Package com.moilioncircle.redis.replicator.rdb

Class RdbParser

java.lang.Object

com.moilioncircle.redis.replicator.rdb.RdbParser

public class RdbParser
extends Object

Redis RDB format

Since:

2.1.0

Author:

Leon Chen

See Also:

rdb.c, Redis rdb dump data format

Field Summary

Fields

Modifier and Type	Field	Description
protected RedisInputStream	in
protected static org.slf4j.Logger	logger
protected RdbVisitor	rdbVisitor
protected AbstractReplicator	replicator

Constructor Summary

Constructors

Constructor	Description
RdbParser(RedisInputStream in, AbstractReplicator replicator)

Method Summary

Modifier and Type	Method	Description
long	parse()	The RDB E-BNF

Methods inherited from class java.lang.Object

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

Field Detail

in

protected final RedisInputStream in

rdbVisitor

protected final RdbVisitor rdbVisitor

replicator

protected final AbstractReplicator replicator

logger

protected static final org.slf4j.Logger logger

Constructor Detail

RdbParser

public RdbParser(RedisInputStream in,
                 AbstractReplicator replicator)

Method Detail

parse

public long parse()
           throws IOException

The RDB E-BNF

RDB = 'REDIS', $version, [AUX], [MODULE_AUX], [FUNCTION], {SELECTDB, [RESIZEDB], {RECORD}}, '0xFF', [$checksum];

RECORD = [EXPIRED], [IDLE | FREQ], KEY, VALUE;

SELECTDB = '0xFE', $length;

AUX = {'0xFA', $string, $string}; (*Introduced in rdb version 7*)

MODULE_AUX = {'0xF7', $module2}; (*Introduced in rdb version 9*)

FUNCTION = {'0xF6', $function}; (*Introduced in rdb version 10*)

RESIZEDB = '0xFB', $length, $length; (*Introduced in rdb version 7*)

EXPIRED = ('0xFD', $second) | ('0xFC', $millisecond);

IDLE = {'0xF8', $value-type}; (*Introduced in rdb version 9*)

FREQ = {'0xF9', $length}; (*Introduced in rdb version 9*)

KEY = $string;

VALUE = $value-type, ( $string

| $list

| $set

| $zset

| $hash

| $zset2 (*Introduced in rdb version 8*)

| $module (*Introduced in rdb version 8*)

| $module2 (*Introduced in rdb version 8*)

| $hashzipmap

| $listziplist

| $setintset

| $zsetziplist

| $hashziplist

| $listquicklist (*Introduced in rdb version 7*)

| $streamlistpacks); (*Introduced in rdb version 9*)

| $zsetlistpack); (*Introduced in rdb version 10*)

| $hashlistpack); (*Introduced in rdb version 10*)

| $listquicklist2); (*Introduced in rdb version 10*)

| $streamlistpacks2); (*Introduced in rdb version 10*)

Returns:

read bytes

Throws:

IOException - when read timeout