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|
// SPDX-License-Identifier: GPL-3.0-or-later
package hddtemp
import (
"errors"
"fmt"
"strconv"
"strings"
)
type diskStats struct {
devPath string
model string
temperature string
unit string
}
func (h *HddTemp) collect() (map[string]int64, error) {
conn := h.newHddTempConn(h.Config)
if err := conn.connect(); err != nil {
return nil, err
}
defer conn.disconnect()
msg, err := conn.queryHddTemp()
if err != nil {
return nil, err
}
h.Debugf("hddtemp daemon response: %s", msg)
disks, err := parseHddTempMessage(msg)
if err != nil {
return nil, err
}
mx := make(map[string]int64)
for _, disk := range disks {
id := getDiskID(disk)
if id == "" {
h.Debugf("can not extract disk id from '%s'", disk.devPath)
continue
}
if !h.disks[id] {
h.disks[id] = true
h.addDiskTempSensorStatusChart(id, disk)
}
px := fmt.Sprintf("disk_%s_", id)
for _, st := range []string{"ok", "na", "unk", "nos", "slp", "err"} {
mx[px+"temp_sensor_status_"+st] = 0
}
switch disk.temperature {
case "NA":
mx[px+"temp_sensor_status_na"] = 1
case "UNK":
mx[px+"temp_sensor_status_unk"] = 1
case "NOS":
mx[px+"temp_sensor_status_nos"] = 1
case "SLP":
mx[px+"temp_sensor_status_slp"] = 1
case "ERR":
mx[px+"temp_sensor_status_err"] = 1
default:
if v, ok := getTemperature(disk); ok {
if !h.disksTemp[id] {
h.disksTemp[id] = true
h.addDiskTempChart(id, disk)
}
mx[px+"temp_sensor_status_ok"] = 1
mx[px+"temperature"] = v
} else {
mx[px+"temp_sensor_status_unk"] = 1
}
}
}
return mx, nil
}
func getDiskID(d diskStats) string {
i := strings.LastIndexByte(d.devPath, '/')
if i == -1 {
return ""
}
return d.devPath[i+1:]
}
func getTemperature(d diskStats) (int64, bool) {
v, err := strconv.ParseInt(d.temperature, 10, 64)
if err != nil {
return 0, false
}
if d.unit == "F" {
v = (v - 32) * 5 / 9
}
return v, true
}
func parseHddTempMessage(msg string) ([]diskStats, error) {
if msg == "" {
return nil, errors.New("empty hddtemp message")
}
// https://github.com/guzu/hddtemp/blob/e16aed6d0145d7ad8b3308dd0b9199fc701c0417/src/daemon.c#L165
parts := strings.Split(msg, "|")
var i int
// remove empty values
for _, v := range parts {
if v = strings.TrimSpace(v); v != "" {
parts[i] = v
i++
}
}
parts = parts[:i]
if len(parts) == 0 || len(parts)%4 != 0 {
return nil, errors.New("invalid hddtemp output format")
}
var disks []diskStats
for i := 0; i < len(parts); i += 4 {
disks = append(disks, diskStats{
devPath: parts[i],
model: parts[i+1],
temperature: parts[i+2],
unit: parts[i+3],
})
}
return disks, nil
}
|
