github.com/linapex/ethereum-dpos-chinese@v0.0.0-20190316121959-b78b3a4a1ece/metrics/syslog.go (about)

     1  
     2  //<developer>
     3  //    <name>linapex 曹一峰</name>
     4  //    <email>linapex@163.com</email>
     5  //    <wx>superexc</wx>
     6  //    <qqgroup>128148617</qqgroup>
     7  //    <url>https://jsq.ink</url>
     8  //    <role>pku engineer</role>
     9  //    <date>2019-03-16 12:09:42</date>
    10  //</624342651461701632>
    11  
    12  //+建设！窗户
    13  
    14  package metrics
    15  
    16  import (
    17  	"fmt"
    18  	"log/syslog"
    19  	"time"
    20  )
    21  
    22  //使用以下命令定期将给定注册表中的每个度量输出到syslog
    23  //给定的系统记录器。
    24  func Syslog(r Registry, d time.Duration, w *syslog.Writer) {
    25  	for range time.Tick(d) {
    26  		r.Each(func(name string, i interface{}) {
    27  			switch metric := i.(type) {
    28  			case Counter:
    29  				w.Info(fmt.Sprintf("counter %s: count: %d", name, metric.Count()))
    30  			case Gauge:
    31  				w.Info(fmt.Sprintf("gauge %s: value: %d", name, metric.Value()))
    32  			case GaugeFloat64:
    33  				w.Info(fmt.Sprintf("gauge %s: value: %f", name, metric.Value()))
    34  			case Healthcheck:
    35  				metric.Check()
    36  				w.Info(fmt.Sprintf("healthcheck %s: error: %v", name, metric.Error()))
    37  			case Histogram:
    38  				h := metric.Snapshot()
    39  				ps := h.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999})
    40  				w.Info(fmt.Sprintf(
    41  					"histogram %s: count: %d min: %d max: %d mean: %.2f stddev: %.2f median: %.2f 75%%: %.2f 95%%: %.2f 99%%: %.2f 99.9%%: %.2f",
    42  					name,
    43  					h.Count(),
    44  					h.Min(),
    45  					h.Max(),
    46  					h.Mean(),
    47  					h.StdDev(),
    48  					ps[0],
    49  					ps[1],
    50  					ps[2],
    51  					ps[3],
    52  					ps[4],
    53  				))
    54  			case Meter:
    55  				m := metric.Snapshot()
    56  				w.Info(fmt.Sprintf(
    57  					"meter %s: count: %d 1-min: %.2f 5-min: %.2f 15-min: %.2f mean: %.2f",
    58  					name,
    59  					m.Count(),
    60  					m.Rate1(),
    61  					m.Rate5(),
    62  					m.Rate15(),
    63  					m.RateMean(),
    64  				))
    65  			case Timer:
    66  				t := metric.Snapshot()
    67  				ps := t.Percentiles([]float64{0.5, 0.75, 0.95, 0.99, 0.999})
    68  				w.Info(fmt.Sprintf(
    69  					"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",
    70  					name,
    71  					t.Count(),
    72  					t.Min(),
    73  					t.Max(),
    74  					t.Mean(),
    75  					t.StdDev(),
    76  					ps[0],
    77  					ps[1],
    78  					ps[2],
    79  					ps[3],
    80  					ps[4],
    81  					t.Rate1(),
    82  					t.Rate5(),
    83  					t.Rate15(),
    84  					t.RateMean(),
    85  				))
    86  			}
    87  		})
    88  	}
    89  }
    90