93 lines
2.6 KiB
Java
93 lines
2.6 KiB
Java
package com.dongni.collisionavoidance.webSocket.message;
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import com.fasterxml.jackson.annotation.JsonProperty;
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import lombok.Data;
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import lombok.NoArgsConstructor;
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import lombok.AllArgsConstructor;
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import lombok.Builder;
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/**
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* WebSocket统一消息封装类
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* 与前端JSON格式完全兼容
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*
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* @param <T> 消息载荷类型
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*/
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@Data
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@Builder
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@NoArgsConstructor
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@AllArgsConstructor
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public class WebSocketMessage<T> {
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/**
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* 消息类型 (position_update, vehicle_command等)
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*/
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@JsonProperty("type")
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private String type;
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/**
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* 微秒级时间戳
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*/
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@JsonProperty("timestamp")
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private Long timestamp;
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/**
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* 消息唯一ID (可选)
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*/
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@JsonProperty("messageId")
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private String messageId;
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/**
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* 消息载荷 (JSON格式的具体数据)
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* 根据消息类型，payload可能包含:
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* - 位置更新: object_id, object_type, position, heading, speed
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* - 车辆指令: vehicleId, vehicleType, commandType, reason等
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* - 红绿灯状态: intersection_id, position, ns_status, ew_status
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* - 碰撞预警: object1_id, object2_id, risk_level, distance等
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*/
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@JsonProperty("payload")
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private T payload;
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/**
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* 为位置更新消息创建便捷方法
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*/
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public static <T> WebSocketMessage<T> positionUpdate(T payload) {
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return WebSocketMessage.<T>builder()
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.type("position_update")
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.timestamp(System.nanoTime() / 1000) // 转换为微秒
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.payload(payload)
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.build();
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}
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/**
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* 为车辆指令消息创建便捷方法
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*/
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public static <T> WebSocketMessage<T> vehicleCommand(T payload) {
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return WebSocketMessage.<T>builder()
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.type("vehicle_command")
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.timestamp(System.nanoTime() / 1000)
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.payload(payload)
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.build();
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}
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/**
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* 为红绿灯状态消息创建便捷方法
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*/
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public static <T> WebSocketMessage<T> trafficLightStatus(T payload) {
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return WebSocketMessage.<T>builder()
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.type("intersection_traffic_light_status")
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.timestamp(System.nanoTime() / 1000)
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.payload(payload)
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.build();
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}
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/**
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* 为碰撞预警消息创建便捷方法
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*/
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public static <T> WebSocketMessage<T> collisionWarning(T payload) {
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return WebSocketMessage.<T>builder()
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.type("collision_warning")
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.timestamp(System.nanoTime() / 1000)
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.payload(payload)
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.build();
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}
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} |