541 lines
25 KiB
C#
541 lines
25 KiB
C#
using Newtonsoft.Json;
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using Qdp.Foundation.Utilities;
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using System.Reflection;
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using YLErp.BLL;
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using YLErp.Model;
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/*
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================================================================================
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风控引擎服务 — RiskEngineService 技术方案与当前实现说明
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================================================================================
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【项目背景】
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当前 TRS 系统已在 QuotaMonitorService 中接入第一版风控引擎，用于在交易关键
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时点执行可配置规则判断。当前目标不是一次性做成最终版，而是在最小可运行链路
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跑通后，逐步演进为可由前端配置、后端预编译、执行期直接命中的正式版本。
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【当前实现口径】（以本注释和实际代码为准）
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核心概念：
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- RiskRule（风控规则）：规则定义本体，当前重点字段包括 Id、RuleName、
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RuleText、RuleExpr、Version、CompiledScript。
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- RiskRuleApplication（规则应用）：与规则分离，承载启用状态、控制策略、触发时点、
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适用范围（全局 / 账户 / 客户 / 标的类型 / 合约类型）。
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- RuleExpr：当前唯一主编译入口。要求内容是 Roslyn 可直接执行的 C# bool 表达式，
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例如直接访问 DataMap["trade"] 后做数值或日期比较。
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- ConditionJson：当前已在规则定义中保留，但不参与主执行链路。
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- RiskContext：一次风控检查的数据上下文，包含 TradeId、TriggerPoint 和 DataMap。
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- RuleCompiledCache：进程内编译结果缓存，按规则 Id 缓存 Func<RiskContext, bool>。
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当前编译流程：
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1. 外部准备好规则对象，在 RuleExpr 中直接写最终可执行表达式
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2. 调用 RuleCompiler.ValidateAndCompileRule(rule)
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3. 内部使用 Roslyn 编译 RuleExpr，生成 Func<RiskContext, bool>
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4. 编译成功后写入 rule.CompiledScript，并同步写入 RuleCompiledCache
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5. 执行阶段优先从 RuleCompiledCache 取委托执行
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当前执行流程（EvaluateRisk）：
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1. 从数据库加载规则列表和应用列表
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2. 按应用状态、TriggerPoints 过滤有效应用
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3. 按应用范围过滤交易是否命中（全局 / 账户 / 客户 / 标的类型 / 合约类型）
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4. 根据应用配置中的 RuleIds 找到对应规则 Id 并关联规则
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5. 优先从 RuleCompiledCache 读取已编译委托，未命中时兜底编译一次
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6. 执行规则委托，按 ControlStrategy 聚合为 Blocked / NeedApproval / Warnings
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7. 返回 RiskResult
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当前维度匹配规则：
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- 全局：ScopeIsGlobal=true 时直接命中
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- 同一维度内多选：并集（OR）
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- 不同维度之间：交集（AND）
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- 某维度留空：视为该维度不限制
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【与早期方案的主要差异】
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- 当前不是 Content 解析或表达式树主导，而是 RuleExpr 直编译主导
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- RiskRule 与 RiskRuleApplication 当前仍是分离模型，没有合并
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- 编译器文件已放入 RiskEngine/Compile 目录下
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- 当前已引入 RuleCompileResult、RuleCompiledCache，用于校验结果与进程内缓存
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- Rule2 这类“左值与右值都来自对象字段”的规则，当前通过 RuleExpr 直接表达
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【当前代码结构】
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风控引擎层：YLErpDAL/Modules/RiskEngine/
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- RiskEngineService.cs：执行入口，负责规则筛选、应用过滤、委托执行、结果聚合
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- RiskRule.cs：规则定义模型，含 CompiledScript 运行时字段
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- RiskRuleApplication.cs：规则应用模型，承载策略、触发点和适用范围
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- RiskContext.cs / RiskResult.cs：执行上下文与结果模型
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编译相关：YLErpDAL/Modules/RiskEngine/Compile/
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- RuleCompiler.cs：Roslyn 编译入口，提供 ValidateAndCompileFormula / ValidateAndCompileRule
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- RuleCompileResult.cs：编译结果模型
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- RuleCompiledCache.cs：编译结果缓存
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当前集成点：
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- QuotaMonitorService.cs：构造 RiskContext，并将 trade 对象放入 DataMap["trade"]
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【当前进度】（截至 2026-06-24）
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✅ 已完成：
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1. RiskEngine 第一版执行链路已跑通：QuotaMonitorService -> RiskEngineService -> RuleCompiler
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2. 风控上下文通过 DataMap 传入 trade 对象，支持规则脚本直接访问交易字段
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3. RuleExpr 直编译方案已接入，支持数值比较和日期比较
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4. Application 通用维度匹配已支持：全局 / 账户 / 客户 / 标的类型 / 合约类型
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5. 维度组合逻辑已按文档确认：同维度 OR，不同维度 AND
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6. RuleCompiler 已支持校验 + 编译 + 写缓存
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7. RuleCompiledCache / RuleCompileResult 已落地到 Compile 目录
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8. RiskEngineService 已改为执行时优先从 RuleCompiledCache 读取委托
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【待办事项 / TODO】
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⬜ 1. 接入真实规则来源
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- 由数据库或前端提交替换当前 LoadRules / LoadApplications 的规则来源
