@Override
protected void execute() {
if (masterNode.isPresent()) {
ChordRoutingTable routingTable = (ChordRoutingTable) masterNode.getChordRoutingTable();
updatePredecessor = routingTable.getNextUpdatePredecessor();
log.debug(
"check predecessor node "
+ masterNode
+ " update pred = "
+ updatePredecessor
+ " simTime = "
+ Simulator.getCurrentTime() / Simulator.SECOND_UNIT);
msg = new RetrievePredecessorMsg(masterNode.getLocalOverlayContact(), updatePredecessor);
if (updatePredecessor.equals(masterNode.getLocalOverlayContact())) {
// catch exception that the first host has itself as predecessor
predOfPredecessor = routingTable.getPredecessor();
operationFinished(true);
((ChordRoutingTable) masterNode.getChordRoutingTable())
.updateDistantPredecessor(updatePredecessor, predOfPredecessor);
} else {
sendRetrievePredecessorMsg();
}
} else {
operationFinished(false);
}
}
private void checkResponsibility(
SkyNetID ownID, SkyNetID skyNetCoKey, BigDecimal left, BigDecimal right, int iter) {
skyNetNode.getSkyNetNodeInfo().setCoordinatorKey(skyNetCoKey);
log.info(
" The client "
+ skyNetNode.getSkyNetNodeInfo().toString()
+ " is responsible for the CoordinatorKey "
+ skyNetCoKey.getPlainSkyNetID()
+ " in the interval["
+ left.toPlainString()
+ ";"
+ right.toPlainString()
+ "] @ level "
+ iter);
ISkyNetMonitor monitor = (ISkyNetMonitor) Simulator.getMonitor();
ChurnStatisticsAnalyzer csAnalyzer =
(ChurnStatisticsAnalyzer) monitor.getConnectivityAnalyzer(ChurnStatisticsAnalyzer.class);
if (iter > 0) {
// complete the parentSkyNetNode Info
if (isRoot) {
log.warn(SkyNetUtilities.getTimeAndNetID(skyNetNode) + "lost the root-position");
csAnalyzer.lostRootPosition(skyNetNode);
skyNetNode.getMetricUpdateStrategy().setLastMetricSync(0);
}
skyNetNode.getSkyNetNodeInfo().setLevel(iter);
isRoot = false;
lookupParentCoordinator();
} else {
if (!isRoot) {
log.warn(SkyNetUtilities.getTimeAndNetID(skyNetNode) + "got the root-position");
csAnalyzer.gotRootPosition(skyNetNode);
skyNetNode.getMetricUpdateStrategy().setLastMetricSync(0);
}
skyNetNode.getSkyNetNodeInfo().setLevel(iter);
// Also set the observed level at this point
skyNetNode.getSkyNetNodeInfo().setObservedLevelFromRoot(0);
isRoot = true;
skyNetNode.getAttributeUpdateStrategy().resetOnlyAttributeUpdateStrategy();
skyNetNode.getMetricUpdateStrategy().sendNextDataUpdate();
}
}
public AbstractSkyNetMessage(
SkyNetNodeInfo senderNodeInfo,
SkyNetNodeInfo receiverNodeInfo,
long skyNetMsgID,
boolean ack,
boolean receiverSP,
boolean senderSP) {
timestamp = Simulator.getCurrentTime();
this.senderNodeInfo = senderNodeInfo;
this.receiverNodeInfo = receiverNodeInfo;
this.skyNetMsgID = skyNetMsgID;
this.ack = ack;
this.receiverSP = receiverSP;
this.senderSP = senderSP;
this.size =
Constants.LONG_SIZE
+ (SkyNetConstants.SKY_NET_NODE_INFO_SIZE) * 2
+ Constants.LONG_SIZE
+ 3 * Constants.BOOLEAN_SIZE;
}