260 lines
7.5 KiB
Markdown
260 lines
7.5 KiB
Markdown
## 子系统关系图示例
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### 1. 系统上下文图（System Context Diagram）
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```mermaid
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graph TD
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subgraph 外部实体
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User[用户]
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CustomerSystem[客户系统]
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SupplierSystem[供应商系统]
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PaymentGateway[支付网关]
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end
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subgraph 核心系统
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MainSystem[主系统]
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subgraph 子系统A[子系统A - 订单管理]
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OrderService[订单服务]
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InventoryService[库存服务]
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PricingService[定价服务]
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end
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subgraph 子系统B[子系统B - 用户管理]
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AuthService[认证服务]
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ProfileService[用户档案服务]
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PermissionService[权限服务]
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end
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subgraph 子系统C[子系统C - 数据分析]
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ReportService[报表服务]
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AnalyticsService[分析服务]
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DashboardService[仪表盘服务]
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end
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subgraph 子系统D[子系统D - 通知中心]
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EmailService[邮件服务]
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SMSGateway[短信网关]
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PushService[推送服务]
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end
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end
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subgraph 数据存储
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DB[(数据库)]
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Cache[(缓存)]
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LogStorage[(日志存储)]
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end
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%% 外部实体连接
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User --> MainSystem
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CustomerSystem <--> MainSystem
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SupplierSystem <--> MainSystem
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PaymentGateway <--> MainSystem
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%% 主系统与子系统连接
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MainSystem --> OrderService
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MainSystem --> AuthService
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MainSystem --> ReportService
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MainSystem --> EmailService
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%% 子系统内部连接
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OrderService --> InventoryService
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OrderService --> PricingService
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AuthService --> ProfileService
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AuthService --> PermissionService
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ReportService --> AnalyticsService
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ReportService --> DashboardService
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EmailService --> SMSGateway
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EmailService --> PushService
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%% 子系统与数据存储连接
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OrderService --> DB
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InventoryService --> DB
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ProfileService --> DB
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PermissionService --> DB
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AnalyticsService --> DB
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PricingService --> Cache
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AuthService --> Cache
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EmailService --> LogStorage
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SMSGateway --> LogStorage
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PushService --> LogStorage
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```
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### 2. 子系统交互流程图
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```mermaid
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sequenceDiagram
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participant Client as 客户端
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participant Main as 主系统
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participant Order as 订单子系统
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participant User as 用户子系统
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participant Payment as 支付子系统
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participant Notify as 通知子系统
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participant DB as 数据库
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Client->>Main: 请求创建订单
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Main->>User: 验证用户身份和权限
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User->>DB: 查询用户信息
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DB-->>User: 返回用户数据
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User-->>Main: 验证通过
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Main->>Order: 创建订单请求
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Order->>DB: 查询库存
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DB-->>Order: 返回库存状态
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alt 库存充足
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Order->>DB: 锁定库存
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Order->>Payment: 发起支付请求
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Payment->>DB: 创建支付记录
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DB-->>Payment: 支付记录创建成功
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Payment-->>Order: 支付已发起
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Order->>DB: 更新订单状态为"等待支付"
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Order-->>Main: 订单创建成功
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Main->>Notify: 发送订单确认通知
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Notify-->>Client: 推送订单确认消息
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else 库存不足
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Order-->>Main: 库存不足
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Main-->>Client: 返回错误信息
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end
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```
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### 3. 子系统依赖关系图
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```mermaid
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graph LR
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subgraph 基础服务层
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ConfigSvc[配置服务]
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LogSvc[日志服务]
