org.apache.pulsar.zookeeper

Class ZooKeeperChildrenCache

java.lang.Object

org.apache.pulsar.zookeeper.ZooKeeperChildrenCache

All Implemented Interfaces:

ZooKeeperCache.CacheUpdater<Set<String>>, org.apache.zookeeper.Watcher

public class ZooKeeperChildrenCache
extends Object
implements org.apache.zookeeper.Watcher, ZooKeeperCache.CacheUpdater<Set<String>>

This class keeps a cache of the children for several z-nodes and updates it whenever it's changed on zookeeper.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.zookeeper.Watcher

org.apache.zookeeper.Watcher.Event

Constructor Summary

Constructors

Constructor and Description
ZooKeeperChildrenCache(ZooKeeperCache cache, String path)

Method Summary

Modifier and Type	Method and Description
void	clear()
void	clearTree()
void	close()
Set<String>	get()
Set<String>	get(String path)
void	process(org.apache.zookeeper.WatchedEvent event)
void	registerListener(ZooKeeperCacheListener<Set<String>> listener)
void	reloadCache(String path)
void	unregisterListener(ZooKeeperCacheListener<Set<String>> listener)

Methods inherited from class java.lang.Object

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

Constructor Detail

ZooKeeperChildrenCache

public ZooKeeperChildrenCache(ZooKeeperCache cache,
                              String path)

Method Detail

get

public Set<String> get()
                throws org.apache.zookeeper.KeeperException,
                       InterruptedException

Throws:

org.apache.zookeeper.KeeperException

InterruptedException

get

public Set<String> get(String path)
                throws org.apache.zookeeper.KeeperException,
                       InterruptedException

Throws:

org.apache.zookeeper.KeeperException

InterruptedException

clear

public void clear()

clearTree

public void clearTree()

reloadCache

public void reloadCache(String path)

Specified by:

reloadCache in interface ZooKeeperCache.CacheUpdater<Set<String>>

registerListener

public void registerListener(ZooKeeperCacheListener<Set<String>> listener)

Specified by:

registerListener in interface ZooKeeperCache.CacheUpdater<Set<String>>

unregisterListener

public void unregisterListener(ZooKeeperCacheListener<Set<String>> listener)

Specified by:

unregisterListener in interface ZooKeeperCache.CacheUpdater<Set<String>>

process

public void process(org.apache.zookeeper.WatchedEvent event)

Specified by:

process in interface org.apache.zookeeper.Watcher

close

public void close()