280 lines
9.2 KiB
Markdown
280 lines
9.2 KiB
Markdown
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# 多平台机巢状态机架构说明
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## 架构概述
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本系统采用**策略模式 + 工厂模式**实现多平台支持，允许DJI、AUTEL、YUNEEC等不同无人机平台共存并独立运行。
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## 核心设计
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### 1. 平台类型枚举 (PlatformType)
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```
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- DJI (大疆)
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- AUTEL (道通)
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- YUNEEC (昊翔)
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```
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### 2. 平台策略接口
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#### AirportPlatformStrategy
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定义机巢平台需要实现的所有Guard、Action和Listener：
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- Guards: CanOnlineGuard, CanOfflineGuard, IsDebugModeGuard等
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- Actions: OnlineAction, OfflineAction, OpenDebugModeAction等
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- Listener: 状态变化监听器
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#### CoverPlatformStrategy
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定义舱门平台需要实现的所有Guard、Action和Listener：
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- Guards: CanOpenGuard, CanCloseGuard, IsOpenedGuard等
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- Actions: OpenAction, CloseAction, OpenedAction等
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- Listener: 状态变化监听器
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### 3. 平台策略工厂 (PlatformStrategyFactory)
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**核心功能：**
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- 根据机巢SN从数据库查询平台类型
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- 返回对应平台的策略实现
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- 自动注册所有平台策略实现
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**关键方法：**
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```java
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AirportPlatformStrategy getAirportStrategy(String airportSn)
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CoverPlatformStrategy getCoverStrategy(String airportSn)
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PlatformType getPlatformType(String airportSn)
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```
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### 4. 数据库映射 (AirportPlatformRepository)
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**存储结构：**
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```
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机巢SN -> 平台类型
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airport-001 -> DJI
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airport-002 -> AUTEL
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airport-003 -> DJI
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airport-004 -> YUNEEC
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```
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**说明：** 当前使用内存Map模拟数据库，实际使用时替换为真实数据库查询。
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### 5. 默认Listener实现
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#### DefaultAirportListener
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提供机巢状态变化的基础监听功能：
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- 状态进入/退出日志
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- 状态转换日志
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- 事件未接受日志
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- 状态机启动/停止日志
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#### DefaultCoverListener
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提供舱门状态变化的基础监听功能（同上）
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**特点：** 各平台可以继承默认Listener并定制自己的逻辑。
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## 目录结构
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```
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com.tuoheng.status.airport
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├── platform
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│ ├── PlatformType.java # 平台类型枚举
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│ ├── strategy # 策略接口
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│ │ ├── PlatformAction.java
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│ │ ├── PlatformGuard.java
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│ │ ├── PlatformListener.java
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│ │ ├── AirportPlatformStrategy.java
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│ │ └── CoverPlatformStrategy.java
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│ ├── factory
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│ │ └── PlatformStrategyFactory.java # 平台策略工厂
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│ ├── repository
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│ │ └── AirportPlatformRepository.java # 数据库映射
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│ └── impl # 平台实现
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│ └── dji # DJI平台实现
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│ ├── DjiAirportPlatformStrategy.java
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│ ├── DjiCoverPlatformStrategy.java
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│ ├── action
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│ │ ├── airport # 机巢Action
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│ │ │ ├── DjiOnlineAction.java
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│ │ │ ├── DjiOfflineAction.java
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│ │ │ ├── DjiOpenDebugModeAction.java
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│ │ │ ├── DjiCloseDebugModeAction.java
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│ │ │ ├── DjiRebootAction.java
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│ │ │ └── DjiRebootCompletedAction.java
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│ │ └── cover # 舱门Action
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│ │ ├── DjiOpenCoverAction.java
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│ │ ├── DjiCoverOpenedAction.java
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│ │ ├── DjiCloseCoverAction.java
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│ │ ├── DjiCoverClosedAction.java
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│ │ ├── DjiCoverErrorAction.java
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│ │ └── DjiCoverResetAction.java
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│ └── guard
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│ ├── airport # 机巢Guard
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│ │ ├── DjiCanOnlineGuard.java
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│ │ ├── DjiCanOfflineGuard.java
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│ │ ├── DjiIsDebugModeGuard.java
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│ │ ├── DjiIsNotDebugModeGuard.java
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│ │ ├── DjiCanCloseDebugModeGuard.java
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│ │ └── DjiIsRebootCompletedGuard.java
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│ └── cover # 舱门Guard
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│ ├── DjiCanOpenCoverGuard.java
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│ ├── DjiCanCloseCoverGuard.java
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│ ├── DjiIsCoverOpenedGuard.java
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│ └── DjiIsCoverClosedGuard.java
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├── listener
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│ ├── DefaultAirportListener.java # 默认机巢监听器
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│ └── DefaultCoverListener.java # 默认舱门监听器
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├── config
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│ ├── AirportMachineConfig.java # 机巢状态机配置（多平台）
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│ └── CoverMachineConfig.java # 舱门状态机配置（多平台）
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├── service
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│ ├── AirportMachineService.java # 机巢状态机服务
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│ └── CoverMachineService.java # 舱门状态机服务
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├── manager
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│ └── AirportSystemManager.java # 系统管理器（协调器）
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└── demo
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├── AirportSystemDemo.java # 单平台演示
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└── MultiPlatformDemo.java # 多平台演示
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```
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## 工作流程
