gistfile1.pp

class site_varnish::server(
  $type
) {
   $target = "/etc/varnish/$type.conf"
   concat{$target:
      owner => root,
      group => root,
      mode  => '0644',
   }
   Concat::Fragment <<| tag == 'varnish' |>>
}

class site_varnish::node(
  $type
) {
  @@concat::fragment{"varnish-$type-$fqdn":
      target => getvar("::site_varnish::server::$type::target"),
      content => template("site_varnish/nodes/$type.erb"),
      tag => 'varnish',
   }
}

node /varnish-server/ {
  class{'::site_varnish::server':
    type => 'pres',
  }
}

node /pres/ {
  class{'::site_varnish::node':
    type => 'pres',
  }
}