| /* |
| * 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.base.Strings; |
| import com.google.common.collect.ImmutableSet; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.CoreService; |
| import org.onosproject.event.ListenerRegistry; |
| import org.onosproject.kubevirtnetworking.api.KubevirtLoadBalancer; |
| import org.onosproject.kubevirtnetworking.api.KubevirtLoadBalancerAdminService; |
| import org.onosproject.kubevirtnetworking.api.KubevirtLoadBalancerEvent; |
| import org.onosproject.kubevirtnetworking.api.KubevirtLoadBalancerListener; |
| import org.onosproject.kubevirtnetworking.api.KubevirtLoadBalancerService; |
| import org.onosproject.kubevirtnetworking.api.KubevirtLoadBalancerStore; |
| import org.onosproject.kubevirtnetworking.api.KubevirtLoadBalancerStoreDelegate; |
| 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.Set; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import static com.google.common.base.Preconditions.checkNotNull; |
| import static org.onosproject.kubevirtnetworking.api.Constants.KUBEVIRT_NETWORKING_APP_ID; |
| import static org.slf4j.LoggerFactory.getLogger; |
| |
| /** |
| * Provides implementation of administering and interfacing kubevirt load balancer. |
| */ |
| @Component( |
| immediate = true, |
| service = {KubevirtLoadBalancerAdminService.class, KubevirtLoadBalancerService.class} |
| ) |
| public class KubevirtLoadBalancerManager |
| extends ListenerRegistry<KubevirtLoadBalancerEvent, KubevirtLoadBalancerListener> |
| implements KubevirtLoadBalancerAdminService, KubevirtLoadBalancerService { |
| |
| protected final Logger log = getLogger(getClass()); |
| |
| private static final String MSG_LOAD_BALANCER = "Kubevirt load balancer %s %s"; |
| private static final String MSG_CREATED = "created"; |
| private static final String MSG_UPDATED = "updated"; |
| private static final String MSG_REMOVED = "removed"; |
| |
| private static final String ERR_NULL_LOAD_BALANCER = "Kubevirt load balancer cannot be null"; |
| private static final String ERR_NULL_LOAD_BALANCER_NAME = "Kubevirt load balancer name cannot be null"; |
| private static final String ERR_IN_USE = " still in use"; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected CoreService coreService; |
| |
| @Reference(cardinality = ReferenceCardinality.MANDATORY) |
| protected KubevirtLoadBalancerStore kubevirtLoadBalancerStore; |
| |
| private final InternalKubevirtLoadBalancerStorageDelegate delegate = |
| new InternalKubevirtLoadBalancerStorageDelegate(); |
| |
| private ApplicationId appId; |
| |
| @Activate |
| protected void activate() { |
| appId = coreService.registerApplication(KUBEVIRT_NETWORKING_APP_ID); |
| |
| kubevirtLoadBalancerStore.setDelegate(delegate); |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| protected void deactivate() { |
| kubevirtLoadBalancerStore.unsetDelegate(delegate); |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public void createLoadBalancer(KubevirtLoadBalancer lb) { |
| checkNotNull(lb, ERR_NULL_LOAD_BALANCER); |
| checkArgument(!Strings.isNullOrEmpty(lb.name()), ERR_NULL_LOAD_BALANCER_NAME); |
| |
| kubevirtLoadBalancerStore.createLoadBalancer(lb); |
| log.info(String.format(MSG_LOAD_BALANCER, lb.name(), MSG_CREATED)); |
| } |
| |
| @Override |
| public void updateLoadBalancer(KubevirtLoadBalancer lb) { |
| checkNotNull(lb, ERR_NULL_LOAD_BALANCER); |
| checkArgument(!Strings.isNullOrEmpty(lb.name()), ERR_NULL_LOAD_BALANCER_NAME); |
| |
| kubevirtLoadBalancerStore.updateLoadBalancer(lb); |
| log.info(String.format(MSG_LOAD_BALANCER, lb.name(), MSG_UPDATED)); |
| } |
| |
| @Override |
| public void removeLoadBalancer(String name) { |
| checkArgument(name != null, ERR_NULL_LOAD_BALANCER_NAME); |
| synchronized (this) { |
| if (isLoadBalancerInUse(name)) { |
| final String error = String.format(MSG_LOAD_BALANCER, name, ERR_IN_USE); |
| throw new IllegalStateException(error); |
| } |
| } |
| |
| KubevirtLoadBalancer lb = kubevirtLoadBalancerStore.removeLoadBalancer(name); |
| if (lb != null) { |
| log.info(String.format(MSG_LOAD_BALANCER, lb.name(), MSG_REMOVED)); |
| } |
| } |
| |
| @Override |
| public void clear() { |
| kubevirtLoadBalancerStore.clear(); |
| } |
| |
| @Override |
| public KubevirtLoadBalancer loadBalancer(String name) { |
| checkArgument(name != null, ERR_NULL_LOAD_BALANCER_NAME); |
| return kubevirtLoadBalancerStore.loadBalancer(name); |
| } |
| |
| @Override |
| public Set<KubevirtLoadBalancer> loadBalancers() { |
| return ImmutableSet.copyOf(kubevirtLoadBalancerStore.loadBalancers()); |
| } |
| |
| private boolean isLoadBalancerInUse(String name) { |
| return false; |
| } |
| |
| private class InternalKubevirtLoadBalancerStorageDelegate |
| implements KubevirtLoadBalancerStoreDelegate { |
| |
| @Override |
| public void notify(KubevirtLoadBalancerEvent event) { |
| log.trace("send kubevirt load balancer event {}", event); |
| process(event); |
| } |
| } |
| } |