com.antsdb.saltedfish.server.mysql.packet.replication.RowsEventV2Packet.java Source code

Introduction

Here is the source code for com.antsdb.saltedfish.server.mysql.packet.replication.RowsEventV2Packet.java

Source

/*-------------------------------------------------------------------------------------------------
 _______ __   _ _______ _______ ______  ______
 |_____| | \  |    |    |______ |     \ |_____]
 |     | |  \_|    |    ______| |_____/ |_____]
    
 Copyright (c) 2016, antsdb.com and/or its affiliates. All rights reserved. *-xguo0<@
    
 This program is free software: you can redistribute it and/or modify it under the terms of the
 GNU Affero General Public License, version 3, as published by the Free Software Foundation.
    
 You should have received a copy of the GNU Affero General Public License along with this program.
 If not, see <https://www.gnu.org/licenses/agpl-3.0.txt>
-------------------------------------------------------------------------------------------------*/
package com.antsdb.saltedfish.server.mysql.packet.replication;

import java.util.BitSet;

import org.slf4j.Logger;

import com.antsdb.saltedfish.server.mysql.MysqlClientHandler;
import com.antsdb.saltedfish.server.mysql.util.BufferUtils;
import com.antsdb.saltedfish.util.UberUtil;

import io.netty.buffer.ByteBuf;

/**
 * 
 * https://dev.mysql.com/doc/internals/en/rows-event.html
 * 
 * @author luor5
 *
 */
public class RowsEventV2Packet extends ReplicationPacket {
    static Logger _log = UberUtil.getThisLogger();

    public long tableId;
    public int flags;
    public int extraDataLen;
    public int colCount;
    public BitSet colPresentBitmap;
    // for update
    public BitSet colPresentBitmapAftImg;

    public ByteBuf rawRows;

    public RowsEventV2Packet(int type, long length, long pos) {
        super(type, length, pos);
    }

    @Override
    public void read(MysqlClientHandler handler, ByteBuf in) {
        // header
        int begin = in.readerIndex();

        // 6 bytes tabble id
        tableId = BufferUtils.readPackedInteger(in, 6);
        // 2 bytes flags
        flags = BufferUtils.readInt(in);
        extraDataLen = BufferUtils.readInt(in);

        // body
        // number of columns
        int index = in.readerIndex();
        colCount = (int) BufferUtils.readLength(in);

        int presentCount = (colCount + 7) / 8;
        byte[] presentBits = new byte[presentCount];
        in.readBytes(presentBits);

        colPresentBitmap = BitSet.valueOf(presentBits);

        if (eventType == ReplicationPacket.UPDATE_ROWS_EVENT) {
            byte[] presentUptBits = new byte[presentCount];
            in.readBytes(presentUptBits);
            colPresentBitmapAftImg = BitSet.valueOf(presentUptBits);
        }

        int readCnt = in.readerIndex() - index;

        // eventlength - event_header_length - post_header_length - rest data length
        rawRows = in.readBytes((int) eventlength - 29 - readCnt);

        int end = in.readerIndex();

        if (_log.isTraceEnabled()) {
            in.readerIndex(begin);
            byte[] bytes = new byte[end - begin];
            in.readBytes(bytes);
            String dump = '\n' + UberUtil.hexDump(bytes);
            _log.trace("Packet Info:\n" + this.toString() + "\nRowsEventV2Packet packet:\n" + dump);
        }

    }

}