基于 Redis 实现幂等性操作

src/main/java/cn/iocoder/dashboard/common/exception/enums/GlobalErrorCodeConstants.java

@@ -28,6 +28,9 @@ public interface GlobalErrorCodeConstants {
 
     ErrorCode INTERNAL_SERVER_ERROR = new ErrorCode(500, "系统异常");
 
+    // ========== 自定义错误段 ==========
+    ErrorCode REPEATED_REQUESTS = new ErrorCode(900, "重复请求");
+
     ErrorCode UNKNOWN = new ErrorCode(999, "未知错误");
 
    static boolean isMatch(Integer code) {

src/main/java/cn/iocoder/dashboard/framework/dict/package-info.java

@@ -1,5 +1,5 @@
 /**
- * 字典数据模块
+ * 字典数据模块，提供 {@link cn.iocoder.dashboard.framework.dict.core.util.DictUtils} 工具类
  *
  * 通过将字典缓存在内存中，保证性能
  */

src/main/java/cn/iocoder/dashboard/framework/idempotent/config/IdempotentConfiguration.java

@@ -0,0 +1,42 @@
+package cn.iocoder.dashboard.framework.idempotent.config;
+
+import cn.iocoder.dashboard.framework.idempotent.core.aop.IdempotentAspect;
+import cn.iocoder.dashboard.framework.idempotent.core.keyresolver.DefaultIdempotentKeyResolver;
+import cn.iocoder.dashboard.framework.idempotent.core.keyresolver.ExpressionIdempotentKeyResolver;
+import cn.iocoder.dashboard.framework.idempotent.core.keyresolver.IdempotentKeyResolver;
+import cn.iocoder.dashboard.framework.idempotent.core.redis.IdempotentRedisDAO;
+import org.springframework.boot.autoconfigure.AutoConfigureAfter;
+import org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.redis.core.StringRedisTemplate;
+
+import java.util.List;
+
+@Configuration(proxyBeanMethods = false)
+@AutoConfigureAfter(RedisAutoConfiguration.class)
+public class IdempotentConfiguration {
+
+    @Bean
+    public IdempotentAspect idempotentAspect(List<IdempotentKeyResolver> keyResolvers, IdempotentRedisDAO idempotentRedisDAO) {
+        return new IdempotentAspect(keyResolvers, idempotentRedisDAO);
+    }
+
+    @Bean
+    public IdempotentRedisDAO idempotentRedisDAO(StringRedisTemplate stringRedisTemplate) {
+        return new IdempotentRedisDAO(stringRedisTemplate);
+    }
+
+    // ========== 各种 IdempotentKeyResolver Bean ==========
+
+    @Bean
+    public DefaultIdempotentKeyResolver defaultIdempotentKeyResolver() {
+        return new DefaultIdempotentKeyResolver();
+    }
+
+    @Bean
+    public ExpressionIdempotentKeyResolver expressionIdempotentKeyResolver() {
+        return new ExpressionIdempotentKeyResolver();
+    }
+
+}

src/main/java/cn/iocoder/dashboard/framework/idempotent/core/annotation/Idempotent.java

@@ -0,0 +1,46 @@
+package cn.iocoder.dashboard.framework.idempotent.core.annotation;
+
+import cn.iocoder.dashboard.framework.idempotent.core.keyresolver.DefaultIdempotentKeyResolver;
+import cn.iocoder.dashboard.framework.idempotent.core.keyresolver.IdempotentKeyResolver;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import java.util.concurrent.TimeUnit;
+
+/**
+ * 幂等注解
+ *
+ * @author 芋道源码
+ */
+@Target({ElementType.METHOD})
+@Retention(RetentionPolicy.RUNTIME)
+public @interface Idempotent {
+
+    /**
+     * 幂等的超时时间，默认为 1 秒
+     *
+     * 注意，如果执行时间超过它，请求还是会进来
+     */
+    int timeout() default 1;
+    /**
+     * 时间单位，默认为 SECONDS 秒
+     */
+    TimeUnit timeUnit() default TimeUnit.SECONDS;
+
+    /**
+     * 提示信息，正在执行中的提示
+     */
+    String message() default "重复请求，请稍后重试";
+
+    /**
+     * 使用的 Key 解析器
+     */
+    Class<? extends IdempotentKeyResolver> keyResolver() default DefaultIdempotentKeyResolver.class;
+    /**
+     * 使用的 Key 参数
+     */
+    String keyArg() default "";
+
+}

src/main/java/cn/iocoder/dashboard/framework/idempotent/core/aop/IdempotentAspect.java