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⬜ 2. 增加接口层
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- 提供前端提交 RuleExpr 后的校验接口
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- 提供规则保存 / 发布后预编译并写缓存的入口
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⬜ 3. 启动预热与缓存刷新
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- 服务启动时批量加载有效规则并预编译
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- 支持规则更新后的缓存刷新 / 删除
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⬜ 4. 完善执行期策略
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- 当前保留“缓存未命中时兜底编译”逻辑
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- 后续可收紧为“执行期只读缓存，未命中按发布失败处理”
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⬜ 5. 补测试样例
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- 数值比较、日期比较、维度过滤、非法公式、边界值
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⬜ 6. 完善 RuleExpr 配套能力
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- 提供前端可用的表达式编辑、校验与错误提示
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- 约束可用变量、类型转换和脚本安全边界
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【注意事项】
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1. 当前 RuleExpr 必须是 Roslyn 最终可执行的 C# bool 表达式，不是业务语义短句
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2. DataMap 中的值由宿主业务代码准备，编译器与执行器本身不负责查库补数
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3. 当前缓存的是 Func<RiskContext, bool>，这是规则判断函数，不是事件处理器
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4. 业务可预期失败优先走结果返回，不要把高频校验失败都设计成异常
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================================================================================
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*/
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namespace YLErp.Modules.RiskEngine
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{
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/// <summary>
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/// 风控引擎服务（第一版 — 骨架版，先跑通）
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/// </summary>
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public class RiskEngineService : YLBaseService
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{
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IYcLogger _logger = LogFactory.GetLogger("RiskEngineService");
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private static readonly Lazy<RiskEngineService> _instance =
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new Lazy<RiskEngineService>(() => new RiskEngineService());
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public static RiskEngineService GetInstance() => _instance.Value;
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private RiskEngineService() : base(OptUserInfo.SystemUser)
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{
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}
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public RiskEngineService(OptUserInfo userInfo) : base(userInfo)
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{
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}
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public RiskEngineService(YLBaseService baseService) : base(baseService)
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{
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}
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public RiskEngineService(OptUserInfo optUser, YLContext dbContext) : base(optUser, dbContext)
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{
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}
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public void RefreshCache()
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{
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_logger.Info("[风控引擎] RefreshCache 被调用（当前为桩实现，待缓存机制完成后替换）");
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}
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/// <summary>
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/// 执行风控检查（最终设计版：预编译委托 + 规则筛选 + 策略判定）
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/// </summary>
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/// <param name="context">风控上下文</param>
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/// <param name="triggerPoint">触发时点，如 BOOK_CONFIRM</param>
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/// <returns>风控结果</returns>
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public RiskResult EvaluateRisk(RiskContext context, string triggerPoint)
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{
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var result = new RiskResult();
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try
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{
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_logger.Info($"[风控引擎] EvaluateRisk 开始 - TradeId: {context?.TradeId}, TriggerPoint: {triggerPoint}");
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// ============================================================
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// Step 1: 加载规则定义和规则应用（TODO: 后续接入真实内存缓存）
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// ============================================================
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var rules = LoadRules();
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var applications = LoadApplications();
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_logger.Info($"[风控引擎] 加载规则数: {rules.Count}, 应用数: {applications.Count}");
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// ============================================================
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// Step 2: 先按 Application 过滤 Active 状态和 TriggerPoint 匹配的应用
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// ============================================================
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var activeApps = applications
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.Where(a => a.Status == RiskRuleStatus.Active)
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.ToList();
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var apps = activeApps
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.Where(a => !string.IsNullOrEmpty(a.TriggerPoints))
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.ToList();
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var triggerMatchedApps = apps
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.Where(a => a.TriggerPoints.Split(',', StringSplitOptions.RemoveEmptyEntries)
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.Select(s => s.Trim())
