Thomas Vachuska | e0f804a | 2014-10-27 23:40:48 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
| 3 | * or more contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. The ASF licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
| 19 | package org.onlab.onos.store.core.impl; |
| 20 | |
| 21 | import com.google.common.collect.ImmutableSet; |
| 22 | import com.hazelcast.core.EntryEvent; |
| 23 | import com.hazelcast.core.EntryListener; |
| 24 | import com.hazelcast.core.IAtomicLong; |
| 25 | import com.hazelcast.core.MapEvent; |
| 26 | import org.apache.felix.scr.annotations.Activate; |
| 27 | import org.apache.felix.scr.annotations.Component; |
| 28 | import org.apache.felix.scr.annotations.Deactivate; |
| 29 | import org.apache.felix.scr.annotations.Service; |
| 30 | import org.onlab.onos.core.ApplicationId; |
| 31 | import org.onlab.onos.core.ApplicationIdStore; |
| 32 | import org.onlab.onos.core.DefaultApplicationId; |
| 33 | import org.onlab.onos.store.hz.AbstractHazelcastStore; |
| 34 | import org.onlab.onos.store.hz.SMap; |
| 35 | import org.onlab.onos.store.serializers.KryoNamespaces; |
| 36 | import org.onlab.onos.store.serializers.KryoSerializer; |
| 37 | import org.onlab.util.KryoNamespace; |
| 38 | |
| 39 | import java.util.Map; |
| 40 | import java.util.Set; |
| 41 | import java.util.concurrent.ConcurrentHashMap; |
| 42 | |
| 43 | /** |
| 44 | * Simple implementation of the application ID registry using in-memory |
| 45 | * structures. |
| 46 | */ |
| 47 | @Component(immediate = true) |
| 48 | @Service |
| 49 | public class DistributedApplicationIdStore |
| 50 | extends AbstractHazelcastStore<AppIdEvent, AppIdStoreDelegate> |
| 51 | implements ApplicationIdStore { |
| 52 | |
| 53 | protected IAtomicLong lastAppId; |
| 54 | protected SMap<String, DefaultApplicationId> appIdsByName; |
| 55 | |
| 56 | protected Map<Short, DefaultApplicationId> appIds = new ConcurrentHashMap<>(); |
| 57 | |
| 58 | |
| 59 | @Override |
| 60 | @Activate |
| 61 | public void activate() { |
| 62 | super.activate(); |
| 63 | |
| 64 | this.serializer = new KryoSerializer() { |
| 65 | @Override |
| 66 | protected void setupKryoPool() { |
| 67 | serializerPool = KryoNamespace.newBuilder() |
| 68 | .register(KryoNamespaces.API) |
| 69 | .build() |
| 70 | .populate(1); |
| 71 | } |
| 72 | }; |
| 73 | |
| 74 | lastAppId = theInstance.getAtomicLong("applicationId"); |
| 75 | |
| 76 | appIdsByName = new SMap<>(theInstance.<byte[], byte[]>getMap("appIdsByName"), this.serializer); |
| 77 | appIdsByName.addEntryListener((new RemoteAppIdEventHandler()), true); |
| 78 | |
| 79 | primeAppIds(); |
| 80 | |
| 81 | log.info("Started"); |
| 82 | } |
| 83 | |
| 84 | @Deactivate |
| 85 | public void deactivate() { |
| 86 | log.info("Stopped"); |
| 87 | } |
| 88 | |
| 89 | @Override |
| 90 | public Set<ApplicationId> getAppIds() { |
| 91 | return ImmutableSet.<ApplicationId>copyOf(appIds.values()); |
| 92 | } |
| 93 | |
| 94 | @Override |
| 95 | public ApplicationId getAppId(Short id) { |
| 96 | ApplicationId appId = appIds.get(id); |
| 97 | if (appId == null) { |
| 98 | primeAppIds(); |
| 99 | } |
| 100 | return appId; |
| 101 | } |
| 102 | |
| 103 | private synchronized void primeAppIds() { |
| 104 | for (DefaultApplicationId appId : appIdsByName.values()) { |
| 105 | appIds.put(appId.id(), appId); |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | @Override |
| 110 | public synchronized ApplicationId registerApplication(String name) { |
| 111 | DefaultApplicationId appId = appIdsByName.get(name); |
| 112 | if (appId == null) { |
| 113 | short id = (short) lastAppId.getAndIncrement(); |
| 114 | appId = new DefaultApplicationId(id, name); |
| 115 | appIds.put(id, appId); |
| 116 | appIdsByName.put(name, appId); |
| 117 | } |
| 118 | return appId; |
| 119 | } |
| 120 | |
| 121 | private class RemoteAppIdEventHandler implements EntryListener<String, DefaultApplicationId> { |
| 122 | @Override |
| 123 | public void entryAdded(EntryEvent<String, DefaultApplicationId> event) { |
| 124 | DefaultApplicationId appId = event.getValue(); |
| 125 | appIds.put(appId.id(), appId); |
| 126 | } |
| 127 | |
| 128 | @Override |
| 129 | public void entryRemoved(EntryEvent<String, DefaultApplicationId> event) { |
| 130 | } |
| 131 | |
| 132 | @Override |
| 133 | public void entryUpdated(EntryEvent<String, DefaultApplicationId> event) { |
| 134 | entryAdded(event); |
| 135 | } |
| 136 | |
| 137 | @Override |
| 138 | public void entryEvicted(EntryEvent<String, DefaultApplicationId> event) { |
| 139 | } |
| 140 | |
| 141 | @Override |
| 142 | public void mapEvicted(MapEvent event) { |
| 143 | } |
| 144 | |
| 145 | @Override |
| 146 | public void mapCleared(MapEvent event) { |
| 147 | } |
| 148 | } |
| 149 | } |