protected void cacheDiscoveryUpstreamData(final DiscoverySyncData upstreamDataList) {
        Optional.ofNullable(discoveryUpstreamDataSubscribers)
                .ifPresent(data -> discoveryUpstreamDataSubscribers.forEach(e -> e.onSubscribe(upstreamDataList)));
    }
event.

@param namespaceId namespaceId
@param updatePath updatePath
@param updateData updateData
@param registerPath registerPath
@param eventType eventType
shenyu-sync-data-center/shenyu-sync-data-api/src/main/java/org/apache/shenyu/sync/data/core/AbstractPathDataSyncService.java