org.apache.hadoop.hbase.security.visibility
Class ZKVisibilityLabelWatcher

java.lang.Object
  org.apache.hadoop.hbase.zookeeper.ZooKeeperListener
      org.apache.hadoop.hbase.security.visibility.ZKVisibilityLabelWatcher

@InterfaceAudience.Private
public class ZKVisibilityLabelWatcher
extends ZooKeeperListener

A zk watcher that watches the labels table znode. This would create a znode /hbase/visibility_labels and will have a serialized form of a set of labels in the system.

Field Summary

Fields inherited from class org.apache.hadoop.hbase.zookeeper.ZooKeeperListener

watcher

Constructor Summary

ZKVisibilityLabelWatcher(ZooKeeperWatcher watcher, VisibilityLabelsCache labelsCache, org.apache.hadoop.conf.Configuration conf)

Method Summary

void	nodeChildrenChanged(String path)
void	nodeCreated(String path)
void	nodeDataChanged(String path)
void	nodeDeleted(String path)
void	start()
void	writeToZookeeper(byte[] data, boolean labelsOrUserAuths) Write a labels mirror or user auths mirror into zookeeper

Methods inherited from class org.apache.hadoop.hbase.zookeeper.ZooKeeperListener

getWatcher

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ZKVisibilityLabelWatcher

public ZKVisibilityLabelWatcher(ZooKeeperWatcher watcher,
                                VisibilityLabelsCache labelsCache,
                                org.apache.hadoop.conf.Configuration conf)

Method Detail

start

public void start()
           throws org.apache.zookeeper.KeeperException

Throws:

org.apache.zookeeper.KeeperException

nodeCreated

public void nodeCreated(String path)

Overrides:

nodeCreated in class ZooKeeperListener

nodeDeleted

public void nodeDeleted(String path)

Overrides:

nodeDeleted in class ZooKeeperListener

nodeDataChanged

public void nodeDataChanged(String path)

Overrides:

nodeDataChanged in class ZooKeeperListener

nodeChildrenChanged

public void nodeChildrenChanged(String path)

Overrides:

nodeChildrenChanged in class ZooKeeperListener

writeToZookeeper

public void writeToZookeeper(byte[] data,
                             boolean labelsOrUserAuths)

Write a labels mirror or user auths mirror into zookeeper

Parameters:

data -

labelsOrUserAuths - true for writing labels and false for user auths.