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prometheus-node-exporter-lua: fix hostapd stations

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We can only utilize statistics from interfaces having ubus interface.

Signed-off-by: Nick Hainke <vincent@systemli.org>
This commit is contained in:
Nick Hainke 2022-04-30 07:58:07 +02:00 committed by Etienne Champetier
parent 5a782988bd
commit 245d63426b
2 changed files with 60 additions and 34 deletions
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2
utils/prometheus-node-exporter-lua/Makefile
View file

@ -4,7 +4,7 @@
include $(TOPDIR)/rules.mk
PKG_NAME:=prometheus-node-exporter-lua
PKG_VERSION:=2022.06.29
PKG_VERSION:=2022.08.07
PKG_RELEASE:=1
PKG_MAINTAINER:=Etienne CHAMPETIER <champetier.etienne@gmail.com>

92
utils/prometheus-node-exporter-lua/files/usr/lib/lua/prometheus-collectors/hostapd_stations.lua
View file

@ -1,52 +1,78 @@
local ubus = require "ubus"
local bit32 = require "bit32"
local function get_wifi_interfaces()
local conn = ubus.connect()
local ubuslist = conn:objects()
local interfaces = {}
for _,net in ipairs(ubuslist) do
if net.find(net,"hostapd.") then
local ifname = net:gsub("hostapd.", "")
table.insert(interfaces, ifname);
end
end
conn:close()
return interfaces;
end
local function is_ubus_interface(ubus_interfaces, interface)
for i=1,#ubus_interfaces do
if ubus_interfaces[i] == interface then return true end
end
return false
end
local function get_wifi_interface_labels()
local u = ubus.connect()
local status = u:call("network.wireless", "status", {})
local interfaces = {}
local ubus_interfaces = get_wifi_interfaces()
for _, dev_table in pairs(status) do
for _, intf in ipairs(dev_table['interfaces']) do
local cfg = intf['config']
-- Migrate this to ubus interface once it exposes all interesting labels
local handle = io.popen("hostapd_cli -i " .. cfg['ifname'] .." status")
local hostapd_status = handle:read("*a")
handle:close()
if is_ubus_interface(ubus_interfaces, cfg['ifname']) then
local hostapd = {}
local bss_idx = -1
for line in hostapd_status:gmatch("[^\r\n]+") do
local name, value = string.match(line, "(.+)=(.+)")
if name == "freq" then
hostapd["freq"] = value
elseif name == "channel" then
hostapd["channel"] = value
-- hostapd gives us all bss on the relevant phy, find the one we're interested in
elseif string.match(name, "bss%[%d%]") then
if value == cfg['ifname'] then
bss_idx = tonumber(string.match(name, "bss%[(%d)%]"))
end
elseif bss_idx >= 0 then
if name == "bssid[" .. bss_idx .. "]" then
hostapd["bssid"] = value
elseif name == "ssid[" .. bss_idx .. "]" then
hostapd["ssid"] = value
-- Migrate this to ubus interface once it exposes all interesting labels
local handle = io.popen("hostapd_cli -i " .. cfg['ifname'] .." status")
local hostapd_status = handle:read("*a")
handle:close()
local hostapd = {}
local bss_idx = -1
for line in hostapd_status:gmatch("[^\r\n]+") do
local name, value = string.match(line, "(.+)=(.+)")
if name == "freq" then
hostapd["freq"] = value
elseif name == "channel" then
hostapd["channel"] = value
-- hostapd gives us all bss on the relevant phy, find the one we're interested in
elseif string.match(name, "bss%[%d%]") then
if value == cfg['ifname'] then
bss_idx = tonumber(string.match(name, "bss%[(%d)%]"))
end
elseif bss_idx >= 0 then
if name == "bssid[" .. bss_idx .. "]" then
hostapd["bssid"] = value
elseif name == "ssid[" .. bss_idx .. "]" then
hostapd["ssid"] = value
end
end
end
local labels = {
vif = cfg['ifname'],
ssid = hostapd['ssid'],
bssid = hostapd['bssid'],
encryption = cfg['encryption'], -- In a mixed scenario it would be good to know if A or B was used
frequency = hostapd['freq'],
channel = hostapd['channel'],
}
table.insert(interfaces, labels)
end
local labels = {
vif = cfg['ifname'],
ssid = hostapd['ssid'],
bssid = hostapd['bssid'],
encryption = cfg['encryption'], -- In a mixed scenario it would be good to know if A or B was used
frequency = hostapd['freq'],
channel = hostapd['channel'],
}
table.insert(interfaces, labels)
end
end