org.apache.dubbo.remoting.zookeeper

接口 ZookeeperClient

所有已知实现类:

AbstractZookeeperClient

public interface ZookeeperClient

Common abstraction of Zookeeper client.

方法概要

限定符和类型	方法和说明
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)
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 ticket)
void	delete(String path) Delete ZNode.
List<String>	getChildren(String path)
ConfigItem	getConfigItem(String path)
String	getContent(String path) Obtain the content of a ZNode.
URL	getUrl()
boolean	isConnected() Check the Zookeeper client whether connected to server or not.
void	removeChildListener(String path, ChildListener listener)
void	removeDataListener(String path, DataListener listener) Detach data listener.
void	removeStateListener(StateListener listener)

方法详细资料

create

void create(String path,
            boolean ephemeral)

Create ZNode in Zookeeper.

参数:

path - path to ZNode

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

delete

void delete(String path)

Delete ZNode.

参数:

path - path to ZNode

getChildren

List<String> getChildren(String path)

addChildListener

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

addDataListener

void addDataListener(String path,
                     DataListener listener)

Attach data listener to current Zookeeper client.

参数:

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

listener - The data listener object.

addDataListener

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

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

参数:

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

listener - The data listener object.

executor - the executor that will execute the listener.

removeDataListener

void removeDataListener(String path,
                        DataListener listener)

Detach data listener.

参数:

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

listener - The data listener object.

removeChildListener

void removeChildListener(String path,
                         ChildListener listener)

addStateListener

void addStateListener(StateListener listener)

removeStateListener

void removeStateListener(StateListener listener)

isConnected

boolean isConnected()

Check the Zookeeper client whether connected to server or not.

返回:

true if connected

close

void close()

Close connection to Zookeeper server (cluster).

getUrl

URL getUrl()

create

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

Create ZNode in Zookeeper with content specified.

参数:

path - path to ZNode

content - the content of ZNode

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

createOrUpdate

void createOrUpdate(String path,
                    String content,
                    boolean ephemeral,
                    int ticket)

getContent

String getContent(String path)

Obtain the content of a ZNode.

参数:

path - path to ZNode

返回:

content of ZNode

getConfigItem

ConfigItem getConfigItem(String path)

checkExists

boolean checkExists(String path)