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stopwatch.go
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stopwatch.go
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package timeutils
import (
"fmt"
"sort"
"strings"
"sync"
"time"
"github.com/golangci/golangci-lint/pkg/logutils"
)
type Stopwatch struct {
name string
startedAt time.Time
stages map[string]time.Duration
log logutils.Log
sync.Mutex
}
func NewStopwatch(name string, log logutils.Log) *Stopwatch {
return &Stopwatch{
name: name,
startedAt: time.Now(),
stages: map[string]time.Duration{},
log: log,
}
}
type stageDuration struct {
name string
d time.Duration
}
func (s *Stopwatch) sprintStages() string {
stageDurations := []stageDuration{}
for n, d := range s.stages {
stageDurations = append(stageDurations, stageDuration{
name: n,
d: d,
})
}
sort.Slice(stageDurations, func(i, j int) bool {
return stageDurations[i].d > stageDurations[j].d
})
stagesStrings := []string{}
for _, s := range stageDurations {
stagesStrings = append(stagesStrings, fmt.Sprintf("%s: %s", s.name, s.d))
}
return fmt.Sprintf("stages: %s", strings.Join(stagesStrings, ", "))
}
func (s *Stopwatch) Print() {
p := fmt.Sprintf("%s took %s", s.name, time.Since(s.startedAt))
if len(s.stages) == 0 {
s.log.Infof("%s", p)
return
}
s.log.Infof("%s with %s", p, s.sprintStages())
}
func (s *Stopwatch) PrintStages() {
var stagesDuration time.Duration
for _, s := range s.stages {
stagesDuration += s
}
s.log.Infof("%s took %s with %s", s.name, stagesDuration, s.sprintStages())
}
func (s *Stopwatch) TrackStage(name string, f func()) {
startedAt := time.Now()
f()
s.Lock()
s.stages[name] += time.Since(startedAt)
s.Unlock()
}