From 1237e196b47dbbd7cac7cf7cabe4b8c86e09e0da Mon Sep 17 00:00:00 2001 From: Alex Tomlins Date: Sun, 7 Apr 2019 14:01:12 +0100 Subject: [PATCH] prometheus-node-exporter-lua: Add wifi_station_count To return the number of connected clients. At present this can be partially inferred by using a count() over one of the existing metrics, however this doesn't handle the case when there are no connected clients. When that happens, the count() will return no data instead of 0. Signed-off-by: Alex Tomlins --- .../files/usr/lib/lua/prometheus-collectors/wifi_stations.lua | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/utils/prometheus-node-exporter-lua/files/usr/lib/lua/prometheus-collectors/wifi_stations.lua b/utils/prometheus-node-exporter-lua/files/usr/lib/lua/prometheus-collectors/wifi_stations.lua index d9095a969..25c144f02 100644 --- a/utils/prometheus-node-exporter-lua/files/usr/lib/lua/prometheus-collectors/wifi_stations.lua +++ b/utils/prometheus-node-exporter-lua/files/usr/lib/lua/prometheus-collectors/wifi_stations.lua @@ -2,6 +2,7 @@ local ubus = require "ubus" local iwinfo = require "iwinfo" local function scrape() + local metric_wifi_stations = metric("wifi_stations", "gauge") local metric_wifi_station_signal = metric("wifi_station_signal_dbm","gauge") local metric_wifi_station_tx_packets = metric("wifi_station_tx_packets_total","counter") local metric_wifi_station_rx_packets = metric("wifi_station_rx_packets_total","counter") @@ -13,6 +14,7 @@ local function scrape() for _, intf in ipairs(dev_table['interfaces']) do local ifname = intf['ifname'] local iw = iwinfo[iwinfo.type(ifname)] + local count = 0 local assoclist = iw.assoclist(ifname) for mac, station in pairs(assoclist) do @@ -23,7 +25,9 @@ local function scrape() metric_wifi_station_signal(labels, station.signal) metric_wifi_station_tx_packets(labels, station.tx_packets) metric_wifi_station_rx_packets(labels, station.rx_packets) + count = count + 1 end + metric_wifi_stations({ifname = ifname}, count) end end end