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SecuritySvc[安全服务]
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CommonLib[公共库]
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end
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subgraph 核心业务层
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UserMgmt[用户管理子系统]
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ProductMgmt[产品管理子系统]
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OrderMgmt[订单管理子系统]
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PaymentMgmt[支付管理子系统]
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end
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subgraph 应用服务层
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API_Gateway[API网关]
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MobileApp[移动应用服务]
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WebPortal[Web门户服务]
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ReportSvc[报表服务]
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end
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subgraph 集成层
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ExternalAPI[外部API集成]
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MessageQueue[消息队列]
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EventBus[事件总线]
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end
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%% 依赖关系
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UserMgmt --> ConfigSvc
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UserMgmt --> LogSvc
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UserMgmt --> SecuritySvc
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UserMgmt --> CommonLib
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ProductMgmt --> ConfigSvc
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ProductMgmt --> LogSvc
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ProductMgmt --> CommonLib
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OrderMgmt --> UserMgmt
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OrderMgmt --> ProductMgmt
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OrderMgmt --> LogSvc
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OrderMgmt --> ConfigSvc
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OrderMgmt --> CommonLib
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PaymentMgmt --> OrderMgmt
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PaymentMgmt --> LogSvc
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PaymentMgmt --> SecuritySvc
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PaymentMgmt --> ConfigSvc
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API_Gateway --> UserMgmt
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API_Gateway --> ProductMgmt
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API_Gateway --> OrderMgmt
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API_Gateway --> PaymentMgmt
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API_Gateway --> SecuritySvc
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MobileApp --> API_Gateway
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WebPortal --> API_Gateway
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ReportSvc --> UserMgmt
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ReportSvc --> OrderMgmt
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ReportSvc --> ProductMgmt
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UserMgmt --> ExternalAPI
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PaymentMgmt --> ExternalAPI
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OrderMgmt --> MessageQueue
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PaymentMgmt --> MessageQueue
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UserMgmt --> EventBus
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OrderMgmt --> EventBus
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ProductMgmt --> EventBus
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PaymentMgmt --> EventBus
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```
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### 4. C4模型系统上下文图
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```mermaid
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graph TD
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subgraph 系统边界
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System[企业资源规划系统]
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subgraph 功能模块
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HR[人力资源管理]
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Finance[财务管理]
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Inventory[库存管理]
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Sales[销售管理]
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Production[生产管理]
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end
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System --> HR
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System --> Finance
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System --> Inventory
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System --> Sales
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System --> Production
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end
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%% 系统间关系
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HR <--> Finance: 薪资数据
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Sales <--> Finance: 订单数据
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Sales <--> Inventory: 库存查询
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Production <--> Inventory: 物料需求
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Production <--> Finance: 成本核算
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%% 外部系统
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ExtCRM[外部CRM系统] <--> Sales: 客户数据
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ExtSupplier[供应商系统] <--> Inventory: 采购数据
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ExtBank[银行系统] <--> Finance: 支付结算
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%% 用户
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HR_User[HR人员] --> HR
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Finance_User[财务人员] --> Finance
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Inventory_User[仓库人员] --> Inventory
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Sales_User[销售人员] --> Sales
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Prod_User[生产人员] --> Production
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```
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### 说明
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以上子系统关系图展示了不同类型的系统间关系表示方法：
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1. **系统上下文图**：展示了系统的整体架构，包括核心子系统、外部实体和数据存储之间的关系。适合高层次架构设计。
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2. **子系统交互流程图**：使用时序图展示子系统之间的交互过程和消息传递顺序，适合描述业务流程中的系统协作。
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3. **子系统依赖关系图**：展示了子系统之间的依赖关系，包括基础服务、核心业务、应用服务和集成层的层次结构。
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4. **C4模型系统上下文图**：遵循C4模型方法论，展示了企业级系统中的子系统边界和它们之间的关系。
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### Mermaid图表类型选择建议
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对于展示子系统之间的关系，推荐使用以下Mermaid图表类型：
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- **graph TD/LR**：适用于系统上下文图、依赖关系图等静态关系展示
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- **sequenceDiagram**：适用于展示子系统间的交互流程和消息传递
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- **flowchart**：适用于展示更复杂的业务流程和子系统协作
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- **classDiagram**：如果需要展示子系统的类结构和它们之间的关系
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选择图表类型时，应根据具体需求考虑：是需要展示静态结构关系，还是动态交互过程；是需要高层次概览，还是详细的交互细节。 |