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.driver; 020 021import org.apache.reef.io.network.group.impl.GroupCommunicationMessage; 022import org.apache.reef.io.network.group.impl.utils.Utils; 023import org.apache.reef.tang.annotations.Name; 024import org.apache.reef.wake.AbstractEStage; 025import org.apache.reef.wake.EventHandler; 026import org.apache.reef.wake.impl.SingleThreadStage; 027 028import java.util.HashMap; 029import java.util.Map; 030import java.util.logging.Logger; 031 032/** 033 * The network handler for the group communication service on the driver side. 034 */ 035public class GroupCommMessageHandler implements EventHandler<GroupCommunicationMessage> { 036 037 private static final Logger LOG = Logger.getLogger(GroupCommMessageHandler.class.getName()); 038 039 private final Map<Class<? extends Name<String>>, AbstractEStage<GroupCommunicationMessage>> 040 commGroupMessageStages = new HashMap<>(); 041 042 public void addHandler(final Class<? extends Name<String>> groupName, 043 final SingleThreadStage<GroupCommunicationMessage> stage) { 044 LOG.entering("GroupCommMessageHandler", "addHandler", new Object[]{Utils.simpleName(groupName), stage}); 045 commGroupMessageStages.put(groupName, stage); 046 LOG.exiting("GroupCommMessageHandler", "addHandler", Utils.simpleName(groupName)); 047 } 048 049 @Override 050 public void onNext(final GroupCommunicationMessage msg) { 051 LOG.entering("GroupCommMessageHandler", "onNext", msg); 052 final Class<? extends Name<String>> groupName = Utils.getClass(msg.getGroupname()); 053 commGroupMessageStages.get(groupName).onNext(msg); 054 LOG.exiting("GroupCommMessageHandler", "onNext", msg); 055 } 056}