keepalived-formula/keepalived/templates/config.jinja

{%- set key = 0 -%}
{%- set value = 1 -%}
{%- set carryovers = ['real_server', 'virtual_server', 'virtual_server_group', 
      'vrrp_instance', 'vrrp_script', 'vrrp_sync_group'] -%}
{%- macro keepalived_config(data, carryover='', recurse=-1) -%}
  {%- set recurse = recurse + 1 -%}
  {%- if data is none -%}
    {{- '\n' -}}
  {%- elif data is string or data is number -%}
    {{- data }}{{ '\n' -}}
  {%- else -%}
    {%- if recurse > 0 -%}
      {{- '{\n' -}}
    {%- endif -%}
    {%- if data is mapping -%}
      {%- for item in data|dictsort -%}
        {%- if item[key] in carryovers -%}
          {{- keepalived_config(item[value], carryover=item[key]) -}}
        {%- else -%}
          {%- if carryover -%}
            {{- carryover }}{{ ' ' -}}
          {%- endif -%}
          {{- item[key] }} {{ keepalived_config(item[value], recurse=recurse) -}}
        {%- endif -%}
      {%- endfor -%}
    {%- else -%}
      {%- for item in data -%}
        {{- keepalived_config(item) -}}
      {%- endfor -%}
    {%- endif -%}
    {%- if recurse > 0 -%}
      {{- '}\n' -}}
    {%- endif -%}
  {%- endif -%}
{%- endmacro -%}