forked from prometheus-community/json_exporter
-
Notifications
You must be signed in to change notification settings - Fork 0
/
init.go
81 lines (70 loc) · 1.82 KB
/
init.go
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
package jsonexporter
import (
"fmt"
"github.com/prometheus/client_golang/prometheus"
"github.com/urfave/cli"
"github.com/yjbdsky/prometheus-exporter-harness/harness"
)
type ScrapeType struct {
Configure func(*Config, *harness.MetricRegistry)
NewScraper func(*Config) (JsonScraper, error)
}
var ScrapeTypes = map[string]*ScrapeType{
"object": {
Configure: func(config *Config, reg *harness.MetricRegistry) {
for subName := range config.Values {
name := harness.MakeMetricName(config.Name, subName)
reg.Register(
name,
prometheus.NewGaugeVec(prometheus.GaugeOpts{
Name: name,
Help: config.Help + " - " + subName,
}, config.labelNames()),
)
}
},
NewScraper: NewObjectScraper,
},
"value": {
Configure: func(config *Config, reg *harness.MetricRegistry) {
reg.Register(
config.Name,
prometheus.NewGaugeVec(prometheus.GaugeOpts{
Name: config.Name,
Help: config.Help,
}, config.labelNames()),
)
},
NewScraper: NewValueScraper,
},
}
var DefaultScrapeType = "value"
func Init(c *cli.Context, reg *harness.MetricRegistry) (harness.Collector, error) {
args := c.Args()
if len(args) < 2 {
cli.ShowAppHelp(c)
return nil, fmt.Errorf("not enough arguments")
}
var (
endpoint = args[0]
configPath = args[1]
)
configs, err := loadConfig(configPath)
if err != nil {
return nil, err
}
scrapers := make([]JsonScraper, len(configs))
for i, config := range configs {
tpe := ScrapeTypes[config.Type]
if tpe == nil {
return nil, fmt.Errorf("unknown scrape type;type:<%s>", config.Type)
}
tpe.Configure(config, reg)
scraper, err := tpe.NewScraper(config)
if err != nil {
return nil, fmt.Errorf("failed to create scraper;name:<%s>,err:<%s>", config.Name, err)
}
scrapers[i] = scraper
}
return NewCollector(endpoint, scrapers), nil
}