| /* |
| * Copyright 2018-present Open Networking Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.onosproject.portloadbalancer.app; |
| |
| import com.google.common.collect.ImmutableMap; |
| import com.google.common.collect.Sets; |
| import org.osgi.service.component.annotations.Activate; |
| import org.osgi.service.component.annotations.Component; |
| import org.osgi.service.component.annotations.Deactivate; |
| import org.osgi.service.component.annotations.Reference; |
| import org.osgi.service.component.annotations.ReferenceCardinality; |
| import org.onlab.util.KryoNamespace; |
| import org.onosproject.cluster.ClusterService; |
| import org.onosproject.cluster.LeadershipService; |
| import org.onosproject.cluster.NodeId; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.portloadbalancer.api.PortLoadBalancer; |
| import org.onosproject.portloadbalancer.api.PortLoadBalancerData; |
| import org.onosproject.portloadbalancer.api.PortLoadBalancerEvent; |
| import org.onosproject.portloadbalancer.api.PortLoadBalancerAdminService; |
| import org.onosproject.portloadbalancer.api.PortLoadBalancerId; |
| import org.onosproject.portloadbalancer.api.PortLoadBalancerListener; |
| import org.onosproject.portloadbalancer.api.PortLoadBalancerMode; |
| import org.onosproject.portloadbalancer.api.PortLoadBalancerService; |
| import org.onosproject.mastership.MastershipService; |
| import org.onosproject.net.DeviceId; |
| import org.onosproject.net.PortNumber; |
| import org.onosproject.net.device.DeviceEvent; |
| import org.onosproject.net.device.DeviceListener; |
| import org.onosproject.net.device.DeviceService; |
| import org.onosproject.net.flow.DefaultTrafficSelector; |
| import org.onosproject.net.flow.DefaultTrafficTreatment; |
| import org.onosproject.net.flow.TrafficSelector; |
| import org.onosproject.net.flow.TrafficTreatment; |
| import org.onosproject.net.flow.instructions.Instruction; |
| import org.onosproject.net.flow.instructions.Instructions; |
| import org.onosproject.net.flowobjective.DefaultNextObjective; |
| import org.onosproject.net.flowobjective.DefaultNextTreatment; |
| import org.onosproject.net.flowobjective.FlowObjectiveService; |
| import org.onosproject.net.flowobjective.NextObjective; |
| import org.onosproject.net.flowobjective.Objective; |
| import org.onosproject.net.flowobjective.ObjectiveContext; |
| import org.onosproject.net.flowobjective.ObjectiveError; |
| import org.onosproject.store.serializers.KryoNamespaces; |
| import org.onosproject.store.service.ConsistentMap; |
| import org.onosproject.store.service.MapEvent; |
| import org.onosproject.store.service.MapEventListener; |
| import org.onosproject.store.service.Serializer; |
| import org.onosproject.store.service.StorageService; |
| import org.onosproject.store.service.Versioned; |
| import org.slf4j.Logger; |
| |
| import java.util.Collection; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.ExecutorService; |
| import java.util.concurrent.Executors; |
| import java.util.stream.Collectors; |
| |
| import static org.onlab.util.Tools.groupedThreads; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| @Component( |
| immediate = true, |
| service = { PortLoadBalancerService.class, PortLoadBalancerAdminService.class } |
| ) |
| public class PortLoadBalancerManager implements PortLoadBalancerService, PortLoadBalancerAdminService { |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| private CoreService coreService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| private StorageService storageService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| private FlowObjectiveService flowObjService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| private MastershipService mastershipService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| private LeadershipService leadershipService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| private ClusterService clusterService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| private DeviceService deviceService; |
