[%
  # Return an array of hashes, each hash containing dispatcher_id and ips,
  # which is an array of ips, for a given cluster set type.
  #
  # @param argv.host  If the cluster_set type is 'central; we need to filter by pair
  # @param argv.role	The role of element we are interested in (rtp, lb)
  # @param argv.type  The type of the interfaces (rtp_int, sip_int...)
  # @return out		The array of hashes
-%]
[%
  IF !hosts.${argv.host}.defined;
    argv.host = 'self';
  END;
-%]
[%
  out = [];

  IF cluster_sets.type == 'central';
    set_hosts = [ argv.host, hosts.${argv.host}.peer ];
  ELSE;
    set_hosts = hosts.keys;
  END;


  FOREACH set IN cluster_sets.keys;
    NEXT IF (set == 'default_set' || set == 'type');
    theset = { dispatcher_id = cluster_sets.$set.dispatcher_id };
    theset.ips = [];

    FOREACH host IN set_hosts;
      NEXT UNLESS hosts.$host.role.grep('^' _ argv.role _ '$').size();
      FOREACH iface IN hosts.$host.interfaces;
        NEXT UNLESS hosts.$host.$iface.cluster_sets.grep('^' _ set _ '$').size();
        NEXT UNLESS hosts.$host.$iface.type.grep('^' _ argv.type _ '$').size();
        theset.ips.push(hosts.$host.$iface.ip) UNLESS theset.ips.defined(hosts.$host.$iface.ip);
      END;
    END;

    IF theset.ips.size();
      out.push(theset);
    END;

  END;
-%]