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    if (LOG.isLoggable(Level.FINEST)) {
042      LOG.log(Level.FINEST, "The message is successfully sent : {0}", new Object[]{message});
043    }
044  }
045
046  /**
047   * Called when the sent message to remoteAddress is failed to be transferred.
048   */
049  @Override
050  public void onException(final Throwable cause, final SocketAddress remoteAddress, final T message) {
051    if (LOG.isLoggable(Level.FINEST)) {
052      LOG.log(Level.FINEST, "The message to {0} is failed to be sent. message : {1}, cause : {2}"
053          , new Object[]{remoteAddress, message, cause});
054    }
055  }
056}