class Lumberjack::Device::Writer

def write(entry)
  string = (entry.is_a?(LogEntry) ? @template.call(entry) : entry)
  return if string.nil?
  string = string.strip
  return if string.length == 0
  unless string.encoding == Encoding::UTF_8
    string = string.encode("UTF-8", invalid: :replace, undef: :replace)
  end
  if buffer_size > 1
    @lock.synchronize do
      @buffer << string
    end
    flush if @buffer.size >= buffer_size
  else
    flush if respond_to?(:before_flush, true)
    write_to_stream(string)
  end
end