org.apache.dubbo.remoting.etcd.support

Class AbstractEtcdClient<WatcherListener>

java.lang.Object

org.apache.dubbo.remoting.etcd.support.AbstractEtcdClient<WatcherListener>

All Implemented Interfaces:

EtcdClient

Direct Known Subclasses:

JEtcdClient

public abstract class AbstractEtcdClient<WatcherListener>
extends Object
implements EtcdClient

Constructor Summary

Constructors

Constructor and Description
AbstractEtcdClient(URL url)

Method Summary

Modifier and Type	Method and Description
List<String>	addChildListener(String path, ChildListener listener) register children listener for specified path.
abstract List<String>	addChildWatcherListener(String path, WatcherListener listener)
void	addStateListener(StateListener listener) support connection notify if connection state was changed.
abstract boolean	checkExists(String path)
void	close() close current client and release all resourses.
void	create(String path) save the specified path to the etcd registry.
abstract WatcherListener	createChildWatcherListener(String path, ChildListener listener)
long	createEphemeral(String path) save the specified path to the etcd registry.
abstract void	delete(String path) remove the specified from etcd registry.
abstract void	doClose()
abstract long	doCreateEphemeral(String path)
abstract void	doCreatePersistent(String path)
WatcherListener	getChildListener(String path, ChildListener listener) find watcher of the children listener for specified path.
Set<StateListener>	getSessionListeners()
URL	getUrl()
void	removeChildListener(String path, ChildListener listener) unregister children lister for specified path.
abstract void	removeChildWatcherListener(String path, WatcherListener listener)
void	removeStateListener(StateListener listener) remove connection notify if connection state was changed.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.dubbo.remoting.etcd.EtcdClient

createLease, createLease, getChildren, getKVValue, isConnected, put, putEphemeral, revokeLease

Constructor Detail

AbstractEtcdClient

public AbstractEtcdClient(URL url)

Method Detail

getUrl

public URL getUrl()

Specified by:

getUrl in interface EtcdClient

create

public void create(String path)

Description copied from interface: EtcdClient

save the specified path to the etcd registry.

Specified by:

create in interface EtcdClient

Parameters:

path - the path to be saved

createEphemeral

public long createEphemeral(String path)

Description copied from interface: EtcdClient

save the specified path to the etcd registry. if node disconnect from etcd, it will be deleted automatically by etcd when session timeout.

Specified by:

createEphemeral in interface EtcdClient

Parameters:

path - the path to be saved

Returns:

the lease of current path.

addStateListener

public void addStateListener(StateListener listener)

Description copied from interface: EtcdClient

support connection notify if connection state was changed.

Specified by:

addStateListener in interface EtcdClient

Parameters:

listener - if state changed, listener will be triggered.

removeStateListener

public void removeStateListener(StateListener listener)

Description copied from interface: EtcdClient

remove connection notify if connection state was changed.

Specified by:

removeStateListener in interface EtcdClient

Parameters:

listener - remove already registered listener, if listener not exists nothing happened.

getSessionListeners

public Set<StateListener> getSessionListeners()

addChildListener

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

Description copied from interface: EtcdClient

register children listener for specified path.

Specified by:

addChildListener in interface EtcdClient

Parameters:

path - the path to be watched when children is added, delete or update.

listener - when children is changed , listener will be trigged.

Returns:

direct children directory, contains zero element list if children directory not exists.

getChildListener

public WatcherListener getChildListener(String path,
                                        ChildListener listener)

Description copied from interface: EtcdClient

find watcher of the children listener for specified path.

Specified by:

getChildListener in interface EtcdClient

Parameters:

path - the path to be watched when children is added, delete or update.

listener - when children is changed , listener will be trigged.

Returns:

watcher if find else null

removeChildListener

public void removeChildListener(String path,
                                ChildListener listener)

Description copied from interface: EtcdClient

unregister children lister for specified path.

Specified by:

removeChildListener in interface EtcdClient

Parameters:

path - the path to be unwatched .

listener - when children is changed , lister will be trigged.

close

public void close()

Description copied from interface: EtcdClient

close current client and release all resourses.

Specified by:

close in interface EtcdClient

doClose

public abstract void doClose()

doCreatePersistent

public abstract void doCreatePersistent(String path)

doCreateEphemeral

public abstract long doCreateEphemeral(String path)

delete

public abstract void delete(String path)

Description copied from interface: EtcdClient

remove the specified from etcd registry.

Specified by:

delete in interface EtcdClient

Parameters:

path - the path to be removed

checkExists

public abstract boolean checkExists(String path)

createChildWatcherListener

public abstract WatcherListener createChildWatcherListener(String path,
                                                           ChildListener listener)

addChildWatcherListener

public abstract List<String> addChildWatcherListener(String path,
                                                     WatcherListener listener)

removeChildWatcherListener

public abstract void removeChildWatcherListener(String path,
                                                WatcherListener listener)