Examples with RowDataPacket io.mycat.net.mysql.RowDataPacket used on opensource projects

Example 1 with RowDataPacket

use of io.mycat.net.mysql.RowDataPacket in project Mycat-Server by MyCATApache.

the class MyCATSequnceProcessor method outRawData.

private void outRawData(ServerConnection sc, String value) {
    byte packetId = 0;
    int fieldCount = 1;
    ByteBuffer byteBuf = sc.allocate();
    ResultSetHeaderPacket headerPkg = new ResultSetHeaderPacket();
    headerPkg.fieldCount = fieldCount;
    headerPkg.packetId = ++packetId;
    byteBuf = headerPkg.write(byteBuf, sc, true);
    FieldPacket fieldPkg = new FieldPacket();
    fieldPkg.packetId = ++packetId;
    fieldPkg.name = StringUtil.encode("SEQUNCE", sc.getCharset());
    byteBuf = fieldPkg.write(byteBuf, sc, true);
    EOFPacket eofPckg = new EOFPacket();
    eofPckg.packetId = ++packetId;
    byteBuf = eofPckg.write(byteBuf, sc, true);
    RowDataPacket rowDataPkg = new RowDataPacket(fieldCount);
    rowDataPkg.packetId = ++packetId;
    rowDataPkg.add(StringUtil.encode(value, sc.getCharset()));
    byteBuf = rowDataPkg.write(byteBuf, sc, true);
    // write last eof
    EOFPacket lastEof = new EOFPacket();
    lastEof.packetId = ++packetId;
    byteBuf = lastEof.write(byteBuf, sc, true);
    // write buffer
    sc.write(byteBuf);
}

Example 2 with RowDataPacket

use of io.mycat.net.mysql.RowDataPacket in project Mycat-Server by MyCATApache.

the class MaxHeap method heapify.

private void heapify(int i, int size) {
    int max = 0;
    // ==size/2
    int mid = size >> 1;
    while (i <= mid) {
        max = i;
        int left = i << 1;
        int right = left + 1;
        if (left < size && cmp.compare(data.get(left), data.get(i)) > 0) {
            max = left;
        }
        if (right < size && cmp.compare(data.get(right), data.get(max)) > 0) {
            max = right;
        }
        if (i == max) {
            break;
        }
        if (i != max) {
            RowDataPacket tmp = data.get(i);
            data.set(i, data.get(max));
            data.set(max, tmp);
            i = max;
        }
    }
}

Example 3 with RowDataPacket

use of io.mycat.net.mysql.RowDataPacket in project Mycat_plus by coderczp.

the class PackageBufINf method showLogSum.

private static PackageBufINf showLogSum(ManagerConnection c, ByteBuffer buffer, byte packetId) {
    PackageBufINf bufINf = new PackageBufINf();
    File[] logFiles = new File(SystemConfig.getHomePath(), "logs").listFiles();
    String fileNames = "";
    for (File f : logFiles) {
        if (f.isFile()) {
            fileNames += "  " + f.getName();
        }
    }
    File file = getLogFile(DEFAULT_LOGFILE);
    BufferedReader br = null;
    int totalLines = 0;
    CircularArrayList<String> queue = new CircularArrayList<String>(50);
    try {
        br = new BufferedReader(new FileReader(file));
        String line = null;
        while ((line = br.readLine()) != null) {
            totalLines++;
            if (queue.size() == queue.capacity()) {
                queue.remove(0);
            }
            queue.add(line);
        }
        RowDataPacket row = new RowDataPacket(FIELD_COUNT);
        row.add(StringUtil.encode("files in log dir:" + totalLines + fileNames, c.getCharset()));
        row.packetId = ++packetId;
        buffer = row.write(buffer, c, true);
        row = new RowDataPacket(FIELD_COUNT);
        row.add(StringUtil.encode("Total lines " + totalLines + " ,tail " + queue.size() + " line is following:", c.getCharset()));
        row.packetId = ++packetId;
        buffer = row.write(buffer, c, true);
        int size = queue.size() - 1;
        for (int i = size; i >= 0; i--) {
            String data = queue.get(i);
            row = new RowDataPacket(FIELD_COUNT);
            row.add(StringUtil.encode(data, c.getCharset()));
            row.packetId = ++packetId;
            buffer = row.write(buffer, c, true);
        }
        bufINf.buffer = buffer;
        bufINf.packetId = packetId;
        return bufINf;
    } catch (Exception e) {
        LOGGER.error("showLogSumError", e);
        RowDataPacket row = new RowDataPacket(FIELD_COUNT);
        row.add(StringUtil.encode(e.toString(), c.getCharset()));
        row.packetId = ++packetId;
        buffer = row.write(buffer, c, true);
        bufINf.buffer = buffer;
    } finally {
        if (br != null) {
            try {
                br.close();
            } catch (IOException e) {
                LOGGER.error("showLogSumError", e);
            }
        }
    }
    bufINf.packetId = packetId;
    return bufINf;
}

Example 4 with RowDataPacket

use of io.mycat.net.mysql.RowDataPacket in project Mycat_plus by coderczp.

the class SelectSessionAutoIncrement method execute.

public static void execute(ManagerConnection c) {
    ByteBuffer buffer = c.allocate();
    // write header
    buffer = header.write(buffer, c, true);
    // write fields
    for (FieldPacket field : fields) {
        buffer = field.write(buffer, c, true);
    }
    // write eof
    buffer = eof.write(buffer, c, true);
    // write rows
    byte packetId = eof.packetId;
    RowDataPacket row = new RowDataPacket(FIELD_COUNT);
    row.packetId = ++packetId;
    row.add(LongUtil.toBytes(1));
    buffer = row.write(buffer, c, true);
    // write last eof
    EOFPacket lastEof = new EOFPacket();
    lastEof.packetId = ++packetId;
    buffer = lastEof.write(buffer, c, true);
    // post write
    c.write(buffer);
}

Example 5 with RowDataPacket

use of io.mycat.net.mysql.RowDataPacket in project Mycat_plus by coderczp.

the class SelectVersionComment method execute.

public static void execute(ManagerConnection c) {
    ByteBuffer buffer = c.allocate();
    // write header
    buffer = header.write(buffer, c, true);
    // write fields
    for (FieldPacket field : fields) {
        buffer = field.write(buffer, c, true);
    }
    // write eof
    buffer = eof.write(buffer, c, true);
    // write rows
    byte packetId = eof.packetId;
    RowDataPacket row = new RowDataPacket(FIELD_COUNT);
    row.add(VERSION_COMMENT);
    row.packetId = ++packetId;
    buffer = row.write(buffer, c, true);
    // write last eof
    EOFPacket lastEof = new EOFPacket();
    lastEof.packetId = ++packetId;
    buffer = lastEof.write(buffer, c, true);
    // post write
    c.write(buffer);
}