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package main
import (
"crypto/rand"
"io"
"time"
"github.com/vbauerster/mpb/v8"
"github.com/vbauerster/mpb/v8/decor"
)
func main() {
var total int64 = 64 * 1024 * 1024
r, w := io.Pipe()
go func() {
for i := 0; i < 1024; i++ {
_, _ = io.Copy(w, io.LimitReader(rand.Reader, 64*1024))
time.Sleep(time.Second / 10)
}
w.Close()
}()
p := mpb.New(
mpb.WithWidth(60),
mpb.WithRefreshRate(180*time.Millisecond),
)
bar := p.New(total,
mpb.BarStyle().Rbound("|"),
mpb.PrependDecorators(
decor.Counters(decor.SizeB1024(0), "% .2f / % .2f"),
),
mpb.AppendDecorators(
decor.EwmaETA(decor.ET_STYLE_GO, 30),
decor.Name(" ] "),
decor.EwmaSpeed(decor.SizeB1024(0), "% .2f", 30),
),
)
// create proxy reader
proxyReader := bar.ProxyReader(r)
defer proxyReader.Close()
// copy from proxyReader, ignoring errors
_, _ = io.Copy(io.Discard, proxyReader)
p.Wait()
}
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