public class MERGE extends Protocol implements java.lang.Runnable
Modifier and Type | Class and Description |
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static class |
MERGE.MergeHeader |
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 |
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MERGE() |
Modifier and Type | Method and Description |
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void |
down(Event evt)
An event is to be sent down the stack.
|
java.lang.String |
getName() |
void |
run()
If IP multicast: periodically mcast a HELLO message
If gossiping: periodically retrieve the membership.
|
boolean |
setProperties(java.util.Properties props)
Configures the protocol initially.
|
void |
start()
This method is called on a
Channel.connect(String) . |
void |
stop()
This method is called on a
Channel.disconnect() . |
void |
up(Event evt)
An event was received from the layer below.
|
destroy, downThreadEnabled, dumpStats, enableStats, getDownProtocol, getDownQueue, getProperties, getUpProtocol, getUpQueue, handleSpecialDownEvent, init, passDown, passUp, printStats, providedDownServices, providedUpServices, receiveDownEvent, receiveUpEvent, requiredDownServices, requiredUpServices, resetStats, setDownProtocol, setObserver, setPropertiesInternal, setProtocolStack, setUpProtocol, startDownHandler, startUpHandler, statsEnabled, stopInternal, upThreadEnabled
public boolean setProperties(java.util.Properties props)
Protocol
"loopback=false;unicast_inport=4444"
setProperties
in class Protocol
public void start() throws java.lang.Exception
Protocol
Channel.connect(String)
. Starts work.
Protocols are connected and queues are ready to receive events.
Will be called from bottom to top. This call will replace
the START and START_OK events.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()
Protocol
Channel.disconnect()
. Stops work (e.g. by closing multicast socket).
Will be called from top to bottom. This means that at the time of the method invocation the
neighbor protocol below is still working. This method will replace the
STOP, STOP_OK, CLEANUP and CLEANUP_OK events. The ProtocolStack guarantees that
when this method is called all messages in the down queue will have been flushedpublic void up(Event evt)
Protocol
passDown()
or c) the event (or another event) is sent up
the stack using passUp()
.public void down(Event evt)
Protocol
passDown()
. 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 passUp()
.public void run()
run
in interface java.lang.Runnable
Copyright ? 1998-2006 Bela Ban. All Rights Reserved.