001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *   http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing,
013 * software distributed under the License is distributed on an
014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015 * KIND, either express or implied.  See the License for the
016 * specific language governing permissions and limitations
017 * under the License.
018 */
019package org.apache.reef.io.network.group.impl.utils;
020
021import org.apache.reef.wake.EventHandler;
022
023import java.util.ArrayList;
024import java.util.List;
025
026/**
027 *
028 */
029public class BroadcastingEventHandler<T> implements EventHandler<T> {
030
031  private List<EventHandler<T>> handlers = new ArrayList<>();
032
033  public void addHandler(final EventHandler<T> handler) {
034    handlers.add(handler);
035  }
036
037  @Override
038  public void onNext(final T msg) {
039    for (final EventHandler<T> handler : handlers) {
040      handler.onNext(msg);
041    }
042  }
043
044}