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
140
141
142
143
|
// SPDX-License-Identifier: GPL-3.0-or-later
package prometheus
import (
_ "embed"
"errors"
"time"
"github.com/netdata/netdata/go/go.d.plugin/agent/module"
"github.com/netdata/netdata/go/go.d.plugin/pkg/matcher"
"github.com/netdata/netdata/go/go.d.plugin/pkg/prometheus"
"github.com/netdata/netdata/go/go.d.plugin/pkg/prometheus/selector"
"github.com/netdata/netdata/go/go.d.plugin/pkg/web"
)
//go:embed "config_schema.json"
var configSchema string
func init() {
module.Register("prometheus", module.Creator{
JobConfigSchema: configSchema,
Defaults: module.Defaults{
UpdateEvery: 10,
},
Create: func() module.Module { return New() },
})
}
func New() *Prometheus {
return &Prometheus{
Config: Config{
HTTP: web.HTTP{
Client: web.Client{
Timeout: web.Duration(time.Second * 10),
},
},
MaxTS: 2000,
MaxTSPerMetric: 200,
},
charts: &module.Charts{},
cache: newCache(),
}
}
type Config struct {
web.HTTP `yaml:",inline" json:""`
UpdateEvery int `yaml:"update_every" json:"update_every"`
Name string `yaml:"name" json:"name"`
Application string `yaml:"app" json:"app"`
BearerTokenFile string `yaml:"bearer_token_file" json:"bearer_token_file"`
Selector selector.Expr `yaml:"selector" json:"selector"`
ExpectedPrefix string `yaml:"expected_prefix" json:"expected_prefix"`
MaxTS int `yaml:"max_time_series" json:"max_time_series"`
MaxTSPerMetric int `yaml:"max_time_series_per_metric" json:"max_time_series_per_metric"`
FallbackType struct {
Gauge []string `yaml:"gauge" json:"gauge"`
Counter []string `yaml:"counter" json:"counter"`
} `yaml:"fallback_type" json:"fallback_type"`
}
type Prometheus struct {
module.Base
Config `yaml:",inline" json:""`
charts *module.Charts
prom prometheus.Prometheus
cache *cache
fallbackType struct {
counter matcher.Matcher
gauge matcher.Matcher
}
}
func (p *Prometheus) Configuration() any {
return p.Config
}
func (p *Prometheus) Init() error {
if err := p.validateConfig(); err != nil {
p.Errorf("validating config: %v", err)
return err
}
prom, err := p.initPrometheusClient()
if err != nil {
p.Errorf("init prometheus client: %v", err)
return err
}
p.prom = prom
m, err := p.initFallbackTypeMatcher(p.FallbackType.Counter)
if err != nil {
p.Errorf("init counter fallback type matcher: %v", err)
return err
}
p.fallbackType.counter = m
m, err = p.initFallbackTypeMatcher(p.FallbackType.Gauge)
if err != nil {
p.Errorf("init counter fallback type matcher: %v", err)
return err
}
p.fallbackType.gauge = m
return nil
}
func (p *Prometheus) Check() error {
mx, err := p.collect()
if err != nil {
p.Error(err)
return err
}
if len(mx) == 0 {
return errors.New("no metrics collected")
}
return nil
}
func (p *Prometheus) Charts() *module.Charts {
return p.charts
}
func (p *Prometheus) Collect() map[string]int64 {
mx, err := p.collect()
if err != nil {
p.Error(err)
}
if len(mx) == 0 {
return nil
}
return mx
}
func (p *Prometheus) Cleanup() {
if p.prom != nil && p.prom.HTTPClient() != nil {
p.prom.HTTPClient().CloseIdleConnections()
}
}
|