| |
| private static final Logger log = getLogger(PortLoadBalancerManager.class); |
| private static final String APP_NAME = "org.onosproject.portloadbalancer"; |
| |
| private ApplicationId appId; |
| private ConsistentMap<PortLoadBalancerId, PortLoadBalancer> portLoadBalancerStore; |
| private ConsistentMap<PortLoadBalancerId, Integer> portLoadBalancerNextStore; |
| // TODO Evaluate if ResourceService is a better option |
| private ConsistentMap<PortLoadBalancerId, ApplicationId> portLoadBalancerResStore; |
| private Set<PortLoadBalancerListener> listeners = Sets.newConcurrentHashSet(); |
| |
| private ExecutorService portLoadBalancerEventExecutor; |
| private ExecutorService portLoadBalancerProvExecutor; |
| private ExecutorService deviceEventExecutor; |
| |
| private MapEventListener<PortLoadBalancerId, PortLoadBalancer> portLoadBalancerStoreListener; |
| // TODO build CLI to view and clear the next store |
| private MapEventListener<PortLoadBalancerId, Integer> portLoadBalancerNextStoreListener; |
| private MapEventListener<PortLoadBalancerId, ApplicationId> portLoadBalancerResStoreListener; |
| private final DeviceListener deviceListener = new InternalDeviceListener(); |
| |
| @Activate |
| public void activate() { |
| appId = coreService.registerApplication(APP_NAME); |
| |
| portLoadBalancerEventExecutor = Executors.newSingleThreadExecutor( |
| groupedThreads("portloadbalancer-event", "%d", log)); |
| portLoadBalancerProvExecutor = Executors.newSingleThreadExecutor( |
| groupedThreads("portloadbalancer-prov", "%d", log)); |
| deviceEventExecutor = Executors.newSingleThreadScheduledExecutor( |
| groupedThreads("portloadbalancer-dev-event", "%d", log)); |
| portLoadBalancerStoreListener = new PortLoadBalancerStoreListener(); |
| portLoadBalancerNextStoreListener = new PortLoadBalancerNextStoreListener(); |
| portLoadBalancerResStoreListener = new PortLoadBalancerResStoreListener(); |
| |
| KryoNamespace serializer = KryoNamespace.newBuilder() |
| .register(KryoNamespaces.API) |
| .register(PortLoadBalancer.class) |
| .register(PortLoadBalancerId.class) |
| .register(PortLoadBalancerMode.class) |
| .build(); |
| portLoadBalancerStore = storageService.<PortLoadBalancerId, PortLoadBalancer>consistentMapBuilder() |
| .withName("onos-portloadbalancer-store") |
| .withRelaxedReadConsistency() |
| .withSerializer(Serializer.using(serializer)) |
| .build(); |
| portLoadBalancerStore.addListener(portLoadBalancerStoreListener); |
| portLoadBalancerNextStore = storageService.<PortLoadBalancerId, Integer>consistentMapBuilder() |
| .withName("onos-portloadbalancer-next-store") |
| .withRelaxedReadConsistency() |
| .withSerializer(Serializer.using(serializer)) |
| .build(); |
| portLoadBalancerNextStore.addListener(portLoadBalancerNextStoreListener); |
| portLoadBalancerResStore = storageService.<PortLoadBalancerId, ApplicationId>consistentMapBuilder() |
| .withName("onos-portloadbalancer-res-store") |
| .withRelaxedReadConsistency() |
| .withSerializer(Serializer.using(serializer)) |
| .build(); |
| portLoadBalancerResStore.addListener(portLoadBalancerResStoreListener); |
| |
| deviceService.addListener(deviceListener); |
| |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| portLoadBalancerStore.removeListener(portLoadBalancerStoreListener); |
| portLoadBalancerNextStore.removeListener(portLoadBalancerNextStoreListener); |
| |
| deviceService.removeListener(deviceListener); |
| |
| portLoadBalancerEventExecutor.shutdown(); |
| portLoadBalancerProvExecutor.shutdown(); |