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.Contains(triggerPoint))
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.ToList();
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// 再按应用范围过滤。
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// 统一走通用维度匹配：
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// 1. 全局命中时直接通过；
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// 2. 同一维度内多选按并集处理；
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// 3. 不同维度之间按交集处理；
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// 4. 某维度留空表示该维度不限制。
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var trade = context?.DataMap != null && context.DataMap.ContainsKey("trade")
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? context.DataMap["trade"] as YLErp.DBModels.trade
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: null;
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var matchedApplications = triggerMatchedApps
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.Where(a => IsApplicationMatched(a, trade))
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.ToList();
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_logger.Info($"[风控引擎] 匹配 TriggerPoint 的应用数: {matchedApplications.Count}");
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// ============================================================
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// Step 3: 遍历匹配的应用，通过 RuleIds 关联规则并执行预编译委托
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// ============================================================
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foreach (var application in matchedApplications)
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{
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// ------------------------------------------------------------
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// 3.1 通过 RuleIds 关联规则定义
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// ------------------------------------------------------------
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var applicationRuleIds = ParseRuleIds(application.RuleIds);
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if (!applicationRuleIds.Any())
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{
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_logger.Info($"[风控引擎] 应用未配置有效规则 - RuleIds: {application.RuleIds}");
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continue;
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}
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var applicationRules = rules
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.Where(r => applicationRuleIds.Contains(r.Id) && r.Id == 3)
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.ToList();
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var missingRuleIds = applicationRuleIds
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.Where(ruleId => applicationRules.All(r => r.Id != ruleId))
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.ToList();
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foreach (var missingRuleId in missingRuleIds)
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{
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_logger.Info($"[风控引擎] 未找到对应规则定义 - RuleId: {missingRuleId}, ApplicationRuleIds: {application.RuleIds}");
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}
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foreach (var rule in applicationRules)
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{
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var ruleId = rule.Id.ToString();
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// ------------------------------------------------------------
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// 3.2 优先从编译缓存读取规则委托
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// ------------------------------------------------------------
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if (!RuleCompiledCache.TryGet(ruleId, out var compiledScript))
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{
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_logger.Info($"[风控引擎] 缓存中未命中已编译规则，执行兜底编译 - RuleId: {rule.Id}");
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var compileResult = RuleCompiler.ValidateAndCompileRule(rule);
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if (!compileResult.Success)
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{
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_logger.Info($"[风控引擎] 规则编译失败 - RuleId: {rule.Id}, Error: {compileResult.ErrorMessage}");
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continue;
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}
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compiledScript = compileResult.CompiledScript;
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}
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// ------------------------------------------------------------
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// 3.3 执行预编译委托
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// ------------------------------------------------------------
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bool triggered = false;
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try
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{
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triggered = compiledScript(context);
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_logger.Info($"[风控引擎] 规则执行 - RuleId: {rule.Id}, Triggered: {triggered}");
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}
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catch (Exception ex)
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{
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_logger.Info($"[风控引擎] 规则执行异常 - RuleId: {rule.Id}, Error: {ex.Message}");
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continue;
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}
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// ------------------------------------------------------------
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// 3.4 命中后按 Application 的控制策略聚合结果
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// ------------------------------------------------------------
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if (triggered)
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{
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_logger.Info($"[风控引擎] 规则触发 - RuleId: {rule.Id}, Strategy: {application.ControlStrategy}");
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switch (application.ControlStrategy)
