confrontation-training/api/gateway/sse.go

package gateway

import (
	"confrontation-training/constant"
	errors "confrontation-training/err"
	"confrontation-training/global"
	"confrontation-training/models/gateway"
	"encoding/json"
	"fmt"
	"github.com/gorilla/websocket"
	"github.com/r3labs/sse/v2"
	"net/http"
	"strings"
	"time"
)

// SseScanDevice 扫描设备
func SseScanDevice(paramMap map[string]string, filterType string, r *http.Request) {
	var scanUrl = global.Config.Gateway.BaseUrl + global.Config.Gateway.ScanUrl

	deviceMap := make(map[string]gateway.DeviceScanned)
	if len(paramMap) > 0 {
		for key, value := range paramMap {
			scanUrl += "&" + key + "=" + value
		}
	}

	//events := make(chan *sse.Event)
	client := sse.NewClient(scanUrl)
	go func() {
		fmt.Println("开始SSE")
		//err := client.SubscribeChan("messages", events)
		//if err != nil {
		//	return
		//}
		err := client.SubscribeRaw(func(msg *sse.Event) {
			//fmt.Println(string(msg.Data))
			var data gateway.DeviceScannedFromGateway
			err := json.Unmarshal(msg.Data, &data)
			if err != nil {
				fmt.Printf("SSE数据转换异常:%s", err.Error())
				return
			}
			deviceScanned := gateway.DeviceScanned{}
			deviceScanned.MAC = data.Bdaddrs[0].Bdaddr
			if filterType == "1" {
				deviceService := GetDeviceService()
				_, i := deviceService.FindDeviceByMac(deviceScanned.MAC)
				if i > 0 {
					deviceScanned.Name = data.Name
					deviceScanned.Rssi = data.Rssi
					deviceScanned.BdadrType = data.Bdaddrs[0].BdaddrType
					deviceScanned.Chip = data.ChipId
					deviceMap[deviceScanned.MAC] = deviceScanned
					fmt.Println(deviceScanned)
				}
			}
		})
		if err != nil {
			fmt.Println(err.Error())
			return
		}
		<-r.Context().Done()
		return
	}()
	ticket := time.NewTicker(time.Duration(global.Config.Gateway.ScanSecond) * time.Millisecond)
	for range ticket.C {
		fmt.Println("当前时间：" + time.Now().Format("2006-01-02 15:04:05"))
		ws, _, err := websocket.DefaultDialer.Dial(global.Config.Websocket.WSUrl, nil)
		if len(deviceMap) > 0 {

			if err != nil {
				fmt.Println("Websocket client init error" + err.Error())
				return
			}
			messageMap := make(map[string]string)
			messageMap["msgType"] = constant.MessageTypeDeviceScanned
			marshal, err := json.Marshal(deviceMap)
			if err != nil {
				fmt.Println("data parse Error :" + err.Error())
				return
			}
			messageMap["data"] = string(marshal)
			bytes, err := json.Marshal(messageMap)
			if err != nil {
				fmt.Printf("json异常：%s", err.Error())
				return
			}
			err = ws.WriteMessage(websocket.TextMessage, bytes)
			if err != nil {
				fmt.Println("消息发送异常：" + err.Error())
				return
			}
		} else {
			err := ws.WriteMessage(websocket.TextMessage, []byte("{}"))
			if err != nil {
				fmt.Println("消息发送异常：" + err.Error())
				return
			}
		}
		client = nil
		ws = nil
	}
}

// SseOpenNotify 开启通知
func SseOpenNotify() {
	var notifyUrl = global.Config.Gateway.BaseUrl + global.Config.Gateway.NotifyUrl

	ws, _, err := websocket.DefaultDialer.Dial(global.Config.Websocket.WSUrl, nil)
	if err != nil {
		fmt.Println("Websocket client init error" + err.Error())
		return
	}

	client := sse.NewClient(notifyUrl)
	err = client.SubscribeRaw(func(msg *sse.Event) {
		s := string(msg.Data)
		//fmt.Println("notify receive data :" + s)

		flag := strings.HasPrefix(s, "E840") || strings.HasPrefix(s, "E841") || strings.HasPrefix(s, "E823")
		if !flag {
			//websocket 通知数据
			//msgMap := make(map[string]string)
			//msgMap[]
			var receiveData gateway.DeviceDataReceived
			errJson := json.Unmarshal(msg.Data, &receiveData)
			if errJson != nil {
				fmt.Println("receive data parse error:" + errJson.Error())
				//panic(err)
				return
			}
			messageMap := make(map[string]string)
			messageMap["msgType"] = constant.MessageTypeData
			messageMap["data"] = string(msg.Data)
			err := ws.WriteMessage(websocket.TextMessage, msg.Data)
			if err != nil {
				fmt.Println(errors.SendMessageError + err.Error())
				return
			}
		}
	})
	if err != nil {
		return
	}
}