com.hotels.styx.server.UniqueIdSuppliers Maven / Gradle / Ivy
/*
Copyright (C) 2013-2018 Expedia Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package com.hotels.styx.server;
import com.fasterxml.uuid.EthernetAddress;
import com.fasterxml.uuid.Generators;
import com.fasterxml.uuid.NoArgGenerator;
/**
* Useful unique id suppliers.
*/
public final class UniqueIdSuppliers {
private static final NoArgGenerator TIME_BASED_GENERATOR = Generators.timeBasedGenerator(EthernetAddress.fromInterface());
/**
* A unique ID supplier which uses a UUID Version One implementation.
*/
public static final UniqueIdSupplier UUID_VERSION_ONE_SUPPLIER = () -> TIME_BASED_GENERATOR.generate().toString();
/**
* Returns a supplier whose {@code get()} method returns the {@code uniqueId} passed in.
*
* @return a new ID supplier
*/
public static UniqueIdSupplier fixedUniqueIdSupplier(String uniqueId) {
return () -> uniqueId;
}
private UniqueIdSuppliers() {
}
}