com.oceanbase.jdbc.internal.protocol.flt

Class OceanBaseProtocolV20

java.lang.Object

com.oceanbase.jdbc.internal.protocol.flt.OceanBaseProtocolV20

public class OceanBaseProtocolV20
extends Object

OceanBase 2.0 Protocol Format： 0 1 2 3 4 Byte +-----------------+----------------------+ | Magic Num | Version | +-----------------+----------------------+ | Connection Id | +-----------------------------+----------+ | Request Id | Seq | +-----------------------------+----------+ | PayLoad Length | +----------------------------------------+ | Flag | +-----------------+----------------------+ | Reserved |Header Checksum(CRC16)| +-----------------+----------------------+ | ... PayLoad Data ... |----------+ +----------------------------------------+ | | Tailer PayLoad Checksum (CRC32) | | +----------------------------------------+ | | +--------------------------+ | v +-------------------+-------------------+-------------------------------------+ | Extra Len(4Byte) | Extra Info(K/V) | Basic Info(Standard MySQL Packet) | +-------------------+-------------------+-------------------------------------+

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	OceanBaseProtocolV20.ExtraInfo
static class	OceanBaseProtocolV20.ExtraInfoKey
static class	OceanBaseProtocolV20.Header

Field Summary

Fields

Modifier and Type	Field and Description
static int	COMPRESS_HEADER_LENGTH
short	curObSeqNo
int	curRequestId
OceanBaseProtocolV20.ExtraInfo	extraInfo
OceanBaseProtocolV20.Header	header
static int	MYSQL_PACKET_HEADER
static int	OB_EXTRA_INFO_EXIST OB Protocol v2.0 Flags (32 bits)
static int	OB_IS_LAST_PACKET
static int	OB_IS_NEW_EXTRA_INFO
static int	OB_IS_PROXY_REROUTE
static int	OB20_EXTRA_LENGTH
static int	OB20_HEADER_LENGTH
static int	OB20_MAGIC_NUM
static int	OB20_TAIL_LENGTH
static int	OB20_VERSION
long	tailChecksum
static int	TOTAL_HEADER_LENGTH
FullLinkTrace.TraceInfo	traceInfo

Constructor Summary

Constructors

Constructor and Description
OceanBaseProtocolV20(boolean useNewExtraInfo)

Method Summary

Modifier and Type	Method and Description
void	analyseExtraInfoBytes()
byte[]	getExtraInfoBytes()
short	getObSeqNo()
void	initObSeqNo(int seqNo)
boolean	isExtraInfoExist()
void	reset()
void	setExtraInfo(ObObj key, ObObj value)
void	setExtraInfo(OceanBaseProtocolV20.ExtraInfoKey key, byte[] valueData)
void	setExtraInfoLength()
void	setTraceInfo(FullLinkTrace.TraceInfo traceInfo)
void	updateRequestId()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

COMPRESS_HEADER_LENGTH

public static final int COMPRESS_HEADER_LENGTH

See Also:

Constant Field Values

OB20_HEADER_LENGTH

public static final int OB20_HEADER_LENGTH

See Also:

Constant Field Values

TOTAL_HEADER_LENGTH

public static final int TOTAL_HEADER_LENGTH

See Also:

Constant Field Values

OB20_MAGIC_NUM

public static final int OB20_MAGIC_NUM

See Also:

Constant Field Values

OB20_VERSION

public static final int OB20_VERSION

See Also:

Constant Field Values

OB20_EXTRA_LENGTH

public static final int OB20_EXTRA_LENGTH

See Also:

Constant Field Values

MYSQL_PACKET_HEADER

public static final int MYSQL_PACKET_HEADER

See Also:

Constant Field Values

OB20_TAIL_LENGTH

public static final int OB20_TAIL_LENGTH

See Also:

Constant Field Values

OB_EXTRA_INFO_EXIST

public static final int OB_EXTRA_INFO_EXIST

OB Protocol v2.0 Flags (32 bits)

See Also:

Constant Field Values

OB_IS_LAST_PACKET

public static final int OB_IS_LAST_PACKET

See Also:

Constant Field Values

OB_IS_PROXY_REROUTE

public static final int OB_IS_PROXY_REROUTE

See Also:

Constant Field Values

OB_IS_NEW_EXTRA_INFO

public static final int OB_IS_NEW_EXTRA_INFO

See Also:

Constant Field Values

header

public OceanBaseProtocolV20.Header header

extraInfo

public OceanBaseProtocolV20.ExtraInfo extraInfo

tailChecksum

public long tailChecksum

traceInfo

public FullLinkTrace.TraceInfo traceInfo

curRequestId

public int curRequestId

curObSeqNo

public short curObSeqNo

Constructor Detail

OceanBaseProtocolV20

public OceanBaseProtocolV20(boolean useNewExtraInfo)

Method Detail

setTraceInfo

public void setTraceInfo(FullLinkTrace.TraceInfo traceInfo)

reset

public void reset()

updateRequestId

public void updateRequestId()

getObSeqNo

public short getObSeqNo()

initObSeqNo

public void initObSeqNo(int seqNo)

isExtraInfoExist

public boolean isExtraInfoExist()

setExtraInfoLength

public void setExtraInfoLength()

setExtraInfo

public void setExtraInfo(ObObj key,
                         ObObj value)

setExtraInfo

public void setExtraInfo(OceanBaseProtocolV20.ExtraInfoKey key,
                         byte[] valueData)

getExtraInfoBytes

public byte[] getExtraInfoBytes()
                         throws IOException

Throws:

IOException

analyseExtraInfoBytes

public void analyseExtraInfoBytes()
                           throws IOException

Throws:

IOException