Rainbond/builder/sources/registry/errortransport.go

63 lines
1.8 KiB
Go

// RAINBOND, Application Management Platform
// Copyright (C) 2014-2017 Goodrain Co., Ltd.
// 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. For any non-GPL usage of Rainbond,
// one or multiple Commercial Licenses authorized by Goodrain Co., Ltd.
// must be obtained first.
// 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 registry
import (
"fmt"
"io/ioutil"
"net/http"
)
type HttpStatusError struct {
Response *http.Response
Body []byte // Copied from `Response.Body` to avoid problems with unclosed bodies later. Nobody calls `err.Response.Body.Close()`, ever.
}
func (err *HttpStatusError) Error() string {
return fmt.Sprintf("http: non-successful response (status=%v body=%q)", err.Response.StatusCode, err.Body)
}
var _ error = &HttpStatusError{}
type ErrorTransport struct {
Transport http.RoundTripper
}
func (t *ErrorTransport) RoundTrip(request *http.Request) (*http.Response, error) {
resp, err := t.Transport.RoundTrip(request)
if err != nil {
return resp, err
}
if resp.StatusCode >= 400 {
defer resp.Body.Close()
body, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, fmt.Errorf("http: failed to read response body (status=%v, err=%q)", resp.StatusCode, err)
}
return nil, &HttpStatusError{
Response: resp,
Body: body,
}
}
return resp, err
}