| | |
| | | import com.ruoyi.common.enums.LimitType; |
| | | import com.ruoyi.common.exception.ServiceException; |
| | | import com.ruoyi.common.utils.RedisUtils; |
| | | import com.ruoyi.common.utils.ServletUtils; |
| | | import lombok.extern.slf4j.Slf4j; |
| | | import org.aspectj.lang.JoinPoint; |
| | | import org.aspectj.lang.Signature; |
| | |
| | | @Before("rateLimiterPointCut()") |
| | | public void doBefore(JoinPoint point) throws Throwable { |
| | | RateLimiter rateLimiter = getAnnotationRateLimiter(point); |
| | | String key = rateLimiter.key(); |
| | | int time = rateLimiter.time(); |
| | | int count = rateLimiter.count(); |
| | | |
| | | String combineKey = getCombineKey(rateLimiter, point); |
| | | try { |
| | | RateType rateType = RateType.OVERALL; |
| | | if (rateLimiter.limitType() == LimitType.IP) { |
| | | if (rateLimiter.limitType() == LimitType.CLUSTER) { |
| | | rateType = RateType.PER_CLIENT; |
| | | } |
| | | // 返回 false 说明 获取令牌失败 |
| | | if (!RedisUtils.rateLimiter(key, rateType, count, time)) { |
| | | long number = RedisUtils.rateLimiter(combineKey, rateType, count, time); |
| | | if (number == -1) { |
| | | throw new ServiceException("访问过于频繁,请稍后再试"); |
| | | } |
| | | log.info("限制请求'{}',缓存key'{}'", count, key); |
| | | log.info("限制令牌 => {}, 剩余令牌 => {}, 缓存key => '{}'", count, number, combineKey); |
| | | } catch (ServiceException e) { |
| | | throw e; |
| | | } catch (Exception e) { |
| | |
| | | return null; |
| | | } |
| | | |
| | | public String getCombineKey(RateLimiter rateLimiter, JoinPoint point) { |
| | | StringBuilder stringBuffer = new StringBuilder(rateLimiter.key()); |
| | | if (rateLimiter.limitType() == LimitType.IP) { |
| | | // 获取请求ip |
| | | stringBuffer.append(ServletUtils.getClientIP()).append("-"); |
| | | } else if (rateLimiter.limitType() == LimitType.CLUSTER){ |
| | | // 获取客户端实例id |
| | | stringBuffer.append(RedisUtils.getClientId()).append("-"); |
| | | } |
| | | MethodSignature signature = (MethodSignature) point.getSignature(); |
| | | Method method = signature.getMethod(); |
| | | Class<?> targetClass = method.getDeclaringClass(); |
| | | stringBuffer.append(targetClass.getName()).append("-").append(method.getName()); |
| | | return stringBuffer.toString(); |
| | | } |
| | | |
| | | } |