| /* |
| * Copyright 2014 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.event; |
| |
| import com.google.common.collect.ImmutableSet; |
| |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| /** |
| * Base implementation of event sink registry. |
| */ |
| public class DefaultEventSinkRegistry implements EventSinkRegistry { |
| |
| private final Map<Class<? extends Event>, EventSink<? extends Event>> |
| sinks = new ConcurrentHashMap<>(); |
| |
| @Override |
| public <E extends Event> void addSink(Class<E> eventClass, EventSink<E> sink) { |
| checkNotNull(eventClass, "Event class cannot be null"); |
| checkNotNull(sink, "Event sink cannot be null"); |
| checkArgument(!sinks.containsKey(eventClass), |
| "Event sink already registered for %s", eventClass.getName()); |
| sinks.put(eventClass, sink); |
| } |
| |
| @Override |
| public <E extends Event> void removeSink(Class<E> eventClass) { |
| checkNotNull(eventClass, "Event class cannot be null"); |
| checkArgument(sinks.remove(eventClass) != null, |
| "Event sink not registered for %s", eventClass.getName()); |
| } |
| |
| @Override |
| @SuppressWarnings("unchecked") |
| public <E extends Event> EventSink<E> getSink(Class<E> eventClass) { |
| return (EventSink<E>) sinks.get(eventClass); |
| } |
| |
| @Override |
| public Set<Class<? extends Event>> getSinks() { |
| return ImmutableSet.copyOf(sinks.keySet()); |
| } |
| } |