| /* |
| * Copyright 2016-present 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.incubator.store.virtual.impl; |
| |
| import com.google.common.collect.Maps; |
| import org.onosproject.event.Event; |
| import org.onosproject.incubator.net.virtual.NetworkId; |
| import org.onosproject.incubator.net.virtual.VirtualStore; |
| import org.onosproject.store.StoreDelegate; |
| |
| import java.util.List; |
| import java.util.Map; |
| |
| import static com.google.common.base.Preconditions.checkState; |
| |
| /** |
| * Base implementation of a virtual store. |
| */ |
| public class AbstractVirtualStore<E extends Event, D extends StoreDelegate<E>> |
| implements VirtualStore<E, D> { |
| |
| protected Map<NetworkId, D> delegateMap = Maps.newConcurrentMap(); |
| |
| @Override |
| public void setDelegate(NetworkId networkId, D delegate) { |
| checkState(delegateMap.get(networkId) == null |
| || delegateMap.get(networkId) == delegate, |
| "Store delegate already set"); |
| |
| delegateMap.putIfAbsent(networkId, delegate); |
| } |
| |
| @Override |
| public void unsetDelegate(NetworkId networkId, D delegate) { |
| if (delegateMap.get(networkId) == delegate) { |
| delegateMap.remove(networkId, delegate); |
| } |
| } |
| |
| @Override |
| public boolean hasDelegate(NetworkId networkId) { |
| return delegateMap.get(networkId) != null; |
| } |
| |
| /** |
| * Notifies the delegate with the specified event. |
| * |
| * @param networkId a virtual network identifier |
| * @param event event to delegate |
| */ |
| protected void notifyDelegate(NetworkId networkId, E event) { |
| if (delegateMap.get(networkId) != null) { |
| delegateMap.get(networkId).notify(event); |
| } |
| } |
| |
| /** |
| * Notifies the delegate with the specified list of events. |
| * |
| * @param networkId a virtual network identifier |
| * @param events list of events to delegate |
| */ |
| protected void notifyDelegate(NetworkId networkId, List<E> events) { |
| for (E event: events) { |
| notifyDelegate(networkId, event); |
| } |
| } |
| } |