| /* |
| * Copyright 2015-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.mcast.impl; |
| |
| import com.google.common.collect.ImmutableSet; |
| import com.google.common.collect.Maps; |
| import org.onosproject.net.ConnectPoint; |
| |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| import static com.google.common.base.Preconditions.checkNotNull; |
| |
| /** |
| * Simple entity maintaining a mapping between a source and a collection of sink |
| * connect points. |
| */ |
| public final class MulticastData { |
| |
| private final AtomicReference<ConnectPoint> source = |
| new AtomicReference<>(); |
| private final Map<ConnectPoint, Boolean> sinks; |
| private final AtomicBoolean isEmpty = new AtomicBoolean(); |
| |
| private MulticastData() { |
| this.sinks = Maps.newConcurrentMap(); |
| isEmpty.set(true); |
| } |
| |
| public MulticastData(ConnectPoint source) { |
| this.source.set(checkNotNull(source, "Multicast source cannot be null.")); |
| this.sinks = Maps.newConcurrentMap(); |
| isEmpty.set(false); |
| } |
| |
| public ConnectPoint source() { |
| return source.get(); |
| } |
| |
| public Set<ConnectPoint> sinks() { |
| return ImmutableSet.copyOf(sinks.keySet()); |
| } |
| |
| public void setSource(ConnectPoint source) { |
| // FIXME: violates immutability |
| isEmpty.set(false); |
| this.source.set(source); |
| } |
| |
| public void appendSink(ConnectPoint sink) { |
| checkNotNull(sink); |
| sinks.put(sink, true); |
| } |
| |
| public void removeSink(ConnectPoint sink) { |
| checkNotNull(sink); |
| sinks.remove(sink); |
| } |
| |
| public boolean isEmpty() { |
| return isEmpty.get(); |
| } |
| |
| public static MulticastData empty() { |
| return new MulticastData(); |
| } |
| |
| } |