@@ -0,0 +1,56 @@
+package cn.iocoder.dashboard.framework.idempotent.core.aop;
+
+import cn.iocoder.dashboard.common.exception.ServiceException;
+import cn.iocoder.dashboard.common.exception.enums.GlobalErrorCodeConstants;
+import cn.iocoder.dashboard.framework.idempotent.core.annotation.Idempotent;
+import cn.iocoder.dashboard.framework.idempotent.core.keyresolver.IdempotentKeyResolver;
+import cn.iocoder.dashboard.framework.idempotent.core.redis.IdempotentRedisDAO;
+import cn.iocoder.dashboard.util.collection.CollectionUtils;
+import lombok.extern.slf4j.Slf4j;
+import org.aspectj.lang.JoinPoint;
+import org.aspectj.lang.annotation.Aspect;
+import org.aspectj.lang.annotation.Before;
+import org.springframework.util.Assert;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * 拦截声明了 {@link Idempotent} 注解的方法，实现幂等操作
+ *
+ * @author 芋道源码
+ */
+@Aspect
+@Slf4j
+public class IdempotentAspect {
+
+    /**
+     * IdempotentKeyResolver 集合
+     */
+    private final Map<Class<? extends IdempotentKeyResolver>, IdempotentKeyResolver> keyResolvers;
+
+    private final IdempotentRedisDAO idempotentRedisDAO;
+
+    public IdempotentAspect(List<IdempotentKeyResolver> keyResolvers, IdempotentRedisDAO idempotentRedisDAO) {
+        this.keyResolvers = CollectionUtils.convertMap(keyResolvers, IdempotentKeyResolver::getClass);
+        this.idempotentRedisDAO = idempotentRedisDAO;
+    }
+
+    @Before("@annotation(idempotent)")
+    public void beforePointCut(JoinPoint joinPoint, Idempotent idempotent) {
+        // 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。
+        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());
+        }
+    }
+
+}

src/main/java/cn/iocoder/dashboard/framework/idempotent/core/keyresolver/DefaultIdempotentKeyResolver.java

@@ -0,0 +1,24 @@
+package cn.iocoder.dashboard.framework.idempotent.core.keyresolver;
+
+import cn.hutool.core.util.StrUtil;
+import cn.hutool.crypto.SecureUtil;
+import cn.iocoder.dashboard.framework.idempotent.core.annotation.Idempotent;
+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
+ *
+ * 为了避免 Key 过长，使用 MD5 进行“压缩”
+ *
+ * @author 芋道源码
+ */
+public class DefaultIdempotentKeyResolver implements IdempotentKeyResolver {
+
+    @Override
+    public String resolver(JoinPoint joinPoint, Idempotent idempotent) {
+        String methodName = joinPoint.getSignature().toString();
+        String argsStr = StrUtil.join(",", joinPoint.getArgs());
+        return SecureUtil.md5(methodName + argsStr);
+    }
+
+}

src/main/java/cn/iocoder/dashboard/framework/idempotent/core/keyresolver/ExpressionIdempotentKeyResolver.java

@@ -0,0 +1,19 @@
+package cn.iocoder.dashboard.framework.idempotent.core.keyresolver;
+
+import cn.iocoder.dashboard.framework.idempotent.core.annotation.Idempotent;
+import org.aspectj.lang.JoinPoint;
+
+/**
+ * 基于 Spring EL 表达式，
+ *
+ * @author 芋道源码
+ */
+public class ExpressionIdempotentKeyResolver implements IdempotentKeyResolver {
+
+    @Override
+    public String resolver(JoinPoint joinPoint, Idempotent idempotent) {
+        // TODO 稍后实现
+        return null;
+    }
+
+}

src/main/java/cn/iocoder/dashboard/framework/idempotent/core/keyresolver/IdempotentKeyResolver.java

