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【新增】新增 UserIdempotentKeyResolver 解析器，支持用户级别的幂等

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YunaiV 2024-04-10 20:46:38 +08:00
parent e2c1c7d380
commit 9c1c946edc
9 changed files with 95 additions and 23 deletions
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6
yudao-framework/yudao-spring-boot-starter-protection/src/main/java/cn/iocoder/yudao/framework/idempotent/config/YudaoIdempotentConfiguration.java
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@ -4,6 +4,7 @@ import cn.iocoder.yudao.framework.idempotent.core.aop.IdempotentAspect;
import cn.iocoder.yudao.framework.idempotent.core.keyresolver.impl.DefaultIdempotentKeyResolver;
import cn.iocoder.yudao.framework.idempotent.core.keyresolver.impl.ExpressionIdempotentKeyResolver;
import cn.iocoder.yudao.framework.idempotent.core.keyresolver.IdempotentKeyResolver;
import cn.iocoder.yudao.framework.idempotent.core.keyresolver.impl.UserIdempotentKeyResolver;
import cn.iocoder.yudao.framework.idempotent.core.redis.IdempotentRedisDAO;
import org.springframework.boot.autoconfigure.AutoConfiguration;
import cn.iocoder.yudao.framework.redis.config.YudaoRedisAutoConfiguration;
@ -32,6 +33,11 @@ public class YudaoIdempotentConfiguration {
return new DefaultIdempotentKeyResolver();
}
@Bean
public UserIdempotentKeyResolver userIdempotentKeyResolver() {
return new UserIdempotentKeyResolver();
}
@Bean
public ExpressionIdempotentKeyResolver expressionIdempotentKeyResolver() {
return new ExpressionIdempotentKeyResolver();

17
yudao-framework/yudao-spring-boot-starter-protection/src/main/java/cn/iocoder/yudao/framework/idempotent/core/annotation/Idempotent.java
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@ -2,6 +2,8 @@ package cn.iocoder.yudao.framework.idempotent.core.annotation;
import cn.iocoder.yudao.framework.idempotent.core.keyresolver.impl.DefaultIdempotentKeyResolver;
import cn.iocoder.yudao.framework.idempotent.core.keyresolver.IdempotentKeyResolver;
import cn.iocoder.yudao.framework.idempotent.core.keyresolver.impl.ExpressionIdempotentKeyResolver;
import cn.iocoder.yudao.framework.idempotent.core.keyresolver.impl.UserIdempotentKeyResolver;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
@ -36,6 +38,10 @@ public @interface Idempotent {
/**
* 使用的 Key 解析器
*
* @see DefaultIdempotentKeyResolver 全局级别
* @see UserIdempotentKeyResolver 用户级别
* @see ExpressionIdempotentKeyResolver 自定义表达式，通过 {@link #keyArg()} 计算
*/
Class<? extends IdempotentKeyResolver> keyResolver() default DefaultIdempotentKeyResolver.class;
/**
@ -43,4 +49,15 @@ public @interface Idempotent {
*/
String keyArg() default "";
/**
* 删除 Key，当发生异常时候
*
* 问题：为什么发生异常时，需要删除 Key 呢？
* 回答：发生异常时，说明业务发生错误，此时需要删除 Key，避免下次请求无法正常执行。
*
* 问题：为什么不搞 deleteWhenSuccess 执行成功时，需要删除 Key 呢？
* 回答：这种情况下，本质上是分布式锁，推荐使用 @Lock4j 注解
*/
boolean deleteKeyWhenException() default true;
}