| deviceEventExecutor.shutdown(); |
| |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public void addListener(PortLoadBalancerListener listener) { |
| listeners.add(listener); |
| } |
| |
| @Override |
| public void removeListener(PortLoadBalancerListener listener) { |
| listeners.remove(listener); |
| } |
| |
| @Override |
| public PortLoadBalancer createOrUpdate(PortLoadBalancerId portLoadBalancerId, Set<PortNumber> ports, |
| PortLoadBalancerMode mode) { |
| log.debug("Putting {} -> {} {} into port load balancer store", portLoadBalancerId, mode, ports); |
| return Versioned.valueOrNull(portLoadBalancerStore.put(portLoadBalancerId, |
| new PortLoadBalancer(portLoadBalancerId, ports, mode))); |
| } |
| |
| @Override |
| public PortLoadBalancer remove(PortLoadBalancerId portLoadBalancerId) { |
| ApplicationId reservation = Versioned.valueOrNull(portLoadBalancerResStore.get(portLoadBalancerId)); |
| // Remove only if it is not used - otherwise it is necessary to release first |
| if (reservation == null) { |
| log.debug("Removing {} from port load balancer store", portLoadBalancerId); |
| return Versioned.valueOrNull(portLoadBalancerStore.remove(portLoadBalancerId)); |
| } |
| log.warn("Removal {} from port load balancer store was not possible " + |
| "due to a previous reservation", portLoadBalancerId); |
| return null; |
| } |
| |
| @Override |
| public Map<PortLoadBalancerId, PortLoadBalancer> getPortLoadBalancers() { |
| return ImmutableMap.copyOf(portLoadBalancerStore.asJavaMap()); |
| } |
| |
| @Override |
| public PortLoadBalancer getPortLoadBalancer(PortLoadBalancerId portLoadBalancerId) { |
| return Versioned.valueOrNull(portLoadBalancerStore.get(portLoadBalancerId)); |
| } |
| |
| @Override |
| public Map<PortLoadBalancerId, Integer> getPortLoadBalancerNexts() { |
| return ImmutableMap.copyOf(portLoadBalancerNextStore.asJavaMap()); |
| } |
| |
| @Override |
| public int getPortLoadBalancerNext(PortLoadBalancerId portLoadBalancerId) { |
| return Versioned.valueOrNull(portLoadBalancerNextStore.get(portLoadBalancerId)); |
| } |
| |
| @Override |
| public boolean reserve(PortLoadBalancerId portLoadBalancerId, ApplicationId appId) { |
| // Check if the resource is available |
| ApplicationId reservation = Versioned.valueOrNull(portLoadBalancerResStore.get(portLoadBalancerId)); |
| PortLoadBalancer portLoadBalancer = Versioned.valueOrNull(portLoadBalancerStore.get(portLoadBalancerId)); |
| if (reservation == null && portLoadBalancer != null) { |
| log.debug("Reserving {} -> {} into port load balancer reservation store", portLoadBalancerId, appId); |
| return portLoadBalancerResStore.put(portLoadBalancerId, appId) == null; |
| } else if (reservation != null && reservation.equals(appId)) { |
| // App try to reserve the resource a second time |
| log.debug("Already reserved {} -> {} skip reservation", portLoadBalancerId, appId); |
| return true; |
| } |
| log.warn("Reservation failed {} -> {}", portLoadBalancerId, appId); |
| return false; |
| } |
| |
| @Override |
| public boolean release(PortLoadBalancerId portLoadBalancerId, ApplicationId appId) { |
| // Check if the resource is reserved |
| ApplicationId reservation = Versioned.valueOrNull(portLoadBalancerResStore.get(portLoadBalancerId)); |
| if (reservation != null && reservation.equals(appId)) { |
| log.debug("Removing {} -> {} from port load balancer reservation store", portLoadBalancerId, appId); |
| return portLoadBalancerResStore.remove(portLoadBalancerId) != null; |
| } |
| log.warn("Release failed {} -> {}", portLoadBalancerId, appId); |
| return false; |
| } |
| |
| @Override |
| public ApplicationId getReservation(PortLoadBalancerId portLoadBalancerId) { |
| return Versioned.valueOrNull(portLoadBalancerResStore.get(portLoadBalancerId)); |
