| 1 | // SPDX-License-Identifier: GPL-3.0-or-later |
| 2 | |
| 3 | package hddtemp |
| 4 | |
| 5 | import ( |
| 6 | "errors" |
| 7 | "fmt" |
| 8 | "strconv" |
| 9 | "strings" |
| 10 | ) |
| 11 | |
| 12 | type diskStats struct { |
| 13 | devPath string |
| 14 | model string |
| 15 | temperature string |
| 16 | unit string |
| 17 | } |
| 18 | |
| 19 | func (c *Collector) collect() (map[string]int64, error) { |
| 20 | msg, err := c.conn.queryHddTemp() |
| 21 | if err != nil { |
| 22 | return nil, err |
| 23 | } |
| 24 | |
| 25 | c.Debugf("hddtemp daemon response: %s", msg) |
| 26 | |
| 27 | disks, err := parseHddTempMessage(msg) |
| 28 | if err != nil { |
| 29 | return nil, err |
| 30 | } |
| 31 | |
| 32 | mx := make(map[string]int64) |
| 33 | |
| 34 | for _, disk := range disks { |
| 35 | id := getDiskID(disk) |
| 36 | if id == "" { |
| 37 | c.Debugf("can not extract disk id from '%s'", disk.devPath) |
| 38 | continue |
| 39 | } |
| 40 | |
| 41 | if !c.disks[id] { |
| 42 | c.disks[id] = true |
| 43 | c.addDiskTempSensorStatusChart(id, disk) |
| 44 | } |
| 45 | |
| 46 | px := fmt.Sprintf("disk_%s_", id) |
| 47 | |
| 48 | for _, st := range []string{"ok", "na", "unk", "nos", "slp", "err"} { |
| 49 | mx[px+"temp_sensor_status_"+st] = 0 |
| 50 | } |
| 51 | switch disk.temperature { |
| 52 | case "NA": |
| 53 | mx[px+"temp_sensor_status_na"] = 1 |
| 54 | case "UNK": |
| 55 | mx[px+"temp_sensor_status_unk"] = 1 |
| 56 | case "NOS": |
| 57 | mx[px+"temp_sensor_status_nos"] = 1 |
| 58 | case "SLP": |
| 59 | mx[px+"temp_sensor_status_slp"] = 1 |
| 60 | case "ERR": |
| 61 | mx[px+"temp_sensor_status_err"] = 1 |
| 62 | default: |
| 63 | if v, ok := getTemperature(disk); ok { |
| 64 | if !c.disksTemp[id] { |
| 65 | c.disksTemp[id] = true |
| 66 | c.addDiskTempChart(id, disk) |
| 67 | } |
| 68 | mx[px+"temp_sensor_status_ok"] = 1 |
| 69 | mx[px+"temperature"] = v |
| 70 | } else { |
| 71 | mx[px+"temp_sensor_status_unk"] = 1 |
| 72 | } |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | return mx, nil |
| 77 | } |
| 78 | |
| 79 | func getDiskID(d diskStats) string { |
| 80 | i := strings.LastIndexByte(d.devPath, '/') |
| 81 | if i == -1 { |
| 82 | return "" |
| 83 | } |
| 84 | return d.devPath[i+1:] |
| 85 | } |
| 86 | |
| 87 | func getTemperature(d diskStats) (int64, bool) { |
| 88 | v, err := strconv.ParseInt(d.temperature, 10, 64) |
| 89 | if err != nil { |
| 90 | return 0, false |
| 91 | } |
| 92 | if d.unit == "F" { |
| 93 | v = (v - 32) * 5 / 9 |
| 94 | } |
| 95 | return v, true |
| 96 | } |
| 97 | |
| 98 | func parseHddTempMessage(msg string) ([]diskStats, error) { |
| 99 | if msg == "" { |
| 100 | return nil, errors.New("empty hddtemp message") |
| 101 | } |
| 102 | |
| 103 | // https://github.com/guzu/hddtemp/blob/e16aed6d0145d7ad8b3308dd0b9199fc701c0417/src/daemon.c#L165 |
| 104 | parts := strings.Split(msg, "|") |
| 105 | |
| 106 | var i int |
| 107 | // remove empty values |
| 108 | for _, v := range parts { |
| 109 | if v = strings.TrimSpace(v); v != "" { |
| 110 | parts[i] = v |
| 111 | i++ |
| 112 | } |
| 113 | } |
| 114 | parts = parts[:i] |
| 115 | |
| 116 | if len(parts) == 0 || len(parts)%4 != 0 { |
| 117 | return nil, errors.New("invalid hddtemp output format") |
| 118 | } |
| 119 | |
| 120 | var disks []diskStats |
| 121 | |
| 122 | for i := 0; i < len(parts); i += 4 { |
| 123 | disks = append(disks, diskStats{ |
| 124 | devPath: parts[i], |
| 125 | model: parts[i+1], |
| 126 | temperature: parts[i+2], |
| 127 | unit: parts[i+3], |
| 128 | }) |
| 129 | } |
| 130 | |
| 131 | return disks, nil |
| 132 | } |