Package org.apache.helix.store.zk

Examples of org.apache.helix.store.zk.ZNode

187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
      // TODO: optimize it by get stat from callback
      Stat stat = new Stat();
      Object readData =
          _accessor.get(dataPath, stat, AccessOption.THROW_EXCEPTION_IFNOTEXIST);

      ZNode znode = _cache.get(dataPath);
      if (znode != null)
      {
        Stat oldStat = znode.getStat();

        // System.out.println("handleDataChange: " + dataPath + ", data: " + data);
        // System.out.println("handleDataChange: " + dataPath + ", oldCzxid: " +
        // oldStat.getCzxid() + ", newCzxid: " + stat.getCzxid()
        // + ", oldVersion: " + oldStat.getVersion() + ", newVersion: " +
        // stat.getVersion());
        znode.setData(readData);
        znode.setStat(stat);

        // if create right after delete, and zkCallback comes after create
        // no DataDelete() will be fired, instead will fire 2 DataChange()
        // see ZkClient.fireDataChangedEvents()
        if (oldStat.getCzxid() != stat.getCzxid())
View Full Code Here
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
  {
    String parentPath = new File(path).getParent();
    String childName = new File(path).getName();
    addToParentChildSet(parentPath, childName);
   
    ZNode znode = _cache.get(path);
    if (znode == null)
    {
      _cache.put(path, new ZNode(path, data, stat));
    }
    else
    {
      znode.setData(data);
      znode.setStat(stat);
    }
  }
View Full Code Here
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
//        znode.setData(readData);
//        znode.setStat(stat);
//      }

      // recursively update children nodes if not exists
      ZNode znode = _cache.get(path);
      List<String> childNames = _accessor.getChildNames(path, 0);
      if (childNames != null && childNames.size() > 0)
      {
        for (String childName : childNames)
        {
          String childPath = path + "/" + childName;
          if (!znode.hasChild(childName))
          {
            znode.addChild(childName);
            updateRecursive(childPath);
          }
        }
      }
    }
View Full Code Here
712
713
714
715
716
717
718
719
720
721
722
723
724
    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
730
731
732
733
734
735
736
737
738
739
740
741
    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
756
757
758
759
760
761
762
763
764
765
766
767
    {
      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
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
    }

    // 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
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
    String serverPath = prependChroot(clientPath);

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

      if (znode != null) {
        // TODO: shall return a deep copy instead of reference
        record = ((T) znode.getData());
        if (stat != null) {
          DataTree.copyStat(znode.getStat(), stat);
        }
        return record;

      } else {
        // if cache miss, fall back to zk and update cache
View Full Code Here
383
384
385
386
387
388
389
390
391
392
393
394
395
396
    String serverPath = prependChroot(clientPath);

    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
        try {
          cache.lockWrite();
View Full Code Here
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
    Cache<T> cache = getCache(serverPaths);
    if (cache != null) {
      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
TOP

Related Classes of org.apache.helix.store.zk.ZNode

  • org.apache.helix.manager.zk.Cache
  • org.apache.helix.manager.zk.WriteThroughCache
  • org.apache.helix.manager.zk.ZkCacheBaseDataAccessor
  • org.apache.helix.manager.zk.ZkCallbackCache
  • org.apache.helix.TestHelper
    • 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.