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{
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case RiskControlStrategy.Block:
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result.Blocked = true;
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result.Passed = false;
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result.TriggeredRules.Add(new TriggeredRuleInfo
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{
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RuleId = rule.Id.ToString(),
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RuleName = rule.RuleName,
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ControlStrategy = RiskControlStrategy.Block,
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RuleText = rule.RuleText,
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Message = $"规则[{rule.RuleName}]触发：禁止"
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});
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break;
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case RiskControlStrategy.Approval:
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result.NeedApproval = true;
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result.Passed = false;
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result.TriggeredRules.Add(new TriggeredRuleInfo
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{
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RuleId = ruleId,
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RuleName = rule.RuleName,
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ControlStrategy = RiskControlStrategy.Approval,
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RuleText = rule.RuleText,
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Message = $"规则[{rule.RuleName}]触发：需审批"
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});
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break;
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case RiskControlStrategy.ShowTip:
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result.ShowTip = true;
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result.TriggeredRules.Add(new TriggeredRuleInfo
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{
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RuleId = ruleId,
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RuleName = rule.RuleName,
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ControlStrategy = RiskControlStrategy.ShowTip,
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RuleText = rule.RuleText,
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Message = $"规则[{rule.RuleName}]触发：提示"
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});
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break;
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default:
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_logger.Info($"[风控引擎] 未知策略类型 - ControlStrategy: {application.ControlStrategy}");
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break;
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}
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}
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else
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{
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_logger.Info($"[风控引擎] 规则未触发 - RuleId: {rule.Id}, TriggerPoint: {triggerPoint}");
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}
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}
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}
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// ============================================================
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// Step 4: 聚合最终结果
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// ============================================================
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if (!result.Blocked && !result.NeedApproval)
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{
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result.Passed = true;
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}
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else
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{
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result.Passed = false;
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}
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_logger.Info($"[风控引擎] EvaluateRisk 完成 - TradeId: {context?.TradeId}, Passed: {result.Passed}, Blocked: {result.Blocked}, NeedApproval: {result.NeedApproval}, TriggeredRules: {result.TriggeredRules.Count}");
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}
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catch (Exception ex)
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{
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result.NeedApproval = true;
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result.Passed = false;
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result.TriggeredRules.Add(new TriggeredRuleInfo
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{
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RuleId = "ENGINE_ERROR",
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RuleName = "风控引擎执行异常",
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RuleText = ex.Message,
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Message = $"风控引擎异常：{ex.Message}"
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});
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_logger.Error($"[风控引擎] EvaluateRisk 异常 - TradeId: {context?.TradeId}, Error: {ex.Message}");
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}
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return result;
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}
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|
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/// <summary>
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/// 加载规则列表（TODO: 后续接入真实内存缓存）
|
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/// 当前从数据库读取规则用于验证流程
|
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/// </summary>
|
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private List<RiskRule> LoadRules()
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{
|
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var rules = DbContext.glms_risk_rule
|
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.AsNoTracking()
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.Where(r => r.Status != RiskRuleStatus.Deleted)
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.OrderByDescending(r => r.UpdateDate ?? r.OptDate)
