Package org.apache.pulsar.zookeeper

Class ZooKeeperChildrenCache

java.lang.Object

org.apache.pulsar.zookeeper.ZooKeeperChildrenCache

All Implemented Interfaces:

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

public class ZooKeeperChildrenCache
extends java.lang.Object
implements org.apache.zookeeper.Watcher, ZooKeeperCache.CacheUpdater<java.util.Set<java.lang.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, org.apache.zookeeper.Watcher.WatcherType

Constructor Summary

Constructors

Constructor	Description
ZooKeeperChildrenCache(ZooKeeperCache cache, java.lang.String path)

Method Summary

Modifier and Type	Method	Description
void	clear()
void	close()
java.util.Set<java.lang.String>	get()
java.util.Set<java.lang.String>	get(java.lang.String path)
java.util.concurrent.CompletableFuture<java.util.Set<java.lang.String>>	getAsync()
java.util.concurrent.CompletableFuture<java.util.Set<java.lang.String>>	getAsync(java.lang.String path)
void	process(org.apache.zookeeper.WatchedEvent event)
void	registerListener(ZooKeeperCacheListener<java.util.Set<java.lang.String>> listener)
void	reloadCache(java.lang.String path)
void	unregisterListener(ZooKeeperCacheListener<java.util.Set<java.lang.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,
                              java.lang.String path)

Method Detail

get

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

Throws:

org.apache.zookeeper.KeeperException

java.lang.InterruptedException

get

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

Throws:

org.apache.zookeeper.KeeperException

java.lang.InterruptedException

getAsync

public java.util.concurrent.CompletableFuture<java.util.Set<java.lang.String>> getAsync()

getAsync

public java.util.concurrent.CompletableFuture<java.util.Set<java.lang.String>> getAsync(java.lang.String path)

clear

public void clear()

reloadCache

public void reloadCache(java.lang.String path)

Specified by:

reloadCache in interface ZooKeeperCache.CacheUpdater<java.util.Set<java.lang.String>>

registerListener

public void registerListener(ZooKeeperCacheListener<java.util.Set<java.lang.String>> listener)

Specified by:

registerListener in interface ZooKeeperCache.CacheUpdater<java.util.Set<java.lang.String>>

unregisterListener

public void unregisterListener(ZooKeeperCacheListener<java.util.Set<java.lang.String>> listener)

Specified by:

unregisterListener in interface ZooKeeperCache.CacheUpdater<java.util.Set<java.lang.String>>

process

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

Specified by:

process in interface org.apache.zookeeper.Watcher

close

public void close()