SpringBoot集成yitter-idgenerator(雪花漂移)分布式Id自增的实现

       <dependency>
            <groupId>org.redisson</groupId>
            <artifactId>redisson-spring-boot-starter</artifactId>
            <version>3.10.6</version>
        </dependency> 
		<dependency>
		    <groupId>cn.hutool</groupId>
		    <artifactId>hutool-core</artifactId>
		    <version>5.7.19</version>
		</dependency>
        <dependency>
            <groupId>com.github.yitter</groupId>
            <artifactId>yitter-idgenerator</artifactId>
            <version>1.0.6</version>
        </dependency>

/**
 * Redisson分布式锁工具类
 */
@Component
public class RedissonUtil {

    @Autowired
    private RedissonClient redissonClient;

    /**
     * 加锁
     * @param lockKey
     * @return
     */
    public RLock lock(String lockKey) {
        RLock lock = redissonClient.getLock(lockKey);
        lock.lock();
        return lock;
    }

    /**
     * 带超时的锁
     * @param lockKey
     * @param timeout 超时时间 单位：秒
     */
    public RLock lock(String lockKey, long timeout) {
        RLock lock = redissonClient.getLock(lockKey);
        lock.lock(timeout, TimeUnit.SECONDS);
        return lock;
    }

    /**
     * 带超时的锁
     * @param lockKey
     * @param unit 时间单位
     * @param timeout 超时时间
     */
    public RLock lock(String lockKey, TimeUnit unit ,long timeout) {
        RLock lock = redissonClient.getLock(lockKey);
        lock.lock(timeout, unit);
        return lock;
    }

    /**
     * 尝试获取锁
     * @param lockKey
     * @param waitTime 最多等待时间
     * @param unit TimeUnit时间单位
     * @return
     */
    public  boolean tryLock(String lockKey,long waitTime, TimeUnit unit) {
        RLock lock = redissonClient.getLock(lockKey);
        try {
            return lock.tryLock(waitTime, unit);
        } catch (InterruptedException e) {
            return false;
        }
    }

    /**
     * 尝试获取锁
     * @param lockKey
     * @param waitTime 最多等待时间
     * @param leaseTime 上锁后自动释放锁时间
     * @return
     */
    public  boolean tryLock(String lockKey, long waitTime, long leaseTime) {
        RLock lock = redissonClient.getLock(lockKey);
        try {
            return lock.tryLock(waitTime, leaseTime, TimeUnit.SECONDS);
        } catch (InterruptedException e) {
            return false;
        }
    }

    /**
     * 尝试获取锁
     * @param lockKey
     * @param unit 时间单位
     * @param waitTime 最多等待时间
     * @param leaseTime 上锁后自动释放锁时间
     * @return
     */
    public boolean tryLock(String lockKey, TimeUnit unit, long waitTime, long leaseTime) {
        RLock lock = redissonClient.getLock(lockKey);
        try {
            return lock.tryLock(waitTime, leaseTime, unit);
        } catch (InterruptedException e) {
            return false;
        }
    }

    /**
     * 释放锁
     * @param lockKey
     */
    public void unlock(String lockKey) {
        RLock lock = redissonClient.getLock(lockKey);
        lock.unlock();
    }

    /**
     * 若没用锁情况下，就不调用释放锁的代码，若有锁情况下才调用释放锁
     * @param lockKey
     */
    public void unlockIgnore(String lockKey) {
        RLock lock = redissonClient.getLock(lockKey);
        if ( !lock.isLocked() ) {
           return ;
        }
        lock.unlock();
    }


    /**
     * 释放锁
     * @param lock
     */
    public void unlock(RLock lock) {
        lock.unlock();
    }

}

 
@Slf4j
@Component
@Order(0)
public class SystemInitConfig implements CommandLineRunner {

    @Autowired
    private RedissonUtil redissonUtil;

    @Autowired
    private RedisTemplate redisTemplate;

    /**
     * 分布式锁Key
     */
    private static final String CACHE_ID_GENERATOR = "LOCK_ID_GENERATOR";

    /**
     * 最大机器号Key
     */
    private static final String CACHE_WORKERID_MAXID= "CACHE_WORKERID_MAXID";

    /**
     * 已分配的机器号Key
     */
    private static final String CACHE_ID_IP = "CACHE_ID_IP";

    @Override
    public void run(String... args) throws Exception {
        //获取mac地址
        String macAddress = NetUtil.getLocalhost().getHostAddress();
        log.info("{} 配置分布式Id Work缓存========开始",macAddress);
        boolean existWorkerId =  redisTemplate.opsForHash().hasKey(CACHE_ID_IP, macAddress);
        //若已缓存在缓存中，直接跳过不设置
        if (existWorkerId) {
            log.info("{} 已配置分布式Id Work...",macAddress);
            return ;
        }
        try {
            //分布式锁等待120秒，执行时长最大120秒
            boolean  locked = redissonUtil.tryLock(CACHE_ID_GENERATOR, 120, 120);
            if (!locked) {
                throw new RuntimeException(macAddress+"设置分布式Id机器号失败");
            }
            ValueOperations <String,Integer> stringOperation = redisTemplate.opsForValue();
            boolean initWorkerId = stringOperation.setIfAbsent(CACHE_WORKERID_MAXID, 1);
            if( !initWorkerId ) {
                //若已存在key，对最大的机器号自增1
                stringOperation.increment(CACHE_WORKERID_MAXID);
            }
            Integer workerId =   stringOperation.get(CACHE_WORKERID_MAXID);
            IdGeneratorOptions options = new IdGeneratorOptions( workerId.shortValue());
            YitIdHelper.setIdGenerator(options);
            //设置mac地址 - workerid 到hash结构
            redisTemplate.opsForHash().put(CACHE_ID_IP,macAddress,workerId);
            log.info("已配置分布式Id Work,{} - {}",macAddress,workerId);
        } finally {
            redissonUtil.unlock(CACHE_ID_GENERATOR);
            log.info("{} 配置分布式Id Work缓存========结束",macAddress);
        }

    }
}

YitIdHelper.nextId()