# HG changeset patch
# User Kim Alvefur <zash@zash.se>
# Date 1630616818 -7200
# Node ID 1b81b7269858f927ea9ad60110acf121e6dc8247
# Parent  d3434fd151b5c7b9f8e5271a981dd48ae2445522
mod_http_oauth2: Gracefully handle cache write failure

Would previously have thrown an error and probably returned a traceback.
This would only happen if a *lot* of authorization codes were requested
in a short interval.

diff -r d3434fd151b5 -r 1b81b7269858 mod_http_oauth2/mod_http_oauth2.lua
--- a/mod_http_oauth2/mod_http_oauth2.lua	Thu Sep 02 23:03:41 2021 +0200
+++ b/mod_http_oauth2/mod_http_oauth2.lua	Thu Sep 02 23:06:58 2021 +0200
@@ -102,11 +102,14 @@
 	local granted_scopes = filter_scopes(granted_jid, params.scope);
 
 	local code = uuid.generate();
-	assert(codes:set(params.client_id .. "#" .. code, {
+	local ok = codes:set(params.client_id .. "#" .. code, {
 		issued = os.time();
 		granted_jid = granted_jid;
 		granted_scopes = granted_scopes;
-	}));
+	});
+	if not ok then
+		return {status_code = 429};
+	end
 
 	local redirect = url.parse(params.redirect_uri);
 	local query = http.formdecode(redirect.query or "");