24
yudao-framework/yudao-spring-boot-starter-protection/src/main/java/cn/iocoder/yudao/framework/idempotent/core/aop/IdempotentAspect.java
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@ -2,14 +2,14 @@ package cn.iocoder.yudao.framework.idempotent.core.aop;
import cn.iocoder.yudao.framework.common.exception.ServiceException;
import cn.iocoder.yudao.framework.common.exception.enums.GlobalErrorCodeConstants;
import cn.iocoder.yudao.framework.common.util.collection.CollectionUtils;
import cn.iocoder.yudao.framework.idempotent.core.annotation.Idempotent;
import cn.iocoder.yudao.framework.idempotent.core.keyresolver.IdempotentKeyResolver;
import cn.iocoder.yudao.framework.idempotent.core.redis.IdempotentRedisDAO;
import cn.iocoder.yudao.framework.common.util.collection.CollectionUtils;
import lombok.extern.slf4j.Slf4j;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.springframework.util.Assert;
import java.util.List;
@ -36,21 +36,33 @@ public class IdempotentAspect {
this.idempotentRedisDAO = idempotentRedisDAO;
}
@Before("@annotation(idempotent)")
public void beforePointCut(JoinPoint joinPoint, Idempotent idempotent) {
@Around(value = "@annotation(idempotent)")
public Object beforePointCut(ProceedingJoinPoint joinPoint, Idempotent idempotent) throws Throwable {
// 获得 IdempotentKeyResolver
IdempotentKeyResolver keyResolver = keyResolvers.get(idempotent.keyResolver());
Assert.notNull(keyResolver, "找不到对应的 IdempotentKeyResolver");
// 解析 Key
String key = keyResolver.resolver(joinPoint, idempotent);
// 锁定 Key。
// 1. 锁定 Key
boolean success = idempotentRedisDAO.setIfAbsent(key, idempotent.timeout(), idempotent.timeUnit());
// 锁定失败，抛出异常
if (!success) {
log.info("[beforePointCut][方法({}) 参数({}) 存在重复请求]", joinPoint.getSignature().toString(), joinPoint.getArgs());
throw new ServiceException(GlobalErrorCodeConstants.REPEATED_REQUESTS.getCode(), idempotent.message());
}
// 2. 执行逻辑
try {
return joinPoint.proceed();
} catch (Throwable throwable) {
// 3. 异常时，删除 Key
// 参考美团 GTIS 思路：https://tech.meituan.com/2016/09/29/distributed-system-mutually-exclusive-idempotence-cerberus-gtis.html
if (idempotent.deleteKeyWhenException()) {
idempotentRedisDAO.delete(key);
}
throw throwable;
}
}
}

2
yudao-framework/yudao-spring-boot-starter-protection/src/main/java/cn/iocoder/yudao/framework/idempotent/core/keyresolver/impl/DefaultIdempotentKeyResolver.java
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@ -7,7 +7,7 @@ import cn.iocoder.yudao.framework.idempotent.core.keyresolver.IdempotentKeyResol
import org.aspectj.lang.JoinPoint;
/**
* 默认幂等 Key 解析器，使用方法名 + 方法参数，组装成一个 Key
* 默认（全局级别）幂等 Key 解析器，使用方法名 + 方法参数，组装成一个 Key
*
* 为了避免 Key 过长，使用 MD5 进行“压缩”
*

28
yudao-framework/yudao-spring-boot-starter-protection/src/main/java/cn/iocoder/yudao/framework/idempotent/core/keyresolver/impl/UserIdempotentKeyResolver.java Normal file
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@ -0,0 +1,28 @@
package cn.iocoder.yudao.framework.idempotent.core.keyresolver.impl;
import cn.hutool.core.util.StrUtil;
import cn.hutool.crypto.SecureUtil;
import cn.iocoder.yudao.framework.idempotent.core.annotation.Idempotent;
import cn.iocoder.yudao.framework.idempotent.core.keyresolver.IdempotentKeyResolver;
import cn.iocoder.yudao.framework.web.core.util.WebFrameworkUtils;
import org.aspectj.lang.JoinPoint;
/**
* 用户级别的幂等 Key 解析器，使用方法名 + 方法参数 + userId + userType，组装成一个 Key
*
* 为了避免 Key 过长，使用 MD5 进行“压缩”
*
* @author 芋道源码
*/
public class UserIdempotentKeyResolver implements IdempotentKeyResolver {
@Override
public String resolver(JoinPoint joinPoint, Idempotent idempotent) {
String methodName = joinPoint.getSignature().toString();
String argsStr = StrUtil.join(",", joinPoint.getArgs());
Long userId = WebFrameworkUtils.getLoginUserId();
Integer userType = WebFrameworkUtils.getLoginUserType();
return SecureUtil.md5(methodName + argsStr + userId + userType);
}
}

5
yudao-framework/yudao-spring-boot-starter-protection/src/main/java/cn/iocoder/yudao/framework/idempotent/core/redis/IdempotentRedisDAO.java
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@ -29,6 +29,11 @@ public class IdempotentRedisDAO {
return redisTemplate.opsForValue().setIfAbsent(redisKey, "", timeout, timeUnit);
}
public void delete(String key) {
String redisKey = formatKey(key);
redisTemplate.delete(redisKey);
}
private static String formatKey(String key) {
return String.format(IDEMPOTENT, key);
}

