26 lines
488 B
Go
26 lines
488 B
Go
package rateio
|
|
|
|
import "io"
|
|
|
|
type reader struct {
|
|
io.Reader
|
|
Limiter
|
|
}
|
|
|
|
// Read reads data into p.
|
|
// Returns ErrRateExceeded error if our specified read is exceeded.
|
|
func (r *reader) Read(p []byte) (n int, err error) {
|
|
n, err = r.Reader.Read(p)
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
err = r.Limiter.Count(n)
|
|
return
|
|
}
|
|
|
|
// NewReader proxies an io.Reader but keeps track of bytes read based on our Limiter.
|
|
func NewReader(r io.Reader, limiter Limiter) io.Reader {
|
|
return &reader{r, limiter}
|
|
}
|