mirror of
https://github.com/lzh-1625/go_process_manager.git
synced 2025-10-03 15:16:29 +08:00
102 lines
3.0 KiB
Go
102 lines
3.0 KiB
Go
package api
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import (
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"context"
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"time"
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"github.com/lzh-1625/go_process_manager/internal/app/constants"
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"github.com/lzh-1625/go_process_manager/internal/app/logic"
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"github.com/lzh-1625/go_process_manager/internal/app/middle"
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"github.com/lzh-1625/go_process_manager/log"
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"github.com/lzh-1625/go_process_manager/utils"
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"github.com/gin-gonic/gin"
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"github.com/gorilla/websocket"
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)
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type wsApi struct{}
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var WsApi = new(wsApi)
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type WsConnetInstance struct {
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WsConnect *websocket.Conn
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CancelFunc context.CancelFunc
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}
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func (w *WsConnetInstance) Write(b []byte) {
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w.WsConnect.WriteMessage(websocket.BinaryMessage, b)
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}
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func (w *WsConnetInstance) WriteString(s string) {
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w.WsConnect.WriteMessage(websocket.TextMessage, []byte(s))
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}
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func (w *WsConnetInstance) Cancel() {
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w.CancelFunc()
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}
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var upgrader = websocket.Upgrader{
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ReadBufferSize: 1024,
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WriteBufferSize: 1024,
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}
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func (w *wsApi) WebsocketHandle(ctx *gin.Context) {
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reqUser := getUserName(ctx)
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uuid := getQueryInt(ctx, "uuid")
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proc, err := logic.ProcessCtlLogic.GetProcess(uuid)
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errCheck(ctx, err != nil, "Operation failed!")
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errCheck(ctx, proc.HasWsConn(reqUser), "A connection already exists; unable to establish a new one!")
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errCheck(ctx, proc.State.State != 1, "The process is currently running.")
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errCheck(ctx, proc.Control.Controller != reqUser && !proc.VerifyControl(), "Insufficient permissions; please check your access rights!")
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conn, err := upgrader.Upgrade(ctx.Writer, ctx.Request, nil)
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errCheck(ctx, err != nil, "WebSocket connection upgrade failed!")
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log.Logger.AddAdditionalInfo("processName", proc.Name)
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log.Logger.AddAdditionalInfo("userName", reqUser)
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defer log.Logger.DeleteAdditionalInfo(2)
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log.Logger.Infow("ws连接成功")
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proc.SetTerminalSize(utils.GetIntByString(ctx.Query("cols")), utils.GetIntByString(ctx.Query("rows")))
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wsCtx, cancel := context.WithCancel(context.Background())
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wci := &WsConnetInstance{
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WsConnect: conn,
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CancelFunc: cancel,
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}
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proc.ReadCache(wci)
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w.startWsConnect(conn, proc, hasOprPermission(ctx, uuid, constants.OPERATION_TERMINAL_WRITE))
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proc.AddConn(reqUser, wci)
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defer proc.DeleteConn(reqUser)
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conn.SetCloseHandler(func(_ int, _ string) error {
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middle.ProcessWaitCond.Trigger()
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cancel()
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return nil
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})
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middle.ProcessWaitCond.Trigger()
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select {
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case <-proc.StopChan:
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log.Logger.Infow("ws连接断开", "操作类型", "进程已停止，强制断开ws连接")
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case <-time.After(time.Minute * 10):
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log.Logger.Infow("ws连接断开", "操作类型", "连接时间超过最大时长限制")
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case <-wsCtx.Done():
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log.Logger.Infow("ws连接断开", "操作类型", "tcp连接建立已被关闭")
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}
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conn.Close()
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}
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func (w *wsApi) startWsConnect(conn *websocket.Conn, proc logic.Process, write bool) {
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log.Logger.Debugw("ws读取线程已启动")
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go func() {
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for {
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_, b, err := conn.ReadMessage()
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if err != nil {
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log.Logger.Debugw("ws读取线程已退出", "info", err)
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return
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}
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if write {
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proc.WriteBytes(b)
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continue
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}
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}
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}()
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}
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