59 lines
2.2 KiB
Lua
59 lines
2.2 KiB
Lua
#!/usr/bin/lua
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local fs = require "nixio.fs"
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local function rtrim(s)
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return string.gsub(s, "\n$", "")
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end
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local function scrape()
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local metric_chip_names = metric("node_hwmon_chip_names", "gauge")
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local metric_sensor_label = metric("node_hwmon_sensor_label", "gauge")
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local metric_temp_celsius = metric("node_hwmon_temp_celsius", "gauge")
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local metric_pwm = metric("node_hwmon_pwm", "gauge")
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for hwmon_path in fs.glob("/sys/class/hwmon/hwmon*") do
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-- Produce node_hwmon_chip_names
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-- See https://github.com/prometheus/node_exporter/blob/7c564bcbeffade3dacac43b07c2eeca4957ca71d/collector/hwmon_linux.go#L415
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local chip_name = rtrim(get_contents(hwmon_path .. "/name"))
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if chip_name == "" then
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chip_name = fs.basename(hwmon_path)
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end
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-- See https://github.com/prometheus/node_exporter/blob/7c564bcbeffade3dacac43b07c2eeca4957ca71d/collector/hwmon_linux.go#L355
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local chip = chip_name
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local real_dev_path, status = fs.realpath(hwmon_path .. "/device")
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if not status then
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local dev_name = fs.basename(real_dev_path)
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local dev_type = fs.basename(fs.dirname(real_dev_path))
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chip = dev_type .. "_" .. dev_name
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end
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metric_chip_names({chip=chip, chip_name=chip_name}, 1)
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-- Produce node_hwmon_sensor_label
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for sensor_path in fs.glob(hwmon_path .. "/*_label") do
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local sensor = string.gsub(fs.basename(sensor_path), "_label$", "")
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local sensor_label = rtrim(get_contents(sensor_path))
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metric_sensor_label({chip=chip, sensor=sensor, label=sensor_label}, 1)
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end
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-- Produce node_hwmon_temp_celsius
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for sensor_path in fs.glob(hwmon_path .. "/temp*_input") do
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local sensor = string.gsub(fs.basename(sensor_path), "_input$", "")
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local temp = get_contents(sensor_path) / 1000
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metric_temp_celsius({chip=chip, sensor=sensor}, temp)
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end
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-- Produce node_hwmon_pwm
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for sensor_path in fs.glob(hwmon_path .. "/pwm*") do
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local sensor = fs.basename(sensor_path)
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if string.match(sensor, "^pwm[0-9]+$") then
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local pwm = rtrim(get_contents(sensor_path))
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metric_pwm({chip=chip, sensor=sensor}, pwm)
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end
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end
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end
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end
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return { scrape = scrape }
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