-
Notifications
You must be signed in to change notification settings - Fork 0
/
main.go
65 lines (52 loc) · 1.55 KB
/
main.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
package main
import (
"context"
"fmt"
"github.com/prometheus/client_golang/prometheus"
"github.com/prometheus/client_golang/prometheus/promhttp"
"github.com/rluisr/trex_exporter/trex"
"log"
"net/http"
"net/url"
)
var version string
func main() {
config, err := NewConfig()
if err != nil {
panic(err)
}
addr := fmt.Sprintf("0.0.0.0:%d", config.ListenPort)
log.Printf("Start exporter on %s/metrics", addr)
http.HandleFunc("/", top)
http.HandleFunc("/metrics", func(w http.ResponseWriter, r *http.Request) {
probeHandler(w, r)
})
log.Fatal(http.ListenAndServe(addr, nil))
}
func probeHandler(w http.ResponseWriter, r *http.Request) {
params := r.URL.Query()
// target: http://hoge?worker=hoge
// Need parse target for getting scheme://host and worker name
target := params.Get("target")
if target == "" {
http.Error(w, "Target parameter is missing", http.StatusBadRequest)
return
}
targetURL, err := url.Parse(target)
if err != nil {
http.Error(w, fmt.Sprintf("failed to parse target url: %s", targetURL), http.StatusBadRequest)
}
q := targetURL.Query()
target = fmt.Sprintf("%s://%s:%s", targetURL.Scheme, targetURL.Hostname(), targetURL.Port())
worker := q.Get("worker")
if worker == "" {
http.Error(w, "Worker parameter is missing", http.StatusBadRequest)
}
registry := prometheus.NewRegistry()
_ = trex.Probe(context.TODO(), target, worker, registry)
h := promhttp.HandlerFor(registry, promhttp.HandlerOpts{})
h.ServeHTTP(w, r)
}
func top(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "version: %s", version)
}