@@ -0,0 +1,22 @@
+package cn.iocoder.dashboard.framework.idempotent.core.keyresolver;
+
+import cn.iocoder.dashboard.framework.idempotent.core.annotation.Idempotent;
+import org.aspectj.lang.JoinPoint;
+
+/**
+ * 幂等 Key 解析器接口
+ *
+ * @author 芋道源码
+ */
+public interface IdempotentKeyResolver {
+
+    /**
+     * 解析一个 Key
+     *
+     * @param idempotent 幂等注解
+     * @param joinPoint  AOP 切面
+     * @return Key
+     */
+    String resolver(JoinPoint joinPoint, Idempotent idempotent);
+
+}

src/main/java/cn/iocoder/dashboard/framework/idempotent/core/redis/IdempotentRedisDAO.java

@@ -0,0 +1,34 @@
+package cn.iocoder.dashboard.framework.idempotent.core.redis;
+
+import cn.iocoder.dashboard.framework.redis.core.RedisKeyDefine;
+import lombok.AllArgsConstructor;
+import org.springframework.data.redis.core.StringRedisTemplate;
+
+import java.util.concurrent.TimeUnit;
+
+import static cn.iocoder.dashboard.framework.redis.core.RedisKeyDefine.KeyTypeEnum.STRING;
+
+/**
+ * 幂等 Redis DAO
+ *
+ * @author 芋道源码
+ */
+@AllArgsConstructor
+public class IdempotentRedisDAO {
+
+    private static final RedisKeyDefine IDEMPOTENT = new RedisKeyDefine("幂等操作",
+            "idempotent:%s", // 参数为 uuid
+            STRING, String.class, RedisKeyDefine.TimeoutTypeEnum.DYNAMIC);
+
+    private final StringRedisTemplate redisTemplate;
+
+    public Boolean setIfAbsent(String key, long timeout, TimeUnit timeUnit) {
+        String redisKey = formatKey(key);
+        return redisTemplate.opsForValue().setIfAbsent(redisKey, "", timeout, timeUnit);
+    }
+
+    private static String formatKey(String key) {
+        return String.format(IDEMPOTENT.getKeyTemplate(), key);
+    }
+
+}

src/main/java/cn/iocoder/dashboard/framework/idempotent/package-info.java

@@ -0,0 +1,4 @@
+/**
+ * 幂等组件，参考 https://github.com/it4alla/idempotent 项目实现
+ */
+package cn.iocoder.dashboard.framework.idempotent;

src/main/java/cn/iocoder/dashboard/framework/logger/operatelog/core/annotations/OperateLog.java

@@ -9,6 +9,11 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
+/**
+ * 操作日志注解
+ *
+ * @author 芋道源码
+ */
 @Target({ElementType.METHOD})
 @Retention(RetentionPolicy.RUNTIME)
 public @interface OperateLog {

src/main/java/cn/iocoder/dashboard/modules/infra/controller/config/InfConfigController.java

@@ -4,6 +4,7 @@ import cn.iocoder.dashboard.common.exception.util.ServiceExceptionUtil;
 import cn.iocoder.dashboard.common.pojo.CommonResult;
 import cn.iocoder.dashboard.common.pojo.PageResult;
 import cn.iocoder.dashboard.framework.excel.core.util.ExcelUtils;
+import cn.iocoder.dashboard.framework.idempotent.core.annotation.Idempotent;
 import cn.iocoder.dashboard.modules.infra.controller.config.vo.*;
 import cn.iocoder.dashboard.modules.infra.convert.config.InfConfigConvert;
 import cn.iocoder.dashboard.modules.infra.dal.dataobject.config.InfConfigDO;
@@ -91,7 +92,7 @@ public class InfConfigController {
     @PostMapping("/create")
 //    @PreAuthorize("@ss.hasPermi('infra:config:add')")
 //    @Log(title = "参数管理", businessType = BusinessType.INSERT)
-//    @RepeatSubmit
+    @Idempotent(timeout = 10)
     public CommonResult<Long> createConfig(@Validated @RequestBody InfConfigCreateReqVO reqVO) {
         return success(configService.createConfig(reqVO));
     }
@@ -100,7 +101,8 @@ public class InfConfigController {
     @PutMapping("/update")
 //    @PreAuthorize("@ss.hasPermi('infra:config:edit')")
 //    @Log(title = "参数管理", businessType = BusinessType.UPDATE)
-    public CommonResult<Boolean> edit(@Validated @RequestBody InfConfigUpdateReqVO reqVO) {
+    @Idempotent(timeout = 60)
+    public CommonResult<Boolean> updateConfig(@Validated @RequestBody InfConfigUpdateReqVO reqVO) {
         configService.updateConfig(reqVO);
         return success(true);
     }

