templates/agent-conf.d/postfix.yaml.erb

#
# MANAGED BY PUPPET
#

init_config:

instances:
<%- (Array(@_instances)).each do |instance| -%>
  - directory: <%= instance['directory'] %>
<% if instance['queues'] and ! instance['queues'].empty? -%>
    queues:
  <%- Array(instance['queues']).each do |queue| -%>
    <%- if queue != '' -%>
      - <%= queue %>
    <%- end -%>
  <%- end -%>
<%- end -%>
<% if instance['tags'] and ! instance['tags'].empty? -%>
    tags:
  <%- Array(instance['tags']).each do |tag| -%>
    <%- if tag != '' -%>
      - <%= tag %>
    <%- end -%>
  <%- end -%>
<% end -%>
<% end -%>