cloverstd · February 8, 2023 11:19 · Feb 8, 2023
diff --git a/temp.lua b/temp.lua
@@ -0,0 +1,86 @@
+--[[
+function print_metric(metric, labels, value)
+  local label_string = ""
+  if labels then
+    for label,value in pairs(labels) do
+      label_string =  label_string .. label .. '="' .. value .. '",'
+    end
+    label_string = "{" .. string.sub(label_string, 1, -2) .. "}"
+  end
+  io.write(string.format("%s%s %s", metric, label_string, value))
+end
+
+function metric(name, mtype, labels, value)
+  local outputter = function(labels, value)
+    print_metric(name, labels, value)
+  end
+  if value then
+    outputter(labels, value)
+  end
+  return outputter
+end
+--]]
+
+local function scrape()
+	local json = require "luci.jsonc"
+	local fs   = require "nixio.fs"
+
+	local sysHwmon   = "/sys/class/hwmon"
+	local sysThermal = "/sys/class/thermal"
+
+	local function readFile(path)
+		local s = fs.readfile(path)
+		return s and (s:gsub("^%s+", ""):gsub("%s+$", ""))
+	end
+
+	local function list()
+		io.write('{"getTempStatus":{}}')
+	end
+
+	local temp_metric = metric("sensor_temperature", "gauge")
+	-- /sys/class/hwmon
+	local hwmonDir = fs.dir(sysHwmon)
+	if hwmonDir then
+		local hwmon = {}
+		for item in hwmonDir do
+			if item:match("^hwmon[0-9]+$") then
+				local deviceDirPath = string.format("%s/%s", sysHwmon, item)
+				local deviceDir     = fs.dir(deviceDirPath)
+				if deviceDir then
+					local dNumber = tonumber(item:match("[0-9]+"))
+					local title   = readFile(deviceDirPath .. "/name")
+					for source in deviceDir do
+						if source:match("^temp[0-9]+_input$") then
+							local sNumber = tonumber(source:match("[0-9]+"))
+							local temp    = readFile(
+								string.format("%s/%s", deviceDirPath, source))
+-- 							local label   = readFile(
+-- 								string.format("%s/%s", deviceDirPath, source:gsub("_input$", "_label")))
+							if sNumber ~= nil and temp ~= nil then
+								temp_metric({name="hwmon_"..title..sNumber}, tonumber(temp))
+							end
+						end
+					end
+				end
+			end
+		end
+	end
+	-- /sys/class/thermal
+	local dir   = fs.dir(sysThermal)
+	if dir then
+		for item in dir do
+			if item:match("^thermal_zone[0-9]+$") then
+				local number = tonumber(item:match("[0-9]+"))
+				local temp   = readFile(string.format("%s/%s/temp", sysThermal, item))
+				local title  = readFile(string.format("%s/%s/type", sysThermal, item))
+				if number ~= nil and temp ~= nil then
+					temp_metric({name=title..number}, tonumber(temp))
+				end
+			end
+		end
+	end
+end
+
+-- scrape()
+
+return { scrape = scrape }