org.apache.dubbo.remoting.zookeeper

Class AbstractZookeeperClient<TargetDataListener,TargetChildListener>

java.lang.Object

org.apache.dubbo.remoting.zookeeper.AbstractZookeeperClient<TargetDataListener,TargetChildListener>

All Implemented Interfaces:

ZookeeperClient

public abstract class AbstractZookeeperClient<TargetDataListener,TargetChildListener>
extends Object
implements ZookeeperClient

Constructor Summary

Constructors

Constructor and Description
AbstractZookeeperClient(URL url)

Method Summary

Modifier and Type	Method and Description
List<String>	addChildListener(String path, ChildListener listener)
void	addDataListener(String path, DataListener listener) Attach data listener to current Zookeeper client.
void	addDataListener(String path, DataListener listener, Executor executor) Attach data listener to current Zookeeper client.
void	addStateListener(StateListener listener)
abstract boolean	checkExists(String path)
void	close() Close connection to Zookeeper server (cluster).
void	create(String path, boolean ephemeral) Create ZNode in Zookeeper.
void	create(String path, String content, boolean ephemeral) Create ZNode in Zookeeper with content specified.
void	createOrUpdate(String path, String content, boolean ephemeral, int version)
void	delete(String path) Delete ZNode.
ConfigItem	getConfigItem(String path)
String	getContent(String path) Obtain the content of a ZNode.
Set<StateListener>	getSessionListeners()
URL	getUrl()
void	removeChildListener(String path, ChildListener listener)
void	removeDataListener(String path, DataListener listener) Detach data listener.
void	removeStateListener(StateListener listener)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.dubbo.remoting.zookeeper.ZookeeperClient

getChildren, isConnected

Constructor Detail

AbstractZookeeperClient

public AbstractZookeeperClient(URL url)

Method Detail

getUrl

public URL getUrl()

Specified by:

getUrl in interface ZookeeperClient

delete

public void delete(String path)

Description copied from interface: ZookeeperClient

Delete ZNode.

Specified by:

delete in interface ZookeeperClient

Parameters:

path - path to ZNode

create

public void create(String path,
                   boolean ephemeral)

Description copied from interface: ZookeeperClient

Create ZNode in Zookeeper.

Specified by:

create in interface ZookeeperClient

Parameters:

path - path to ZNode

ephemeral - specify create mode of ZNode creation. true - EPHEMERAL, false - PERSISTENT.

addStateListener

public void addStateListener(StateListener listener)

Specified by:

addStateListener in interface ZookeeperClient

removeStateListener

public void removeStateListener(StateListener listener)

Specified by:

removeStateListener in interface ZookeeperClient

getSessionListeners

public Set<StateListener> getSessionListeners()

addChildListener

public List<String> addChildListener(String path,
                                     ChildListener listener)

Specified by:

addChildListener in interface ZookeeperClient

addDataListener

public void addDataListener(String path,
                            DataListener listener)

Description copied from interface: ZookeeperClient

Attach data listener to current Zookeeper client.

Specified by:

addDataListener in interface ZookeeperClient

Parameters:

path - directory. All children of path will be listened.

listener - The data listener object.

addDataListener

public void addDataListener(String path,
                            DataListener listener,
                            Executor executor)

Description copied from interface: ZookeeperClient

Attach data listener to current Zookeeper client. The listener will be executed using the given executor.

Specified by:

addDataListener in interface ZookeeperClient

Parameters:

path - directory. All children of path will be listened.

listener - The data listener object.

executor - the executor that will execute the listener.

removeDataListener

public void removeDataListener(String path,
                               DataListener listener)

Description copied from interface: ZookeeperClient

Detach data listener.

Specified by:

removeDataListener in interface ZookeeperClient

Parameters:

path - directory. All listener of children of the path will be detached.

listener - The data listener object.

removeChildListener

public void removeChildListener(String path,
                                ChildListener listener)

Specified by:

removeChildListener in interface ZookeeperClient

close

public void close()

Description copied from interface: ZookeeperClient

Close connection to Zookeeper server (cluster).

Specified by:

close in interface ZookeeperClient

create

public void create(String path,
                   String content,
                   boolean ephemeral)

Description copied from interface: ZookeeperClient

Create ZNode in Zookeeper with content specified.

Specified by:

create in interface ZookeeperClient

Parameters:

path - path to ZNode

content - the content of ZNode

ephemeral - specify create mode of ZNode creation. true - EPHEMERAL, false - PERSISTENT.

createOrUpdate

public void createOrUpdate(String path,
                           String content,
                           boolean ephemeral,
                           int version)

Specified by:

createOrUpdate in interface ZookeeperClient

getContent

public String getContent(String path)

Description copied from interface: ZookeeperClient

Obtain the content of a ZNode.

Specified by:

getContent in interface ZookeeperClient

Parameters:

path - path to ZNode

Returns:

content of ZNode

getConfigItem

public ConfigItem getConfigItem(String path)

Specified by:

getConfigItem in interface ZookeeperClient

checkExists

public abstract boolean checkExists(String path)

Specified by:

checkExists in interface ZookeeperClient