com.fr.third.jgroups.protocols

类 SIZE

java.lang.Object

com.fr.third.jgroups.stack.Protocol

com.fr.third.jgroups.protocols.SIZE

public class SIZE
extends Protocol

Protocol which prints out the real size of a message. Don't use this layer in a production stack since the costs are high (just for debugging).

作者:

Bela Ban June 13 2001

字段概要

字段

限定符和类型	字段和说明
protected Address	local_addr
protected java.util.List<Address>	members
protected long	min_size Min size in bytes above which msgs should be printed
protected boolean	print_msg
protected boolean	raw_buffer

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
SIZE()

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.
protected static int	numHeaders(Message msg)
protected static int	numHeaders(MessageBatch batch)
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.Protocol

accept, destroy, dumpStats, enableStats, getConfigurableObjects, getDownProtocol, getDownServices, getId, getIdsAbove, getLevel, getName, getProtocolStack, getSocketFactory, getThreadFactory, getTransport, getUpProtocol, getUpServices, getValue, init, 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

members

protected final java.util.List<Address> members

print_msg

protected boolean print_msg

raw_buffer

protected boolean raw_buffer

min_size

protected long min_size

Min size in bytes above which msgs should be printed

local_addr

protected Address local_addr

构造器详细资料

SIZE

public SIZE()

方法详细资料

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 Protocol

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 Protocol

参数:

batch - The message batch

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 Protocol

numHeaders

protected static int numHeaders(Message msg)

numHeaders

protected static int numHeaders(MessageBatch batch)