Method: DTAS::StateFile#dump

Defined in:
lib/dtas/state_file.rb

#dump(obj, force_fsync = false) ⇒ Object 



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# File 'lib/dtas/state_file.rb', line 20

def dump(obj, force_fsync = false)
  yaml = obj.to_hsh.to_yaml.b

  # do not replace existing state file if there are no changes
  # this will be racy if we ever do async dumps or shared state
  # files, but we don't do that...
  return if File.readable?(@path) && IO.binread(@path) == yaml

  dir = File.dirname(@path)
  Tempfile.open(%w(player.state .tmp), dir) do |tmp|
    tmp.binmode
    tmp.write(yaml)
    tmp.flush
    tmp.fsync if @do_fsync || force_fsync
    File.rename(tmp.path, @path)
  end
end