Class SIZE

java.lang.Object
org.jgroups.stack.Protocol
org.jgroups.protocols.SIZE
All Implemented Interfaces:
Lifecycle
public class SIZE extends Protocol
Protocol which lists how many messages have been received by size: https://issues.redhat.com/browse/JGRP-2893
Don't use this layer in a production stack since the costs are high; only use for debugging/diagnosis.
Author:
Bela Ban June 13 2001, Bela Ban June 2025

  • Field Details

  • Constructor Details

    • SIZE

      public SIZE()

  • Method Details

    • numDownSamples

      public long numDownSamples()

    • numUpSamples

      public long numUpSamples()

    • upMap

      public Map<Long, LongAdder> upMap()

    • downMap

      public Map<Long, LongAdder> downMap()

    • down

      public Object down(Message msg)
      Description copied from class: Protocol
      A message is sent down the stack. Protocols may examine the message and do something (e.g. add a header) with it, before passing it down.
      Overrides:
      down in class Protocol

    • up

      public Object up(Message msg)
      Description copied from class: Protocol
      A single message was received. Protocols may examine the message and do something (e.g. add a header) with it before passing it up.
      Overrides:
      up in class Protocol

    • up

      public void up(MessageBatch batch)
      Description copied from class: Protocol
      Sends up a multiple messages in a MessageBatch. The sender of the batch is always the same, and so is the destination (null == multicast messages). Messages in a batch can be OOB messages, regular messages, or mixed messages, although the transport itself will create initial MessageBatches that contain only either OOB or regular messages.

      The default processing below sends messages up the stack individually, based on a matching criteria (calling Protocol.accept(Message)), and - if true - calls Protocol.up(org.jgroups.Event) for that message and removes the message. If the batch is not empty, it is passed up, or else it is dropped.

      Subclasses should check if there are any messages destined for them (e.g. using MessageBatch.iterator(Predicate)), then possibly remove and process them and finally pass the batch up to the next protocol. Protocols can also modify messages in place, e.g. ENCRYPT could decrypt all encrypted messages in the batch, not remove them, and pass the batch up when done.

      Overrides:
      up in class Protocol
      Parameters:
      batch - The message batch

    • clear

      public void clear()

    • dumpDownSamples

      public String dumpDownSamples()

    • dumpUpSamples

      public String dumpUpSamples()

    • dump

      public String dump()

    • resetStats

      public void resetStats()
      Overrides:
      resetStats in class Protocol

    • addSample

      protected static void addSample(long size, Map<Long, LongAdder> map)

    • count

      protected static long count(Map<Long, LongAdder> m)

    • _dump

      protected static String _dump(Map<Long, LongAdder> m)