mod_http_file_share: Report number of items in caches to statsmanager This is neat, O(1) reporting, why don't we do this everywhere? Gives you an idea of how much stuff is in the caches, which may help inform decisions on whether the size is appropriate.

author: Kim Alvefur <zash@zash.se>
date: Sun, 28 Mar 2021 13:15:11 +0200
parent: 11406:9d6545a7d483
child: 11493:77f2d45799ed
--- a/plugins/mod_http_file_share.lua	Tue Mar 16 02:44:22 2021 +0100
+++ b/plugins/mod_http_file_share.lua	Sun Mar 28 13:15:11 2021 +0200
@@ -62,6 +62,14 @@
 local upload_cache = cache.new(1024);
 local quota_cache = cache.new(1024);
 
+local measure_upload_cache_size = module:measure("upload_cache", "amount");
+local measure_quota_cache_size = module:measure("quota_cache", "amount");
+
+module:hook_global("stats-update", function ()
+	measure_upload_cache_size(upload_cache:count());
+	measure_quota_cache_size(quota_cache:count());
+end);
+
 local measure_uploads = module:measure("upload", "sizes");
 
 -- Convenience wrapper for logging file sizes