org.apache.pulsar.zookeeper

Class ZooKeeperSessionWatcher

java.lang.Object

org.apache.pulsar.zookeeper.ZooKeeperSessionWatcher

All Implemented Interfaces:

Closeable, AutoCloseable, Runnable, AsyncCallback, AsyncCallback.StatCallback, Watcher

public class ZooKeeperSessionWatcher
extends Object
implements Watcher, AsyncCallback.StatCallback, Runnable, Closeable

A ZooKeeper watcher for the Pulsar instance. Monitor the ZK session state every few seconds. If the session is not in Connected state for a while, we will kill the process before the session is supposed to expire

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	ZooKeeperSessionWatcher.ShutdownService

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

Watcher.Event, Watcher.WatcherType

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

AsyncCallback.ACLCallback, AsyncCallback.AllChildrenNumberCallback, AsyncCallback.Children2Callback, AsyncCallback.ChildrenCallback, AsyncCallback.Create2Callback, AsyncCallback.DataCallback, AsyncCallback.EphemeralsCallback, AsyncCallback.MultiCallback, AsyncCallback.StatCallback, AsyncCallback.StringCallback, AsyncCallback.VoidCallback

Constructor Summary

Constructors

Constructor and Description
ZooKeeperSessionWatcher(ZooKeeper zk, long zkSessionTimeoutMillis, ZookeeperSessionExpiredHandler sessionExpiredHandler)

Method Summary

Modifier and Type	Method and Description
void	close()
Watcher.Event.KeeperState	getKeeperState()
boolean	isShutdownStarted()
void	process(WatchedEvent event)
void	processResult(int rc, String path, Object ctx, org.apache.zookeeper.data.Stat stat)
void	run()
void	start()

Methods inherited from class java.lang.Object

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

Constructor Detail

ZooKeeperSessionWatcher

public ZooKeeperSessionWatcher(ZooKeeper zk,
                               long zkSessionTimeoutMillis,
                               ZookeeperSessionExpiredHandler sessionExpiredHandler)

Method Detail

start

public void start()

getKeeperState

public Watcher.Event.KeeperState getKeeperState()

isShutdownStarted

public boolean isShutdownStarted()

process

public void process(WatchedEvent event)

Specified by:

process in interface Watcher

processResult

public void processResult(int rc,
                          String path,
                          Object ctx,
                          org.apache.zookeeper.data.Stat stat)

Specified by:

processResult in interface AsyncCallback.StatCallback

run

public void run()

Specified by:

run in interface Runnable

close

public void close()

Specified by:

close in interface Closeable

Specified by:

close in interface AutoCloseable