Java PacketUtil示例

示例#1

文件： SelectSessionAutoIncrement.java 项目： 0359xiaodong/cobar

  static {
    int i = 0;
    byte packetId = 0;
    header.packetId = ++packetId;

    fields[i] = PacketUtil.getField("SESSION.AUTOINCREMENT", Fields.FIELD_TYPE_LONGLONG);
    fields[i++].packetId = ++packetId;

    eof.packetId = ++packetId;
  }

示例#2

文件： ShowDatabase.java 项目： wwhwj1981720/cobar

  static {
    int i = 0;
    byte packetId = 0;
    header.packetId = ++packetId;

    fields[i] = PacketUtil.getField("DATABASE", Fields.FIELD_TYPE_VAR_STRING);
    fields[i++].packetId = ++packetId;

    eof.packetId = ++packetId;
  }

示例#3

文件： ShowRouter.java 项目： Zehao/cobar

  static {
    int i = 0;
    byte packetId = 0;
    header.packetId = ++packetId;

    fields[i] = PacketUtil.getField("PROCESSOR_NAME", Fields.FIELD_TYPE_VAR_STRING);
    fields[i++].packetId = ++packetId;

    fields[i] = PacketUtil.getField("ROUTE_COUNT", Fields.FIELD_TYPE_LONGLONG);
    fields[i++].packetId = ++packetId;

    fields[i] = PacketUtil.getField("TIME_COUNT", Fields.FIELD_TYPE_FLOAT);
    fields[i++].packetId = ++packetId;

    fields[i] = PacketUtil.getField("MAX_ROUTE_TIME", Fields.FIELD_TYPE_FLOAT);
    fields[i++].packetId = ++packetId;

    fields[i] = PacketUtil.getField("MAX_ROUTE_SQL_ID", Fields.FIELD_TYPE_LONGLONG);
    fields[i++].packetId = ++packetId;

    eof.packetId = ++packetId;
  }

示例#4

文件： ShowDatabase.java 项目： wwhwj1981720/cobar

/**
 * 查看schema信息
 *
 * @author wenfeng.cenwf 2011-4-21
 * @author xianmao.hexm
 */
public final class ShowDatabase {

  private static final int FIELD_COUNT = 1;
  private static final ResultSetHeaderPacket header = PacketUtil.getHeader(FIELD_COUNT);
  private static final FieldPacket[] fields = new FieldPacket[FIELD_COUNT];
  private static final EOFPacket eof = new EOFPacket();

  static {
    int i = 0;
    byte packetId = 0;
    header.packetId = ++packetId;

    fields[i] = PacketUtil.getField("DATABASE", Fields.FIELD_TYPE_VAR_STRING);
    fields[i++].packetId = ++packetId;

    eof.packetId = ++packetId;
  }

  public static void execute(ManagerConnection c) {
    ByteBuffer buffer = c.allocate();

    // write header
    buffer = header.write(buffer, c);

    // write fields
    for (FieldPacket field : fields) {
      buffer = field.write(buffer, c);
    }

    // write eof
    buffer = eof.write(buffer, c);

    // write rows
    byte packetId = eof.packetId;
    Map<String, SchemaConfig> schemas = CobarServer.getInstance().getConfig().getSchemas();
    for (String name : new TreeSet<String>(schemas.keySet())) {
      RowDataPacket row = new RowDataPacket(FIELD_COUNT);
      row.add(StringUtil.encode(name, c.getCharset()));
      row.packetId = ++packetId;
      buffer = row.write(buffer, c);
    }

    // write lastEof
    EOFPacket lastEof = new EOFPacket();
    lastEof.packetId = ++packetId;
    buffer = lastEof.write(buffer, c);

