From: Martin Weinelt <hexa@darmstadt.ccc.de>
Date: Thu, 24 Jun 2021 15:50:01 +0000 (+0200)
Subject: prometheus-node-exporter-lua: handle empty lines in all_sta output correctly
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=0a9d2b818d4c0d6c1c8df59fde9808bae6ddb72d;p=feed%2Fpackages.git

prometheus-node-exporter-lua: handle empty lines in all_sta output correctly

An empty line has a name and value that is nil and setting a table
index to nil breaks metrics for every vif after the first one.

Signed-off-by: Martin Weinelt <hexa@darmstadt.ccc.de>
---

diff --git a/utils/prometheus-node-exporter-lua/files/usr/lib/lua/prometheus-collectors/hostapd_stations.lua b/utils/prometheus-node-exporter-lua/files/usr/lib/lua/prometheus-collectors/hostapd_stations.lua
index 9c56e586cf..39d1415cc8 100644
--- a/utils/prometheus-node-exporter-lua/files/usr/lib/lua/prometheus-collectors/hostapd_stations.lua
+++ b/utils/prometheus-node-exporter-lua/files/usr/lib/lua/prometheus-collectors/hostapd_stations.lua
@@ -129,7 +129,9 @@ local function scrape()
         current_station_values = {}
       else
         local name, value = string.match(line, "(.+)=(.+)")
-        current_station_values[name] = value
+        if name ~= nil then
+          current_station_values[name] = value
+        end
       end
     end
     labels.station = current_station