package com.ard.tianyu.websocket.handler;
|
|
import com.alibaba.fastjson2.JSON;
|
import com.alibaba.fastjson2.TypeReference;
|
import com.ard.tianyu.service.control.UavControlService;
|
import com.ard.tianyu.websocket.domain.BaseMessage;
|
import com.ard.tianyu.websocket.domain.UavStreamMessage;
|
import com.ard.tianyu.websocket.domain.UavStateMessage;
|
import com.ard.tianyu.websocket.utils.WebSocketUtil;
|
import lombok.extern.slf4j.Slf4j;
|
import org.springframework.stereotype.Component;
|
import org.springframework.web.socket.CloseStatus;
|
import org.springframework.web.socket.TextMessage;
|
import org.springframework.web.socket.WebSocketSession;
|
import org.springframework.web.socket.handler.TextWebSocketHandler;
|
import javax.annotation.Resource;
|
|
|
@Component
|
@Slf4j
|
public class TyMessageHandler extends TextWebSocketHandler {
|
|
@Resource
|
private UavStreamManager uavStreamManager;
|
@Resource
|
private UavControlService uavControlService;
|
@Resource
|
private UavStateManager uavStateManager;
|
|
|
@Override
|
public void handleTextMessage(WebSocketSession session, TextMessage message) {
|
String userIdStr = (String) session.getAttributes().get("userId");
|
Long userId = Long.parseLong(userIdStr);
|
String payload = message.getPayload();
|
log.info("【cmd】Received message: {}", payload);
|
log.info("【cmd】size: {}", WebSocketUtil.ONLINE_USER_SESSIONS.size());
|
|
BaseMessage<?> baseMessage = JSON.parseObject(payload, BaseMessage.class);
|
switch (baseMessage.getType()) {
|
case "stream":
|
handleStreamMessage(payload, userId);
|
break;
|
case "state":
|
handleStateMessage(payload, userId);
|
break;
|
}
|
}
|
|
/**
|
* 处理流消息
|
* <p>
|
* 该方法解析给定的负载数据，以获取无人机流消息，并根据消息类型决定是否开始或停止流
|
*
|
* @param payload 消息的负载数据，通常为JSON字符串
|
* @param userId 接收消息的用户ID
|
*/
|
private void handleStreamMessage(String payload, Long userId) {
|
// 解析JSON负载数据为BaseMessage对象，包含UavStreamMessage类型的有效载荷
|
BaseMessage<UavStreamMessage> streamMessage = JSON.parseObject(payload,
|
new TypeReference<BaseMessage<UavStreamMessage>>() {
|
});
|
UavStreamMessage uavStreamMessage = streamMessage.getPayload();
|
|
// 检查解析后的UavStreamMessage对象是否非空
|
if (uavStreamMessage != null) {
|
String boxSn = uavStreamMessage.getBoxSn();
|
|
// 根据pullType决定操作类型：1表示开始流，其他值表示停止流
|
if (uavStreamMessage.getPullType().equals(1)) {
|
uavStreamManager.startPullStream(boxSn, userId);
|
} else {
|
uavStreamManager.stopPullStream(boxSn, userId);
|
}
|
}
|
}
|
|
/**
|
* 处理状态消息
|
* 根据接收到的消息内容，决定无人机状态信息的订阅或退订
|
*
|
* @param payload 消息负载，包含订阅信息
|
* @param userId 用户ID，用于标识用户
|
*/
|
private void handleStateMessage(String payload, Long userId) {
|
// 解析接收到的JSON消息，将其转换为BaseMessage对象
|
BaseMessage<UavStateMessage> stateMessage = JSON.parseObject(payload,
|
new TypeReference<BaseMessage<UavStateMessage>>() {
|
});
|
// 获取消息的有效载荷部分
|
UavStateMessage uavStateMessage = stateMessage.getPayload();
|
|
// 检查有效载荷是否存在
|
if (uavStateMessage != null) {
|
// 获取无人机盒子的序列号
|
String boxSn = uavStateMessage.getBoxSn();
|
// 根据消息中的订阅标志，决定是订阅还是退订无人机状态
|
Boolean subscribe = uavStateMessage.getSubscribe();
|
if (subscribe) {
|
// 执行订阅操作
|
uavStateManager.subscribeState(boxSn, userId);
|
} else {
|
// 执行退订操作
|
uavStateManager.unsubscribeState(boxSn, userId);
|
}
|
}
|
}
|
|
|
@Override
|
public void afterConnectionEstablished(WebSocketSession session) {
|
log.info("【cmd】Connected: {}", session.getId());
|
String userIdStr = (String) session.getAttributes().get("userId");
|
Long userId = Long.parseLong(userIdStr);
|
WebSocketUtil.ONLINE_USER_SESSIONS.put(userId, session);
|
log.info("【cmd】size: {}", WebSocketUtil.ONLINE_USER_SESSIONS.size());
|
}
|
|
@Override
|
public void afterConnectionClosed(WebSocketSession session, CloseStatus status) {
|
log.info("【cmd】Disconnected: {}", session.getId());
|
String userIdStr = (String) session.getAttributes().get("userId");
|
Long userId = Long.parseLong(userIdStr);
|
WebSocketUtil.ONLINE_USER_SESSIONS.remove(userId);
|
log.info("【cmd】size: {}", WebSocketUtil.ONLINE_USER_SESSIONS.size());
|
// 停止用户的所有流
|
uavStreamManager.stopAllPullStreamByUser(userId);
|
if (userId != null) {
|
// 释放该用户所有 UAV 控制权
|
uavControlService.releaseAllControls(userId);
|
}
|
|
uavStateManager.removeSubscribeState(userId);
|
}
|
}
|
