65 lines
1.0 KiB
Go
65 lines
1.0 KiB
Go
package stats
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import (
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"fmt"
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"io"
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"os"
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"time"
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)
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type Logger struct {
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base
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out io.Writer
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interval time.Duration
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}
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func NewLogger(out io.Writer, interval time.Duration) *Logger {
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l := &Logger{
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out: out,
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interval: interval,
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}
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l.init()
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go l.printWithInterval()
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return l
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}
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func NewStdoutLogger(interval time.Duration) *Logger {
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return NewLogger(os.Stdout, interval)
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}
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func (l *Logger) Print() {
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for name, s := range l.stats {
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fmt.Fprintf(l.out, "%s statistics:\n"+
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"Processed: %d\n"+
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"Errors: %d\n"+
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"Min: %.8fms\n"+
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"Max: %.8fms\n"+
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"95%%: %.8fms\n"+
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"Mean: %.8fms\n"+
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"StdDev: %.8fms\n",
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name,
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s.time.Count(),
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s.errors.Count(),
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float64(s.time.Min())/1000000,
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float64(s.time.Max())/1000000,
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s.time.Percentile(0.95)/1000000,
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s.time.Mean()/1000000,
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s.time.StdDev()/1000000,
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)
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s.time.Clear()
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s.errors.Clear()
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}
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}
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func (l *Logger) printWithInterval() {
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if l.interval == 0 {
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return
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}
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for range time.NewTicker(l.interval).C {
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l.Print()
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}
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}
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