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// Copyright (c) 2023, Sylabs Inc. All rights reserved.
// This software is licensed under a 3-clause BSD license. Please consult the
// LICENSE.md file distributed with the sources of this project regarding your
// rights to use or distribute this software.
package progress
import (
"io"
"net/http"
)
const contentSizeThreshold = 1024
type RoundTripper struct {
inner http.RoundTripper
pb *DownloadBar
}
func NewRoundTripper(inner http.RoundTripper, pb *DownloadBar) *RoundTripper {
if inner == nil {
inner = http.DefaultTransport
}
rt := RoundTripper{
inner: inner,
pb: pb,
}
return &rt
}
type rtReadCloser struct {
inner io.ReadCloser
pb *DownloadBar
}
func (r *rtReadCloser) Read(p []byte) (int, error) {
return r.inner.Read(p)
}
func (r *rtReadCloser) Close() error {
err := r.inner.Close()
if err == nil {
r.pb.Wait()
} else {
r.pb.Abort(false)
}
return err
}
func (t *RoundTripper) RoundTrip(req *http.Request) (*http.Response, error) {
if t.pb != nil && req.Body != nil && req.ContentLength >= contentSizeThreshold {
t.pb.Init(req.ContentLength)
req.Body = &rtReadCloser{
inner: t.pb.bar.ProxyReader(req.Body),
pb: t.pb,
}
}
resp, err := t.inner.RoundTrip(req)
if t.pb != nil && resp != nil && resp.Body != nil && resp.ContentLength >= contentSizeThreshold {
t.pb.Init(resp.ContentLength)
resp.Body = &rtReadCloser{
inner: t.pb.bar.ProxyReader(resp.Body),
pb: t.pb,
}
}
return resp, err
}
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