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

<%
require 'yaml'
%>

<%- if @pgbouncers.empty? -%>
init_config:

instances:
  - host: <%= @host %>
    port: <%= @port %>
    username: <%= @username %>
    password: <%= @password %>
<% if @tags and ! @tags.empty? -%>
    tags:
  <%- Array(@tags).each do |tag| -%>
    <%- if tag != '' -%>
      - <%= tag %>
    <%- end -%>
  <%- end -%>
<% end -%>
<%- else -%>
<%= {'init_config'=>nil, 'instances'=>@pgbouncers}.to_yaml %>
<%- end -%>