/**
* Removed rejected merge requests from merge_rsps and coords. This method has a lock on
* merge_rsps
*/
private void removeRejectedMergeRequests(Collection<Address> coords) {
for (Map.Entry<Address, MergeData> entry : merge_rsps.getResults().entrySet()) {
Address member = entry.getKey();
MergeData data = entry.getValue();
if (data.merge_rejected) {
if (data.getSender() != null) coords.remove(data.getSender());
merge_rsps.remove(member);
}
}
}
/**
* 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)) {
if (log.isErrorEnabled())
log.error("merge_ids don't match (or are null); merge view discarded");
return;
}
// only send to our *current* members, if we have A and B being merged (we are B), then we would
// *not*
// receive a VIEW_ACK from A because A doesn't see us in the pre-merge view yet and discards the
// view
// [JGRP-700] - FLUSH: flushing should span merge
// we have to send new view only to current members and we should not wait
// for view acks from newly merged mebers
List<Address> newViewMembers = new Vector<Address>(data.view.getMembers());
newViewMembers.removeAll(gms.members.getMembers());
gms.castViewChangeWithDest(data.view, data.digest, null, newViewMembers);
// if we have flush in stack send ack back to merge coordinator
if (gms.flushProtocolInStack) {
Message ack = new Message(data.getSender(), null, null);
ack.setFlag(Message.OOB);
GMS.GmsHeader ack_hdr = new GMS.GmsHeader(GMS.GmsHeader.INSTALL_MERGE_VIEW_OK);
ack.putHeader(gms.getId(), ack_hdr);
gms.getDownProtocol().down(new Event(Event.MSG, ack));
}
cancelMerge(merge_id);
}
public void handleMergeResponse(MergeData data, MergeId merge_id) {
if (!matchMergeId(merge_id)) {
if (log.isTraceEnabled())
log.trace(
gms.local_addr
+ ": this.merge_id ("
+ this.merge_id
+ ") is different from merge_id "
+ merge_id
+ " sent by "
+ data.getSender()
+ " as merge response, discarding it");
return;
}
merge_rsps.add(data.getSender(), data);
}
/**
* Removed rejected merge requests from merge_rsps and coords. This method has a lock on
* merge_rsps
*/
private 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) {
if (log.isTraceEnabled())
log.trace(gms.local_addr + ": removed " + num_removed + " rejected merge responses");
}
}
public void handleMergeResponse(MergeData data, MergeId merge_id) {
if (!matchMergeId(merge_id)) {
if (log.isErrorEnabled())
log.error(
gms.local_addr
+ ": this.merge_id ("
+ this.merge_id
+ ") is different from merge_id ("
+ merge_id
+ ')');
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)) {
if (log.isTraceEnabled())
log.trace(
gms.local_addr
+ ": merge_ids (mine: "
+ this.merge_id
+ ", received: "
+ merge_id
+ ") don't match; merge view "
+ data.view.getViewId()
+ " is discarded");
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> newViewMembers = new ArrayList<Address>(data.view.getMembers());
newViewMembers.removeAll(gms.members.getMembers());
try {
gms.castViewChange(data.view, data.digest, null, newViewMembers);
// 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);
GMS.GmsHeader ack_hdr = new GMS.GmsHeader(GMS.GmsHeader.INSTALL_MERGE_VIEW_OK);
ack.putHeader(gms.getId(), ack_hdr);
gms.getDownProtocol().down(new Event(Event.MSG, ack));
}
} finally {
cancelMerge(merge_id);
}
}
