io.liftwizard.dropwizard.configuration.uuid.seed.SeedUUIDSupplier Maven / Gradle / Ivy
/*
* Copyright 2020 Craig Motlin
*
* 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 io.liftwizard.dropwizard.configuration.uuid.seed;
import java.util.Objects;
import java.util.UUID;
import java.util.function.Supplier;
import javax.annotation.Nonnull;
public class SeedUUIDSupplier implements Supplier
{
private final String seed;
private int counter;
public SeedUUIDSupplier(@Nonnull String seed)
{
this.seed = Objects.requireNonNull(seed);
}
@Nonnull
@Override
public UUID get()
{
this.counter++;
String name = this.seed + this.counter;
byte[] bytes = name.getBytes();
return UUID.nameUUIDFromBytes(bytes);
}
}