class Fluent::FileBuffer

def enqueue(chunk)
  path = chunk.path
  mp = path[@buffer_path_prefix.length..-(@buffer_path_suffix.length+1)]
  m = PATH_MATCH.match(mp)
  encoded_key = m ? m[1] : ""
  npath = make_path(encoded_key, "q")
  chunk.mv(npath)
end