com.twitter.snowflake.sequence

类 SnowFlakeGenerator

java.lang.Object

com.twitter.snowflake.sequence.SnowFlakeGenerator

所有已实现的接口:

IdGenerator

public class SnowFlakeGenerator
extends Object
implements IdGenerator

The unique id has 64bits (long)

 +------+----------------------+----------------+-----------+
 | sign |  delta millisecond   | worker node id | sequence  |
 +------+----------------------+----------------+-----------+
   1bit        timeBits            workerBits      seqBits
 
 

Note that: The total bits must be 64

• sign: The highest bit is 0
• delta millisecond:
• worker id:
• sequence:

作者:

svili

构造器概要

构造器

构造器和说明
SnowFlakeGenerator(int timeBits, int workerBits, int seqBits, long epochTimestamp, long workerId)
SnowFlakeGenerator(TimeUnit timeUnit, int timeBits, int workerBits, int seqBits, long epochTimestamp, long workerId)

方法概要

方法

限定符和类型	方法和说明
long	nextId() Generate unique id
String	parse(long id) Parse the ID into elements which are used to generate the ID.

从类继承的方法 java.lang.Object

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

构造器详细资料

SnowFlakeGenerator

public SnowFlakeGenerator(int timeBits,
                  int workerBits,
                  int seqBits,
                  long epochTimestamp,
                  long workerId)

SnowFlakeGenerator

public SnowFlakeGenerator(TimeUnit timeUnit,
                  int timeBits,
                  int workerBits,
                  int seqBits,
                  long epochTimestamp,
                  long workerId)

方法详细资料

nextId

public long nextId()

Generate unique id

指定者:

nextId 在接口中 IdGenerator

返回:

id

抛出:

SnowFlakeException - in the case: Clock moved backwards; Exceeds the max timestamp

parse

public String parse(long id)

从接口复制的说明: IdGenerator

Parse the ID into elements which are used to generate the ID.
Such as timestamp & workerId & sequence...

指定者:

parse 在接口中 IdGenerator

返回:

Parsed info