src/main/java/cn/iocoder/dashboard/modules/infra/controller/config/vo/InfConfigUpdateReqVO.java

@@ -4,12 +4,14 @@ import io.swagger.annotations.ApiModel;
 import io.swagger.annotations.ApiModelProperty;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
+import lombok.ToString;
 
 import javax.validation.constraints.NotNull;
 
 @ApiModel("参数配置创建 Request VO")
 @Data
 @EqualsAndHashCode(callSuper = true)
+@ToString(callSuper = true)
 public class InfConfigUpdateReqVO extends InfConfigBaseVO {
 
     @ApiModelProperty(value = "参数配置序号", required = true, example = "1024")

src/main/java/cn/iocoder/dashboard/modules/system/dal/redis/SysRedisKeyConstants.java

@@ -12,7 +12,7 @@ import static cn.iocoder.dashboard.framework.redis.core.RedisKeyDefine.KeyTypeEn
  *
  * @author 芋道源码
  */
-public interface RedisKeyConstants {
+public interface SysRedisKeyConstants {
 
     RedisKeyDefine LOGIN_USER = new RedisKeyDefine("登陆用户的缓存",
             "login_user:%s", // 参数为 sessionId

src/main/java/cn/iocoder/dashboard/modules/system/dal/redis/auth/SysLoginUserRedisDAO.java

@@ -7,7 +7,7 @@ import org.springframework.stereotype.Repository;
 
 import javax.annotation.Resource;
 
-import static cn.iocoder.dashboard.modules.system.dal.redis.RedisKeyConstants.LOGIN_USER;
+import static cn.iocoder.dashboard.modules.system.dal.redis.SysRedisKeyConstants.LOGIN_USER;
 
 /**
  * {@link LoginUser} 的 RedisDAO

src/main/java/cn/iocoder/dashboard/modules/system/dal/redis/common/SysCaptchaRedisDAO.java

@@ -6,7 +6,7 @@ import org.springframework.stereotype.Repository;
 import javax.annotation.Resource;
 import java.time.Duration;
 
-import static cn.iocoder.dashboard.modules.system.dal.redis.RedisKeyConstants.CAPTCHA_CODE;
+import static cn.iocoder.dashboard.modules.system.dal.redis.SysRedisKeyConstants.CAPTCHA_CODE;
 
 /**
  * 验证码的 Redis DAO

src/main/resources/application-dev.yaml

@@ -98,6 +98,8 @@ spring:
       # Spring Boot Admin Client 客户端的相关配置
       client:
         url: http://127.0.0.1:${server.port}/${spring.boot.admin.context-path} # 设置 Spring Boot Admin Server 地址
+        instance:
+          prefer-ip: true # 注册实例时，优先使用 IP
       # Spring Boot Admin Server 服务端的相关配置
       context-path: /admin # 配置 Spring
 

src/main/resources/application-local.yaml

@@ -99,7 +99,7 @@ spring:
       client:
         url: http://127.0.0.1:${server.port}/${spring.boot.admin.context-path} # 设置 Spring Boot Admin Server 地址
         instance:
-          prefer-ip: true
+          prefer-ip: true # 注册实例时，优先使用 IP
       # Spring Boot Admin Server 服务端的相关配置
       context-path: /admin # 配置 Spring