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/**
 * 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.inputs.transports.netty;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import org.graylog2.plugin.inputs.MessageInput;
import org.slf4j.Logger;

public class ExceptionLoggingChannelHandler extends ChannelInboundHandlerAdapter {
    private final MessageInput input;
    private final Logger logger;

    public ExceptionLoggingChannelHandler(MessageInput input, Logger logger) {
        this.input = input;
        this.logger = logger;
    }

    @Override
    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
        if (logger.isTraceEnabled() && "Connection reset by peer".equals(cause.getMessage())) {
            logger.trace("{} in Input [{}/{}] (channel {})",
                    cause.getMessage(),
                    input.getName(),
                    input.getId(),
                    ctx.channel());
        } else {
            logger.error("Error in Input [{}/{}] (channel {}) (cause {})",
                    input.getName(),
                    input.getId(),
                    ctx.channel(),
                    cause);
        }

        ctx.close();
    }
}