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progress_bar.go
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/
progress_bar.go
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package progressbar
import (
"io"
"time"
log "github.com/sirupsen/logrus"
pb "gopkg.in/cheggaaa/pb.v1"
)
type ProgressBar struct {
ready chan bool
bar *pb.ProgressBar
}
func NewProgressBar() *ProgressBar {
return &ProgressBar{
ready: make(chan bool),
}
}
func (p *ProgressBar) Complete() {
// Adding sleep to ensure UI has finished drawing
time.Sleep(time.Second)
p.bar.Finish()
}
func (p *ProgressBar) NewProgressBarWrapper(reader io.Reader, sizeOfFile int64) io.Reader {
log.WithField("file_size", sizeOfFile).Debug("new progress bar")
ready, ok := <-p.ready
if !ready || !ok {
return nil
}
log.Debug("progress bar ready")
p.bar = pb.New(int(sizeOfFile)).SetUnits(pb.U_BYTES)
p.bar.ShowTimeLeft = false
p.bar.Start()
return p.bar.NewProxyReader(reader)
}
func (p *ProgressBar) Ready() {
p.ready <- true
}