@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);
}
}
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;
}
