@Override
public Iterable<FlowEntry> getFlowEntries(DeviceId deviceId) {
NodeId master = mastershipService.getMasterFor(deviceId);
if (master == null) {
log.debug("Failed to getFlowEntries: No master for {}", deviceId);
return Collections.emptyList();
}
if (Objects.equal(local, master)) {
return flowTable.getFlowEntries(deviceId);
}
log.trace(
"Forwarding getFlowEntries to {}, which is the primary (master) for device {}",
master,
deviceId);
return Tools.futureGetOrElse(
clusterCommunicator.sendAndReceive(
deviceId,
FlowStoreMessageSubjects.GET_DEVICE_FLOW_ENTRIES,
SERIALIZER::encode,
SERIALIZER::decode,
master),
FLOW_RULE_STORE_TIMEOUT_MILLIS,
TimeUnit.MILLISECONDS,
Collections.emptyList());
}
@Override
public FlowEntry getFlowEntry(FlowRule rule) {
NodeId master = mastershipService.getMasterFor(rule.deviceId());
if (master == null) {
log.debug("Failed to getFlowEntry: No master for {}", rule.deviceId());
return null;
}
if (Objects.equal(local, master)) {
return flowTable.getFlowEntry(rule);
}
log.trace(
"Forwarding getFlowEntry to {}, which is the primary (master) for device {}",
master,
rule.deviceId());
return Tools.futureGetOrElse(
clusterCommunicator.sendAndReceive(
rule,
FlowStoreMessageSubjects.GET_FLOW_ENTRY,
SERIALIZER::encode,
SERIALIZER::decode,
master),
FLOW_RULE_STORE_TIMEOUT_MILLIS,
TimeUnit.MILLISECONDS,
null);
}
private void sendAdvertisementToPeer(NodeId peer) {
long adCreationTime = System.currentTimeMillis();
AntiEntropyAdvertisement<K> ad = createAdvertisement();
clusterCommunicator
.sendAndReceive(
ad, antiEntropyAdvertisementSubject, serializer::encode, serializer::decode, peer)
.whenComplete(
(result, error) -> {
if (error != null) {
log.debug(
"Failed to send anti-entropy advertisement to {}: {}",
peer,
error.getMessage());
} else if (result == AntiEntropyResponse.PROCESSED) {
antiEntropyTimes.put(peer, adCreationTime);
}
});
}
@Override
public Set<FlowEntry> getPreviousFlowStatistic(ConnectPoint connectPoint) {
final DeviceId deviceId = connectPoint.deviceId();
NodeId master = mastershipService.getMasterFor(deviceId);
if (master == null) {
log.warn("No master for {}", deviceId);
return Collections.emptySet();
}
if (Objects.equal(local, master)) {
return getPreviousStatisticInternal(connectPoint);
} else {
return Tools.futureGetOrElse(
clusterCommunicator.sendAndReceive(
connectPoint, GET_PREVIOUS, SERIALIZER::encode, SERIALIZER::decode, master),
STATISTIC_STORE_TIMEOUT_MILLIS,
TimeUnit.MILLISECONDS,
Collections.emptySet());
}
}
@Override
public FlowRuleEvent removeFlowRule(FlowEntry rule) {
final DeviceId deviceId = rule.deviceId();
NodeId master = mastershipService.getMasterFor(deviceId);
if (Objects.equal(local, master)) {
// bypass and handle it locally
return removeFlowRuleInternal(rule);
}
if (master == null) {
log.warn("Failed to removeFlowRule: No master for {}", deviceId);
// TODO: revisit if this should be null (="no-op") or Exception
return null;
}
log.trace(
"Forwarding removeFlowRule to {}, which is the master for device {}", master, deviceId);
return Futures.get(
clusterCommunicator.sendAndReceive(
rule, REMOVE_FLOW_ENTRY, SERIALIZER::encode, SERIALIZER::decode, master),
FLOW_RULE_STORE_TIMEOUT_MILLIS,
TimeUnit.MILLISECONDS,
RuntimeException.class);
}