1 package main
2
3 import (
4 "flag"
5 "fmt"
6 "golang.conradwood.net/go-easyops/prometheus"
7 "golang.conradwood.net/go-easyops/server"
8 "golang.conradwood.net/go-easyops/utils"
9 "time"
10 )
11
12 type Timer struct {
13 start time.Time
14 txt string
15 }
16
17 func NewTimer(txt string) *Timer {
18 t := &Timer{txt: txt, start: time.Now()}
19 fmt.Printf("Starting \"%s\"...\n", txt)
20 return t
21 }
22 func (t *Timer) Finish(err error) {
23 utils.Bail(fmt.Sprintf("\"%s\" failed", t.txt), err)
24 d := time.Since(t.start)
25 fmt.Printf("Duration of \"%s\": %0.2f seconds\n", t.txt, d.Seconds())
26 }
27
28 func main() {
29 flag.Parse()
30 fmt.Printf("Prometheus go-easyops registry test code\n")
31 server.StartFakeService("foo.Foo")
32 i := 0
33 ctr := prometheus.NewCounterVec(
34 prometheus.CounterOpts{
35 Name: fmt.Sprintf("prometheus_test_metric_%d", i),
36 Help: fmt.Sprintf("desc_prometheus_test_metric_%d", i),
37 },
38 []string{"foo"})
39 prometheus.MustRegister(ctr)
40 prometheus.GetGatherer().Expiry = 0
41 t := NewTimer("Gather() - plain")
42 g, err := prometheus.GetRegistry().Gather()
43 t.Finish(err)
44 t = NewTimer("Gather() - arraylen")
45 fmt.Printf("Got %d metric familes\n", len(g))
46 t.Finish(nil)
47
48 t = NewTimer("Incrementing counters")
49 for i := 0; i < 30000; i++ {
50 l := prometheus.Labels{"foo": fmt.Sprintf("%d", i)}
51 ctr.With(l).Inc()
52 }
53 t.Finish(nil)
54
55 t = NewTimer("Gather() - with labels")
56 g, err = prometheus.GetRegistry().Gather()
57 t.Finish(err)
58 fmt.Printf("Got %d metric familes\n", len(g))
59 select {}
60 }
61
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