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46 lines
1006 B
46 lines
1006 B
package registry
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import (
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"fmt"
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"io/ioutil"
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"net/http"
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)
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type HTTPStatusError struct {
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Response *http.Response
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// Copied from `Response.Body` to avoid problems with unclosed bodies later.
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// Nobody calls `err.Response.Body.Close()`, ever.
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Body []byte
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}
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func (err *HTTPStatusError) Error() string {
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return fmt.Sprintf("http: non-successful response (status=%v body=%q)", err.Response.StatusCode, err.Body)
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}
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var _ error = &HTTPStatusError{}
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type ErrorTransport struct {
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Transport http.RoundTripper
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}
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func (t *ErrorTransport) RoundTrip(request *http.Request) (*http.Response, error) {
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resp, err := t.Transport.RoundTrip(request)
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if err != nil {
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return resp, err
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}
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if resp.StatusCode >= 400 {
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defer resp.Body.Close()
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body, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return nil, fmt.Errorf("http: failed to read response body (status=%v, err=%q)", resp.StatusCode, err)
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}
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return nil, &HTTPStatusError{
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Response: resp,
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Body: body,
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}
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}
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return resp, err
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}
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