@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);
}
@Override
public void storeBatch(FlowRuleBatchOperation operation) {
if (operation.getOperations().isEmpty()) {
notifyDelegate(
FlowRuleBatchEvent.completed(
new FlowRuleBatchRequest(operation.id(), Collections.emptySet()),
new CompletedBatchOperation(true, Collections.emptySet(), operation.deviceId())));
return;
}
DeviceId deviceId = operation.deviceId();
NodeId master = mastershipService.getMasterFor(deviceId);
if (master == null) {
log.warn("No master for {} : flows will be marked for removal", deviceId);
updateStoreInternal(operation);
notifyDelegate(
FlowRuleBatchEvent.completed(
new FlowRuleBatchRequest(operation.id(), Collections.emptySet()),
new CompletedBatchOperation(true, Collections.emptySet(), operation.deviceId())));
return;
}
if (Objects.equal(local, master)) {
storeBatchInternal(operation);
return;
}
log.trace(
"Forwarding storeBatch to {}, which is the primary (master) for device {}",
master,
deviceId);
clusterCommunicator
.unicast(operation, APPLY_BATCH_FLOWS, SERIALIZER::encode, master)
.whenComplete(
(result, error) -> {
if (error != null) {
log.warn("Failed to storeBatch: {} to {}", operation, master, error);
Set<FlowRule> allFailures =
operation
.getOperations()
.stream()
.map(op -> op.target())
.collect(Collectors.toSet());
notifyDelegate(
FlowRuleBatchEvent.completed(
new FlowRuleBatchRequest(operation.id(), Collections.emptySet()),
new CompletedBatchOperation(false, allFailures, deviceId)));
}
});
}
@Override
public FlowRuleEvent addOrUpdateFlowRule(FlowEntry rule) {
NodeId master = mastershipService.getMasterFor(rule.deviceId());
if (Objects.equal(local, master)) {
return addOrUpdateFlowRuleInternal(rule);
}
log.warn("Tried to update FlowRule {} state," + " while the Node was not the master.", rule);
return null;
}
@Override
public Iterable<TableStatisticsEntry> getTableStatistics(DeviceId deviceId) {
NodeId master = mastershipService.getMasterFor(deviceId);
if (master == null) {
log.debug("Failed to getTableStats: No master for {}", deviceId);
return Collections.emptyList();
}
List<TableStatisticsEntry> tableStats = deviceTableStats.get(deviceId);
if (tableStats == null) {
return Collections.emptyList();
}
return ImmutableList.copyOf(tableStats);
}
@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 void emit(OutboundPacket packet) {
NodeId myId = clusterService.getLocalNode().id();
NodeId master = mastershipService.getMasterFor(packet.sendThrough());
if (master == null) {
return;
}
if (myId.equals(master)) {
notifyDelegate(new PacketEvent(Type.EMIT, packet));
return;
}
communicationService
.unicast(packet, PACKET_OUT_SUBJECT, SERIALIZER::encode, master)
.whenComplete(
(r, error) -> {
if (error != null) {
log.warn("Failed to send packet-out to {}", master, error);
}
});
}
@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);
}