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auth.go
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auth.go
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// Copyright 2018 Drone.IO Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package transport
import "net/http"
// Authorization is an http.RoundTripper that makes HTTP
// requests, wrapping a base RoundTripper and adding an
// Authorization header with credentials
type Authorization struct {
Base http.RoundTripper
Scheme string
Credentials string
}
// RoundTrip adds the Authorization header to the request.
func (t *Authorization) RoundTrip(r *http.Request) (*http.Response, error) {
// Do not overwrite the authorization header if exists.
if r.Header.Get("Authorization") != "" {
return t.base().RoundTrip(r)
}
r2 := cloneRequest(r)
r2.Header.Set("Authorization", t.Scheme+" "+t.Credentials)
return t.base().RoundTrip(r2)
}
// base returns the base transport. If no base transport
// is configured, the default transport is returned.
func (t *Authorization) base() http.RoundTripper {
if t.Base != nil {
return t.Base
}
return http.DefaultTransport
}