class DataStore implements DataCacheProvider, RolesProvider {

    void addHostEntries(Map<String, Set<String>> hostMap) {

        if (hostMap == null || hostMap.isEmpty()) {
            return;
        }
        
        for (Map.Entry<String, Set<String>> entry : hostMap.entrySet()) {
            List<String> services = hostCache.computeIfAbsent(entry.getKey(), k -> new ArrayList<>());
            services.addAll(entry.getValue());
        }
    }

    public  DataStore(ChangeLogStore clogStore, CloudStore cloudStore);

}