execute method

FutureOr<Object?> execute(Object? data, RequestContext request, String id, { ValueDecoder<Object?>? generatedDecoder, })

Decodes data and invokes handler.

Malformed wire values fail as a controlled HTTP 400 before handler starts. Errors thrown by handler retain their original semantics.

Implementation

FutureOr<Object?> execute(
  Object? data,
  RequestContext request,
  String id, {
  ValueDecoder<Object?>? generatedDecoder,
}) {
  late final I input;
  try {
    input = I == NoServerInput && data == null
        ? const NoServerInput() as I
        : generatedDecoder != null
        ? generatedDecoder(data) as I
        : decodeInput?.call(data) ?? data as I;
  } on FormatException {
    throw const HttpError(400, 'Invalid server function payload.');
  } on TypeError {
    throw const HttpError(400, 'Invalid server function payload.');
  } on RangeError {
    throw const HttpError(400, 'Invalid server function payload.');
  } on ArgumentError {
    throw const HttpError(400, 'Invalid server function payload.');
  }
  return handler(
    ServerFunctionContext<I>(data: input, request: request, id: id),
  );
}