From 3c4fee1db116c11d4f04727cfe076d7c94daeaf2 Mon Sep 17 00:00:00 2001
From: yanzhaofeige <yanzhaofeige@qq.com>
Date: Mon, 30 Sep 2024 12:10:57 +0800
Subject: [PATCH] init
---
cpzidc-framework/src/main/java/com/odcc/cpzidc/framework/aspectj/RateLimiterAspect.java | 89 ++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 89 insertions(+), 0 deletions(-)
diff --git a/cpzidc-framework/src/main/java/com/odcc/cpzidc/framework/aspectj/RateLimiterAspect.java b/cpzidc-framework/src/main/java/com/odcc/cpzidc/framework/aspectj/RateLimiterAspect.java
new file mode 100644
index 0000000..49948df
--- /dev/null
+++ b/cpzidc-framework/src/main/java/com/odcc/cpzidc/framework/aspectj/RateLimiterAspect.java
@@ -0,0 +1,89 @@
+package com.odcc.cpzidc.framework.aspectj;
+
+import java.lang.reflect.Method;
+import java.util.Collections;
+import java.util.List;
+import org.aspectj.lang.JoinPoint;
+import org.aspectj.lang.annotation.Aspect;
+import org.aspectj.lang.annotation.Before;
+import org.aspectj.lang.reflect.MethodSignature;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.data.redis.core.script.RedisScript;
+import org.springframework.stereotype.Component;
+import com.odcc.cpzidc.common.annotation.RateLimiter;
+import com.odcc.cpzidc.common.enums.LimitType;
+import com.odcc.cpzidc.common.exception.ServiceException;
+import com.odcc.cpzidc.common.utils.StringUtils;
+import com.odcc.cpzidc.common.utils.ip.IpUtils;
+
+/**
+ * 限流处理
+ *
+ * @author ruoyi
+ */
+@Aspect
+@Component
+public class RateLimiterAspect
+{
+ private static final Logger log = LoggerFactory.getLogger(RateLimiterAspect.class);
+
+ private RedisTemplate<Object, Object> redisTemplate;
+
+ private RedisScript<Long> limitScript;
+
+ @Autowired
+ public void setRedisTemplate1(RedisTemplate<Object, Object> redisTemplate)
+ {
+ this.redisTemplate = redisTemplate;
+ }
+
+ @Autowired
+ public void setLimitScript(RedisScript<Long> limitScript)
+ {
+ this.limitScript = limitScript;
+ }
+
+ @Before("@annotation(rateLimiter)")
+ public void doBefore(JoinPoint point, RateLimiter rateLimiter) throws Throwable
+ {
+ int time = rateLimiter.time();
+ int count = rateLimiter.count();
+
+ String combineKey = getCombineKey(rateLimiter, point);
+ List<Object> keys = Collections.singletonList(combineKey);
+ try
+ {
+ Long number = redisTemplate.execute(limitScript, keys, count, time);
+ if (StringUtils.isNull(number) || number.intValue() > count)
+ {
+ throw new ServiceException("访问过于频繁，请稍候再试");
+ }
+ log.info("限制请求'{}',当前请求'{}',缓存key'{}'", count, number.intValue(), combineKey);
+ }
+ catch (ServiceException e)
+ {
+ throw e;
+ }
+ catch (Exception e)
+ {
+ throw new RuntimeException("服务器限流异常，请稍候再试");
+ }
+ }
+
+ public String getCombineKey(RateLimiter rateLimiter, JoinPoint point)
+ {
+ StringBuffer stringBuffer = new StringBuffer(rateLimiter.key());
+ if (rateLimiter.limitType() == LimitType.IP)
+ {
+ stringBuffer.append(IpUtils.getIpAddr()).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();
+ }
+}
--
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