332 lines
8.2 KiB
Go
332 lines
8.2 KiB
Go
package logic
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/json"
|
|
"fmt"
|
|
"fusenapi/constants"
|
|
"fusenapi/utils/auth"
|
|
"fusenapi/utils/id_generator"
|
|
"fusenapi/utils/websocket_data"
|
|
"github.com/google/uuid"
|
|
"github.com/gorilla/websocket"
|
|
"net/http"
|
|
"sync"
|
|
"time"
|
|
|
|
"context"
|
|
|
|
"fusenapi/server/websocket/internal/svc"
|
|
"github.com/zeromicro/go-zero/core/logx"
|
|
)
|
|
|
|
type DataTransferLogic struct {
|
|
logx.Logger
|
|
ctx context.Context
|
|
svcCtx *svc.ServiceContext
|
|
}
|
|
|
|
func NewDataTransferLogic(ctx context.Context, svcCtx *svc.ServiceContext) *DataTransferLogic {
|
|
return &DataTransferLogic{
|
|
Logger: logx.WithContext(ctx),
|
|
ctx: ctx,
|
|
svcCtx: svcCtx,
|
|
}
|
|
}
|
|
|
|
var (
|
|
//全局websocketid生成器
|
|
websocketIdGenerator = id_generator.NewWebsocketId(1)
|
|
//临时缓存对象池
|
|
buffPool = sync.Pool{
|
|
New: func() interface{} {
|
|
return bytes.Buffer{}
|
|
},
|
|
}
|
|
//升级websocket
|
|
upgrade = websocket.Upgrader{
|
|
//最大可读取大小 10M
|
|
ReadBufferSize: 1024 * 10,
|
|
//握手超时时间15s
|
|
HandshakeTimeout: time.Second * 15,
|
|
//允许跨域
|
|
CheckOrigin: func(r *http.Request) bool {
|
|
return true
|
|
},
|
|
//写的缓存池
|
|
WriteBufferPool: &buffPool,
|
|
//是否支持压缩
|
|
EnableCompression: true,
|
|
}
|
|
//websocket连接存储
|
|
mapConnPool = sync.Map{}
|
|
//公共互斥锁
|
|
publicMutex sync.Mutex
|
|
)
|
|
|
|
// 每个连接的连接基本属性
|
|
type wsConnectItem struct {
|
|
conn *websocket.Conn //websocket的连接
|
|
logic *DataTransferLogic //logic
|
|
closeChan chan struct{} //ws连接关闭chan
|
|
isClose bool //是否已经关闭
|
|
uniqueId string //ws连接唯一标识
|
|
inChan chan []byte //接受消息缓冲通道
|
|
outChan chan []byte //发送回客户端的消息
|
|
mutex sync.Mutex //互斥锁
|
|
userId int64 //用户id
|
|
guestId int64 //游客id
|
|
renderProperty renderProperty //扩展云渲染属性
|
|
}
|
|
|
|
func (l *DataTransferLogic) DataTransfer(w http.ResponseWriter, r *http.Request) {
|
|
r.Header.Set("Authorization", "Bearer "+r.Header.Get("Sec-Websocket-Protocol"))
|
|
//设置Sec-Websocket-Protocol
|
|
upgrade.Subprotocols = []string{r.Header.Get("Sec-Websocket-Protocol")}
|
|
//升级websocket
|
|
conn, err := upgrade.Upgrade(w, r, nil)
|
|
if err != nil {
|
|
logx.Error("http upgrade websocket err:", err)
|
|
return
|
|
}
|
|
defer conn.Close()
|
|
//鉴权不成功后断开
|
|
var (
|
|
userInfo *auth.UserInfo
|
|
isAuth bool
|
|
)
|
|
isAuth, userInfo = l.checkAuth(r)
|
|
if !isAuth {
|
|
time.Sleep(time.Second * 1) //兼容下火狐
|
|
rsp := websocket_data.DataTransferData{
|
|
T: constants.WEBSOCKET_UNAUTH,
|
|
D: nil,
|
|
}
|
|
b, _ := json.Marshal(rsp)
|
|
//先发一条正常信息
|
|
_ = conn.WriteMessage(websocket.TextMessage, b)
|
|
//发送关闭信息
|
|
_ = conn.WriteMessage(websocket.CloseMessage, nil)
|
|
return
|
|
}
|
|
// todo user信息是没有的
|
|
/*var userInfo auth.UserInfo
|
|
userInfo.UserId = 39*/
|
|
//设置连接
|
|
