161 lines
4.4 KiB
C++
161 lines
4.4 KiB
C++
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#ifndef ETMS_EVENT_MANAGER_HPP
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#define ETMS_EVENT_MANAGER_HPP
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#include <string>
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#include <vector>
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#include <chrono>
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#include <cstdint>
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/**
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* @brief 事件状态枚举
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*
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* 对应 t_event 表 status 字段的状态流转路径：
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* Received → Processed → PendingTask → TaskGenerated
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*/
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enum class EventStatus {
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Received, ///< 已接收，尚未处理
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Processed, ///< 已处理完毕
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PendingTask, ///< 待生成任务
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TaskGenerated ///< 任务已生成
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};
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/**
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* @brief 事件等级枚举
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*
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* 区分战场事件的紧急程度与重要性。
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*/
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enum class EventLevel {
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Info = 0, ///< 信息级
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Warning = 1, ///< 警告级
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Critical = 2, ///< 危急级
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Fatal = 3 ///< 致命级
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};
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/**
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* @brief 战场事件数据结构
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*
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* 对应分析文档中 t_event 表的核心字段。
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*/
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struct Event {
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uint64_t id; ///< 自增主键 ID
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std::string eventId; ///< 事件唯一标识 (event_id)
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std::string eventType; ///< 事件类型 (event_type)
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int64_t timestamp; ///< 事件发生时间戳 (毫秒)
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EventLevel level; ///< 事件等级
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double longitude; ///< 经度
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double latitude; ///< 纬度
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std::string description; ///< 事件描述
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EventStatus status; ///< 当前处理状态
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int64_t createTime; ///< 记录创建时间戳 (毫秒)
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};
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/**
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* @brief 分页查询结果
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*/
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struct PageResult {
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std::vector<Event> items; ///< 当前页数据
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size_t totalCount; ///< 总记录数
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size_t pageIndex; ///< 当前页码 (从1开始)
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size_t pageSize; ///< 每页大小
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};
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/**
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* @brief 事件管理器
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*
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* 负责战场事件数据的接收、处理、存储与查询。
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* 支持事件状态流转、分页查询、按等级过滤和自定义排序。
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*/
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class EventManager {
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public:
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/// @brief 默认构造函数
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EventManager();
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/// @brief 虚析构函数
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virtual ~EventManager();
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/// @brief 禁止拷贝
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EventManager(const EventManager&) = delete;
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EventManager& operator=(const EventManager&) = delete;
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/// @brief 允许移动
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EventManager(EventManager&&) noexcept;
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EventManager& operator=(EventManager&&) noexcept;
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/**
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* @brief 接收并解析一条原始事件
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*
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* 模拟从消息队列（MQTT/Kafka）接收 JSON 事件后的处理入口。
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*
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* @param rawJson 原始 JSON 字符串（简化处理）
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* @return true 解析成功，事件已入库
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* @return false 格式无效或字段缺失
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*/
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bool receiveEvent(const std::string& rawJson);
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/**
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* @brief 更新指定事件的状态
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*
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* @param eventId 事件唯一 ID
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* @param newStatus 目标状态
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* @return true 更新成功
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* @return false 未找到该事件
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*/
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bool updateStatus(const std::string& eventId, EventStatus newStatus);
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/**
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* @brief 分页查询事件列表
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*
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* @param page 页码（从1开始）
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* @param pageSize 每页条数
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* @param levelFilter 按等级过滤，传入 nullptr 表示不过滤
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* @return PageResult 分页结果
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*/
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PageResult queryEvents(size_t page, size_t pageSize,
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const EventLevel* levelFilter = nullptr) const;
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/**
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* @brief 获取当前事件总数
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* @return size_t
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*/
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size_t totalEvents() const;
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/**
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* @brief 根据事件 ID 查找事件
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* @param eventId 事件唯一 ID
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* @return const Event* 找到返回指针，否则返回 nullptr
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*/
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const Event* findEvent(const std::string& eventId) const;
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/**
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* @brief 获取事件等级的字符串表示
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* @param level 事件等级
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* @return const char* 中文描述
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*/
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static const char* levelToString(EventLevel level) noexcept;
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/**
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* @brief 获取事件状态的字符串表示
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* @param status 事件状态
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* @return const char*
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*/
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static const char* statusToString(EventStatus status) noexcept;
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private:
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std::vector<Event> m_events; ///< 事件存储容器（模拟数据库 t_event 表）
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uint64_t m_nextId = 1; ///< 自增 ID 计数器
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/**
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* @brief 生成下一个主键 ID
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* @return uint64_t
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*/
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uint64_t nextId();
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/**
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* @brief 获取当前毫秒时间戳
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* @return int64_t
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*/
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static int64_t nowMs() noexcept;
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};
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#endif // ETMS_EVENT_MANAGER_HPP
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