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package meter
import (
"io"
"sync/atomic"
"time"
)
type writer struct {
*meter
w io.WriteCloser
}
func NewWriter(w io.WriteCloser, frequency time.Duration, fn UpdateCallback) io.WriteCloser {
if frequency == 0 {
return w
}
m := &writer{
w: w,
meter: newMeter(),
}
m.start(frequency, fn)
return m
}
func (m *writer) Write(p []byte) (int, error) {
n, err := m.w.Write(p)
atomic.AddUint64(&m.count, uint64(n))
return n, err
}
func (m *writer) Close() error {
m.doClose()
return m.w.Close()
}
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