| /* |
| * Copyright 2014 Open Networking Laboratory |
| * |
| * 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.store.core.impl; |
| |
| import static org.apache.commons.lang3.concurrent.ConcurrentUtils.putIfAbsent; |
| |
| import com.google.common.collect.ImmutableSet; |
| import com.hazelcast.core.EntryEvent; |
| import com.hazelcast.core.EntryListener; |
| import com.hazelcast.core.IAtomicLong; |
| import com.hazelcast.core.MapEvent; |
| |
| import org.apache.felix.scr.annotations.Activate; |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Deactivate; |
| import org.apache.felix.scr.annotations.Service; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.core.ApplicationIdStore; |
| import org.onosproject.core.DefaultApplicationId; |
| import org.onosproject.store.hz.AbstractHazelcastStore; |
| import org.onosproject.store.hz.SMap; |
| import org.onosproject.store.serializers.KryoNamespaces; |
| import org.onosproject.store.serializers.KryoSerializer; |
| import org.onlab.util.KryoNamespace; |
| |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| /** |
| * Simple implementation of the application ID registry using in-memory |
| * structures. |
| */ |
| @Component(immediate = true) |
| @Service |
| public class DistributedApplicationIdStore |
| extends AbstractHazelcastStore<AppIdEvent, AppIdStoreDelegate> |
| implements ApplicationIdStore { |
| |
| protected IAtomicLong lastAppId; |
| protected SMap<String, DefaultApplicationId> appIdsByName; |
| |
| protected Map<Short, DefaultApplicationId> appIds = new ConcurrentHashMap<>(); |
| |
| private String listenerId; |
| |
| |
| @Override |
| @Activate |
| public void activate() { |
| super.activate(); |
| |
| this.serializer = new KryoSerializer() { |
| @Override |
| protected void setupKryoPool() { |
| serializerPool = KryoNamespace.newBuilder() |
| .register(KryoNamespaces.API) |
| .nextId(KryoNamespaces.BEGIN_USER_CUSTOM_ID) |
| .build(); |
| } |
| }; |
| |
| lastAppId = theInstance.getAtomicLong("applicationId"); |
| |
| appIdsByName = new SMap<>(theInstance.<byte[], byte[]>getMap("appIdsByName"), this.serializer); |
| listenerId = appIdsByName.addEntryListener((new RemoteAppIdEventHandler()), true); |
| |
| primeAppIds(); |
| |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| appIdsByName.removeEntryListener(listenerId); |
| log.info("Stopped"); |
| } |
| |
| @Override |
| public Set<ApplicationId> getAppIds() { |
| return ImmutableSet.<ApplicationId>copyOf(appIds.values()); |
| } |
| |
| @Override |
| public ApplicationId getAppId(Short id) { |
| ApplicationId appId = appIds.get(id); |
| if (appId == null) { |
| primeAppIds(); |
| } |
| return appId; |
| } |
| |
| private void primeAppIds() { |
| for (DefaultApplicationId appId : appIdsByName.values()) { |
| appIds.put(appId.id(), appId); |
| } |
| } |
| |
| @Override |
| public ApplicationId registerApplication(String name) { |
| DefaultApplicationId appId = appIdsByName.get(name); |
| if (appId == null) { |
| short id = (short) lastAppId.getAndIncrement(); |
| appId = putIfAbsent(appIdsByName, name, |
| new DefaultApplicationId(id, name)); |
| } |
| return appId; |
| } |
| |
| private class RemoteAppIdEventHandler implements EntryListener<String, DefaultApplicationId> { |
| @Override |
| public void entryAdded(EntryEvent<String, DefaultApplicationId> event) { |
| DefaultApplicationId appId = event.getValue(); |
| appIds.put(appId.id(), appId); |
| } |
| |
| @Override |
| public void entryRemoved(EntryEvent<String, DefaultApplicationId> event) { |
| } |
| |
| @Override |
| public void entryUpdated(EntryEvent<String, DefaultApplicationId> event) { |
| entryAdded(event); |
| } |
| |
| @Override |
| public void entryEvicted(EntryEvent<String, DefaultApplicationId> event) { |
| } |
| |
| @Override |
| public void mapEvicted(MapEvent event) { |
| } |
| |
| @Override |
| public void mapCleared(MapEvent event) { |
| } |
| } |
| } |