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/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch.common;
import org.elasticsearch.common.settings.SecureString;
import java.util.Random;
public class UUIDs {
private static final RandomBasedUUIDGenerator RANDOM_UUID_GENERATOR = new RandomBasedUUIDGenerator();
private static final UUIDGenerator LEGACY_TIME_UUID_GENERATOR = new LegacyTimeBasedUUIDGenerator();
private static final UUIDGenerator TIME_UUID_GENERATOR = new TimeBasedUUIDGenerator();
/** Generates a time-based UUID (similar to Flake IDs), which is preferred when generating an ID to be indexed into a Lucene index as
* primary key. The id is opaque and the implementation is free to change at any time! */
public static String base64UUID() {
return TIME_UUID_GENERATOR.getBase64UUID();
}
/** Legacy implementation of {@link #base64UUID()}, for pre 6.0 indices. */
public static String legacyBase64UUID() {
return LEGACY_TIME_UUID_GENERATOR.getBase64UUID();
}
/** Returns a Base64 encoded version of a Version 4.0 compatible UUID as defined here: http://www.ietf.org/rfc/rfc4122.txt, using the
* provided {@code Random} instance */
public static String randomBase64UUID(Random random) {
return RANDOM_UUID_GENERATOR.getBase64UUID(random);
}
/** Returns a Base64 encoded version of a Version 4.0 compatible UUID as defined here: http://www.ietf.org/rfc/rfc4122.txt, using a
* private {@code SecureRandom} instance */
public static String randomBase64UUID() {
return RANDOM_UUID_GENERATOR.getBase64UUID();
}
/** Returns a Base64 encoded {@link SecureString} of a Version 4.0 compatible UUID as defined here: http://www.ietf.org/rfc/rfc4122.txt,
* using a private {@code SecureRandom} instance */
public static SecureString randomBase64UUIDSecureString() {
return RANDOM_UUID_GENERATOR.getBase64UUIDSecureString();
}
}