Package com.alibaba.druid.pool.ha.node

Class ZookeeperNodeListener

java.lang.Object

java.util.Observable

com.alibaba.druid.pool.ha.node.NodeListener

com.alibaba.druid.pool.ha.node.ZookeeperNodeListener

public class ZookeeperNodeListener
extends NodeListener

A NodeListener that watches a Zookeeper Path. e.g. Path to watch:

 + ha-druid-datasources
 |---- NodeA
 |---- NodeB
 

The Data of NodeA (in Java properties format):

 foo.host=xxx.xxx.xxx.xxx
 foo.port=3308
 foo.username=foo
 foo.password=foo_password

 bar.host=xxx.xxx.xxx.xxx
 bar.port=3309
 bar.username=bar
 bar.password=bar_password
 bar.database=bar_database
 

Author:

DigitalSonic

Constructor Summary

Constructors

Constructor	Description
ZookeeperNodeListener()

Method Summary

Modifier and Type	Method	Description
void	destroy()	Close PathChildrenCache and CuratorFramework.
org.apache.curator.framework.CuratorFramework	getClient()
String	getPath()
String	getUrlTemplate()
String	getZkConnectString()
void	init()	Init a PathChildrenCache to watch the given path.
List<NodeEvent>	refresh()	Build Properties from PathChildrenCache.
void	setClient(org.apache.curator.framework.CuratorFramework client)
void	setPath(String path)
void	setUrlTemplate(String urlTemplate)
void	setZkConnectString(String zkConnectString)

Methods inherited from class com.alibaba.druid.pool.ha.node.NodeListener

getLastUpdateTime, getObserver, getPrefix, getProperties, setLastUpdateTime, setObserver, setPrefix, setProperties, update, update

Methods inherited from class java.util.Observable

addObserver, clearChanged, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers, setChanged

Methods inherited from class java.lang.Object

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

Constructor Details

ZookeeperNodeListener

public ZookeeperNodeListener()

Method Details

init

public void init()

Init a PathChildrenCache to watch the given path.

Overrides:

init in class NodeListener

See Also:

• NodeListener.setObserver(Observer)

destroy

public void destroy()

Close PathChildrenCache and CuratorFramework.

Specified by:

destroy in class NodeListener

refresh

public List<NodeEvent> refresh()

Build Properties from PathChildrenCache. Should be called after init().

Specified by:

refresh in class NodeListener

See Also:

• getPropertiesFromCache()

setClient

public void setClient(org.apache.curator.framework.CuratorFramework client)

getClient

public org.apache.curator.framework.CuratorFramework getClient()

getZkConnectString

public String getZkConnectString()

setZkConnectString

public void setZkConnectString(String zkConnectString)

getPath

public String getPath()

setPath

public void setPath(String path)

getUrlTemplate

public String getUrlTemplate()

setUrlTemplate

public void setUrlTemplate(String urlTemplate)