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Extract common UUID operations into a utility class.

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This commit is contained in:
Jon Chambers
2021-02-04 17:47:34 -05:00
committed by Jon Chambers
parent a015237fd2
commit 2fe743649d
3 changed files with 39 additions and 20 deletions
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30
service/src/main/java/org/whispersystems/textsecuregcm/util/UUIDUtil.java Normal file
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@@ -0,0 +1,30 @@
/*
* Copyright 2021 Signal Messenger, LLC
* SPDX-License-Identifier: AGPL-3.0-only
*/
package org.whispersystems.textsecuregcm.util;
import java.nio.ByteBuffer;
import java.util.UUID;
public class UUIDUtil {
public static byte[] toBytes(final UUID uuid) {
final ByteBuffer byteBuffer = ByteBuffer.wrap(new byte[16]);
byteBuffer.putLong(uuid.getMostSignificantBits());
byteBuffer.putLong(uuid.getLeastSignificantBits());
return byteBuffer.array();
}
public static UUID fromBytes(final byte[] bytes) {
if (bytes.length != 16) {
throw new IllegalArgumentException("unexpected byte array length; was " + bytes.length + " but expected 16");
}
final ByteBuffer byteBuffer = ByteBuffer.wrap(bytes);
final long mostSigBits = byteBuffer.getLong();
final long leastSigBits = byteBuffer.getLong();
return new UUID(mostSigBits, leastSigBits);
}
}