heat_template_version: 2015-04-30

description: Shows how to look up list/map values by group index

parameters:
  random_lengths:
    type: comma_delimited_list
    default: [4, 5, 6]

resources:
  random_group:
    type: OS::Heat::ResourceGroup
    properties:
      count: 3
      resource_def:
        type: random.yaml
        properties:
          # Note you have to pass the index and the entire list into the
          # nested template, resolving via %index% doesn't work directly
          # in the get_param here
          index: "%index%"
          lengths: {get_param: random_lengths}

outputs:
  all_values:
    value: {get_attr: [random_group, value]}