/*
* Copyright (c) 2013, OpenCloudDB/MyCAT and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software;Designed and Developed mainly by many Chinese
* opensource volunteers. you can redistribute it and/or modify it under the
* terms of the GNU General Public License version 2 only, as published by the
* Free Software Foundation.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Any questions about this component can be directed to it's project Web address
* https://code.google.com/p/opencloudb/.
*
*/
package com.talent.balance.backend.decode;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import com.talent.balance.backend.ext.BackendExt;
import com.talent.balance.common.BalancePacket;
import com.talent.mysql.ext.MysqlExt;
import com.talent.mysql.packet.response.HandshakePacket;
import com.talent.nio.api.Packet;
import com.talent.nio.communicate.ChannelContext;
import com.talent.nio.communicate.intf.DecoderIntf;
/**
*
*
* @filename: com.talent.balance.backend.decode.BackendResponseDecoder
* @copyright: Copyright (c)2010
* @company: talent
* @author: 谭耀武
* @version: 1.0
* @create time: 2013年12月25日 下午1:54:17
* @record
* <table cellPadding="3" cellSpacing="0" style="width:600px">
* <thead style="font-weight:bold;background-color:#e3e197">
* <tr> <td>date</td> <td>author</td> <td>version</td> <td>description</td></tr>
* </thead>
* <tbody style="background-color:#ffffeb">
* <tr><td>2013年12月25日</td> <td>谭耀武</td> <td>1.0</td> <td>create</td></tr>
* </tbody>
* </table>
*/
public class BackendResponseDecoder implements DecoderIntf<Packet>
{
@SuppressWarnings("unused")
private static Logger log = LoggerFactory.getLogger(BackendResponseDecoder.class);
/**
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException
{
}
/**
*
*/
public BackendResponseDecoder()
{
}
@Override
public PacketWithMeta<Packet> decode(ByteBuf buffer, ChannelContext channelContext) throws DecodeException
{
BalancePacket backendResponsePacket = new BalancePacket();
if (MysqlExt.getHandshakePacket(channelContext) == null && BackendExt.PROTOCOL_MYSQL.equals(channelContext.getProtocol())) {
HandshakePacket handshakePacket = new HandshakePacket();
PacketWithMeta<Packet> pwm = handshakePacket.decode(buffer);
return pwm;
}
backendResponsePacket.setBuffer(Unpooled.copiedBuffer(buffer));
List<Packet> packets = new ArrayList<Packet>();
packets.add(backendResponsePacket);
PacketWithMeta<Packet> packetWithMeta = new PacketWithMeta<Packet>();
buffer.readerIndex(buffer.capacity());
packetWithMeta.setPacketLenght(buffer.capacity());
packetWithMeta.setPackets(packets);
return packetWithMeta;
}
}