public String uploadPhoto(String image) {
        PhotoUploadProcessor photoUploadProcessor = getPhotoUploadProcessor();
        photoUploadProcessor.upload(image, photoId -> {
            Log.d("0. MonitoringPresenter", String.format("photo id => %s", photoId));
        });
        return photoId;
    }


public class PhotoUploadProcessor {

    public interface OnUploadCallback {
        void onUploaded(String photoId);
    }

    private ImageService imageService;

    public PhotoUploadProcessor(ImageService imageService) {
        this.imageService = imageService;
    }

    public void upload(String image, final PhotoUploadProcessor.OnUploadCallback callback) {
        File file = new File(image);
        RequestBody requestFile = RequestBody.create(MediaType.parse(image), file);
        MultipartBody.Part multipart = MultipartBody.Part
                .createFormData("photo", file.getName(), requestFile);

        imageService.uploadPhoto(multipart, new Callback<UploadPhoto>() {
            @Override
            public void onSuccess(UploadPhoto result) {
                callback.onUploaded(result.getPhoto().getId().toString());
            }

            @Override
            public void onFailure(@NonNull Call<ApiResponse<UploadPhoto>> call, @NonNull Throwable t) {
                Log.d("PhotoUploadProcessor", String.format("onFailure call => %s, Throwable => %s", call.request(), t.getMessage()));
                super.onFailure(call, t);
            }

            @Override
            public void onFailure(int statusCode, List<ApiError> errors) {
                Log.d("PhotoUploadProcessor", String.format("statusCode call => %s, errors => %s", statusCode, errors));
                super.onFailure(statusCode, errors);
            }
        });
    }
}