Class PARTITION

java.lang.Object
org.jgroups.stack.Protocol
org.jgroups.protocols.PARTITION

public class PARTITION extends Protocol
Protocol to simulate a partition. This can be done in 2 ways: send down a PARTITION event (with a boolean flag on or off, to start or end a partition), or by grabbing a reference to the protocol via the ProtocolStack and calling the methods startPartition() or stopPartition() directly. This can also be done via JMX.

A partition simply discards all messages, but let's other events pass.

Version:
$Id: PARTITION.java,v 1.3 2007/08/27 11:05:32 belaban Exp $
Author:
Bela Ban
  • Field Details

    • partition_on

      protected boolean partition_on
    • local_address

      protected Address local_address
  • Constructor Details

    • PARTITION

      public PARTITION()
  • Method Details

    • getName

      public String getName()
      Specified by:
      getName in class Protocol
    • isPartitionOn

      public boolean isPartitionOn()
    • startPartition

      public void startPartition()
    • stopPartition

      public void stopPartition()
    • down

      public 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 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