@Override
public void handle(CoordinatorMessage event) {
System.err.println(
"[ELECTION::"
+ self.getPeerId()
+ "] I got a coordinator message from "
+ event.getPeerSource().getPeerId()
+ " the leader is "
+ event.getLeader().getPeerId()
+ "!");
CancelTimeout ct = new CancelTimeout(timeoutId);
trigger(ct, timerPort);
leader = event.getLeader();
electionGroup = event.getElectionGroup();
electing = false;
if (self.getPeerId().compareTo(leader.getPeerId()) != 0) {
ScheduleTimeout heartbeatTimeout = new ScheduleTimeout(JRConfig.HEARTBEAT_TIMEOUT);
heartbeatTimeout.setTimeoutEvent(new HeartbeatTimeout(heartbeatTimeout));
trigger(heartbeatTimeout, timerPort);
}
Stats.reportElectionMessages();
Stats.reportLeader(leader);
}
@Override
public void handle(ThinkLeaderMessage event) {
if (!electing) {
electing = true;
leader = null;
ArrayList<PeerAddress> electionGroup = event.getElectionGroup();
System.err.println(
"[ELECTION::" + self.getPeerId() + "] I got a THINK_LEADER message!");
if (self.getPeerId().equals(minimumUtility(electionGroup))) {
System.err.println(
"[ELECTION::"
+ self.getPeerId()
+ "] I am eligible to start the election! ("
+ minimumUtility(electionGroup)
+ ")");
for (PeerAddress peer : electionGroup) {
if (!self.getPeerId().equals(peer.getPeerId())) {
trigger(new ElectionMessage(self, peer, electionGroup), networkPort);
}
}
Stats.registerElectionMessages(electionGroup.size());
ScheduleTimeout st = new ScheduleTimeout(JRConfig.BULLY_TIMEOUT);
st.setTimeoutEvent(new ElectionTimeout(st, electionGroup));
timeoutId = st.getTimeoutEvent().getTimeoutId();
trigger(st, timerPort);
}
}
}
public void handle(Pp2pSend event) {
Address destination = event.getDestination();
if (destination.equals(self)) {
// deliver locally
Pp2pDeliver deliverEvent = event.getDeliverEvent();
trigger(deliverEvent, pp2p);
return;
}
long latency;
try {
latency = topology.getLatencyMs(self, destination);
} catch (NoLinkException e) {
// there is no link to the destination, we drop the message
return;
}
// make a DelayLinkMessage to be delivered at the destination
DelayLinkMessage message =
new DelayLinkMessage(self, destination, event.getDeliverEvent());
if (latency > 0) {
// delay the sending according to the latency
ScheduleTimeout st = new ScheduleTimeout(latency);
st.setTimeoutEvent(new DelayedMessage(st, message));
trigger(st, timer);
} else {
// send immediately
trigger(message, network);
}
}
@Override
public void handle(LeaderDeadMessage event) {
electing = true;
if (tmanPartners.contains(leader)) {
tmanPartners.remove(leader);
}
leader = null;
CancelTimeout ct = new CancelTimeout(heartbeatTimeoutId);
trigger(ct, timerPort);
ArrayList<PeerAddress> electionGroup = event.getElectionGroup();
System.err.println("[ELECTION::" + self.getPeerId() + "] I got a LEADER_DEAD message!");
if (self.getPeerId().equals(minimumUtility(electionGroup))) {
System.err.println(
"[ELECTION::"
+ self.getPeerId()
+ "] I am eligible to start the election! ("
+ minimumUtility(electionGroup)
+ ")");
for (PeerAddress peer : electionGroup) {
if (!self.getPeerId().equals(peer.getPeerId())) {
trigger(new ElectionMessage(self, peer, electionGroup), networkPort);
}
}
Stats.registerElectionMessages(electionGroup.size());
ScheduleTimeout st = new ScheduleTimeout(JRConfig.BULLY_TIMEOUT);
st.setTimeoutEvent(new ElectionTimeout(st, electionGroup));
timeoutId = st.getTimeoutEvent().getTimeoutId();
trigger(st, timerPort);
}
}
private void doSleep(long delay) {
logger.info("Sleeping {} milliseconds...", delay);
ScheduleTimeout st = new ScheduleTimeout(delay);
st.setTimeoutEvent(new ApplicationContinue(st));
trigger(st, timer);
blocking = true;
}
/**
* executing a task means allocate the resources for TimeToHoldResources.
