com.taotao.cloud.idempotent.aop.IdempotentAspect Maven / Gradle / Ivy
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/*
* Copyright (c) 2020-2030, Shuigedeng ([email protected] & https://blog.taotaocloud.top/).
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.taotao.cloud.idempotent.aop;
import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONObject;
import com.taotao.cloud.common.utils.aop.AopUtils;
import com.taotao.cloud.common.utils.log.LogUtils;
import com.taotao.cloud.idempotent.annotation.Idempotent;
import com.taotao.cloud.idempotent.enums.IdempotentTypeEnum;
import com.taotao.cloud.idempotent.exception.IdempotentException;
import com.taotao.cloud.lock.support.DistributedLock;
import jakarta.servlet.http.HttpServletRequest;
import java.util.concurrent.TimeUnit;
import org.apache.commons.lang.StringUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.After;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.CodeSignature;
import org.springframework.core.annotation.AnnotationUtils;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
/**
* 注解执行器 处理重复请求 和串行指定条件的请求
*
* 两种模式的拦截
*
*
1.rid 是针对每一次请求的 2.key+val 是针对相同参数请求
*
* @author shuigedeng
* @version 2021.9
* @since 2021-09-02 22:00:21
*/
@Aspect
public class IdempotentAspect {
/**
* PER_FIX_KEY
*/
private final ThreadLocal PER_FIX_KEY = new ThreadLocal<>();
/**
* 配置注解后 默认开启
*/
private final boolean enable = true;
/**
* request请求头中的key
*/
private static final String HEADER_RID_KEY = "RID";
/**
* redis中锁的key前缀
*/
private static final String REDIS_KEY_PREFIX = "RID:";
/**
* 锁等待时长
*/
private static final int LOCK_WAIT_TIME = 10;
private final DistributedLock distributedLock;
public IdempotentAspect(DistributedLock distributedLock) {
this.distributedLock = distributedLock;
}
@Pointcut("@annotation(com.taotao.cloud.idempotent.annotation.Idempotent)")
public void watchIde() {}
@Before("watchIde()")
public void doBefore(JoinPoint joinPoint) throws Exception {
Idempotent idempotent = AnnotationUtils.getAnnotation(AopUtils.getMethod(joinPoint), Idempotent.class);
if (enable && null != idempotent) {
ServletRequestAttributes attributes =
(ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
if (null == attributes) {
throw new IdempotentException("请求数据为空");
}
HttpServletRequest request = attributes.getRequest();
// 1.判断模式
if (idempotent.ideTypeEnum() == IdempotentTypeEnum.ALL
|| idempotent.ideTypeEnum() == IdempotentTypeEnum.RID) {
// 2.1.通过rid模式判断是否属于重复提交
// String rid = request.getHeader(HEADER_RID_KEY);
String rid = "111";
try {
if (StringUtils.isNotBlank(rid)) {
// ZLock result = distributedLock.tryLock(
// REDIS_KEY_PREFIX + rid,
// 1,
// 10,
// TimeUnit.SECONDS);
boolean result = distributedLock.tryLock(REDIS_KEY_PREFIX + rid, 10L, TimeUnit.SECONDS);
if (result) {
LogUtils.error("命中RID重复请求");
throw new IdempotentException("重复请求");
}
LogUtils.debug("msg1=当前请求已成功记录,且标记为0未处理,,{}={}", HEADER_RID_KEY, rid);
} else {
LogUtils.warn("msg1=header没有rid,防重复提交功能失效,,remoteHost={}" + request.getRemoteHost());
}
} catch (Exception e) {
LogUtils.error("获取redis锁发生异常", e);
throw new IdempotentException("服务内部错误、请联系管理员");
}
}
if (idempotent.ideTypeEnum() == IdempotentTypeEnum.ALL
|| idempotent.ideTypeEnum() == IdempotentTypeEnum.KEY) {
// 2.2.通过自定义key模式判断是否属于重复提交
String key = idempotent.key();
if (StringUtils.isNotBlank(key)) {
String val = "";
Object[] paramValues = joinPoint.getArgs();
String[] paramNames = ((CodeSignature) joinPoint.getSignature()).getParameterNames();
// 获取自定义key的value
for (int i = 0; i < paramNames.length; i++) {
String params = JSON.toJSONString(paramValues[i]);
if (params.startsWith("{")) {
// 如果是对象
// 通过key获取value
JSONObject jsonObject = JSON.parseObject(params);
val = jsonObject.getString(key);
} else if (key.equals(paramNames[i])) {
// 如果是单个k=v
val = params;
} else {
// 如果自定义的key,在请求参数中没有此参数,说明非法请求
LogUtils.warn("自定义的key,在请求参数中没有此参数,防重复提交功能失效");
}
}
// 判断重复提交的条件
String perFix = idempotent.perFix();
if (StringUtils.isNotBlank(val)) {
perFix = perFix + ":" + val;
try {
// ZLock result = distributedLock.tryLock(perFix,
// 1,
// 10,
// TimeUnit.SECONDS);
boolean result = distributedLock.tryLock(perFix, 10L, TimeUnit.SECONDS);
if (result) {
String targetName =
joinPoint.getTarget().getClass().getName();
String methodName = joinPoint.getSignature().getName();
LogUtils.error(
"不允许重复执行,,key={},,targetName={},,methodName={}",
perFix,
targetName,
methodName);
throw new IdempotentException("不允许重复提交");
}
// 存储在当前线程
PER_FIX_KEY.set(perFix);
LogUtils.info("msg1=当前请求已成功锁定:{}", perFix);
} catch (Exception e) {
LogUtils.error("获取锁发生异常", e);
throw new IdempotentException("服务内部错误、请联系管理员");
}
} else {
LogUtils.warn("自定义的key,在请求参数中value为空,防重复提交功能失效");
}
}
}
}
}
@After("watchIde()")
public void doAfter(JoinPoint joinPoint) throws Throwable {
try {
Idempotent idempotent = AopUtils.getAnnotation(joinPoint, Idempotent.class);
if (enable && null != idempotent) {
if (idempotent.ideTypeEnum() == IdempotentTypeEnum.ALL
|| idempotent.ideTypeEnum() == IdempotentTypeEnum.RID) {
ServletRequestAttributes attributes =
(ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
assert attributes != null;
HttpServletRequest request = attributes.getRequest();
// String rid = request.getHeader(HEADER_RID_KEY);
String rid = "111";
if (StringUtils.isNotBlank(rid)) {
try {
distributedLock.unlock();
// redisService.unLock(REDIS_KEY_PREFIX + rid);
LogUtils.info("msg1=当前请求已成功处理,,rid={}", rid);
PER_FIX_KEY.remove();
} catch (Exception e) {
LogUtils.error("释放redis锁异常", e);
}
}
}
if (idempotent.ideTypeEnum() == IdempotentTypeEnum.ALL
|| idempotent.ideTypeEnum() == IdempotentTypeEnum.KEY) {
// 自定义key
String key = idempotent.key();
if (StringUtils.isNotBlank(key) && StringUtils.isNotBlank(PER_FIX_KEY.get())) {
try {
distributedLock.unlock();
// redisService.unLock(PER_FIX_KEY.get());
LogUtils.info("msg1=当前请求已成功释放,,key={}", PER_FIX_KEY.get());
PER_FIX_KEY.remove();
} catch (Exception e) {
LogUtils.error("释放redis锁异常", e);
}
}
}
}
} catch (Exception e) {
LogUtils.error(e.getMessage(), e);
}
}
}