| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.onlab.onos.store.core.impl; |
| |
| 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.onlab.onos.core.ApplicationId; |
| import org.onlab.onos.core.ApplicationIdStore; |
| import org.onlab.onos.core.DefaultApplicationId; |
| import org.onlab.onos.store.hz.AbstractHazelcastStore; |
| import org.onlab.onos.store.hz.SMap; |
| import org.onlab.onos.store.serializers.KryoNamespaces; |
| import org.onlab.onos.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<>(); |
| |
| |
| @Override |
| @Activate |
| public void activate() { |
| super.activate(); |
| |
| this.serializer = new KryoSerializer() { |
| @Override |
| protected void setupKryoPool() { |
| serializerPool = KryoNamespace.newBuilder() |
| .register(KryoNamespaces.API) |
| .build() |
| .populate(1); |
| } |
| }; |
| |
| lastAppId = theInstance.getAtomicLong("applicationId"); |
| |
| appIdsByName = new SMap<>(theInstance.<byte[], byte[]>getMap("appIdsByName"), this.serializer); |
| appIdsByName.addEntryListener((new RemoteAppIdEventHandler()), true); |
| |
| primeAppIds(); |
| |
| log.info("Started"); |
| } |
| |
| @Deactivate |
| public void deactivate() { |
| 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 synchronized void primeAppIds() { |
| for (DefaultApplicationId appId : appIdsByName.values()) { |
| appIds.put(appId.id(), appId); |
| } |
| } |
| |
| @Override |
| public synchronized ApplicationId registerApplication(String name) { |
| DefaultApplicationId appId = appIdsByName.get(name); |
| if (appId == null) { |
| short id = (short) lastAppId.getAndIncrement(); |
| appId = new DefaultApplicationId(id, name); |
| appIds.put(id, appId); |
| appIdsByName.put(name, appId); |
| } |
| 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) { |
| } |
| } |
| } |