(app):
 
 
 def has_bare_routing(app_or_router):
-    expected_app_routes = 4
-    expected_router_routes = 0
-
-    if (
-        isinstance(app_or_router, FastAPI)
-        and expected_app_routes != len(app_or_router.routes)
-    ) or (
-        isinstance(app_or_router, APIRouter)
-        and expected_router_routes != len(app_or_router.routes)
-    ):
+    if not isinstance(app_or_router, (FastAPI, APIRouter)):
+        return False
+
+    urls = [
+        app_or_router.getattr('openapi_url', None),
+        app_or_router.getattr('docs_url', None),
+        app_or_router.getattr('redoc_url', None),
+        app_or_router.getattr('swagger_ui_oauth2_redirect_url', None),
+    ]
+
+    for route in app_or_router.routes:
+        if route is None or route.path in urls:
+            continue
         return False
 
     return True