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java.lang.Objectorg.jgroups.stack.Protocol
org.jgroups.protocols.PARTITIONER
This layer can be put on top of the bottommost layer and is useful to simulate partitions.
It simply adds a header with its partition number and discards Messages with other partition numbers.
If it receives an Event of type Event.SET_PARTITIONS it sends a Header of type COMMAND with the Hashtable
contained in the Event argument to set the partitions of ALL processes (not just processes of the current view but
every process with the same group address that receives the message.
Nested Class Summary | |
static class |
PARTITIONER.PartitionerHeader
The Partitioner header normally (type = NORMAL) contains just the partition number that is checked to discard messages received from other partitions. |
Field Summary |
Fields inherited from class org.jgroups.stack.Protocol |
down_handler, down_prot, down_queue, down_thread, down_thread_prio, log, observer, props, stack, stats, trace, up_handler, up_prot, up_queue, up_thread, up_thread_prio, warn |
Constructor Summary | |
PARTITIONER()
|
Method Summary | |
void |
down(Event evt)
Adds to Messages a Header with the local partitin number and if receives a SET_PARTITIONS Event sends a new Message with a PartitionerHeader set to COMMAND that carries the Hashtable |
java.lang.String |
getName()
All protocol names have to be unique ! |
void |
reset()
Just remove if you don't need to reset any state |
boolean |
setProperties(java.util.Properties props)
Configures the protocol initially. |
void |
up(Event evt)
Discards Messages with the wrong partition number and sets local partition number if it receives a COMMAND Header |
Methods inherited from class org.jgroups.stack.Protocol |
destroy, downThreadEnabled, dumpStats, enableStats, getDownProtocol, getDownQueue, getProperties, getUpProtocol, getUpQueue, handleSpecialDownEvent, init, isTrace, isWarn, passDown, passUp, printStats, providedDownServices, providedUpServices, receiveDownEvent, receiveUpEvent, requiredDownServices, requiredUpServices, resetStats, setDownProtocol, setObserver, setPropertiesInternal, setProtocolStack, setTrace, setUpProtocol, setWarn, start, startDownHandler, startUpHandler, statsEnabled, stop, stopInternal, upThreadEnabled |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public PARTITIONER()
Method Detail |
public java.lang.String getName()
getName
in class Protocol
public boolean setProperties(java.util.Properties props)
Protocol
"loopback=false;unicast_inport=4444"
setProperties
in class Protocol
public void reset()
public void up(Event evt)
up
in class Protocol
public void down(Event evt)
down
in class Protocol
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