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/**
 * The MIT License
 * Copyright (c) 2012 Graylog, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
/**
 * This file is part of Graylog.
 *
 * Graylog is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Graylog is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Graylog.  If not, see .
 */
package org.graylog2.plugin.inputs.util;

import org.graylog2.plugin.inputs.MessageInput;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.channel.MessageEvent;
import org.jboss.netty.channel.SimpleChannelUpstreamHandler;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class PacketInformationDumper extends SimpleChannelUpstreamHandler {
    private static final Logger LOG = LoggerFactory.getLogger(PacketInformationDumper.class);
    private final Logger sourceInputLog;

    private final String sourceInputName;
    private final String sourceInputId;

    public PacketInformationDumper(MessageInput sourceInput) {
        sourceInputName = sourceInput.getName();
        sourceInputId = sourceInput.getId();
        sourceInputLog = LoggerFactory.getLogger(PacketInformationDumper.class.getCanonicalName() + "." + sourceInputId);
        LOG.debug("Set {} to TRACE for network packet metadata dumps of input {}", sourceInputLog.getName(),
                  sourceInput.getUniqueReadableId());
    }

    @Override
    public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
        try {
            if (sourceInputLog.isTraceEnabled()) {
                final ChannelBuffer message = (ChannelBuffer) e.getMessage();
                sourceInputLog.trace("Recv network data: {} bytes via input '{}' <{}> from remote address {}",
                          message.readableBytes(), sourceInputName, sourceInputId, e.getRemoteAddress());
            }
        } finally {
            super.messageReceived(ctx, e);
        }
    }
}