| } |
| |
| @Override |
| public Map<PortLoadBalancerId, ApplicationId> getReservations() { |
| return portLoadBalancerResStore.asJavaMap(); |
| } |
| |
| private class PortLoadBalancerStoreListener implements MapEventListener<PortLoadBalancerId, PortLoadBalancer> { |
| public void event(MapEvent<PortLoadBalancerId, PortLoadBalancer> event) { |
| switch (event.type()) { |
| case INSERT: |
| log.debug("PortLoadBalancer {} insert new={}, old={}", event.key(), event.newValue(), |
| event.oldValue()); |
| post(new PortLoadBalancerEvent(PortLoadBalancerEvent.Type.ADDED, event.newValue().value().data(), |
| null)); |
| populatePortLoadBalancer(event.newValue().value()); |
| break; |
| case REMOVE: |
| log.debug("PortLoadBalancer {} remove new={}, old={}", event.key(), event.newValue(), |
| event.oldValue()); |
| post(new PortLoadBalancerEvent(PortLoadBalancerEvent.Type.REMOVED, null, |
| event.oldValue().value().data())); |
| revokePortLoadBalancer(event.oldValue().value()); |
| break; |
| case UPDATE: |
| log.debug("PortLoadBalancer {} update new={}, old={}", event.key(), event.newValue(), |
| event.oldValue()); |
| post(new PortLoadBalancerEvent(PortLoadBalancerEvent.Type.UPDATED, event.newValue().value().data(), |
| event.oldValue().value().data())); |
| updatePortLoadBalancer(event.newValue().value(), event.oldValue().value()); |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| |
| private class PortLoadBalancerNextStoreListener implements MapEventListener<PortLoadBalancerId, Integer> { |
| public void event(MapEvent<PortLoadBalancerId, Integer> event) { |
| switch (event.type()) { |
| case INSERT: |
| log.debug("PortLoadBalancer next {} insert new={}, old={}", event.key(), event.newValue(), |
| event.oldValue()); |
| break; |
| case REMOVE: |
| log.debug("PortLoadBalancer next {} remove new={}, old={}", event.key(), event.newValue(), |
| event.oldValue()); |
| break; |
| case UPDATE: |
| log.debug("PortLoadBalancer next {} update new={}, old={}", event.key(), event.newValue(), |
| event.oldValue()); |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| |
| private class PortLoadBalancerResStoreListener implements MapEventListener<PortLoadBalancerId, ApplicationId> { |
| public void event(MapEvent<PortLoadBalancerId, ApplicationId> event) { |
| switch (event.type()) { |
| case INSERT: |
| log.debug("PortLoadBalancer reservation {} insert new={}, old={}", event.key(), event.newValue(), |
| event.oldValue()); |
| break; |
| case REMOVE: |
| log.debug("PortLoadBalancer reservation {} remove new={}, old={}", event.key(), event.newValue(), |
| event.oldValue()); |
| break; |
| case UPDATE: |
| log.debug("PortLoadBalancer reservation {} update new={}, old={}", event.key(), event.newValue(), |
| event.oldValue()); |
| break; |
| default: |
| break; |
| } |
| } |
| } |
| |
| private class InternalDeviceListener implements DeviceListener { |
| // We want to manage only a subset of events and if we are the leader |
| @Override |
| public void event(DeviceEvent event) { |
| deviceEventExecutor.execute(() -> { |
| DeviceId deviceId = event.subject().id(); |
| if (!isLocalLeader(deviceId)) { |
| log.debug("Not the leader of {}. Skip event {}", deviceId, event); |
| return; |
| } |
| // Populate or revoke according to the device availability |
| if (deviceService.isAvailable(deviceId)) { |
| init(deviceId); |
| } else { |
| cleanup(deviceId); |
| } |
| }); |
| } |
| // Some events related to the devices are skipped |
| @Override |
| public boolean isRelevant(DeviceEvent event) { |
| return event.type() == DeviceEvent.Type.DEVICE_ADDED || |
| event.type() == DeviceEvent.Type.DEVICE_AVAILABILITY_CHANGED || |
| event.type() == DeviceEvent.Type.DEVICE_UPDATED; |
| } |
| } |
| |
