syncthing/lib/connections/limitedreader.go

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2014-11-16 20:13:20 +00:00
// Copyright (C) 2014 The Syncthing Authors.
2014-09-29 19:43:32 +00:00
//
2015-03-07 20:36:35 +00:00
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
// You can obtain one at http://mozilla.org/MPL/2.0/.
package connections
import (
"io"
"github.com/juju/ratelimit"
)
type LimitedReader struct {
reader io.Reader
bucket *ratelimit.Bucket
}
func NewReadLimiter(r io.Reader, b *ratelimit.Bucket) *LimitedReader {
return &LimitedReader{
reader: r,
bucket: b,
}
}
func (r *LimitedReader) Read(buf []byte) (int, error) {
n, err := r.reader.Read(buf)
if r.bucket != nil {
r.bucket.Wait(int64(n))
}
return n, err
}