12
yudao-framework/yudao-spring-boot-starter-web/src/main/java/cn/iocoder/yudao/framework/jackson/config/YudaoJacksonAutoConfiguration.java
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@ -2,9 +2,9 @@ package cn.iocoder.yudao.framework.jackson.config;
import cn.hutool.core.collection.CollUtil;
import cn.iocoder.yudao.framework.common.util.json.JsonUtils;
import cn.iocoder.yudao.framework.jackson.core.databind.LocalDateTimeDeserializer;
import cn.iocoder.yudao.framework.jackson.core.databind.LocalDateTimeSerializer;
import cn.iocoder.yudao.framework.jackson.core.databind.NumberSerializer;
import cn.iocoder.yudao.framework.jackson.core.databind.TimestampLocalDateTimeDeserializer;
import cn.iocoder.yudao.framework.jackson.core.databind.TimestampLocalDateTimeSerializer;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.fasterxml.jackson.datatype.jsr310.deser.LocalDateDeserializer;
@ -37,13 +37,13 @@ public class YudaoJacksonAutoConfiguration {
.addDeserializer(LocalDate.class, LocalDateDeserializer.INSTANCE)
.addSerializer(LocalTime.class, LocalTimeSerializer.INSTANCE)
.addDeserializer(LocalTime.class, LocalTimeDeserializer.INSTANCE)
// 新增 LocalDateTime 序列化、反序列化规则
.addSerializer(LocalDateTime.class, LocalDateTimeSerializer.INSTANCE)
.addDeserializer(LocalDateTime.class, LocalDateTimeDeserializer.INSTANCE);
// 新增 LocalDateTime 序列化、反序列化规则，使用 Long 时间戳
.addSerializer(LocalDateTime.class, TimestampLocalDateTimeSerializer.INSTANCE)
.addDeserializer(LocalDateTime.class, TimestampLocalDateTimeDeserializer.INSTANCE);
// 1.2 注册到 objectMapper
objectMappers.forEach(objectMapper -> objectMapper.registerModule(simpleModule));
// 2. 设置 objectMapper 到 JsonUtils {
// 2. 设置 objectMapper 到 JsonUtils
JsonUtils.init(CollUtil.getFirst(objectMappers));
log.info("[init][初始化 JsonUtils 成功]");
return new JsonUtils();

12
yudao-framework/yudao-spring-boot-starter-web/src/main/java/cn/iocoder/yudao/framework/jackson/core/databind/LocalDateTimeDeserializer.java → yudao-framework/yudao-spring-boot-starter-web/src/main/java/cn/iocoder/yudao/framework/jackson/core/databind/TimestampLocalDateTimeDeserializer.java
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@ -10,16 +10,18 @@ import java.time.LocalDateTime;
import java.time.ZoneId;
/**
* LocalDateTime反序列化规则
* <p>
* 会将毫秒级时间戳反序列化为LocalDateTime
* 基于时间戳的 LocalDateTime 反序列化器
*
* @author 老五
*/
public class LocalDateTimeDeserializer extends JsonDeserializer<LocalDateTime> {
public class TimestampLocalDateTimeDeserializer extends JsonDeserializer<LocalDateTime> {
public static final LocalDateTimeDeserializer INSTANCE = new LocalDateTimeDeserializer();
public static final TimestampLocalDateTimeDeserializer INSTANCE = new TimestampLocalDateTimeDeserializer();
@Override
public LocalDateTime deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
// 将 Long 时间戳，转换为 LocalDateTime 对象
return LocalDateTime.ofInstant(Instant.ofEpochMilli(p.getValueAsLong()), ZoneId.systemDefault());
}
}

12
yudao-framework/yudao-spring-boot-starter-web/src/main/java/cn/iocoder/yudao/framework/jackson/core/databind/LocalDateTimeSerializer.java → yudao-framework/yudao-spring-boot-starter-web/src/main/java/cn/iocoder/yudao/framework/jackson/core/databind/TimestampLocalDateTimeSerializer.java
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@ -9,16 +9,18 @@ import java.time.LocalDateTime;
import java.time.ZoneId;
/**
* LocalDateTime序列化规则
* <p>
* 会将LocalDateTime序列化为毫秒级时间戳
* 基于时间戳的 LocalDateTime 序列化器
*
* @author 老五
*/
public class LocalDateTimeSerializer extends JsonSerializer<LocalDateTime> {
public class TimestampLocalDateTimeSerializer extends JsonSerializer<LocalDateTime> {
public static final LocalDateTimeSerializer INSTANCE = new LocalDateTimeSerializer();
public static final TimestampLocalDateTimeSerializer INSTANCE = new TimestampLocalDateTimeSerializer();
@Override
public void serialize(LocalDateTime value, JsonGenerator gen, SerializerProvider serializers) throws IOException {
// 将 LocalDateTime 对象，转换为 Long 时间戳
gen.writeNumber(value.atZone(ZoneId.systemDefault()).toInstant().toEpochMilli());
}
}