class nova::cell_v2::map_instances (
  $cell_uuid    = undef,
  $cell_name    = undef,
  $extra_params = '',
) {

  include ::nova::deps
  include ::nova::params

  if (!$cell_uuid and !$cell_name) {
    fail('Either cell_uuid or cell_name must be provided')
  }

  if ($cell_uuid) {
    $cell_uuid_real = $cell_uuid
  } else {
    # NOTE(aschultz): This is what breaks if you have multiple cells with the
    # same name. So that's why using cell_uuid is better.
    $cell_uuid_real = "$(nova-manage cell_v2 list_cells | sed -e '1,3d' -e '\$d' | awk -F ' *| *' '\$2 == \"${cell_name}\" {print \$4}')"
  }

  exec { 'nova-cell_v2-map_instances':
    path        => ['/bin', '/usr/bin'],
    command     => "nova-manage ${extra_params} cell_v2 map_instances --cell_uuid=${cell_uuid_real}",
    user        => $::nova::params::nova_user,
    refreshonly => true,
  }
}