Examples of org.apache.blur.zookeeper.WatchChildren.watch()

Class org.apache.blur.zookeeper.WatchChildren

Examples of org.apache.blur.zookeeper.WatchChildren.watch()

org.apache.blur.zookeeper.WatchChildren.watch()

    }
  }


  private void watch(String cluster, String path, ConcurrentMap<String, WatchChildren> map) {
    WatchChildren watchForTables = new WatchChildren(_zookeeper, path);
    watchForTables.watch(new OnChange() {
      @Override
      public void action(List<String> children) {
        LOG.info("Layout change.");
        updateLayout();
      }

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  }


  private WatchChildren watchForShardServerChanges() {
    WatchChildren watchOnlineShards = new WatchChildren(_zookeeper,
        ZookeeperPathConstants.getOnlineShardsPath(_cluster));
    watchOnlineShards.watch(new OnChange() {
      private List<String> _prevOnlineShards = new ArrayList<String>();


      @Override
      public void action(List<String> onlineShards) {
        List<String> oldOnlineShards = _prevOnlineShards;

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    String path = ZookeeperPathConstants.getTablesPath(cluster);
    if (map.containsKey(cluster)) {
      return;
    }
    WatchChildren watchForTableLayoutChanges = new WatchChildren(_zookeeper, path);
    watchForTableLayoutChanges.watch(new OnChange() {
      @Override
      public void action(List<String> children) {
        LOG.info("Layout change for cluster [{0}].", cluster);
        updateLayout(cluster);
      }

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    String key = cluster + "|" + table;
    if (map.containsKey(key)) {
      return;
    }
    WatchChildren watchForTableLayoutChanges = new WatchChildren(_zookeeper, path);
    watchForTableLayoutChanges.watch(new OnChange() {
      @Override
      public void action(List<String> children) {
        LOG.info("Layout change for cluster [{0}] table [{1}].", cluster, table);
        updateLayout(cluster);
      }

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    }
  }


  private void watchForOnlineShardNodes(final String cluster) {
    WatchChildren watch = new WatchChildren(_zk, ZookeeperPathConstants.getOnlineShardsPath(cluster));
    watch.watch(new OnChange() {
      @Override
      public void action(List<String> children) {
        _onlineShardsNodes.put(cluster, children);
      }
    });

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      for (String cluster : clusters) {
        if (!_tableWatchers.containsKey(cluster)) {
          String tablesPath = ZookeeperPathConstants.getTablesPath(cluster);
          ZkUtils.waitUntilExists(_zk, tablesPath);
          WatchChildren clusterWatcher = new WatchChildren(_zk, tablesPath);
          clusterWatcher.watch(new Tables(cluster));
          _tableWatchers.put(cluster, clusterWatcher);
        }
      }


      List<String> clustersToCloseAndRemove = new ArrayList<String>(clusters);

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