com.fr.third.jgroups

类 ReceiverAdapter

java.lang.Object

com.fr.third.jgroups.ReceiverAdapter

所有已实现的接口:

MembershipListener, MessageListener, Receiver

直接已知子类:

Chat, Draw, FlowControlTest, LargeState, MPerf, MPerfRpc, MyReceiver, PingPong, QuoteServer, RELAY.Receiver, RelayDemoRpc, Relayer.Bridge, ReplicatedTree, RoundTrip, RoundTripMulticast, UnicastTest.MyReceiver, UnicastTestRpc, UPerf, UUPerf, ViewDemo

public class ReceiverAdapter
extends java.lang.Object
implements Receiver

An adapter implementing the Receiver interface with no-op implementations. When implementing a callback, we can simply extend ReceiverAdapter and overwrite receive() in order to not having to implement all callbacks of the interface.

从以下版本开始:

2.0

作者:

Bela Ban

构造器概要

构造器

构造器和说明
ReceiverAdapter()

方法概要

方法

限定符和类型	方法和说明
void	block() Called (usually by the FLUSH protocol), as an indication that the member should stop sending messages.
void	getState(java.io.OutputStream output) Allows an application to write a state through a provided OutputStream.
void	receive(Message msg) Called when a message is received.
void	setState(java.io.InputStream input) Allows an application to read a state through a provided InputStream.
void	suspect(Address mbr) Called whenever a member is suspected of having crashed, but has not yet been excluded.
void	unblock() Called after the FLUSH protocol has unblocked previously blocked senders, and messages can be sent again.
void	viewAccepted(View view) Called when a change in membership has occurred.

从类继承的方法 java.lang.Object

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

构造器详细资料

ReceiverAdapter

public ReceiverAdapter()

方法详细资料

receive

public void receive(Message msg)

Called when a message is received.

指定者:

receive 在接口中 MessageListener

getState

public void getState(java.io.OutputStream output)
              throws java.lang.Exception

Allows an application to write a state through a provided OutputStream. After the state has been written the OutputStream doesn't need to be closed as stream closing is automatically done when a calling thread returns from this callback.

指定者:

getState 在接口中 MessageListener

参数:

output - the OutputStream

抛出:

java.lang.Exception - if the streaming fails, any exceptions should be thrown so that the state requester can re-throw them and let the caller know what happened

另请参阅:

OutputStream.close()

setState

public void setState(java.io.InputStream input)
              throws java.lang.Exception

Allows an application to read a state through a provided InputStream. After the state has been read the InputStream doesn't need to be closed as stream closing is automatically done when a calling thread returns from this callback.

指定者:

setState 在接口中 MessageListener

参数:

input - the InputStream

抛出:

java.lang.Exception - if the streaming fails, any exceptions should be thrown so that the state requester can catch them and thus know what happened

另请参阅:

InputStream.close()

viewAccepted

public void viewAccepted(View view)

Called when a change in membership has occurred. No long running actions, sending of messages or anything that could block should be done in this callback. If some long running action needs to be performed, it should be done in a separate thread.

Note that on reception of the first view (a new member just joined), the channel will not yet be in the connected state. This only happens when Channel.connect(String) returns.

指定者:

viewAccepted 在接口中 MembershipListener

suspect

public void suspect(Address mbr)

Called whenever a member is suspected of having crashed, but has not yet been excluded.

指定者:

suspect 在接口中 MembershipListener

block

public void block()

Called (usually by the FLUSH protocol), as an indication that the member should stop sending messages. Any messages sent after returning from this callback might get blocked by the FLUSH protocol. When the FLUSH protocol is done, and messages can be sent again, the FLUSH protocol will simply unblock all pending messages. If a callback for unblocking is desired, implement MembershipListener.unblock(). Note that block() is the equivalent of reception of a BlockEvent in the pull mode.

指定者:

block 在接口中 MembershipListener

unblock

public void unblock()

Called after the FLUSH protocol has unblocked previously blocked senders, and messages can be sent again. This callback only needs to be implemented if we require a notification of that.

Note that during new view installation we provide guarantee that unblock invocation strictly follows view installation at some node A belonging to that view . However, some other message M may squeeze in between view and unblock callbacks.

For more details see https://jira.jboss.org/jira/browse/JGRP-986

指定者:

unblock 在接口中 MembershipListener