    // write buffer
    c.write(buffer);
  }
}

示例#5

文件： SelectSessionAutoIncrement.java 项目： 0359xiaodong/cobar

/** @author xianmao.hexm 2011-5-9 下午06:06:12 */
public final class SelectSessionAutoIncrement {

  private static final int FIELD_COUNT = 1;
  private static final ResultSetHeaderPacket header = PacketUtil.getHeader(FIELD_COUNT);
  private static final FieldPacket[] fields = new FieldPacket[FIELD_COUNT];
  private static final EOFPacket eof = new EOFPacket();

  static {
    int i = 0;
    byte packetId = 0;
    header.packetId = ++packetId;

    fields[i] = PacketUtil.getField("SESSION.AUTOINCREMENT", Fields.FIELD_TYPE_LONGLONG);
    fields[i++].packetId = ++packetId;

    eof.packetId = ++packetId;
  }

  public static void execute(ManagerConnection c) {
    ByteBuffer buffer = c.allocate();

    // write header
    buffer = header.write(buffer, c);

    // write fields
    for (FieldPacket field : fields) {
      buffer = field.write(buffer, c);
    }

    // write eof
    buffer = eof.write(buffer, c);

    // 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);

    // write last eof
    EOFPacket lastEof = new EOFPacket();
    lastEof.packetId = ++packetId;
    buffer = lastEof.write(buffer, c);

    // post write
    c.write(buffer);
  }
}

示例#6

文件： ShowRouter.java 项目： Zehao/cobar

/** @author xianmao.hexm 2010-9-30 下午01:47:38 */
public final class ShowRouter {

  private static final int FIELD_COUNT = 5;
  private static final ResultSetHeaderPacket header = PacketUtil.getHeader(FIELD_COUNT);
  private static final FieldPacket[] fields = new FieldPacket[FIELD_COUNT];
  private static final EOFPacket eof = new EOFPacket();

  static {
    int i = 0;
    byte packetId = 0;
    header.packetId = ++packetId;

    fields[i] = PacketUtil.getField("PROCESSOR_NAME", Fields.FIELD_TYPE_VAR_STRING);
    fields[i++].packetId = ++packetId;

    fields[i] = PacketUtil.getField("ROUTE_COUNT", Fields.FIELD_TYPE_LONGLONG);
    fields[i++].packetId = ++packetId;

    fields[i] = PacketUtil.getField("TIME_COUNT", Fields.FIELD_TYPE_FLOAT);
    fields[i++].packetId = ++packetId;

    fields[i] = PacketUtil.getField("MAX_ROUTE_TIME", Fields.FIELD_TYPE_FLOAT);
    fields[i++].packetId = ++packetId;

    fields[i] = PacketUtil.getField("MAX_ROUTE_SQL_ID", Fields.FIELD_TYPE_LONGLONG);
    fields[i++].packetId = ++packetId;

    eof.packetId = ++packetId;
  }

  public static void execute(ManagerConnection c) {
    ByteBuffer buffer = c.allocate();

    // write header
    buffer = header.write(buffer, c);

    // write fields
    for (FieldPacket field : fields) {
      buffer = field.write(buffer, c);
    }

    // write eof
    buffer = eof.write(buffer, c);

    // write rows
    byte packetId = eof.packetId;
    for (NIOProcessor p : CobarServer.getInstance().getProcessors()) {
      RowDataPacket row = getRow(p, c.getCharset());
      row.packetId = ++packetId;
      buffer = row.write(buffer, c);
    }

    // write last eof
    EOFPacket lastEof = new EOFPacket();
    lastEof.packetId = ++packetId;
    buffer = lastEof.write(buffer, c);

    // write buffer
    c.write(buffer);
  }

  private static final NumberFormat nf = DecimalFormat.getInstance();

  static {
    nf.setMaximumFractionDigits(3);
  }

  private static RowDataPacket getRow(NIOProcessor processor, String charset) {
    RowDataPacket row = new RowDataPacket(FIELD_COUNT);
    row.add(processor.getName().getBytes());
    row.add(null);
    row.add(null);
    row.add(null);
    row.add(null);
    return row;
  }
}