class Fluent::Plugin::FileOutput

def write(chunk)
  path = extract_placeholders(@path_template, chunk)
  FileUtils.mkdir_p File.dirname(path), mode: @dir_perm
  writer = case
           when @compress_method.nil?
             method(:write_without_compression)
           when @compress_method == :gzip
             if @buffer.compress != :gzip || @recompress
               method(:write_gzip_with_compression)
             else
               method(:write_gzip_from_gzipped_chunk)
             end
           else
             raise "BUG: unknown compression method #{@compress_method}"
           end
  if @append
    writer.call(path, chunk)
  else
    find_filepath_available(path, with_lock: @need_lock) do |actual_path|
      writer.call(actual_path, chunk)
      path = actual_path
    end
  end
  @last_written_path = path
end