增加了幂等控制

This commit is contained in:
ajaxfan
2021-02-17 15:09:52 +08:00
parent 0dbd56bf2d
commit a9986bd5f7
2 changed files with 162 additions and 0 deletions

View File

@ -0,0 +1,38 @@
package com.chinaunicom.mall.ebtp.common.idempotent.annotation;
import java.lang.annotation.*;
import java.util.concurrent.TimeUnit;
/**
* @author ITyunqing
*/
@Inherited
@Target(ElementType.METHOD)
@Retention(value = RetentionPolicy.RUNTIME)
public @interface Idempotent {
/**
* 有效期 默认1 有效期要大于程序执行时间,否则请求还是可能会进来
* @return expireTime
*/
int expireTime() default 1;
/**
* 时间单位 默认s
* @return TimeUnit
*/
TimeUnit timeUnit() default TimeUnit.SECONDS;
/**
* 提示信息,可自定义
* @return String
*/
String info() default "重复请求,请稍后重试";
/**
* 是否在业务完成后删除key true:删除 false:不删除
* @return boolean
*/
boolean delKey() default false;
}

View File

@ -0,0 +1,124 @@
package com.chinaunicom.mall.ebtp.common.idempotent.aspect;
import com.chinaunicom.mall.ebtp.common.exception.common.CommonExceptionEnum;
import com.chinaunicom.mall.ebtp.common.idempotent.annotation.Idempotent;
import com.chinaunicom.mall.ebtp.common.util.JsonUtils;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.*;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.stereotype.Component;
import org.springframework.util.CollectionUtils;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import javax.servlet.http.HttpServletRequest;
import java.lang.reflect.Method;
import java.time.LocalDateTime;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;
/**
* The Idempotent Aspect
*
* @author ITyunqing
*/
@Slf4j
@Component
@Aspect
public class IdempotentAspect {
private static final ThreadLocal<Map<String, Object>> THREAD_CACHE = ThreadLocal.withInitial(HashMap::new);
private static final String RMAPCACHE_KEY = "idempotent";
private static final String KEY = "key";
private static final String DELKEY = "delKey";
@Autowired
@Qualifier("redisTempletToken")
private RedisTemplate<String, Object> redisTempletToken;
@Pointcut("@annotation(com.chinaunicom.mall.ebtp.common.idempotent.annotation.Idempotent)")
public void pointCut() {
}
@Before("pointCut()")
public void beforePointCut(JoinPoint joinPoint) {
ServletRequestAttributes requestAttributes = (ServletRequestAttributes) RequestContextHolder
.getRequestAttributes();
assert requestAttributes != null;
HttpServletRequest request = requestAttributes.getRequest();
MethodSignature signature = (MethodSignature) joinPoint.getSignature();
Method method = signature.getMethod();
if (!method.isAnnotationPresent(Idempotent.class)) {
return;
}
Idempotent idempotent = method.getAnnotation(Idempotent.class);
/*key : url + 参数列表作为区分*/
String url = request.getRequestURL().toString();
String argString = JsonUtils.objectToJson(Arrays.asList(joinPoint.getArgs()));
assert argString != null;
String redisKey = String.valueOf(argString.hashCode());
String key = url.concat(":").concat(redisKey);
long expireTime = idempotent.expireTime();
String info = idempotent.info();
TimeUnit timeUnit = idempotent.timeUnit();
boolean delKey = idempotent.delKey();
// do not need check null
Map<Object, Object> rMapCache = redisTempletToken.opsForHash().entries(RMAPCACHE_KEY);
String value = LocalDateTime.now().toString().replace("T", " ");
if (null != rMapCache.get(key)) {
// had stored
CommonExceptionEnum.FRAME_EXCEPTION_COMMON_DATA_OTHER_ERROR.customValidName("[idempotent]:" + info,true);
}
synchronized (this) {
boolean submitAble = redisTempletToken.opsForValue().setIfAbsent(key, value,expireTime,timeUnit);
if (!submitAble) {
CommonExceptionEnum.FRAME_EXCEPTION_COMMON_DATA_OTHER_ERROR.customValidName("[idempotent]:" + info,true);
}
else {
log.info("[idempotent]:has stored key={},value={},expireTime={}{},now={}", key, value, expireTime,
timeUnit, LocalDateTime.now().toString());
}
}
Map<String, Object> map = THREAD_CACHE.get();
map.put(KEY, key);
map.put(DELKEY, delKey);
}
@After("pointCut()")
public void afterPointCut(JoinPoint joinPoint) {
Map<String, Object> map = THREAD_CACHE.get();
if (CollectionUtils.isEmpty(map)) {
return;
}
Map<Object, Object> mapCache = redisTempletToken.opsForHash().entries(RMAPCACHE_KEY);
if (mapCache.size() == 0) {
return;
}
String key = map.get(KEY).toString();
boolean delKey = (boolean) map.get(DELKEY);
if (delKey) {
mapCache.remove(key);
log.info("[idempotent]:has removed key={}", key);
}
THREAD_CACHE.remove();
}
}