| private void post(PortLoadBalancerEvent portLoadBalancerEvent) { |
| portLoadBalancerEventExecutor.execute(() -> { |
| for (PortLoadBalancerListener l : listeners) { |
| if (l.isRelevant(portLoadBalancerEvent)) { |
| l.event(portLoadBalancerEvent); |
| } |
| } |
| }); |
| } |
| |
| private void init(DeviceId deviceId) { |
| portLoadBalancerStore.entrySet().stream() |
| .filter(portLoadBalancerEntry -> portLoadBalancerEntry.getKey().deviceId().equals(deviceId)) |
| .forEach(portLoadBalancerEntry -> populatePortLoadBalancer(portLoadBalancerEntry.getValue().value())); |
| } |
| |
| private void cleanup(DeviceId deviceId) { |
| portLoadBalancerStore.entrySet().stream() |
| .filter(entry -> entry.getKey().deviceId().equals(deviceId)) |
| .forEach(entry -> portLoadBalancerNextStore.remove(entry.getKey())); |
| log.debug("{} is removed from portLoadBalancerNextStore", deviceId); |
| } |
| |
| private void populatePortLoadBalancer(PortLoadBalancer portLoadBalancer) { |
| DeviceId deviceId = portLoadBalancer.portLoadBalancerId().deviceId(); |
| if (!isLocalLeader(deviceId)) { |
| log.debug("Not the leader of {}. Skip populatePortLoadBalancer {}", deviceId, |
| portLoadBalancer.portLoadBalancerId()); |
| return; |
| } |
| |
| portLoadBalancerProvExecutor.execute(() -> { |
| Integer nextid = Versioned.valueOrNull(portLoadBalancerNextStore |
| .get(portLoadBalancer.portLoadBalancerId())); |
| if (nextid == null) { |
| // Build a new context and new next objective |
| PortLoadBalancerObjectiveContext context = |
| new PortLoadBalancerObjectiveContext(portLoadBalancer.portLoadBalancerId()); |
| NextObjective nextObj = nextObjBuilder(portLoadBalancer.portLoadBalancerId(), |
| portLoadBalancer.ports(), nextid).add(context); |
| // Finally submit, store, and register the resource |
| flowObjService.next(deviceId, nextObj); |
| portLoadBalancerNextStore.put(portLoadBalancer.portLoadBalancerId(), nextObj.id()); |
| } else { |
| log.info("NextObj for {} already exists. Skip populatePortLoadBalancer", |
| portLoadBalancer.portLoadBalancerId()); |
| } |
| }); |
| } |
| |
| private void revokePortLoadBalancer(PortLoadBalancer portLoadBalancer) { |
| DeviceId deviceId = portLoadBalancer.portLoadBalancerId().deviceId(); |
| if (!isLocalLeader(deviceId)) { |
| log.debug("Not the leader of {}. Skip revokePortLoadBalancer {}", deviceId, |
| portLoadBalancer.portLoadBalancerId()); |
| return; |
| } |
| |
| portLoadBalancerProvExecutor.execute(() -> { |
| Integer nextid = Versioned.valueOrNull(portLoadBalancerNextStore.get(portLoadBalancer |
| .portLoadBalancerId())); |
| if (nextid != null) { |
| // Build a new context and remove old next objective |
| PortLoadBalancerObjectiveContext context = |
| new PortLoadBalancerObjectiveContext(portLoadBalancer.portLoadBalancerId()); |
| NextObjective nextObj = nextObjBuilder(portLoadBalancer.portLoadBalancerId(), portLoadBalancer.ports(), |
| nextid).remove(context); |
| // Finally submit and invalidate the store |
| flowObjService.next(deviceId, nextObj); |
| portLoadBalancerNextStore.remove(portLoadBalancer.portLoadBalancerId()); |
| } else { |
| log.info("NextObj for {} does not exist. Skip revokePortLoadBalancer", |
| portLoadBalancer.portLoadBalancerId()); |
| } |
| }); |
| } |
| |
| private void updatePortLoadBalancer(PortLoadBalancer newPortLoadBalancer, PortLoadBalancer oldPortLoadBalancer) { |
| DeviceId deviceId = newPortLoadBalancer.portLoadBalancerId().deviceId(); |
| if (!isLocalLeader(deviceId)) { |
| log.debug("Not the leader of {}. Skip updatePortLoadBalancer {}", deviceId, |
| newPortLoadBalancer.portLoadBalancerId()); |
| return; |
| } |
| |
| portLoadBalancerProvExecutor.execute(() -> { |
| Integer nextid = Versioned.valueOrNull(portLoadBalancerNextStore |
| .get(newPortLoadBalancer.portLoadBalancerId())); |
