WatchKeysUtil.java 文件源码

/**
 * Assemble watch keys for the given appId, cluster, namespaces, dataCenter combination
 *
 * @return a multimap with namespace as the key and watch keys as the value
 */
public Multimap<String, String> assembleAllWatchKeys(String appId, String clusterName,
                                                     Set<String> namespaces,
                                                     String dataCenter) {
  Multimap<String, String> watchedKeysMap =
      assembleWatchKeys(appId, clusterName, namespaces, dataCenter);

  //Every app has an 'application' namespace
  if (!(namespaces.size() == 1 && namespaces.contains(ConfigConsts.NAMESPACE_APPLICATION))) {
    Set<String> namespacesBelongToAppId = namespacesBelongToAppId(appId, namespaces);
    Set<String> publicNamespaces = Sets.difference(namespaces, namespacesBelongToAppId);

    //Listen on more namespaces if it's a public namespace
    if (!publicNamespaces.isEmpty()) {
      watchedKeysMap
          .putAll(findPublicConfigWatchKeys(appId, clusterName, publicNamespaces, dataCenter));
    }
  }

  return watchedKeysMap;
}