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add 增加 集群限流功能

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疯狂的狮子li 2021-09-17 17:22:45 +08:00
parent 30fe14c0ff
commit dcaeb18870
2 changed files with 28 additions and 7 deletions
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7
ruoyi-common/src/main/java/com/ruoyi/common/enums/LimitType.java
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@ -16,5 +16,10 @@ public enum LimitType
/**
* 根据请求者IP进行限流
*/
IP
IP,
/**
* 实例限流(集群多后端实例)
*/
CLUSTER
}

28
ruoyi-framework/src/main/java/com/ruoyi/framework/aspectj/RateLimiterAspect.java
View File

@ -4,6 +4,7 @@ import com.ruoyi.common.annotation.RateLimiter;
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;
@ -34,20 +35,19 @@ public class RateLimiterAspect {
@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) {
@ -69,4 +69,20 @@ public class RateLimiterAspect {
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();
}
}