Package com.linkedin.helix.store.zk

Examples of com.linkedin.helix.store.zk.ZNode


    Cache<T> cache = getCache(serverPath);
    if (cache != null)
    {
      Stat stat = new Stat();
      ZNode znode = cache.get(serverPath);

      if (znode != null)
      {
        return znode.getStat();

      }
      else
      {
        // if cache miss, fall back to zk and update cache
View Full Code Here


      try
      {
        cache.lockRead();
        for (int i = 0; i < size; i++)
        {
          ZNode zNode = cache.get(serverPaths.get(i));
          if (zNode != null)
          {
            // TODO: shall return a deep copy instead of reference
            records.set(i, (T) zNode.getData());
            readStats.set(i, zNode.getStat());
          }
          else
          {
            needRead = true;
            needReads[i] = true;
View Full Code Here

    Cache<T> cache = getCache(serverParentPath);
    if (cache != null)
    {
      // System.out.println("zk-cache");
      ZNode znode = cache.get(serverParentPath);

      if (znode != null && znode.getChildSet() != Collections.<String> emptySet())
      {
        // System.out.println("zk-cache-hit: " + parentPath);
        List<String> childNames = new ArrayList<String>(znode.getChildSet());
        Collections.sort(childNames);
        return childNames;
      }
      else
      {
View Full Code Here

    TreeMap<String, ZNode> map = new TreeMap<String, ZNode>();
    map.putAll(cache);

    for (String key : map.keySet())
    {
      ZNode node = map.get(key);
      TreeSet<String> childSet = new TreeSet<String>();
      childSet.addAll(node.getChildSet());
      System.out.print(key + "=" + node.getData() + ", " + childSet + ", "
          + (node.getStat() == null ? "null\n" : node.getStat()));
    }
    System.out.println("END:Print cache");
  }
View Full Code Here

    try
    {
      Stat stat = new Stat();
      ZNRecord record = zkclient.readData(path, stat);
      List<String> childNames = zkclient.getChildren(path);
      ZNode node = new ZNode(path, record, stat);
      node.addChildren(childNames);
      map.put(path, node);

      for (String childName : childNames)
      {
        String childPath = path + "/" + childName;
View Full Code Here

    {
      Stat stat = new Stat();
      ZNRecord record = zkAccessor.get(path, stat, 0);
      List<String> childNames = zkAccessor.getChildNames(path, 0);
      // System.out.println("childNames: " + childNames);
      ZNode node = new ZNode(path, record, stat);
      node.addChildren(childNames);
      map.put(path, node);

      if (childNames != null && !childNames.isEmpty())
      {
        for (String childName : childNames)
View Full Code Here

    }

    // everything in cache is also in map
    for (String path : cache.keySet())
    {
      ZNode cacheNode = cache.get(path);
      ZNode zkNode = zkMap.get(path);

      if (zkNode == null)
      {
        // in cache but not on zk
        System.err.println("path: " + path + " in cache but not on zk: inCacheNode: "
            + cacheNode);
        return false;
      }

      if ((zkNode.getData() == null && cacheNode.getData() != null)
          || (zkNode.getData() != null && cacheNode.getData() == null)
          || (zkNode.getData() != null && cacheNode.getData() != null && !zkNode.getData()
                                                                                .equals(cacheNode.getData())))
      {
        // data not equal
        System.err.println("data mismatch on path: " + path + ", inCache: "
            + cacheNode.getData() + ", onZk: " + zkNode.getData());
        return false;
      }

      if ((zkNode.getChildSet() == null && cacheNode.getChildSet() != null)
          || (zkNode.getChildSet() != null && cacheNode.getChildSet() == null)
          || (zkNode.getChildSet() != null && cacheNode.getChildSet() != null && !zkNode.getChildSet()
                                                                                        .equals(cacheNode.getChildSet())))
      {
        // childSet not equal
        System.err.println("childSet mismatch on path: " + path + ", inCache: "
            + cacheNode.getChildSet() + ", onZk: " + zkNode.getChildSet());
        return false;
      }

      if (needVerifyStat && pathsExcludeForStat != null
          && !pathsExcludeForStat.contains(path))
      {
        if (cacheNode.getStat() == null || !zkNode.getStat().equals(cacheNode.getStat()))
        {
          // stat not equal
          System.err.println("Stat mismatch on path: " + path + ", inCache: "
              + cacheNode.getStat() + ", onZk: " + zkNode.getStat());
          return false;
        }
      }
    }
View Full Code Here

TOP

Related Classes of com.linkedin.helix.store.zk.ZNode

Copyright © 2018 www.massapicom. All rights reserved.
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.