原生分布式锁

public class CouponController {
    @Autowired
    private StringRedisTemplate redisTemplate;


    @GetMapping("add")
    public JsonData saveCoupon(@RequestParam(value = "coupon_id",required = true) int couponId){
        String uuid = UUID.randomUUID().toString();
        String lockKey = "lock:coupon:"+couponId;
        lock(couponId,uuid,lockKey);
        return JsonData.buildSuccess();
    }
    private void lock(int couponId,,String uuid,String lockKey){
//        String uuid = UUID.randomUUID().toString();
//        String lockKey = "lock:coupon:"+couponId;
        //lua脚本
        String script = "if redis.call('get',KEYS[1]) == ARGV[1] then return redis.call('del',KEYS[1]) else return 0 end";
        Boolean nativeLock = redisTemplate.opsForValue().setIfAbsent(lockKey, uuid, Duration.ofSeconds(30));
        System.out.println("加锁状态");
        if (nativeLock){
//            加锁成功
            try {
                //TODO 做相关业务逻辑
                TimeUnit.SECONDS.sleep(10L);
            } catch (InterruptedException e) {
                e.printStackTrace();
            } finally {
                //解锁
                Long result = redisTemplate.execute(new DefaultRedisscript<>(script, Long.class), Arrays.asList(lockKey), uuid);
                System.out.println(uuid+"解锁状态"+result);
            }
        }else {
            //自旋操作
            try {
                System.out.println("加锁失败,进入自旋");
                TimeUnit.MILLISECONDS.sleep(2000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            lock(couponId,uuid,lockKey);
        }
    }
}