How to use

getSender

method

in

org.jgroups.protocols.pbcast.MergeData

/** Removed rejected merge requests from merge_rsps and coords. This method has a lock on merge_rsps */
protected void removeRejectedMergeRequests(Collection<Address> coords) {
  int num_removed=0;
  for(Iterator<Map.Entry<Address,MergeData>> it=merge_rsps.getResults().entrySet().iterator(); it.hasNext();) {
    Map.Entry<Address,MergeData> entry=it.next();
    MergeData data=entry.getValue();
    if(data.merge_rejected) {
      if(data.getSender() != null)
        coords.remove(data.getSender());
      it.remove();
      num_removed++;
    }
  }
  if(num_removed > 0)
    log.trace("%s: removed %d rejected merge responses", gms.local_addr, num_removed);
}

public void handleMergeResponse(MergeData data, MergeId merge_id) {
  if(!matchMergeId(merge_id)) {
    log.trace("%s: this.merge_id (%s) is different from merge_id %s sent by %s as merge response, discarding it",
         gms.local_addr, this.merge_id, merge_id, data.getSender());
    return;
  }
  merge_rsps.add(data.getSender(), data);
}

/**
 * If merge_id is not equal to this.merge_id then discard. Else cast the view/digest to all members of this group.
 */
public void handleMergeView(final MergeData data, final MergeId merge_id) {
  if(!matchMergeId(merge_id)) {
    log.trace("%s: merge_ids (mine: %s, received: %s) don't match; merge view %s is discarded",
         gms.local_addr, this.merge_id, merge_id, data.view.getViewId());
    return;
  }
  // only send to our *current* members, if we have A and B being merged (we are B), then we would *not*
  // want to block on a VIEW_ACK from A because A doesn't see us in the pre-merge view yet and discards the view
  List<Address> expected_acks=gms.members.getMembers();
  try {
    gms.castViewChangeAndSendJoinRsps(data.view, data.digest, expected_acks, null, null);
    // if we have flush in stack send ack back to merge coordinator
    if(gms.flushProtocolInStack) { //[JGRP-700] - FLUSH: flushing should span merge
      Message ack=new Message(data.getSender()).setFlag(Message.Flag.OOB, Message.Flag.INTERNAL)
       .putHeader(gms.getId(), new GMS.GmsHeader(GMS.GmsHeader.INSTALL_MERGE_VIEW_OK));
      gms.getDownProtocol().down(ack);
    }
  }
  finally {
    cancelMerge(merge_id);
  }
}

/** Removed rejected merge requests from merge_rsps and coords */
private void removeRejectedMergeRequests(Vector coords) {
  MergeData data;
  for(Iterator it=merge_rsps.iterator(); it.hasNext();) {
    data=(MergeData)it.next();
    if(data.merge_rejected) {
      if(data.getSender() != null && coords != null)
        coords.removeElement(data.getSender());
      it.remove();
      if(log.isDebugEnabled()) log.debug("removed element " + data);
    }
  }
}

/** Removed rejected merge requests from merge_rsps and coords. This method has a lock on merge_rsps */
protected void removeRejectedMergeRequests(Collection<Address> coords) {
  int num_removed=0;
  for(Iterator<Map.Entry<Address,MergeData>> it=merge_rsps.getResults().entrySet().iterator(); it.hasNext();) {
    Map.Entry<Address,MergeData> entry=it.next();
    MergeData data=entry.getValue();
    if(data.merge_rejected) {
      if(data.getSender() != null)
        coords.remove(data.getSender());
      it.remove();
      num_removed++;
    }
  }
  if(num_removed > 0)
    log.trace("%s: removed %d rejected merge responses", gms.local_addr, num_removed);
}

public void handleMergeResponse(MergeData data, MergeId merge_id) {
  if(!matchMergeId(merge_id)) {
    log.trace("%s: this.merge_id (%s) is different from merge_id %s sent by %s as merge response, discarding it",
         gms.local_addr, this.merge_id, merge_id, data.getSender());
    return;
  }
  merge_rsps.add(data.getSender(), data);
}

    + this.merge_id
    + ") is null (sender="
    + data.getSender()
    + ").");
return;

/**
 * If merge_id is not equal to this.merge_id then discard. Else cast the view/digest to all members of this group.
 */
public void handleMergeView(final MergeData data, final MergeId merge_id) {
  if(!matchMergeId(merge_id)) {
    log.trace("%s: merge_ids (mine: %s, received: %s) don't match; merge view %s is discarded",
         gms.local_addr, this.merge_id, merge_id, data.view.getViewId());
    return;
  }
  // only send to our *current* members, if we have A and B being merged (we are B), then we would *not*
  // want to block on a VIEW_ACK from A because A doesn't see us in the pre-merge view yet and discards the view
  List<Address> expected_acks=gms.members.getMembers();
  try {
    gms.castViewChangeAndSendJoinRsps(data.view, data.digest, expected_acks, null, null);
    // if we have flush in stack send ack back to merge coordinator
    if(gms.flushProtocolInStack) { //[JGRP-700] - FLUSH: flushing should span merge
      Message ack=new Message(data.getSender()).setFlag(Message.Flag.OOB, Message.Flag.INTERNAL)
       .putHeader(gms.getId(), new GMS.GmsHeader(GMS.GmsHeader.INSTALL_MERGE_VIEW_OK));
      gms.getDownProtocol().down(ack);
    }
  }
  finally {
    cancelMerge(merge_id);
  }
}