| /* |
| * Copyright 2021-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.kubevirtnetworking.impl; |
| |
| import com.google.common.collect.ImmutableSet; |
| import org.onlab.packet.IpAddress; |
| import org.onlab.util.KryoNamespace; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.kubevirtnetworking.api.DefaultKubevirtLoadBalancer; |
| import org.onosproject.kubevirtnetworking.api.DefaultKubevirtLoadBalancerRule; |
| import org.onosproject.kubevirtnetworking.api.KubevirtLoadBalancer; |
| import org.onosproject.kubevirtnetworking.api.KubevirtLoadBalancerEvent; |
| import org.onosproject.kubevirtnetworking.api.KubevirtLoadBalancerRule; |
| import org.onosproject.kubevirtnetworking.api.KubevirtLoadBalancerStore; |
| import org.onosproject.kubevirtnetworking.api.KubevirtLoadBalancerStoreDelegate; |
| import org.onosproject.store.AbstractStore; |
| 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.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.slf4j.Logger; |
| |
| import java.util.Collection; |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.concurrent.ExecutorService; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import static java.util.concurrent.Executors.newSingleThreadExecutor; |
| import static org.onlab.util.Tools.groupedThreads; |
| import static org.onosproject.kubevirtnetworking.api.KubevirtLoadBalancerEvent.Type.KUBEVIRT_LOAD_BALANCER_CREATED; |
| import static org.onosproject.kubevirtnetworking.api.KubevirtLoadBalancerEvent.Type.KUBEVIRT_LOAD_BALANCER_MEMBER_ADDED; |
| import static org.onosproject.kubevirtnetworking.api.KubevirtLoadBalancerEvent.Type.KUBEVIRT_LOAD_BALANCER_MEMBER_REMOVED; |
| import static org.onosproject.kubevirtnetworking.api.KubevirtLoadBalancerEvent.Type.KUBEVIRT_LOAD_BALANCER_REMOVED; |
| import static org.onosproject.kubevirtnetworking.api.KubevirtLoadBalancerEvent.Type.KUBEVIRT_LOAD_BALANCER_UPDATED; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Implementation of kubevirt load balancer store using consistent map. |
| */ |
| @Component(immediate = true, service = KubevirtLoadBalancerStore.class) |
| public class DistributedKubevirtLoadBalancerStore |
| extends AbstractStore<KubevirtLoadBalancerEvent, KubevirtLoadBalancerStoreDelegate> |
| implements KubevirtLoadBalancerStore { |
| |
| private final Logger log = getLogger(getClass()); |
| |
| private static final String ERR_NOT_FOUND = " does not exist"; |
| private static final String ERR_DUPLICATE = " already exists"; |
| |
| private static final String APP_ID = "org.onosproject.kubevirtnetwork"; |
| |
| private static final KryoNamespace |
| SERIALIZER_KUBEVIRT_LOAD_BALANCER = KryoNamespace.newBuilder() |
| .register(KryoNamespaces.API) |
| .register(KubevirtLoadBalancer.class) |
| .register(DefaultKubevirtLoadBalancer.class) |
| .register(KubevirtLoadBalancerRule.class) |
| .register(DefaultKubevirtLoadBalancerRule.class) |
| .register(Collection.class) |
| .build(); |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected CoreService coreService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected StorageService storageService; |
| |
| private final ExecutorService eventExecutor = newSingleThreadExecutor( |
| groupedThreads(this.getClass().getSimpleName(), "event-handler", log)); |
| |
| private final MapEventListener<String, KubevirtLoadBalancer> loadBalancerMapListener = |
| new KubevirtLoadBalancerMapListener(); |
| |
| private ConsistentMap<String, KubevirtLoadBalancer> loadBalancerStore; |
| |
| @Activate |
| protected void activate() { |
| ApplicationId appId = coreService.registerApplication(APP_ID); |
