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);
}
}
private void refreshRingEdgesForNetId(NetID netid, AbstractChordRoutingTable crt) {
if (crt == null) {
return;
}
AbstractChordContact[] ue = ((ChordRoutingTable) crt).getRingEdgesAsArray();
LinkedHashSet<AbstractChordContact> ue_set =
new LinkedHashSet<AbstractChordContact>(Arrays.asList(ue));
if (ue_set.contains(null)) {
ue_set.remove(null);
}
if (ue != null) {
Set<EdgeHandle> vis_ue = ringEdges.get(netid);
if (vis_ue == null) {
vis_ue = new LinkedHashSet<EdgeHandle>();
ringEdges.put(netid, vis_ue);
}
// delete all edges that do not exist nomore.
for (EdgeHandle h : vis_ue) {
if (h == null) {
continue;
}
boolean stillInUse = false;
for (AbstractChordContact con : ue_set) {
NetID newNetID;
if (((ChordContact) con).isRealNode()) {
newNetID = con.getTransInfo().getNetId();
} else {
newNetID = virtualNodes.get(con.getOverlayID());
}
if (h.getTo() == newNetID) {
stillInUse = true;
}
}
if (!stillInUse) {
h.remove();
}
}
// add all edges that are new
for (AbstractChordContact con : ue_set) {
NetID newNetID;
if (((ChordContact) con).isRealNode()) {
newNetID = con.getTransInfo().getNetId();
} else {
newNetID = virtualNodes.get(con.getOverlayID());
}
boolean inSet = false;
for (EdgeHandle h : vis_ue) {
if (h == null) {
continue;
}
if (newNetID == h.getTo()) {
inSet = true;
}
}
if (!inSet) {
EdgeHandle e = this.addEdge(netid, newNetID, Color.MAGENTA, "ringEdges");
vis_ue.add(e);
}
}
}
}