getAttributes method

AsyncReply<Structure> getAttributes(IResource resource, [ List<String>? attributes = null ])

Implementation

AsyncReply<Structure> getAttributes(IResource resource,
    [List<String>? attributes = null]) {
  var rt = new AsyncReply<Structure>();

  if (attributes == null) {
    (sendRequest(IIPPacketAction.GetAllAttributes)
          ..addUint32(resource.instance?.id as int))
        .done()
      ..then((ar) {
        if (ar != null) {
          var d = ar[0] as DC;
          Codec.parseStructure(d, 0, d.length, this)
            ..then((st) {
              resource.instance?.setAttributes(st);
              rt.trigger(st);
            })
            ..error((ex) => rt.triggerError(ex));
        } else {
          rt.triggerError(Exception("Null response"));
        }
      });
  } else {
    var attrs = DC.stringArrayToBytes(attributes);
    (sendRequest(IIPPacketAction.GetAttributes)
          ..addUint32(resource.instance?.id as int)
          ..addInt32(attrs.length)
          ..addDC(attrs))
        .done()
      ..then((ar) {
        if (ar != null) {
          var d = ar[0] as DC;
          Codec.parseStructure(d, 0, d.length, this)
            ..then((st) {
              resource.instance?.setAttributes(st);

              rt.trigger(st);
            })
            ..error((ex) => rt.triggerError(ex));
        } else {
          rt.triggerError(Exception("Null response"));
        }
      });
  }

  return rt;
}