|
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.Select(r => new RiskRule
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{
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Id = r.id,
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RuleName = r.RuleName,
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RuleText = r.RuleText,
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ConditionJson = r.ConditionJson,
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RuleExpr = r.RuleExpr,
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Version = r.Version,
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IsDeleted = r.Status == RiskRuleStatus.Deleted,
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OptId = r.OptId ?? 0,
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OptName = r.OptName,
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OptDate = r.OptDate ?? DateTime.MinValue,
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UpdateOptId = r.UpdateOptId ?? 0,
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UpdateOptName = r.UpdateOptName,
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UpdateDate = r.UpdateDate ?? r.OptDate ?? DateTime.MinValue
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})
|
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.ToList();
|
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|
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foreach (var rule in rules)
|
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{
|
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var compileResult = RuleCompiler.ValidateAndCompileRule(rule);
|
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if (!compileResult.Success)
|
||
{
|
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_logger.Info($"[风控引擎] 规则预编译失败 - RuleId: {rule.Id}, Error: {compileResult.ErrorMessage}");
|
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}
|
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}
|
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return rules;
|
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}
|
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/// <summary>
|
||
/// 加载application
|
||
/// 当前从数据库读取应用配置用于验证流程
|
||
/// </summary>
|
||
private List<RiskRuleApplication> LoadApplications()
|
||
{
|
||
return DbContext.glms_risk_rule_application
|
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.AsNoTracking()
|
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.Where(a => a.Status != RiskRuleStatus.Deleted)
|
||
.OrderByDescending(a => a.UpdateDate ?? a.OptDate)
|
||
.Select(a => new RiskRuleApplication
|
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{
|
||
Id = a.id,
|
||
RuleIds = a.RuleIds,
|
||
Status = a.Status,
|
||
ControlStrategy = a.ControlStrategy,
|
||
TriggerPoints = a.TriggerPoints,
|
||
ScopeIsGlobal = a.ScopeIsGlobal,
|
||
ScopeAssetBookIds = a.ScopeAssetBookIds,
|
||
ScopeClientIds = a.ScopeClientIds,
|
||
ScopeUnderlyingTypes = a.ScopeUnderlyingTypes,
|
||
ScopeTradeTypes = a.ScopeTradeTypes,
|
||
Version = a.Version,
|
||
OptId = a.OptId ?? 0,
|
||
OptName = a.OptName,
|
||
OptDate = a.OptDate ?? DateTime.MinValue,
|
||
UpdateOptId = a.UpdateOptId ?? 0,
|
||
UpdateOptName = a.UpdateOptName,
|
||
UpdateDate = a.UpdateDate ?? a.OptDate ?? DateTime.MinValue
|
||
})
|
||
.ToList();
|
||
}
|
||
|
||
/// <summary>
|
||
/// 判断应用配置是否命中当前交易。
|
||
/// 匹配规则遵循设计文档：
|
||
/// 1. 全局命中时直接返回 true；
|
||
/// 2. 同一维度内多选按并集处理；
|
||
/// 3. 不同维度之间按交集处理；
|
||
/// 4. 某维度留空表示该维度不限制。
|
||
/// </summary>
|
||
private bool IsApplicationMatched(RiskRuleApplication application, YLErp.DBModels.trade trade)
|
||
{
|
||
if (application == null)
|
||
{
|
||
return false;
|
||
}
|
||
|
||
if (application.ScopeIsGlobal)
|
||
{
|
||
return true;
|
||
}
|
||
|
||
if (trade == null)
|
||
{
|
||
return false;
|
||
}
|
||
|
||
var accountMatched = IsScopeEmpty(application.ScopeAssetBookIds) || IsValueMatched(application.ScopeAssetBookIds, GetTradeAssetBookId(trade));
|
||
var clientMatched = IsScopeEmpty(application.ScopeClientIds) || IsValueMatched(application.ScopeClientIds, trade.ClientId);
|
||
var underlyingTypeMatched = IsScopeEmpty(application.ScopeUnderlyingTypes) || IsValueMatched(application.ScopeUnderlyingTypes, GetTradeUnderlyingType(trade));
|
||
var tradeTypeMatched = IsScopeEmpty(application.ScopeTradeTypes) || IsValueMatched(application.ScopeTradeTypes, trade.TradeType);
|
||
|
||
return accountMatched
|
||
&& clientMatched
|
||
&& underlyingTypeMatched
|
||
&& tradeTypeMatched;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 解析应用配置中的规则ID列表。
|
||
/// 多个规则ID使用逗号分隔，返回去空格后的 long 集合。
|
||
/// </summary>
|
||
private List<long> ParseRuleIds(string ruleIds)
|
||
{
|
||
if (string.IsNullOrWhiteSpace(ruleIds))
|
||
{
|
||
return new List<long>();
|
||
}
|
||
|
||
var ids = new List<long>();
|
||
foreach (var part in ruleIds.Split(',', StringSplitOptions.RemoveEmptyEntries))
|
||
{
|
||
if (long.TryParse(part.Trim(), out long id))
|
||
{
|
||
ids.Add(id);
|
||
}
|
||
}
|
||
|
||
return ids;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 判断某个范围字段是否为空。
|
||
/// 为空表示该维度不限制。
|
||
/// </summary>
|
||
private bool IsScopeEmpty(string scopeValue)
|
||
{
|
||
return string.IsNullOrWhiteSpace(scopeValue);
|
||
}
|
||
|
||
/// <summary>
|
||
/// 判断单个值是否命中逗号分隔的范围配置。
|
||
/// 同一维度内多选按并集处理，只要命中任一值即返回 true。
|
||
/// </summary>
|
||
private bool IsValueMatched(string scopeValue, object currentValue)
|
||
{
|
||
if (string.IsNullOrWhiteSpace(scopeValue))
|
||
{
|
||
return true;
|
||
}
|
||
|
||
if (currentValue == null)
|
||
{
|
||
return false;
|
||
}
|
||
|
||
var currentText = currentValue.ToString()?.Trim();
|
||
if (string.IsNullOrWhiteSpace(currentText))
|
||
{
|
||
return false;
|
||
}
|
||
|
||
return scopeValue
|
||
.Split(',', StringSplitOptions.RemoveEmptyEntries)
|
||
.Select(s => s.Trim())
|
||
.Any(s => string.Equals(s, currentText, StringComparison.OrdinalIgnoreCase));
|
||
}
|
||
|
||
/// <summary>
|
||
/// 读取交易的资产簿账户ID。
|
||
/// 当前先按 BookId 取值；如果后续真实字段不是 BookId，再统一调整这里即可。
|
||
/// </summary>
|
||
private object GetTradeAssetBookId(YLErp.DBModels.trade trade)
|
||
{
|
||
var property = trade.GetType().GetProperty("BookId");
|
||
return property?.GetValue(trade);
|
||
}
|
||
|
||
/// <summary>
|
||
/// 读取交易的标的类型。
|
||
/// 当前先按 UnderlyingInstrumentType 取值；如果后续真实字段名不同，再统一调整这里即可。
|
||
/// </summary>
|
||
private object GetTradeUnderlyingType(YLErp.DBModels.trade trade)
|
||
{
|
||
var property = trade.GetType().GetProperty("UnderlyingInstrumentType");
|
||
return property?.GetValue(trade);
|
||
}
|
||
}
|
||
}
|