onError method

@override void onError(DioException err, ErrorInterceptorHandler handler)

Called when an exception was occurred during the request.

Implementation

@override
void onError(DioException err, ErrorInterceptorHandler handler) {
  assert(() {
    final parentId = err.requestOptions.extra['_trinity_event_id'] as String?;
    TrinityEventBus.instance.emit(CausalEvent(
      parentId: parentId,
      type: CausalEventType.networkEvent,
      description: 'HTTP ERROR ${err.requestOptions.method} '
          '${err.requestOptions.uri.path}',
      metadata: {
        'method': err.requestOptions.method,
        'url': err.requestOptions.uri.toString(),
        'path': err.requestOptions.uri.path,
        'phase': 'error',
        'error_type': err.type.name,
        'error_message': err.message ?? 'unknown',
        'status_code': err.response?.statusCode ?? 0,
      },
    ));
    return true;
  }());
  handler.next(err);
}