blob: 693f190855c1e7775c4dee0bcf8aef9c5c08d039 [file] [log] [blame]
Holger Hildebrandtfa074992020-03-27 15:42:06 +00001// +build !windows
2
3package metrics
4
5import (
6 "fmt"
7 "log/syslog"
8 "time"
9)
10
11// Output each metric in the given registry to syslog periodically using
12// the given syslogger.
13func Syslog(r Registry, d time.Duration, w *syslog.Writer) {
14 for _ = range time.Tick(d) {
15 r.Each(func(name string, i interface{}) {
16 switch metric := i.(type) {
17 case Counter:
18 w.Info(fmt.Sprintf("counter %s: count: %d", name, metric.Count()))
19 case Gauge:
20 w.Info(fmt.Sprintf("gauge %s: value: %d", name, metric.Value()))
21 case GaugeFloat64:
22 w.Info(fmt.Sprintf("gauge %s: value: %f", name, metric.Value()))
23 case Healthcheck:
24 metric.Check()
25 w.Info(fmt.Sprintf("healthcheck %s: error: %v", name, metric.Error()))
26 case Histogram:
27 h := metric.Snapshot()
28 ps := h.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999})
29 w.Info(fmt.Sprintf(
30 "histogram %s: count: %d min: %d max: %d mean: %.2f stddev: %.2f median: %.2f 75%%: %.2f 95%%: %.2f 99%%: %.2f 99.9%%: %.2f",
31 name,
32 h.Count(),
33 h.Min(),
34 h.Max(),
35 h.Mean(),
36 h.StdDev(),
37 ps[0],
38 ps[1],
39 ps[2],
40 ps[3],
41 ps[4],
42 ))
43 case Meter:
44 m := metric.Snapshot()
45 w.Info(fmt.Sprintf(
46 "meter %s: count: %d 1-min: %.2f 5-min: %.2f 15-min: %.2f mean: %.2f",
47 name,
48 m.Count(),
49 m.Rate1(),
50 m.Rate5(),
51 m.Rate15(),
52 m.RateMean(),
53 ))
54 case Timer:
55 t := metric.Snapshot()
56 ps := t.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999})
57 w.Info(fmt.Sprintf(
58 "timer %s: count: %d min: %d max: %d mean: %.2f stddev: %.2f median: %.2f 75%%: %.2f 95%%: %.2f 99%%: %.2f 99.9%%: %.2f 1-min: %.2f 5-min: %.2f 15-min: %.2f mean-rate: %.2f",
59 name,
60 t.Count(),
61 t.Min(),
62 t.Max(),
63 t.Mean(),
64 t.StdDev(),
65 ps[0],
66 ps[1],
67 ps[2],
68 ps[3],
69 ps[4],
70 t.Rate1(),
71 t.Rate5(),
72 t.Rate15(),
73 t.RateMean(),
74 ))
75 }
76 })
77 }
78}