protected void updatePredecessorsFor(Host host) {
NetID pre = getOverlayPredecessor(host);
EdgeHandle old_pre = predecessors.get(host);
// log.debug("PREDECESSORS: " + pre + "|" + ((old_pre !=
// null)?old_pre.getTo():"null"));
if (pre == null) {
if (old_pre != null) {
old_pre.remove();
}
} else if (old_pre == null || !pre.equals(old_pre.getTo())) {
if (old_pre != null) {
old_pre.remove();
}
EdgeHandle newEdge = this.addEdge(netID(host), pre, Color.CYAN, "predecessor");
predecessors.put(host, newEdge);
}
}
@Override
protected void refreshFingertable(Host fromNode) {
AbstractChordRoutingTable crt =
((AbstractChordNode) fromNode.getOverlay(AbstractChordNode.class)).getChordRoutingTable();
if (crt == null) {
return;
}
AbstractChordContact[] ft = crt.copyFingerTable();
LinkedHashSet<AbstractChordContact> ft_set =
new LinkedHashSet<AbstractChordContact>(Arrays.asList(ft));
if (ft_set.contains(null)) {
ft_set.remove(null);
}
if (ft != null) {
Map<NetID, EdgeHandle> edgeHandles = fingerEdges.get(netID(fromNode));
if (edgeHandles == null) {
edgeHandles = new LinkedHashMap<NetID, EdgeHandle>();
fingerEdges.put(netID(fromNode), edgeHandles);
}
Set<NetID> vis_ft = fingertables.get(netID(fromNode));
if (vis_ft == null) {
vis_ft = new LinkedHashSet<NetID>();
fingertables.put(netID(fromNode), vis_ft);
}
boolean ft_changed = false;
// add new edges
for (AbstractChordContact con : ft_set) {
NetID newNetID = con.getTransInfo().getNetId();
if (con != null && !vis_ft.contains(newNetID)) {
EdgeHandle h = this.addEdge(netID(fromNode), newNetID, Color.LIGHT_GRAY, "finger");
edgeHandles.put(newNetID, h);
vis_ft.add(newNetID);
ft_changed = true;
}
}
// remove unused edges:
if (vis_ft != null) {
for (NetID nId : vis_ft) {
boolean inUse = false;
for (AbstractChordContact con : ft_set) {
if (con.getTransInfo().getNetId().toString().equals(nId.toString())) {
inUse = true;
break;
}
}
if (!inUse && edgeHandles.containsKey(nId)) {
// remove edge.
edgeHandles.get(nId).remove();
edgeHandles.remove(nId);
}
}
}
if (ft_changed) {
this.getTranslator()
.nodeAttributeChanged(fromNode.getNetLayer().getNetID(), "ft_hosts", ft_set.size());
}
}
}
