com.fr.third.jgroups.fork

类 ForkProtocolStack

java.lang.Object

com.fr.third.jgroups.stack.Protocol

com.fr.third.jgroups.stack.ProtocolStack

com.fr.third.jgroups.fork.ForkProtocolStack

public class ForkProtocolStack
extends ProtocolStack

Protocol stack which maintains the mapping between fork-channel IDs and ForkChannels

从以下版本开始:

3.4

作者:

Bela Ban

嵌套类概要

从类继承的嵌套类/接口 com.fr.third.jgroups.stack.ProtocolStack

ProtocolStack.RefCounter

字段概要

字段

限定符和类型	字段和说明
protected java.util.concurrent.ConcurrentMap<java.lang.String,JChannel>	fork_channels
protected Address	local_addr

从类继承的字段 com.fr.third.jgroups.stack.ProtocolStack

ABOVE, BELOW, bottom_prot, channel, max_list_print_size, props_handler, singleton_transports, stopped, top_prot

从类继承的字段 com.fr.third.jgroups.stack.Protocol

down_prot, ergonomics, id, log, name, stack, stats, up_prot

构造器概要

构造器

构造器和说明
ForkProtocolStack()

方法概要

方法

限定符和类型	方法和说明
java.lang.Object	down(Event evt) An event is to be sent down the stack.
JChannel	get(java.lang.String fork_channel_id)
JChannel	putIfAbsent(java.lang.String fork_channel_id, JChannel fork_channel)
void	remove(java.lang.String fork_channel_id)
void	setLocalAddress(Address addr)
java.lang.Object	up(Event evt) An event was received from the layer below.
void	up(MessageBatch batch) Sends up a multiple messages in a MessageBatch.

从类继承的方法 com.fr.third.jgroups.stack.ProtocolStack

addProtocol, addProtocols, addProtocols, bottomProtocol, copyProtocols, createProtocol, destroy, dumpStats, dumpStats, dumpStats, findProtocol, findProtocol, findProtocol, getBottomProtocol, getChannel, getName, getProtocols, getSingletonTransports, getTopProtocol, getTransport, init, initProtocolStack, insertProtocol, insertProtocol, insertProtocol, insertProtocolAtTop, insertProtocolInStack, printProtocolSpec, printProtocolSpecAsPlainString, printProtocolSpecAsXML, removeProtocol, removeProtocol, removeProtocol, removeProtocol, removeProtocols, replaceProtocol, setChannel, setup, setup, startStack, stopStack, topProtocol

从类继承的方法 com.fr.third.jgroups.stack.Protocol

accept, enableStats, getConfigurableObjects, getDownProtocol, getDownServices, getId, getIdsAbove, getLevel, getProtocolStack, getSocketFactory, getThreadFactory, getUpProtocol, getUpServices, getValue, isErgonomics, level, parse, printStats, providedDownServices, providedUpServices, requiredDownServices, requiredUpServices, resetStatistics, resetStats, setDownProtocol, setErgonomics, setId, setLevel, setProtocolStack, setSocketFactory, setUpProtocol, setValue, setValues, start, statsEnabled, stop

从类继承的方法 java.lang.Object

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

字段详细资料

local_addr

protected Address local_addr

fork_channels

protected final java.util.concurrent.ConcurrentMap<java.lang.String,JChannel> fork_channels

构造器详细资料

ForkProtocolStack

public ForkProtocolStack()

方法详细资料

get

public JChannel get(java.lang.String fork_channel_id)

putIfAbsent

public JChannel putIfAbsent(java.lang.String fork_channel_id,
                   JChannel fork_channel)

remove

public void remove(java.lang.String fork_channel_id)

down

public java.lang.Object down(Event evt)

从类复制的说明: Protocol

An event is to be sent down the stack. The layer may want to examine its type and perform some action on it, depending on the event's type. If the event is a message MSG, then the layer may need to add a header to it (or do nothing at all) before sending it down the stack using down_prot.down(). In case of a GET_ADDRESS event (which tries to retrieve the stack's address from one of the bottom layers), the layer may need to send a new response event back up the stack using up_prot.up().

覆盖:

down 在类中 ProtocolStack

setLocalAddress

public void setLocalAddress(Address addr)

up

public java.lang.Object up(Event evt)

从类复制的说明: Protocol

An event was received from the layer below. Usually the current layer will want to examine the event type and - depending on its type - perform some computation (e.g. removing headers from a MSG event type, or updating the internal membership list when receiving a VIEW_CHANGE event). Finally the event is either a) discarded, or b) an event is sent down the stack using down_prot.down() or c) the event (or another event) is sent up the stack using up_prot.up().

覆盖:

up 在类中 ProtocolStack

up

public void up(MessageBatch batch)

从类复制的说明: Protocol

Sends up a multiple messages in a MessageBatch. The sender of the batch is always the same, and so is the destination (null == multicast messages). Messages in a batch can be OOB messages, regular messages, or mixed messages, although the transport itself will create initial MessageBatches that contain only either OOB or regular messages.

The default processing below sends messages up the stack individually, based on a matching criteria (calling Protocol.accept(Message)), and - if true - calls Protocol.up(Event) for that message and removes the message. If the batch is not empty, it is passed up, or else it is dropped.

Subclasses should check if there are any messages destined for them (e.g. using MessageBatch.getMatchingMessages(short, boolean)), then possibly remove and process them and finally pass the batch up to the next protocol. Protocols can also modify messages in place, e.g. ENCRYPT could decrypt all encrypted messages in the batch, not remove them, and pass the batch up when done.

覆盖:

up 在类中 ProtocolStack

参数:

batch - The message batch