| if (nextid != null) { |
| // Compute modifications and context |
| PortLoadBalancerObjectiveContext context = |
| new PortLoadBalancerObjectiveContext(newPortLoadBalancer.portLoadBalancerId()); |
| Set<PortNumber> portsToBeAdded = |
| Sets.difference(newPortLoadBalancer.ports(), oldPortLoadBalancer.ports()); |
| Set<PortNumber> portsToBeRemoved = |
| Sets.difference(oldPortLoadBalancer.ports(), newPortLoadBalancer.ports()); |
| // and send them to the flowobj subsystem |
| if (!portsToBeAdded.isEmpty()) { |
| flowObjService.next(deviceId, nextObjBuilder(newPortLoadBalancer.portLoadBalancerId(), |
| portsToBeAdded, nextid) |
| .addToExisting(context)); |
| } else { |
| log.debug("NextObj for {} nothing to add", newPortLoadBalancer.portLoadBalancerId()); |
| |
| } |
| if (!portsToBeRemoved.isEmpty()) { |
| flowObjService.next(deviceId, nextObjBuilder(newPortLoadBalancer.portLoadBalancerId(), |
| portsToBeRemoved, nextid) |
| .removeFromExisting(context)); |
| } else { |
| log.debug("NextObj for {} nothing to remove", newPortLoadBalancer.portLoadBalancerId()); |
| } |
| } else { |
| log.info("NextObj for {} does not exist. Skip updatePortLoadBalancer", |
| newPortLoadBalancer.portLoadBalancerId()); |
| } |
| }); |
| } |
| |
| private NextObjective.Builder nextObjBuilder(PortLoadBalancerId portLoadBalancerId, Set<PortNumber> ports, |
| Integer nextId) { |
| if (nextId == null) { |
| nextId = flowObjService.allocateNextId(); |
| } |
| // This metadata is used to pass the key to the driver. |
| // Some driver, e.g. OF-DPA, will use that information while creating load balancing group. |
| // TODO This is not an actual LAG port. In the future, we should extend metadata structure to carry |
| // generic information. We should avoid using in_port in the metadata once generic metadata is available. |
| TrafficSelector meta = DefaultTrafficSelector.builder() |
| .matchInPort(PortNumber.portNumber(portLoadBalancerId.key())).build(); |
| NextObjective.Builder nextObjBuilder = DefaultNextObjective.builder() |
| .withId(nextId) |
| .withMeta(meta) |
| .withType(NextObjective.Type.HASHED) |
| .fromApp(appId); |
| ports.forEach(port -> { |
| TrafficTreatment treatment = DefaultTrafficTreatment.builder().setOutput(port).build(); |
| nextObjBuilder.addTreatment(DefaultNextTreatment.of(treatment)); |
| }); |
| return nextObjBuilder; |
| } |
| |
| // Custom-built function, when the device is not available we need a fallback mechanism |
| private boolean isLocalLeader(DeviceId deviceId) { |
| if (!mastershipService.isLocalMaster(deviceId)) { |
| // When the device is available we just check the mastership |
| if (deviceService.isAvailable(deviceId)) { |
| return false; |
| } |
| // Fallback with Leadership service - device id is used as topic |
| NodeId leader = leadershipService.runForLeadership( |
| deviceId.toString()).leaderNodeId(); |
| // Verify if this node is the leader |
| return clusterService.getLocalNode().id().equals(leader); |
| } |
| return true; |
| } |
| |
| private final class PortLoadBalancerObjectiveContext implements ObjectiveContext { |
| private final PortLoadBalancerId portLoadBalancerId; |
| |
| private PortLoadBalancerObjectiveContext(PortLoadBalancerId portLoadBalancerId) { |
| this.portLoadBalancerId = portLoadBalancerId; |
| } |
| |
| @Override |
| public void onSuccess(Objective objective) { |
| NextObjective nextObj = (NextObjective) objective; |
| log.debug("Successfully {} nextobj {} for port load balancer {}. NextObj={}", |
| nextObj.op(), nextObj.id(), portLoadBalancerId, nextObj); |
| portLoadBalancerProvExecutor.execute(() -> onSuccessHandler(nextObj, portLoadBalancerId)); |
| } |
| |
| @Override |
| public void onError(Objective objective, ObjectiveError error) { |
