io.dialob.security.UUIDUtils Maven / Gradle / Ivy
/*
* Copyright © 2015 - 2021 ReSys ([email protected])
*
* 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.dialob.security;
import javax.annotation.Nonnull;
import java.nio.ByteBuffer;
import java.util.UUID;
public final class UUIDUtils {
private UUIDUtils() {
}
public static UUID toUUID(@Nonnull byte[] oid) {
if (oid.length != 16) {
throw new IllegalArgumentException("UUID is 16 bytes long. oid is " + oid.length + " bytes.");
}
ByteBuffer bb = ByteBuffer.wrap(oid);
long firstLong = bb.getLong();
long secondLong = bb.getLong();
return new UUID(firstLong, secondLong);
}
public static byte[] toBytes(@Nonnull UUID uuid) {
ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
bb.putLong(uuid.getMostSignificantBits());
bb.putLong(uuid.getLeastSignificantBits());
return bb.array();
}
}