eta_api/services/websocket_msg.go

package services

import (
	"eta/eta_api/global"
	"eta/eta_api/models"
	"eta/eta_api/services/data"
	"eta/eta_api/utils"
	"fmt"
	"sync"
	"time"

	"context"
)

func DealWebSocketMsg(adminId int) {
	go DealEdbInspectionMessage(adminId)
}

// 处理巡检消息
func DealEdbInspectionMessage(adminId int) {
	utils.FileLog.Info("创建协程, adminId:%d", adminId)
	// 创建上下文用于控制 goroutine 生命周期
	ctx, cancel := context.WithCancel(context.Background())
	defer cancel()

	cacheKey := fmt.Sprintf("%s%d", utils.CACHE_EDB_INSPECTION_MESSAGE, adminId)

	// 添加错误恢复机制
	defer func() {
		if r := recover(); r != nil {
			utils.FileLog.Error("WebSocket handler recovered from panic: %v", r)
			// 清理资源
			cancel()
		}
	}()
	
	for {
		select {
		case <-ctx.Done():
			utils.FileLog.Info("DealEdbInspectionMessage 巡检消息处理协程结束, adminId:%d", adminId)
			return
		default:
			// 检查连接状态
			conn := global.MonitorMessageConn[adminId]
			if conn == nil {
				utils.FileLog.Error("检查连接状态 发送消息时发现连接已断开, adminId:%d", adminId)
				cancel()
				return
			}
			// 使用带超时的 Redis 操作
			err := utils.Rc.BrpopWithTimeout(cacheKey, 30*time.Second, func(b []byte) {
				utils.FileLog.Info("收到巡检信息开始处理, adminId:%d", adminId)

				messageList, err := data.GetHistoryInspectionMessages(adminId)
				if err != nil {
					utils.FileLog.Error("获取巡检信息历史失败,err:%s, adminId:%d", err.Error(), adminId)
					return
				}
				if len(messageList) == 0 {
					utils.FileLog.Info("巡检信息历史为空, adminId:%d", adminId)
					return
				}

				readList := make([]int64, 0)
				// 检查连接状态
				conn := global.MonitorMessageConn[adminId]
				if conn == nil {
					utils.FileLog.Error("发送消息时发现连接已断开, adminId:%d", adminId)
					cancel()
					return
				}
				// 只处理第一条消息的发送，其他消息只标记为已读
				for i, msg := range messageList {
					if i == 0 {
						respData, err := data.SendInspectionMessages(adminId, msg)
						if err != nil {
							utils.FileLog.Error("巡检信息发送失败,err:%s, adminId:%d", err.Error(), adminId)
							continue
						}

						resp := models.WebsocketMessageResponse{
							MessageType: 1,
							Data:       respData,
						}

						err = WriteWebSocketMessageAsync(ctx, adminId, resp)
						if err != nil {
							utils.FileLog.Error("巡检信息发送失败,err:%s, adminId:%d", err.Error(), adminId)
							continue
						}

						utils.FileLog.Info("巡检信息发送成功,adminId:%d, messageId:%d", adminId, msg.MessageId)
					}
					readList = append(readList, msg.MessageId)
				}

				if len(readList) > 0 {
					_, err = data.ReadEdbInspectionMessageList(readList, adminId)
					if err != nil {
						utils.FileLog.Error("巡检信息已读失败,err:%s, adminId:%d", err.Error(), adminId)
					}
				}
			})

			if err != nil && err.Error() != "redis: nil" {
				utils.FileLog.Error("Redis operation failed: %v", err)
				continue
			}else {
				utils.FileLog.Info("巡检信息处理完成, adminId:%d", adminId)
			}
		}
	}
}

func WriteWebSocketMessageAsync(ctx context.Context, adminId int, resp interface{}) error {
	errChan := make(chan error, 1)
	var wsWriteMutex sync.Mutex
	
	go func() {
		wsWriteMutex.Lock()
		defer wsWriteMutex.Unlock()
		
		conn := global.MonitorMessageConn[adminId]
		if conn == nil {
			errChan <- fmt.Errorf("connection closed for adminId: %d", adminId)
			return
		}
		
		// 设置写超时
		//conn.SetWriteDeadline(time.Now().Add(10 * time.Second))
		errChan <- conn.WriteJSON(resp)
	}()
	
	select {
	case err := <-errChan:
		utils.FileLog.Error("WriteWebSocketMessageAsync errChan: %v", err)
		return err
	case <-ctx.Done():
		utils.FileLog.Error("WriteWebSocketMessageAsync ctx.Done(): %v", ctx.Err())
		return ctx.Err()
	}
}