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limitedreader.go
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/
limitedreader.go
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// Copyright (C) 2014 The Syncthing Authors.
//
// This program is free software: you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation, either version 3 of the License, or (at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful, but WITHOUT
// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License along
// with this program. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"io"
"github.com/juju/ratelimit"
)
type limitedReader struct {
r io.Reader
bucket *ratelimit.Bucket
}
func (r *limitedReader) Read(buf []byte) (int, error) {
n, err := r.r.Read(buf)
if r.bucket != nil {
r.bucket.Wait(int64(n))
}
return n, err
}