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/*
* Copyright 2014-2015 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.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.core.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.<ApplicationId>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;
}
}
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