protected DiscoverySyncData fetch(final String selectorId, final String selectorName, final String pluginName, final String namespaceId) {
        List<DiscoveryUpstreamData> discoveryUpstreamDataList = discoveryUpstreamService.findBySelectorId(selectorId);
        DiscoverySyncData discoverySyncData = new DiscoverySyncData();
        discoverySyncData.setUpstreamDataList(discoveryUpstreamDataList);
        discoverySyncData.setPluginName(pluginName);
        discoverySyncData.setSelectorId(selectorId);
        discoverySyncData.setSelectorName(selectorName);
        discoverySyncData.setNamespaceId(namespaceId);
        return discoverySyncData;
    }
Register uri string.

@param selectorName the selector name
@param uriList      the uri list
@param namespaceId  the namespace id
@return the string
shenyu-admin/src/main/java/org/apache/shenyu/admin/service/register/AbstractShenyuClientRegisterServiceImpl.java