ws := l.setConnPool(conn, *userInfo)
|
|
defer ws.close()
|
|
//循环读客户端信息
|
|
go ws.readLoop()
|
|
//循环把数据发送给客户端
|
|
go ws.writeLoop()
|
|
//推消息到云渲染
|
|
go ws.sendLoop()
|
|
//操作连接中渲染任务的增加/删除
|
|
go ws.operationRenderTask()
|
|
//消费渲染缓冲队列
|
|
go ws.renderImage()
|
|
//心跳
|
|
ws.heartbeat()
|
|
}
|
|
|
|
// 设置连接
|
|
func (l *DataTransferLogic) setConnPool(conn *websocket.Conn, userInfo auth.UserInfo) wsConnectItem {
|
|
publicMutex.Lock()
|
|
defer publicMutex.Unlock()
|
|
//生成连接唯一标识
|
|
uniqueId := l.getUniqueId(userInfo)
|
|
ws := wsConnectItem{
|
|
conn: conn,
|
|
logic: l,
|
|
uniqueId: uniqueId,
|
|
closeChan: make(chan struct{}, 1),
|
|
inChan: make(chan []byte, 100),
|
|
outChan: make(chan []byte, 100),
|
|
userId: userInfo.UserId,
|
|
guestId: userInfo.GuestId,
|
|
renderProperty: renderProperty{
|
|
renderImageTask: make(map[string]string),
|
|
renderImageTaskCtlChan: make(chan renderImageControlChanItem, 100),
|
|
renderChan: make(chan []byte, 100),
|
|
},
|
|
}
|
|
//保存连接
|
|
mapConnPool.Store(uniqueId, ws)
|
|
go func() {
|
|
//把连接成功消息发回去
|
|
time.Sleep(time.Second * 1) //兼容下火狐
|
|
ws.sendToOutChan(ws.respondDataFormat(constants.WEBSOCKET_CONNECT_SUCCESS, uniqueId))
|
|
}()
|
|
return ws
|
|
}
|
|
|
|
// 获取唯一id
|
|
func (l *DataTransferLogic) getUniqueId(userInfo auth.UserInfo) string {
|
|
//后面拼接上用户id
|
|
uniqueId := uuid.New().String() + getUserPart(userInfo.UserId, userInfo.GuestId)
|
|
if _, ok := mapConnPool.Load(uniqueId); ok {
|
|
uniqueId = l.getUniqueId(userInfo)
|
|
}
|
|
return uniqueId
|
|
}
|
|
|
|
// 获取用户拼接部分
|
|
func getUserPart(userId, guestId int64) string {
|
|
return fmt.Sprintf("_%d_%d", userId, guestId)
|
|
}
|
|
|
|
// 鉴权
|
|
func (l *DataTransferLogic) checkAuth(r *http.Request) (isAuth bool, userInfo *auth.UserInfo) {
|
|
// 解析JWT token,并对空用户进行判断
|
|
claims, err := l.svcCtx.ParseJwtToken(r)
|
|
// 如果解析JWT token出错,则返回未授权的JSON响应并记录错误消息
|
|
if err != nil {
|
|
logx.Error(err)
|
|
return false, nil
|
|
}
|
|
if claims != nil {
|
|
// 从token中获取对应的用户信息
|
|
userInfo, err = auth.GetUserInfoFormMapClaims(claims)
|
|
// 如果获取用户信息出错,则返回未授权的JSON响应并记录错误消息
|
|
if err != nil {
|
|
logx.Error(err)
|
|
return false, nil
|
|
}
|
|
//不是登录用户也不是游客
|
|
if !userInfo.IsUser() && !userInfo.IsGuest() {
|
|
return false, nil
|
|
}
|
|
return true, userInfo
|
|
}
|
|
return false, nil
|
|
}
|
|
|
|
// 心跳
|
|
func (w *wsConnectItem) heartbeat() {
|
|
tick := time.Tick(time.Second * 5)
|
|
for {
|
|
select {
|
|
case <-w.closeChan:
|
|
return
|
|
case <-tick:
|
|
//发送心跳信息
|
|
if err := w.conn.WriteMessage(websocket.PongMessage, nil); err != nil {
|
|
logx.Error("发送心跳信息异常，关闭连接:", w.uniqueId, err)
|
|
w.close()
|
|
return
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// 关闭连接
|
|
func (w *wsConnectItem) close() {
|
|
w.mutex.Lock()
|
|
defer w.mutex.Unlock()
|
|
logx.Info("websocket:", w.uniqueId, " is closing...")
