1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
|
// Copyright 2023 The Prometheus Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//go:build linux && !nowatchdog
// +build linux,!nowatchdog
package collector
import (
"errors"
"fmt"
"log/slog"
"os"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/procfs/sysfs"
)
type watchdogCollector struct {
fs sysfs.FS
logger *slog.Logger
}
func init() {
registerCollector("watchdog", defaultEnabled, NewWatchdogCollector)
}
// NewWatchdogCollector returns a new Collector exposing watchdog stats.
func NewWatchdogCollector(logger *slog.Logger) (Collector, error) {
fs, err := sysfs.NewFS(*sysPath)
if err != nil {
return nil, fmt.Errorf("failed to open procfs: %w", err)
}
return &watchdogCollector{
fs: fs,
logger: logger,
}, nil
}
var (
watchdogBootstatusDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "watchdog", "bootstatus"),
"Value of /sys/class/watchdog/<watchdog>/bootstatus",
[]string{"name"}, nil,
)
watchdogFwVersionDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "watchdog", "fw_version"),
"Value of /sys/class/watchdog/<watchdog>/fw_version",
[]string{"name"}, nil,
)
watchdogNowayoutDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "watchdog", "nowayout"),
"Value of /sys/class/watchdog/<watchdog>/nowayout",
[]string{"name"}, nil,
)
watchdogTimeleftDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "watchdog", "timeleft_seconds"),
"Value of /sys/class/watchdog/<watchdog>/timeleft",
[]string{"name"}, nil,
)
watchdogTimeoutDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "watchdog", "timeout_seconds"),
"Value of /sys/class/watchdog/<watchdog>/timeout",
[]string{"name"}, nil,
)
watchdogPretimeoutDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "watchdog", "pretimeout_seconds"),
"Value of /sys/class/watchdog/<watchdog>/pretimeout",
[]string{"name"}, nil,
)
watchdogAccessCs0Desc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "watchdog", "access_cs0"),
"Value of /sys/class/watchdog/<watchdog>/access_cs0",
[]string{"name"}, nil,
)
watchdogInfoDesc = prometheus.NewDesc(
prometheus.BuildFQName(namespace, "watchdog", "info"),
"Info of /sys/class/watchdog/<watchdog>",
[]string{"name", "options", "identity", "state", "status", "pretimeout_governor"}, nil,
)
)
func toLabelValue(ptr *string) string {
if ptr == nil {
return ""
}
return *ptr
}
func (c *watchdogCollector) Update(ch chan<- prometheus.Metric) error {
watchdogClass, err := c.fs.WatchdogClass()
if err != nil {
if errors.Is(err, os.ErrNotExist) || errors.Is(err, os.ErrPermission) || errors.Is(err, os.ErrInvalid) {
c.logger.Debug("Could not read watchdog stats", "err", err)
return ErrNoData
}
return err
}
for _, wd := range watchdogClass {
if wd.Bootstatus != nil {
ch <- prometheus.MustNewConstMetric(watchdogBootstatusDesc, prometheus.GaugeValue, float64(*wd.Bootstatus), wd.Name)
}
if wd.FwVersion != nil {
ch <- prometheus.MustNewConstMetric(watchdogFwVersionDesc, prometheus.GaugeValue, float64(*wd.FwVersion), wd.Name)
}
if wd.Nowayout != nil {
ch <- prometheus.MustNewConstMetric(watchdogNowayoutDesc, prometheus.GaugeValue, float64(*wd.Nowayout), wd.Name)
}
if wd.Timeleft != nil {
ch <- prometheus.MustNewConstMetric(watchdogTimeleftDesc, prometheus.GaugeValue, float64(*wd.Timeleft), wd.Name)
}
if wd.Timeout != nil {
ch <- prometheus.MustNewConstMetric(watchdogTimeoutDesc, prometheus.GaugeValue, float64(*wd.Timeout), wd.Name)
}
if wd.Pretimeout != nil {
ch <- prometheus.MustNewConstMetric(watchdogPretimeoutDesc, prometheus.GaugeValue, float64(*wd.Pretimeout), wd.Name)
}
if wd.AccessCs0 != nil {
ch <- prometheus.MustNewConstMetric(watchdogAccessCs0Desc, prometheus.GaugeValue, float64(*wd.AccessCs0), wd.Name)
}
ch <- prometheus.MustNewConstMetric(watchdogInfoDesc, prometheus.GaugeValue, 1.0,
wd.Name, toLabelValue(wd.Options), toLabelValue(wd.Identity), toLabelValue(wd.State), toLabelValue(wd.Status), toLabelValue(wd.PretimeoutGovernor))
}
return nil
}
|
