func()

in internal/serving/disk/reader.go [276:308]

• 25 lines of code
• 5 McCabe index (conditional complexity)

func (reader *Reader) serveCustomFile(ctx context.Context, w http.ResponseWriter, r *http.Request, code int, root vfs.Root, origPath string) error {
	fullPath := reader.handleContentEncoding(ctx, w, r, root, origPath)

	// Open and serve content of file
	file, err := root.Open(ctx, fullPath)
	if err != nil {
		return err
	}
	defer file.Close()

	fi, err := root.Lstat(ctx, fullPath)
	if err != nil {
		return err
	}

	contentType, err := reader.detectContentType(ctx, root, origPath)
	if err != nil {
		return err
	}

	reader.fileSizeMetric.WithLabelValues(reader.vfs.Name()).Observe(float64(fi.Size()))

	w.Header().Set("Content-Type", contentType)
	w.Header().Set("Content-Length", strconv.FormatInt(fi.Size(), 10))
	w.WriteHeader(code)

	if r.Method != "HEAD" {
		_, err := io.CopyN(w, file, fi.Size())
		return err
	}

	return nil
}