Package org.apache.accumulo.fate.zookeeper

Examples of org.apache.accumulo.fate.zookeeper.ZooCache

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    if (getNamespaceId().equals(Namespaces.ACCUMULO_NAMESPACE_ID))
      parentFilter = new SystemNamespaceFilter(filter);

    parent.getProperties(props, parentFilter);

    ZooCache zc = getPropCache();

    List<String> children = zc.getChildren(ZooUtil.getRoot(inst.getInstanceID()) + Constants.ZNAMESPACES + "/" + getNamespaceId() + Constants.ZNAMESPACE_CONF);
    if (children != null) {
      for (String child : children) {
        if (child != null && filter.accept(child)) {
          String value = get(zc, child);
          if (value != null)
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  static synchronized void listInstances(String keepers, boolean printAll, boolean printErrors) {
    errors = 0;

    System.out.println("INFO : Using ZooKeepers " + keepers);
    ZooReader rdr = new ZooReader(keepers, ZOOKEEPER_TIMER_MILLIS);
    ZooCache cache = new ZooCache(keepers, ZOOKEEPER_TIMER_MILLIS);

    TreeMap<String,UUID> instanceNames = getInstanceNames(rdr, printErrors);
   
    System.out.println();
    printHeader();
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public class ServerClient {
  private static final Logger log = Logger.getLogger(ServerClient.class);
  private static final Map<String,ZooCache> zooCaches = new HashMap<String,ZooCache>();
 
  synchronized static ZooCache getZooCache(Instance instance) {
    ZooCache result = zooCaches.get(instance.getZooKeepers());
    if (result == null) {
      result = new ZooCache(instance.getZooKeepers(), instance.getZooKeepersSessionTimeOut(), null);
      zooCaches.put(instance.getZooKeepers(), result);
    }
    return result;
  }
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    ArgumentChecker.notNull(instance);
    // create list of servers
    ArrayList<ThriftTransportKey> servers = new ArrayList<ThriftTransportKey>();
   
    // add tservers
    ZooCache zc = getZooCache(instance);
    for (String tserver : zc.getChildren(ZooUtil.getRoot(instance) + Constants.ZTSERVERS)) {
      String path = ZooUtil.getRoot(instance) + Constants.ZTSERVERS + "/" + tserver;
      byte[] data = ZooUtil.getLockData(zc, path);
      if (data != null && !new String(data, Constants.UTF8).equals("master"))
        servers.add(new ThriftTransportKey(
          new ServerServices(new String(data)).getAddressString(Service.TSERV_CLIENT),
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    }
    return ZooCache.getInstance(instance.getZooKeepers(), instance.getZooKeepersSessionTimeOut());
  }

  private static SortedMap<String,String> getMap(Instance instance, boolean nameAsKey) {
    ZooCache zc = getZooCache(instance);

    List<String> namespaceIds = zc.getChildren(ZooUtil.getRoot(instance) + Constants.ZNAMESPACES);

    TreeMap<String,String> namespaceMap = new TreeMap<String,String>();

    for (String id : namespaceIds) {
      byte[] path = zc.get(ZooUtil.getRoot(instance) + Constants.ZNAMESPACES + "/" + id + Constants.ZNAMESPACE_NAME);
      if (path != null) {
        if (nameAsKey)
          namespaceMap.put(new String(path, Constants.UTF8), id);
        else
          namespaceMap.put(id, new String(path, Constants.UTF8));
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    }
    return namespaceMap;
  }

  public static boolean exists(Instance instance, String namespaceId) {
    ZooCache zc = getZooCache(instance);
    List<String> namespaceIds = zc.getChildren(ZooUtil.getRoot(instance) + Constants.ZNAMESPACES);
    return namespaceIds.contains(namespaceId);
  }
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    }
    return ZooCache.getInstance(instance.getZooKeepers(), instance.getZooKeepersSessionTimeOut());
  }

  private static SortedMap<String,String> getMap(Instance instance, boolean nameAsKey) {
    ZooCache zc = getZooCache(instance);

    List<String> tableIds = zc.getChildren(ZooUtil.getRoot(instance) + Constants.ZTABLES);
    TreeMap<String,String> tableMap = new TreeMap<String,String>();
    Map<String,String> namespaceIdToNameMap = new HashMap<String,String>();

    for (String tableId : tableIds) {
      byte[] tableName = zc.get(ZooUtil.getRoot(instance) + Constants.ZTABLES + "/" + tableId + Constants.ZTABLE_NAME);
      byte[] nId = zc.get(ZooUtil.getRoot(instance) + Constants.ZTABLES + "/" + tableId + Constants.ZTABLE_NAMESPACE);
      String namespaceName = Namespaces.DEFAULT_NAMESPACE;
      // create fully qualified table name
      if (nId == null) {
        namespaceName = null;
      } else {
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  public static SortedMap<String,String> getIdToNameMap(Instance instance) {
    return getMap(instance, false);
  }

  public static boolean exists(Instance instance, String tableId) {
    ZooCache zc = getZooCache(instance);
    List<String> tableIds = zc.getChildren(ZooUtil.getRoot(instance) + Constants.ZTABLES);
    return tableIds.contains(tableId);
  }
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    return tableId == null ? String.format("%s(?)", tableName) : String.format("%s(ID:%s)", tableName, tableId);
  }

  public static TableState getTableState(Instance instance, String tableId) {
    String statePath = ZooUtil.getRoot(instance) + Constants.ZTABLES + "/" + tableId + Constants.ZTABLE_STATE;
    ZooCache zc = getZooCache(instance);
    byte[] state = zc.get(statePath);
    if (state == null)
      return TableState.UNKNOWN;

    return TableState.valueOf(new String(state, Constants.UTF8));
  }
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   *           if the table doesn't exist in ZooKeeper
   */
  public static String getNamespaceId(Instance instance, String tableId) throws IllegalArgumentException {
    ArgumentChecker.notNull(instance, tableId);

    ZooCache zc = getZooCache(instance);
    byte[] n = zc.get(ZooUtil.getRoot(instance) + Constants.ZTABLES + "/" + tableId + Constants.ZTABLE_NAMESPACE);

    // We might get null out of ZooCache if this tableID doesn't exist
    if (null == n) {
      throw new IllegalArgumentException("Table with id " + tableId + " does not exist");
    }
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Related Classes of org.apache.accumulo.fate.zookeeper.ZooCache

  • org.apache.accumulo.core.client.admin.InstanceOperationsImpl
  • org.apache.accumulo.core.client.impl.InstanceOperationsImpl
  • org.apache.accumulo.core.client.impl.Namespaces
  • org.apache.accumulo.core.client.impl.RootTabletLocator
  • org.apache.accumulo.core.client.impl.ServerClient
  • org.apache.accumulo.core.client.impl.Tables
  • org.apache.accumulo.server.client.HdfsZooInstance
  • org.apache.accumulo.server.conf.NamespaceConfiguration
  • org.apache.accumulo.server.conf.TableConfiguration
  • org.apache.accumulo.server.conf.ZooConfiguration
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