|
|
//发送关闭信息
|
|
_ = w.conn.WriteMessage(websocket.CloseMessage, nil)
|
|
w.conn.Close()
|
|
mapConnPool.Delete(w.uniqueId)
|
|
if !w.isClose {
|
|
w.isClose = true
|
|
close(w.closeChan)
|
|
}
|
|
logx.Info("websocket:", w.uniqueId, " is closed")
|
|
}
|
|
|
|
// 读取输出返回给客户端
|
|
func (w *wsConnectItem) writeLoop() {
|
|
for {
|
|
select {
|
|
case <-w.closeChan: //如果关闭了
|
|
return
|
|
case data := <-w.outChan:
|
|
if err := w.conn.WriteMessage(websocket.TextMessage, data); err != nil {
|
|
logx.Error("websocket write loop err:", err)
|
|
w.close()
|
|
return
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// 接受客户端发来的消息
|
|
func (w *wsConnectItem) readLoop() {
|
|
for {
|
|
select {
|
|
case <-w.closeChan: //如果关闭了
|
|
return
|
|
default:
|
|
msgType, data, err := w.conn.ReadMessage()
|
|
if err != nil {
|
|
logx.Error("接受信息错误:", err)
|
|
//关闭连接
|
|
w.close()
|
|
return
|
|
}
|
|
//ping的消息不处理
|
|
if msgType != websocket.PingMessage {
|
|
//消息传入缓冲通道
|
|
w.inChan <- data
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// 把收到的消息发往不同的地方处理
|
|
func (w *wsConnectItem) sendLoop() {
|
|
for {
|
|
select {
|
|
case <-w.closeChan:
|
|
return
|
|
case data := <-w.inChan:
|
|
w.dealwithReciveData(data)
|
|
}
|
|
}
|
|
}
|
|
|
|
// 把要传递给客户端的数据放入outchan
|
|
func (w *wsConnectItem) sendToOutChan(data []byte) {
|
|
select {
|
|
case <-w.closeChan:
|
|
return
|
|
case w.outChan <- data:
|
|
return
|
|
case <-time.After(time.Second * 3): //阻塞超过3秒丢弃
|
|
return
|
|
}
|
|
}
|
|
|
|
// 格式化返回数据
|
|
func (w *wsConnectItem) respondDataFormat(msgType string, data interface{}) []byte {
|
|
d := websocket_data.DataTransferData{
|
|
T: msgType,
|
|
D: data,
|
|
}
|
|
b, _ := json.Marshal(d)
|
|
return b
|
|
}
|
|
|
|
// 处理接受到的数据
|
|
func (w *wsConnectItem) dealwithReciveData(data []byte) {
|
|
var parseInfo websocket_data.DataTransferData
|
|
if err := json.Unmarshal(data, &parseInfo); err != nil {
|
|
logx.Error("invalid format of websocket message:", err)
|
|
w.sendToOutChan(w.respondDataFormat(constants.WEBSOCKET_ERR_DATA_FORMAT, "invalid format of websocket message:"+string(data)))
|
|
return
|
|
}
|
|
d, _ := json.Marshal(parseInfo.D)
|
|
//分消息类型给到不同逻辑处理，可扩展
|
|
switch parseInfo.T {
|
|
//图片渲染
|
|
case constants.WEBSOCKET_RENDER_IMAGE:
|
|
w.sendToRenderChan(d)
|
|
//刷新重连请求恢复上次连接的标识
|
|
case constants.WEBSOCKET_REQUEST_REUSE_LAST_CONNECT:
|
|
w.reuseLastConnect(d)
|
|
default:
|
|
|
|
}
|
|
}
|