org.apache.activemq.artemis.utils

Class UUIDGenerator

java.lang.Object

org.apache.activemq.artemis.utils.UUIDGenerator

public final class UUIDGenerator
extends Object

Method Summary

Modifier and Type	Method and Description
byte[]	generateDummyAddress()
SimpleString	generateSimpleStringUUID()
String	generateStringUUID()
UUID	generateTimeBasedUUID(byte[] byteAddr)
UUID	generateUUID()
static byte[]	getHardwareAddress() If running java 6 or above, returns NetworkInterface.getHardwareAddress(), else return null.
static UUIDGenerator	getInstance() Method used for accessing the singleton generator instance.
Random	getRandomNumberGenerator() Method for getting the shared random number generator used for generating the UUIDs.
static byte[]	getZeroPaddedSixBytes(byte[] bytes)

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static UUIDGenerator getInstance()

Method used for accessing the singleton generator instance.

Returns:

Instance of UUID Generator

getRandomNumberGenerator

public Random getRandomNumberGenerator()

Method for getting the shared random number generator used for generating the UUIDs. This way the initialization cost is only taken once; access need not be synchronized (or in cases where it has to, SecureRandom takes care of it); it might even be good for getting really 'random' stuff to get shared access..

Returns:

A Random number generator.

generateTimeBasedUUID

public UUID generateTimeBasedUUID(byte[] byteAddr)

generateDummyAddress

public byte[] generateDummyAddress()

getHardwareAddress

public static byte[] getHardwareAddress()

If running java 6 or above, returns NetworkInterface.getHardwareAddress(), else return null. The first hardware address is returned when iterating all the NetworkInterfaces

Returns:

A byte array containing the hardware address.

generateSimpleStringUUID

public SimpleString generateSimpleStringUUID()

generateUUID

public UUID generateUUID()

generateStringUUID

public String generateStringUUID()

getZeroPaddedSixBytes

public static byte[] getZeroPaddedSixBytes(byte[] bytes)