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|
package http
import (
"context"
"io"
"net/http"
"github.com/moby/buildkit/session"
"github.com/moby/buildkit/session/upload"
"github.com/pkg/errors"
)
func newTransport(rt http.RoundTripper, sm *session.Manager, g session.Group) http.RoundTripper {
return &sessionHandler{rt: rt, sm: sm, g: g}
}
type sessionHandler struct {
sm *session.Manager
rt http.RoundTripper
g session.Group
}
func (h *sessionHandler) RoundTrip(req *http.Request) (*http.Response, error) {
if req.URL.Host != "buildkit-session" {
return h.rt.RoundTrip(req)
}
if req.Method != "GET" {
return nil, errors.Errorf("invalid request")
}
var resp *http.Response
err := h.sm.Any(context.TODO(), h.g, func(ctx context.Context, _ string, caller session.Caller) error {
up, err := upload.New(context.TODO(), caller, req.URL)
if err != nil {
return err
}
pr, pw := io.Pipe()
go func() {
_, err := up.WriteTo(pw)
pw.CloseWithError(err)
}()
resp = &http.Response{
Status: "200 OK",
StatusCode: 200,
Body: pr,
ContentLength: -1,
}
return nil
})
if err != nil {
return nil, err
}
return resp, nil
}
|