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### 1. 状态机创建流程
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```
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用户调用 -> AirportSystemManager.airportOnline(airportSn)
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↓
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AirportMachineService.sendEvent(airportSn, AIRPORT_ONLINE)
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↓
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AirportMachineService.getOrCreateStateMachine(airportSn)
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↓
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AirportMachineConfig.stateMachineFactory.getStateMachine(airportSn)
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↓
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PlatformStrategyFactory.getAirportStrategy(airportSn)
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↓
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AirportPlatformRepository.getPlatformType(airportSn) # 查询数据库
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↓
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返回对应平台的Strategy (如: DjiAirportPlatformStrategy)
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↓
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使用Strategy中的Guard、Action、Listener构建状态机
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↓
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状态机创建完成并启动
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```
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### 2. 事件处理流程
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```
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事件触发 -> StateMachine.sendEvent(event)
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↓
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检查Guard条件 (如: DjiCanOnlineGuard.evaluate())
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↓
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Guard通过 -> 执行Action (如: DjiOnlineAction.execute())
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↓
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状态转换
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↓
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触发Listener回调 (如: DefaultAirportListener.stateChanged())
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```
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## 如何添加新平台
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### 步骤1: 在PlatformType中添加新平台
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```java
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public enum PlatformType {
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DJI("DJI", "大疆"),
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AUTEL("AUTEL", "道通"),
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YUNEEC("YUNEEC", "昊翔"),
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NEW_PLATFORM("NEW", "新平台"); // 添加这行
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}
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```
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### 步骤2: 创建平台实现目录
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```
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platform/impl/newplatform/
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├── NewPlatformAirportStrategy.java
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├── NewPlatformCoverStrategy.java
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├── action/
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│ ├── airport/
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│ └── cover/
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└── guard/
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├── airport/
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└── cover/
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```
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### 步骤3: 实现AirportPlatformStrategy接口
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```java
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@Component
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public class NewPlatformAirportStrategy implements AirportPlatformStrategy {
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@Override
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public PlatformType getPlatformType() {
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return PlatformType.NEW_PLATFORM;
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}
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// 实现所有Guard、Action、Listener的getter方法
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}
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```
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### 步骤4: 实现CoverPlatformStrategy接口
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```java
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@Component
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public class NewPlatformCoverStrategy implements CoverPlatformStrategy {
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@Override
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public PlatformType getPlatformType() {
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return PlatformType.NEW_PLATFORM;
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}
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// 实现所有Guard、Action、Listener的getter方法
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}
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```
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### 步骤5: 实现所有Guard和Action
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参考DJI平台的实现，创建对应的Guard和Action类。
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### 步骤6: 在数据库中配置映射关系
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```java
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repository.savePlatformMapping("airport-005", PlatformType.NEW_PLATFORM);
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```
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### 步骤7: 测试
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```java
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systemManager.airportOnline("airport-005");
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```
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## 运行演示
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### 单平台演示
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```bash
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运行: AirportSystemDemo.main()
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演示内容: DJI平台的完整开舱、关舱、重启流程
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```
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### 多平台演示
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```bash
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运行: MultiPlatformDemo.main()
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演示内容:
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- DJI、AUTEL、YUNEEC三个平台同时运行
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- 各平台独立的状态管理
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- 动态注册新平台
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- 多平台状态汇总
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```
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## 架构优势
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1. **平台隔离**: 各平台的业务逻辑完全独立，互不影响
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2. **易于扩展**: 添加新平台只需实现Strategy接口，无需修改现有代码
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3. **数据库驱动**: 平台映射关系存储在数据库，支持动态配置
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4. **多平台并发**: 支持多个平台同时运行，状态机独立管理
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5. **默认实现**: 提供默认Listener，减少重复代码
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6. **类型安全**: 使用枚举和接口保证类型安全
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7. **Spring集成**: 利用Spring的依赖注入自动注册所有平台策略
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## 注意事项
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1. **数据库配置**: 当前使用内存Map模拟，生产环境需替换为真实数据库
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2. **平台注册**: 所有平台Strategy实现必须标注@Component注解
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3. **机巢SN**: 必须在数据库中配置机巢SN到平台类型的映射
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4. **Listener定制**: 如需定制Listener，继承DefaultListener并覆盖相应方法
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5. **线程安全**: Service层使用ConcurrentHashMap保证线程安全
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## 未来扩展
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1. **平台能力差异**: 可在Strategy中添加能力查询接口
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2. **动态配置**: 支持运行时动态修改平台映射关系
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3. **平台版本**: 支持同一平台的不同版本（如DJI v1, DJI v2）
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4. **监控告警**: 集成监控系统，实时监控各平台状态
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5. **性能优化**: 状态机缓存、懒加载等优化策略
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