| loadBalancerStore = storageService.<String, KubevirtLoadBalancer>consistentMapBuilder() |
| .withSerializer(Serializer.using(SERIALIZER_KUBEVIRT_LOAD_BALANCER)) |
| .withName("kubevirt-loadbalancerstore") |
| .withApplicationId(appId) |
| .build(); |
| loadBalancerStore.addListener(loadBalancerMapListener); |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| protected void deactivate() { |
| loadBalancerStore.removeListener(loadBalancerMapListener); |
| eventExecutor.shutdown(); |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public void createLoadBalancer(KubevirtLoadBalancer lb) { |
| loadBalancerStore.compute(lb.name(), (name, existing) -> { |
| final String error = lb.name() + ERR_DUPLICATE; |
| checkArgument(existing == null, error); |
| return lb; |
| }); |
| } |
| |
| @Override |
| public void updateLoadBalancer(KubevirtLoadBalancer lb) { |
| loadBalancerStore.compute(lb.name(), (name, existing) -> { |
| final String error = lb.name() + ERR_NOT_FOUND; |
| checkArgument(existing != null, error); |
| return lb; |
| }); |
| } |
| |
| @Override |
| public KubevirtLoadBalancer removeLoadBalancer(String name) { |
| Versioned<KubevirtLoadBalancer> lb = loadBalancerStore.remove(name); |
| if (lb == null) { |
| final String error = name + ERR_NOT_FOUND; |
| throw new IllegalArgumentException(error); |
| } |
| return lb.value(); |
| } |
| |
| @Override |
| public KubevirtLoadBalancer loadBalancer(String name) { |
| return loadBalancerStore.asJavaMap().get(name); |
| } |
| |
| @Override |
| public Set<KubevirtLoadBalancer> loadBalancers() { |
| return ImmutableSet.copyOf(loadBalancerStore.asJavaMap().values()); |
| } |
| |
| @Override |
| public void clear() { |
| loadBalancerStore.clear(); |
| } |
| |
| private class KubevirtLoadBalancerMapListener |
| implements MapEventListener<String, KubevirtLoadBalancer> { |
| |
| @Override |
| public void event(MapEvent<String, KubevirtLoadBalancer> event) { |
| switch (event.type()) { |
| case INSERT: |
| log.debug("Kubevirt load balancer created"); |
| eventExecutor.execute(() -> |
| notifyDelegate(new KubevirtLoadBalancerEvent( |
| KUBEVIRT_LOAD_BALANCER_CREATED, event.newValue().value()))); |
| break; |
| case UPDATE: |
| log.debug("Kubevirt load balancer updated"); |
| eventExecutor.execute(() -> processLoadBalancerMapUpdate(event)); |
| break; |
| case REMOVE: |
| log.debug("Kubevirt load balancer removed"); |
| eventExecutor.execute(() -> |
| notifyDelegate(new KubevirtLoadBalancerEvent( |
| KUBEVIRT_LOAD_BALANCER_REMOVED, event.oldValue().value()))); |
| break; |
| default: |
| // do nothing |
| break; |
| } |
| } |
| |
| private void processLoadBalancerMapUpdate(MapEvent<String, KubevirtLoadBalancer> event) { |
| KubevirtLoadBalancer oldLb = event.oldValue().value(); |
| KubevirtLoadBalancer newLb = event.newValue().value(); |
| |
| Set<IpAddress> added = new HashSet<>(newLb.members()); |
| Set<IpAddress> oldSet = oldLb.members(); |
| |
| added.removeAll(oldSet); |
| |
| if (added.size() > 0) { |
| notifyDelegate(new KubevirtLoadBalancerEvent( |
| KUBEVIRT_LOAD_BALANCER_MEMBER_ADDED, |
| newLb, |
| added |
| )); |
| } |
| |
| Set<IpAddress> removed = new HashSet<>(oldLb.members()); |
| Set<IpAddress> newSet = newLb.members(); |
| removed.removeAll(newSet); |
| |
| if (removed.size() > 0) { |
| notifyDelegate(new KubevirtLoadBalancerEvent( |
| KUBEVIRT_LOAD_BALANCER_MEMBER_REMOVED, |
| newLb, |
| removed |
| )); |
| } |
| |
| notifyDelegate(new KubevirtLoadBalancerEvent( |
| KUBEVIRT_LOAD_BALANCER_UPDATED, |
| newLb, |
| oldLb |
| )); |
| } |
| } |
| } |