@Override
    public void fetchData(final String discoveryHandlerId) {
        DiscoveryHandlerDO discoveryHandlerDO = discoveryHandlerMapper.selectById(discoveryHandlerId);
        DiscoveryDO discoveryDO = discoveryMapper.selectById(discoveryHandlerDO.getDiscoveryId());
        ProxySelectorDO proxySelectorDO = proxySelectorMapper.selectByHandlerId(discoveryHandlerId);
        DiscoveryHandlerDTO discoveryHandlerDTO = DiscoveryTransfer.INSTANCE.mapToDTO(discoveryHandlerDO);
        if (Objects.nonNull(proxySelectorDO)) {
            discoveryProcessorHolder.chooseProcessor(discoveryDO.getType()).fetchAll(discoveryHandlerDTO, DiscoveryTransfer.INSTANCE.mapToDTO(proxySelectorDO));
        }
        SelectorDO selectorDO = selectorMapper.selectByDiscoveryHandlerId(discoveryHandlerId);
        if (Objects.nonNull(selectorDO)) {
            ProxySelectorDTO proxySelectorDTO = new ProxySelectorDTO();
            proxySelectorDTO.setPluginName(discoveryDO.getPluginName());
            proxySelectorDTO.setName(selectorDO.getName());
            proxySelectorDTO.setId(selectorDO.getId());
            proxySelectorDTO.setNamespaceId(selectorDO.getNamespaceId());
            discoveryProcessorHolder.chooseProcessor(discoveryDO.getType()).fetchAll(discoveryHandlerDTO, proxySelectorDTO);
        }
    }
update.

@param proxySelectorAddDTO proxySelectorAddDTO
@return the string
shenyu-admin/src/main/java/org/apache/shenyu/admin/service/impl/ProxySelectorServiceImpl.java