| /* |
| * Copyright 2015-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.store.trivial; |
| |
| import com.google.common.collect.ImmutableSet; |
| import org.apache.felix.scr.annotations.Component; |
| import org.apache.felix.scr.annotations.Service; |
| import org.onosproject.core.ApplicationId; |
| import org.onosproject.app.ApplicationIdStore; |
| import org.onosproject.core.DefaultApplicationId; |
| |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.atomic.AtomicInteger; |
| |
| /** |
| * Simple implementation of the application ID registry using in-memory |
| * structures. |
| */ |
| @Component(immediate = true) |
| @Service |
| public class SimpleApplicationIdStore implements ApplicationIdStore { |
| |
| private static final AtomicInteger ID_DISPENSER = new AtomicInteger(1); |
| |
| private final Map<Short, DefaultApplicationId> appIds = new ConcurrentHashMap<>(); |
| private final Map<String, DefaultApplicationId> appIdsByName = new ConcurrentHashMap<>(); |
| |
| @Override |
| public Set<ApplicationId> getAppIds() { |
| return ImmutableSet.copyOf(appIds.values()); |
| } |
| |
| @Override |
| public ApplicationId getAppId(Short id) { |
| return appIds.get(id); |
| } |
| |
| @Override |
| public ApplicationId getAppId(String name) { |
| return appIdsByName.get(name); |
| } |
| |
| @Override |
| public ApplicationId registerApplication(String name) { |
| DefaultApplicationId appId = appIdsByName.get(name); |
| if (appId == null) { |
| short id = (short) ID_DISPENSER.getAndIncrement(); |
| appId = new DefaultApplicationId(id, name); |
| appIds.put(id, appId); |
| appIdsByName.put(name, appId); |
| } |
| return appId; |
| } |
| |
| } |