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; 020 021import org.apache.reef.exception.evaluator.NetworkException; 022 023import java.util.List; 024 025/** 026 * Connection between two end-points named by identifiers. 027 * 028 * @param <T> type 029 */ 030public interface Connection<T> extends AutoCloseable { 031 032 /** 033 * Opens the connection. 034 * 035 * @throws NetworkException 036 */ 037 void open() throws NetworkException; 038 039 /** 040 * Writes a message to the connection. 041 * 042 * @param message 043 */ 044 void write(T message); 045 046 /** 047 * Writes a list of messages to the connection. 048 * 049 * @param messages 050 */ 051 void write(List<T> messages); 052 053 /** 054 * Closes the connection. 055 * 056 * @throws NetworkException 057 */ 058 @Override 059 void close() throws NetworkException; 060}