me.ahoo.cosid.snowflake

Class AbstractSnowflakeId

java.lang.Object

me.ahoo.cosid.snowflake.AbstractSnowflakeId

All Implemented Interfaces:

IdGenerator, SnowflakeId, StringIdGenerator

Direct Known Subclasses:

MillisecondSnowflakeId, SecondSnowflakeId

public abstract class AbstractSnowflakeId
extends java.lang.Object
implements SnowflakeId

Abstract SnowflakeId.

Field Summary

Fields

Modifier and Type	Field and Description
protected long	epoch
protected long	lastTimestamp
protected int	machineBit
protected long	machineId
protected long	machineLeft
protected long	maxMachine
protected long	maxSequence
protected long	maxTimestamp
protected long	sequence
protected int	sequenceBit
protected int	timestampBit
protected long	timestampLeft

Fields inherited from interface me.ahoo.cosid.snowflake.SnowflakeId

TOTAL_BIT

Constructor Summary

Constructors

Constructor and Description
AbstractSnowflakeId(long epoch, int timestampBit, int machineBit, int sequenceBit, long machineId, long sequenceResetThreshold)

Method Summary

Modifier and Type	Method and Description
long	generate() Generate distributed ID.
protected abstract long	getCurrentTime() get current timestamp.
long	getEpoch()
long	getLastTimestamp()
int	getMachineBit()
long	getMachineId()
long	getMaxMachine()
long	getMaxSequence()
long	getMaxTimestamp()
int	getSequenceBit()
int	getTimestampBit()
protected long	nextTime()

Methods inherited from class java.lang.Object

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

Methods inherited from interface me.ahoo.cosid.snowflake.SnowflakeId

defaultSequenceResetThreshold, isSafeJavascript

Methods inherited from interface me.ahoo.cosid.IdGenerator

generateAsString, idConverter

Field Detail

epoch

protected final long epoch

timestampBit

protected final int timestampBit

machineBit

protected final int machineBit

sequenceBit

protected final int sequenceBit

maxTimestamp

protected final long maxTimestamp

maxSequence

protected final long maxSequence

maxMachine

protected final long maxMachine

machineLeft

protected final long machineLeft

timestampLeft

protected final long timestampLeft

machineId

protected final long machineId

sequence

protected long sequence

lastTimestamp

protected long lastTimestamp

Constructor Detail

AbstractSnowflakeId

public AbstractSnowflakeId(long epoch,
                           int timestampBit,
                           int machineBit,
                           int sequenceBit,
                           long machineId,
                           long sequenceResetThreshold)

Method Detail

nextTime

protected long nextTime()

getCurrentTime

protected abstract long getCurrentTime()

get current timestamp.

Returns:

current timestamp

generate

public long generate()

Description copied from interface: IdGenerator

Generate distributed ID.

Specified by:

generate in interface IdGenerator

Returns:

generated distributed ID

getEpoch

public long getEpoch()

Specified by:

getEpoch in interface SnowflakeId

getTimestampBit

public int getTimestampBit()

Specified by:

getTimestampBit in interface SnowflakeId

getMachineBit

public int getMachineBit()

Specified by:

getMachineBit in interface SnowflakeId

getSequenceBit

public int getSequenceBit()

Specified by:

getSequenceBit in interface SnowflakeId

getMaxTimestamp

public long getMaxTimestamp()

Specified by:

getMaxTimestamp in interface SnowflakeId

getMaxMachine

public long getMaxMachine()

Specified by:

getMaxMachine in interface SnowflakeId

getMaxSequence

public long getMaxSequence()

Specified by:

getMaxSequence in interface SnowflakeId

getLastTimestamp

public long getLastTimestamp()

Specified by:

getLastTimestamp in interface SnowflakeId

getMachineId

public long getMachineId()

Specified by:

getMachineId in interface SnowflakeId