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.wake.remote.transport.netty; 020 021import org.apache.reef.wake.remote.transport.LinkListener; 022 023import java.net.SocketAddress; 024import java.util.logging.Level; 025import java.util.logging.Logger; 026 027/** 028 * Link listener that logs whether the message is sent successfully. 029 * 030 * @param <T> type 031 */ 032public class LoggingLinkListener<T> implements LinkListener<T> { 033 034 private static final Logger LOG = Logger.getLogger(LoggingLinkListener.class.getName()); 035 036 /** 037 * Called when the sent message is transferred successfully. 038 */ 039 @Override 040 public void onSuccess(final T message) { 041 LOG.log(Level.FINEST, "Message successfully sent: {0}", message); 042 } 043 044 /** 045 * Called when the sent message to remoteAddress is failed to be transferred. 046 */ 047 @Override 048 public void onException(final Throwable cause, final SocketAddress remoteAddress, final T message) { 049 if (LOG.isLoggable(Level.FINEST)) { 050 LOG.log(Level.FINEST, "Error sending message " + message + " to " + remoteAddress, cause); 051 } 052 } 053}