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progress_reporter.go
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/
progress_reporter.go
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package sm_snapshots
import (
"io"
"time"
"github.com/dustin/go-humanize"
"github.com/iotaledger/hive.go/logger"
)
type progressReporter struct {
log *logger.Logger
header string
lastReport time.Time
expected uint64
total uint64
prevTotal uint64
}
var _ io.Writer = &progressReporter{}
const logStatusPeriodConst = 1 * time.Second
func NewProgressReporter(log *logger.Logger, header string, expected uint64) io.Writer {
return &progressReporter{
log: log,
header: header,
lastReport: time.Time{},
expected: expected,
total: 0,
prevTotal: 0,
}
}
func (pr *progressReporter) Write(p []byte) (int, error) {
pr.total += uint64(len(p))
now := time.Now()
timeDiff := now.Sub(pr.lastReport)
if timeDiff >= logStatusPeriodConst {
bps := uint64(float64(pr.total-pr.prevTotal) / timeDiff.Seconds())
pr.log.Debugf("%s: downloaded %s of %s (%s/s)", pr.header, humanize.Bytes(pr.total), humanize.Bytes(pr.expected), humanize.Bytes(bps))
pr.lastReport = now
pr.prevTotal = pr.total
}
return len(p), nil
}