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.api.task; 020 021import org.apache.reef.io.network.group.impl.GroupCommunicationMessage; 022 023/** 024 * The actual node that is part of the operator topology 025 * 026 * Receives data from the handlers and provides them to the 027 * operators/OperatorTopologyStruct when they need it. 028 * 029 * This implementation decouples the send and receive. 030 */ 031public interface NodeStruct { 032 033 String getId(); 034 035 int getVersion(); 036 037 void setVersion(int version); 038 039 byte[] getData(); 040 041 void addData(GroupCommunicationMessage msg); 042}