*
* <p>This is the only time that TimeToHoldResources is used (since in theory is not known a
* priori, but we need it to simulate the "execution" of the task
*
* @param t
*/
private void runTask(Task t) {
t.allocate();
log.debug(
"{} RUNNING {} ({}/{}) AFTER {} QUEUE TIME ",
new Object[] {getId(), t.id, res.numFreeCpus, res.freeMemInMbs, t.getQueueTime()});
ScheduleTimeout tout = new ScheduleTimeout(t.timeToHoldResource);
tout.setTimeoutEvent(new TaskDone(tout, t.id));
trigger(tout, timerPort);
}
/*
* Launch an election: ask my neighbors if they agree
*/
public void launchElection() {
// Ask all tman neighbours if I can be the leader
for (Address dest : tmanNeighbours) {
trigger(new LeaderMsg.Apply(self, dest), networkPort);
}
expectedElectors = tmanNeighbours;
ScheduleTimeout rst = new ScheduleTimeout(config_timeout_election);
rst.setTimeoutEvent(new ElectionTimeout(rst));
trigger(rst, timerPort);
}
private void scheduleShuffleTimeout(NatedAddress dest) {
if (shuffleTimeoutId != null) {
log.warn("{} double starting shuffle timeout", logPrefix);
return;
}
ScheduleTimeout spt = new ScheduleTimeout(croupierConfig.shufflePeriod / 2);
ShuffleTimeout sc = new ShuffleTimeout(spt, dest);
spt.setTimeoutEvent(sc);
shuffleTimeoutId = sc.getTimeoutId();
trigger(spt, timer);
}
@Override
public void handle(HeartbeatLeaderResponse event) {
if (leader != null) {
// System.err.println("[HEARTBEAT::" + self.getPeerId() + "] I got a
// leader heartbeat response!");
CancelTimeout ct = new CancelTimeout(heartbeatTimeoutId);
trigger(ct, timerPort);
ScheduleTimeout heartbeatTimeout = new ScheduleTimeout(JRConfig.HEARTBEAT_TIMEOUT);
heartbeatTimeout.setTimeoutEvent(new HeartbeatTimeout(heartbeatTimeout));
trigger(heartbeatTimeout, timerPort);
}
}
@Override
public void handle(HeartbeatTimeout event) {
if (leader != null) {
// System.err.println("[HEARTBEAT::" + self.getPeerId() + "] I am sending
// a heartbeat to the leader (" + leader.getPeerId() + ") ");
trigger(new HeartbeatLeader(self, leader), networkPort);
ScheduleTimeout st = new ScheduleTimeout(JRConfig.HEARTBEAT_TIMEOUT);
st.setTimeoutEvent(new HeartbeatLeaderTimeout(st));
heartbeatTimeoutId = st.getTimeoutEvent().getTimeoutId();
trigger(st, timerPort);
}
}
/*
* Ask for leader and best peers to a peer and launch a timeout in case of the peer is offline
*/
void askInfos(Address peer) {
// A request is currently pending
if (currentRequests.containsKey(peer)) {
return;
}
trigger(new LeaderMsg.AskLeaderInfos(self, peer, oldLeader), networkPort);
ScheduleTimeout st = new ScheduleTimeout(config_timeout_info);
st.setTimeoutEvent(new LeaderInfosTimeout(st));
currentRequests.put(peer, st.getTimeoutEvent().getTimeoutId());
trigger(st, timerPort);
}
@Override
public void handle(OKMessage event) {
if (electing) {
System.err.println(
"[ELECTION::"
+ self.getPeerId()
+ "] I got an OK message from "
+ event.getPeerSource().getPeerId()
+ "!");
CancelTimeout ct = new CancelTimeout(timeoutId);
trigger(ct, timerPort);
ScheduleTimeout st = new ScheduleTimeout(2 * JRConfig.BULLY_TIMEOUT);
st.setTimeoutEvent(new CoordinatorTimeout(st, event.getElectionGroup()));
timeoutId = st.getTimeoutEvent().getTimeoutId();
trigger(st, timerPort);
}
}
@Override
public void handle(CoordinatorTimeout event) {
if (electing) {
System.err.println("[ELECTION::" + self.getPeerId() + "] I got a coordinator timeout!");
ArrayList<PeerAddress> electionGroup = event.getElectionGroup();
for (PeerAddress peer : electionGroup) {
if (self.getPeerId().compareTo(peer.getPeerId()) == -1) {
trigger(new ElectionMessage(self, peer, electionGroup), networkPort);
Stats.registerElectionMessage();
ScheduleTimeout st = new ScheduleTimeout(JRConfig.BULLY_TIMEOUT);
st.setTimeoutEvent(new ElectionTimeout(st, electionGroup));
timeoutId = st.getTimeoutEvent().getTimeoutId();
trigger(st, timerPort);
}
}
}
}
/*
* Lauch requests for the leader and best peers to the best peers we know
*/
void launchRequests() {
// If the leader is still unknown and we have not exceeded our limit of concurrent requests.
while (currentLeader == null && currentRequests.size() <= config_max_requests) {
// Select a peer which may be contacted
Address peer = selectNextPeer();
if (peer != null) askInfos(peer);
else {
// we have no possibility to find a leader, so we wait some time and try again
if (currentRequests.isEmpty()) {
ScheduleTimeout rst = new ScheduleTimeout(config_delay_tryagain);
rst.setTimeoutEvent(new UpdateLeaderTimeout(rst));
trigger(rst, timerPort);
}
return;
}
}
}
@Override
public void handle(ElectionMessage event) {
if (electing) {
boolean sentElectionMessage = false;
System.err.println(
"[ELECTION::"
+ self.getPeerId()
+ "] I got an election message from "
+ event.getPeerSource().getPeerId()
+ "!");
BigInteger sender = event.getPeerSource().getPeerId();
if (sender.compareTo(self.getPeerId()) == -1) {
trigger(
new OKMessage(self, event.getPeerSource(), event.getElectionGroup()),
networkPort);
Stats.registerElectionMessage();
ArrayList<PeerAddress> electionGroup = event.getElectionGroup();
for (PeerAddress peer : electionGroup) {
if (self.getPeerId().compareTo(peer.getPeerId()) == -1) {
sentElectionMessage = true;
trigger(new ElectionMessage(self, peer, electionGroup), networkPort);
Stats.registerElectionMessage();
ScheduleTimeout st = new ScheduleTimeout(JRConfig.BULLY_TIMEOUT);
st.setTimeoutEvent(new ElectionTimeout(st, electionGroup));
timeoutId = st.getTimeoutEvent().getTimeoutId();
trigger(st, timerPort);
}
}
if (!sentElectionMessage) {
for (PeerAddress peer : electionGroup) {
trigger(new CoordinatorMessage(self, peer, electionGroup), networkPort);
}
Stats.registerElectionMessages(electionGroup.size());
}
}
}
}
private void setTimer(long delay) {
timeout = new ScheduleTimeout(delay);
timeout.setTimeoutEvent(new CheckTimeout(timeout));
trigger(timeout, timer);
}
