Package org.jgroups.protocols

Class HTOTAL

java.lang.Object

org.jgroups.stack.Protocol

org.jgroups.protocols.HTOTAL

public class HTOTAL
extends Protocol

Implementation of UTO-TCP as designed by EPFL. Implements chaining algorithm: each sender sends the message to a coordinator who then forwards it to its neighbor on the right, who then forwards it to its neighbor to the right etc.

This protocol has not yet been completed and is experimental at best !

Version:

$Id: HTOTAL.java,v 1.8 2007/04/27 07:59:19 belaban Exp $

Author:

Bela Ban

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	HTOTAL.HTotalHeader

Field Summary

Fields inherited from class org.jgroups.stack.Protocol

down_prot, log, props, stack, stats, up_prot

Constructor Summary

Constructors

Constructor	Description
HTOTAL()

Method Summary

Modifier and Type	Method	Description
java.lang.Object	down(Event evt)	An event is to be sent down the stack.
java.lang.String	getName()
boolean	setProperties(java.util.Properties props)	Configures the protocol initially.
java.lang.Object	up(Event evt)	An event was received from the layer below.

Methods inherited from class java.lang.Object

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

Methods inherited from class org.jgroups.stack.Protocol

destroy, downThreadEnabled, dumpStats, enableStats, getDownProtocol, getProperties, getProtocolStack, getThreadFactory, getTransport, getUpProtocol, init, printStats, providedDownServices, providedUpServices, requiredDownServices, requiredUpServices, resetStats, setDownProtocol, setPropertiesInternal, setProtocolStack, setUpProtocol, start, statsEnabled, stop, upThreadEnabled

Constructor Detail

HTOTAL

public HTOTAL()

Method Detail

getName

public final java.lang.String getName()

Specified by:

getName in class Protocol

setProperties

public boolean setProperties(java.util.Properties props)

Description copied from class: Protocol

Configures the protocol initially. A configuration string consists of name=value items, separated by a ';' (semicolon), e.g.:

 "loopback=false;unicast_inport=4444"
 

Overrides:

setProperties in class Protocol

down

public java.lang.Object down(Event evt)

Description copied from class: 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().

Overrides:

down in class Protocol

up

public java.lang.Object up(Event evt)

Description copied from class: 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().

Overrides:

up in class Protocol