# HG changeset patch
# User Matthew Wild <mwild1@gmail.com>
# Date 1705147395 0
# Node ID f76909ec13000d5b0b63997223227c79e47aa326
# Parent  791aa8072f58745a01973889aa13e422034e2098
mod_http_admin_api: metrics: Filter out a value that is commonly nan at startup

The upload bytes count is typically nan at startup, which cannot legally be
encoded in JSON.

I haven't assessed whether any other metrics might emit nan under other
circumstances, but this fixes the most visible issue right now.

diff -r 791aa8072f58 -r f76909ec1300 mod_http_admin_api/mod_http_admin_api.lua
--- a/mod_http_admin_api/mod_http_admin_api.lua	Fri Jan 12 18:21:08 2024 +0000
+++ b/mod_http_admin_api/mod_http_admin_api.lua	Sat Jan 13 12:03:15 2024 +0000
@@ -748,7 +748,7 @@
 	for _, metric in mf:iter_metrics() do
 		sum = sum + metric.value;
 	end
-	return sum;
+	return (sum == sum) and sum or nil; -- Filter out nan
 end
 
 local function get_server_metrics(event)