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fix: request retry with error

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this fixes a subtle bug with makeRequestWithRetry where an HTTP status
error on a retried request will potentially not return the right err
This commit is contained in:
Michael Yang 2024-01-12 13:32:24 -08:00
parent 3773fb6465
commit cf29bd2d72
1 changed files with 31 additions and 34 deletions
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13
server/images.go
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@ -1132,6 +1132,7 @@ func GetSHA256Digest(r io.Reader) (string, int64) {
var errUnauthorized = fmt.Errorf("unauthorized") var errUnauthorized = fmt.Errorf("unauthorized")
func makeRequestWithRetry(ctx context.Context, method string, requestURL *url.URL, headers http.Header, body io.ReadSeeker, regOpts *RegistryOptions) (*http.Response, error) { func makeRequestWithRetry(ctx context.Context, method string, requestURL *url.URL, headers http.Header, body io.ReadSeeker, regOpts *RegistryOptions) (*http.Response, error) {
for i := 0; i < 2; i++ {
resp, err := makeRequest(ctx, method, requestURL, headers, body, regOpts) resp, err := makeRequest(ctx, method, requestURL, headers, body, regOpts)
if err != nil { if err != nil {
if !errors.Is(err, context.Canceled) { if !errors.Is(err, context.Canceled) {
@ -1157,13 +1158,6 @@ func makeRequestWithRetry(ctx context.Context, method string, requestURL *url.UR
return nil, err return nil, err
} }
} }
resp, err := makeRequest(ctx, method, requestURL, headers, body, regOpts)
if resp.StatusCode == http.StatusUnauthorized {
return nil, errUnauthorized
}
return resp, err
case resp.StatusCode == http.StatusNotFound: case resp.StatusCode == http.StatusNotFound:
return nil, os.ErrNotExist return nil, os.ErrNotExist
case resp.StatusCode >= http.StatusBadRequest: case resp.StatusCode >= http.StatusBadRequest:
@ -1172,9 +1166,12 @@ func makeRequestWithRetry(ctx context.Context, method string, requestURL *url.UR
return nil, fmt.Errorf("%d: %s", resp.StatusCode, err) return nil, fmt.Errorf("%d: %s", resp.StatusCode, err)
} }
return nil, fmt.Errorf("%d: %s", resp.StatusCode, responseBody) return nil, fmt.Errorf("%d: %s", resp.StatusCode, responseBody)
default:
return resp, nil
}
} }
return resp, nil return nil, errUnauthorized
} }
func makeRequest(ctx context.Context, method string, requestURL *url.URL, headers http.Header, body io.Reader, regOpts *RegistryOptions) (*http.Response, error) { func makeRequest(ctx context.Context, method string, requestURL *url.URL, headers http.Header, body io.Reader, regOpts *RegistryOptions) (*http.Response, error) {