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Serve blobs when a storage driver supports redirects but are disabled

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Fixes issue where an error was returned instead of serving the blob

Signed-off-by: Brian Bland <brian.bland@docker.com>
This commit is contained in:
Brian Bland 2015-12-28 11:04:58 -08:00
parent 13b56c9d20
commit cf4fdc1be0
1 changed files with 33 additions and 33 deletions
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66
docs/storage/blobserver.go
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@ -34,45 +34,45 @@ func (bs *blobServer) ServeBlob(ctx context.Context, w http.ResponseWriter, r *h
return err
}
redirectURL, err := bs.driver.URLFor(ctx, path, map[string]interface{}{"method": r.Method})
switch err.(type) {
case nil:
if bs.redirect {
if bs.redirect {
redirectURL, err := bs.driver.URLFor(ctx, path, map[string]interface{}{"method": r.Method})
switch err.(type) {
case nil:
// Redirect to storage URL.
http.Redirect(w, r, redirectURL, http.StatusTemporaryRedirect)
return err
}
case driver.ErrUnsupportedMethod:
// Fallback to serving the content directly.
br, err := newFileReader(ctx, bs.driver, path, desc.Size)
if err != nil {
case driver.ErrUnsupportedMethod:
// Fallback to serving the content directly.
default:
// Some unexpected error.
return err
}
defer br.Close()
w.Header().Set("ETag", fmt.Sprintf(`"%s"`, desc.Digest)) // If-None-Match handled by ServeContent
w.Header().Set("Cache-Control", fmt.Sprintf("max-age=%.f", blobCacheControlMaxAge.Seconds()))
if w.Header().Get("Docker-Content-Digest") == "" {
w.Header().Set("Docker-Content-Digest", desc.Digest.String())
}
if w.Header().Get("Content-Type") == "" {
// Set the content type if not already set.
w.Header().Set("Content-Type", desc.MediaType)
}
if w.Header().Get("Content-Length") == "" {
// Set the content length if not already set.
w.Header().Set("Content-Length", fmt.Sprint(desc.Size))
}
http.ServeContent(w, r, desc.Digest.String(), time.Time{}, br)
return nil
}
// Some unexpected error.
return err
br, err := newFileReader(ctx, bs.driver, path, desc.Size)
if err != nil {
return err
}
defer br.Close()
w.Header().Set("ETag", fmt.Sprintf(`"%s"`, desc.Digest)) // If-None-Match handled by ServeContent
w.Header().Set("Cache-Control", fmt.Sprintf("max-age=%.f", blobCacheControlMaxAge.Seconds()))
if w.Header().Get("Docker-Content-Digest") == "" {
w.Header().Set("Docker-Content-Digest", desc.Digest.String())
}
if w.Header().Get("Content-Type") == "" {
// Set the content type if not already set.
w.Header().Set("Content-Type", desc.MediaType)
}
if w.Header().Get("Content-Length") == "" {
// Set the content length if not already set.
w.Header().Set("Content-Length", fmt.Sprint(desc.Size))
}
http.ServeContent(w, r, desc.Digest.String(), time.Time{}, br)
return nil
}