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The core of Neo4j Bolt Protocol, this contains the state machine for Bolt sessions.

There is a newer version: 5.23.0

/*
 * Copyright (c) 2002-2018 "Neo4j,"
 * Neo4j Sweden AB [http://neo4j.com]
 *
 * This file is part of Neo4j.
 *
 * Neo4j 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.
 *
 * This program 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 this program.  If not, see .
 */
package org.neo4j.bolt.transport.pipeline;

import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;

import org.neo4j.bolt.runtime.BoltConnection;
import org.neo4j.kernel.impl.logging.LogService;

public class HouseKeeper extends ChannelInboundHandlerAdapter
{
    private final BoltConnection connection;
    private final LogService logging;

    public HouseKeeper( BoltConnection connection, LogService logging )
    {
        this.connection = connection;
        this.logging = logging;
    }

    @Override
    public void channelInactive( ChannelHandlerContext ctx )
    {
        connection.stop();
    }

    @Override
    public void exceptionCaught( ChannelHandlerContext ctx, Throwable cause )
    {
        logging.getInternalLog( getClass() ).error( "Fatal error occurred when handling a client connection: " + ctx.channel(), cause );

        ctx.close();
    }
}