Question

我创建了Windows服务。安装Installutil.exe成功，但当我按下开始按钮时出现进度条＆＃34;开始＆＃34;，然后它停止在50％。我必须取消。取消服务工作完美后，但禁用启动，停止和pasue命令。如果我想停止服务，我必须卸载服务。可能是什么原因？

主要方法：

tsc -p ./server <-- /server/tsconfig.json is loaded
tsc -p ./client <-- /client/tsconfig.json is loaded

这是我的服务类：

static void Main()
    {
        ServiceBase[] ServicesToRun;
        ServicesToRun = new ServiceBase[] 
            { 
                new TelegramBotService()
            };
        ServiceBase.Run(ServicesToRun);
    }

Answer 1

OnStart 方法必须在10秒内完成，否则服务控制管理器会认为它已挂起。目前它无限期地等待RunBot任务完成。

我已经描述了good way to deal with this approach。这是我的 OnStart 方法，它启动服务的控制器线程：

// SCM requests service start using its own thread.
// This method must complete within 10 seconds of it
// starting. Otherwise the SCM diagnoses a hang.
protected override void OnStart(string[] args)
{
    AppDomain currentDomain = AppDomain.CurrentDomain;
    currentDomain.UnhandledException += new UnhandledExceptionEventHandler(this.UnhandledExceptionFilter);

    this.ThreadController = new Thread(new ThreadStart(ControllerThreadRunning));
    this.ThreadController.Name = THREAD_NAME_CONTROLLER;
    this.ThreadController.Start();
    base.OnStart(args);
}

这是控制器线程：

// Invoked when the controller thread starts. 
private void ControllerThreadRunning()
{
    // And we're on our way.
    while ( !this.ServiceStopRequested )
    {
        // Start real work and then block until that finishes or crashes.
        var realWork = this.LaunchWorkAsync();
        realWork.Wait();
        // If SCM didn't request a service stop, the assumption is that 
        // the real work crashed and needs to be restarted.
        if ( !this.ServiceStopRequested )
        {
            this.PauseControllerThread("Pause before restarting work cycle.", this.RestartDelay);
        }
    }

    // This service will now stop.
    this.Cleanup();
}

这会异步启动服务的实际工作：

// This method handles all ceremony around the real work of this service.
private async Task LaunchWorkAsync()
{
    try 
    {
        // Setup progress reporting.
        var progressReport = new Progress<string>
                (progressInfo => { this.AppLog.Information(progressInfo, "ServiceMain.LaunchWorkAsync"); });
        var progress = progressReport as IProgress<string>;
        // Launch time.
        await Task.Factory.StartNew( () => this.DoWork(progress), TaskCreationOptions.LongRunning );
    }

    // Report any exception raised during the work cycle.
    catch (Exception ex)
    {
        this.AppLog.Error(string.Concat("Work cycle crashed", Environment.NewLine,
                                         ex.GetType().FullName, Environment.NewLine,
                                         ex.Message, Environment.NewLine,
                                         ex.StackTrace));
    }

    return;
}

这就是服务的真正工作所在：

// This is where this service's real work is done.
// The work cycles continuously until it's asked to stop.
// If the work crashes with an unhandled exception, the 
// controller thread will restart it after an appropriate delay.
private void DoWork(IProgress<string> progress)
{
    while (!this.ServiceStopRequested)
    {
        Thread.Sleep(5000);     // Simulated work cycle.
        progress.Report("Completed current cycle of work.");
    }
}

已安装Windows服务。但是启动，禁用停止按钮

1 个答案: