2 * Copyright (c) 2010-2023 Contributors to the openHAB project
4 * See the NOTICE file(s) distributed with this work for additional
7 * This program and the accompanying materials are made available under the
8 * terms of the Eclipse Public License 2.0 which is available at
9 * http://www.eclipse.org/legal/epl-2.0
11 * SPDX-License-Identifier: EPL-2.0
13 package org.openhab.binding.lifx.internal;
15 import java.util.concurrent.atomic.AtomicInteger;
16 import java.util.function.Supplier;
18 import org.eclipse.jdt.annotation.NonNullByDefault;
21 * Supplies sequence numbers for packets in the range [0, 255].
23 * @author Wouter Born - Initial contribution
26 public class LifxSequenceNumberSupplier implements Supplier<Integer> {
28 private static final int SEQUENCE_NUMBER_DIVISOR = 256;
29 private final AtomicInteger sequenceNumber = new AtomicInteger(1);
32 public Integer get() {
33 return sequenceNumber.getAndUpdate((value) -> {
34 return (value + 1) % SEQUENCE_NUMBER_DIVISOR;