org.spf4j.concurrent

Class UIDGenerator

java.lang.Object

org.spf4j.concurrent.UIDGenerator

@ParametersAreNonnullByDefault
public final class UIDGenerator
extends Object

Unique ID Generator Based on the assumptions: 1. host MAC address is used. (each network interface has a Unique ID) (encoded with provided encoder) 2. process id is used + current epoch seconds. it is assumed the PID is not recycled within a second. 3. A process sequence is used. UIDs will cycle after Long.MaxValue is reached.

Author:

zoly

Constructor Summary

Constructors

Constructor and Description
UIDGenerator(Sequence sequence)
UIDGenerator(Sequence sequence, com.google.common.io.BaseEncoding baseEncoding) Construct a UID Generator

Method Summary

Methods

Modifier and Type	Method and Description
int	getMaxSize()
String	next()

Methods inherited from class java.lang.Object

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

Constructor Detail

UIDGenerator

public UIDGenerator(Sequence sequence)

UIDGenerator

public UIDGenerator(Sequence sequence,
            @Nullable
            com.google.common.io.BaseEncoding baseEncoding)

Construct a UID Generator

Parameters:

sequence -

baseEncoding - - if null MAC address based ID will not be included.

Method Detail

getMaxSize

public int getMaxSize()

next

public String next()