public class TOTAL extends Protocol
BLOCK_OK
is acknowledged messages
coming from above are discarded! Either the application must stop
sending messages when a BLOCK
event is received from the
channel or a QUEUE layer should be placed above this one. Received messages
are still delivered above though.
bcast requests are retransmitted periodically until a bcast reply is
received. In case a BCAST_REP is on its way during a BCAST_REQ
retransmission, then the next BCAST_REP will be to a non-existing
BCAST_REQ. So, a null BCAST message is sent to fill the created gap in
the seqID of all members.Modifier and Type | Class and Description |
---|---|
static class |
TOTAL.Header
The header processed by the TOTAL layer and intended for TOTAL
inter-stack communication
|
down_handler, down_prot, down_queue, down_thread, down_thread_prio, log, observer, props, stack, stats, up_handler, up_prot, up_queue, up_thread, up_thread_prio
Constructor and Description |
---|
TOTAL()
Create the TOTAL layer
|
Modifier and Type | Method and Description |
---|---|
void |
down(Event event)
Process an event coming from the layer above
|
java.lang.String |
getName() |
java.util.Vector |
requiredDownServices()
Events that some layer below must handle
|
java.util.Vector |
requiredUpServices()
Events that some layer above must handle
|
boolean |
setProperties(java.util.Properties properties)
Configure the protocol based on the given list of properties
|
void |
start()
Prepare this layer to receive messages from above
|
void |
stop()
Handle the stop() method travelling down the stack.
|
void |
up(Event event)
Process an event coming from the layer below
|
destroy, downThreadEnabled, dumpStats, enableStats, getDownProtocol, getDownQueue, getProperties, getUpProtocol, getUpQueue, handleSpecialDownEvent, init, passDown, passUp, printStats, providedDownServices, providedUpServices, receiveDownEvent, receiveUpEvent, resetStats, setDownProtocol, setObserver, setPropertiesInternal, setProtocolStack, setUpProtocol, startDownHandler, startUpHandler, statsEnabled, stopInternal, upThreadEnabled
public java.lang.String getName()
public boolean setProperties(java.util.Properties properties)
setProperties
in class Protocol
properties
- the list of properties to use to setup this layerpublic java.util.Vector requiredDownServices()
requiredDownServices
in class Protocol
Event
s that must be handled by some layer
belowpublic java.util.Vector requiredUpServices()
requiredUpServices
in class Protocol
Event
s that must be handled by some
layer abovepublic void start() throws java.lang.Exception
start
in class Protocol
java.lang.Exception
- Thrown if protocol cannot be started successfully. This will cause the ProtocolStack
to fail, so Channel.connect(String)
will throw an exceptionpublic void stop()
public void up(Event event)
Copyright ? 1998-2006 Bela Ban. All Rights Reserved.