class Fluent::Plugin::LocalStorage

def save
  return if @on_memory
  tmp_path = @path + '.tmp'
  begin
    json_string = Yajl::Encoder.encode(@store, pretty: @pretty_print)
    open(tmp_path, 'w:utf-8', @mode) { |io| io.write json_string; io.fsync }
    File.rename(tmp_path, @path)
  rescue => e
    log.error "failed to save data for plugin storage to file", path: @path, tmp: tmp_path, error: e
  end
end