org.jgroups.protocols
Class PARTITIONER
public
class
PARTITIONER
extends Protocol
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.
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 |
String | getName() All protocol names have to be unique ! |
void | reset() Just remove if you don't need to reset any state |
boolean | setProperties(Properties props) |
void | up(Event evt)
Discards Messages with the wrong partition number and sets local partition number if
it receives a COMMAND Header |
public 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
public String getName()
All protocol names have to be unique !
public void reset()
Just remove if you don't need to reset any state
public boolean setProperties(Properties props)
public void up(
Event evt)
Discards Messages with the wrong partition number and sets local partition number if
it receives a COMMAND Header
Copyright ? 1998-2005 Bela Ban. All Rights Reserved.