| NextObjective nextObj = (NextObjective) objective; |
| log.warn("Failed to {} nextobj {} for port load balancer {} due to {}. NextObj={}", |
| nextObj.op(), nextObj.id(), portLoadBalancerId, error, nextObj); |
| portLoadBalancerProvExecutor.execute(() -> onErrorHandler(nextObj, portLoadBalancerId)); |
| } |
| } |
| |
| private void onSuccessHandler(NextObjective nextObjective, PortLoadBalancerId portLoadBalancerId) { |
| // Operation done |
| PortLoadBalancerData oldPortLoadBalancerData = new PortLoadBalancerData(portLoadBalancerId); |
| PortLoadBalancerData newPortLoadBalancerData = new PortLoadBalancerData(portLoadBalancerId); |
| // Other operations will not lead to a generation of an event |
| switch (nextObjective.op()) { |
| case ADD: |
| newPortLoadBalancerData.setNextId(nextObjective.id()); |
| post(new PortLoadBalancerEvent(PortLoadBalancerEvent.Type.INSTALLED, newPortLoadBalancerData, |
| oldPortLoadBalancerData)); |
| break; |
| case REMOVE: |
| oldPortLoadBalancerData.setNextId(nextObjective.id()); |
| post(new PortLoadBalancerEvent(PortLoadBalancerEvent.Type.UNINSTALLED, newPortLoadBalancerData, |
| oldPortLoadBalancerData)); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| private void onErrorHandler(NextObjective nextObjective, PortLoadBalancerId portLoadBalancerId) { |
| // There was a failure |
| PortLoadBalancerData portLoadBalancerData = new PortLoadBalancerData(portLoadBalancerId); |
| // send FAILED event; |
| switch (nextObjective.op()) { |
| case ADD: |
| // If ADD is failing apps do not know the next id; let's update the store |
| portLoadBalancerNextStore.remove(portLoadBalancerId); |
| portLoadBalancerResStore.remove(portLoadBalancerId); |
| portLoadBalancerStore.remove(portLoadBalancerId); |
| post(new PortLoadBalancerEvent(PortLoadBalancerEvent.Type.FAILED, portLoadBalancerData, |
| portLoadBalancerData)); |
| break; |
| case ADD_TO_EXISTING: |
| // If ADD_TO_EXISTING is failing let's remove the failed ports |
| Collection<PortNumber> addedPorts = nextObjective.next().stream() |
| .flatMap(t -> t.allInstructions().stream()) |
| .filter(i -> i.type() == Instruction.Type.OUTPUT) |
| .map(i -> ((Instructions.OutputInstruction) i).port()) |
| .collect(Collectors.toList()); |
| portLoadBalancerStore.compute(portLoadBalancerId, (key, value) -> { |
| if (value != null && value.ports() != null && !value.ports().isEmpty()) { |
| value.ports().removeAll(addedPorts); |
| } |
| return value; |
| }); |
| portLoadBalancerData.setNextId(nextObjective.id()); |
| post(new PortLoadBalancerEvent(PortLoadBalancerEvent.Type.FAILED, portLoadBalancerData, |
| portLoadBalancerData)); |
| break; |
| case REMOVE_FROM_EXISTING: |
| // If REMOVE_TO_EXISTING is failing let's re-add the failed ports |
| Collection<PortNumber> removedPorts = nextObjective.next().stream() |
| .flatMap(t -> t.allInstructions().stream()) |
| .filter(i -> i.type() == Instruction.Type.OUTPUT) |
| .map(i -> ((Instructions.OutputInstruction) i).port()) |
| .collect(Collectors.toList()); |
| portLoadBalancerStore.compute(portLoadBalancerId, (key, value) -> { |
| if (value != null && value.ports() != null) { |
| value.ports().addAll(removedPorts); |
| } |
| return value; |
| }); |
| portLoadBalancerData.setNextId(nextObjective.id()); |
| post(new PortLoadBalancerEvent(PortLoadBalancerEvent.Type.FAILED, portLoadBalancerData, |
| portLoadBalancerData)); |
| break; |
| case VERIFY: |
| case REMOVE: |
| // If ADD/REMOVE_TO_EXISTING, REMOVE and VERIFY are failing let's send |
| // also the info about the next id |
| portLoadBalancerData.setNextId(nextObjective.id()); |
| post(new PortLoadBalancerEvent(PortLoadBalancerEvent.Type.FAILED, portLoadBalancerData, |
| portLoadBalancerData)); |
| break; |
| default: |
| break; |
| } |
| |
| } |
| } |