Topshelf根据自定义参数启动线程

Question

我已经做了一个使用自定义参数的topshelf服务：

string department = null;

// *********************Below is a TopShelf
HostFactory.Run(hostConfigurator =>
{
    //Define new parameter
    hostConfigurator.ApplyCommandLine();                                                
    //apply it  
    hostConfigurator.AddCommandLineDefinition("department", f => { department = f; });

    Helpers.LogFile("xxx", "Got department:"+department);  

    hostConfigurator.Service<MyService>(serviceConfigurator =>
    {
        //what service we are using
        serviceConfigurator.ConstructUsing(() => new MyService(department));
        //what to run on start
        serviceConfigurator.WhenStarted(myService => myService.Start());
        // and on stop             
        serviceConfigurator.WhenStopped(myService => myService.Stop());                 
    }

    hostConfigurator.RunAsLocalService();

    //****************Change those names for other
    string d = "CallForwardService_" + department;

    hostConfigurator.SetDisplayName(d);
    hostConfigurator.SetDescription("CallForward using Topshelf");
    hostConfigurator.SetServiceName(d);                
});



public class MyService
{
    string depTask;
    public MyService(string d)
    {
        //***********************Three tasks for three different destinations
        depTask = d;
        _taskL = new Task(Logistics);
        _taskP = new Task(Planners);
        _taskW = new Task(Workshop);
        Helpers.LogFile(depTask, "started working on threads for "+d);   

        public void Start()
        {
            if (depTask == "logistics")
            {
                _taskL.Start();
                Helpers.LogFile(depTask, "proper thread selected");      
            }
        }
    }
}

其中Helpers.logfile只是简单地写入文本文件。Aa您可以从上面的代码中看到，参数department被传递给MyService(string d)。当我使用"-department:workshop“作为调试参数进行调试时，一切都运行得很好。但是，当我尝试使用callforward.exe install -department:logistics将程序作为服务安装时，我确实创建了服务callforwardservice_logistics，但是当我检查日志时，该参数尚未传递给MyService。

我做错了什么？

Answer 1

似乎在默认情况下，Topshelf不支持向服务启动配置添加自定义参数，并且在安装后，HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MyService下的ImagePath值不包含额外的参数-department:...。您可以继承默认的WindowsHostEnvironment并重载Install方法，但我认为将以下代码添加到您的主机配置代码中会更容易(可能不太好)：

// *********************Below is a TopShelf code*****************************//
HostFactory.Run(hostConfigurator =>
{
    ...
    hc.AfterInstall(ihc =>
    {
        using (RegistryKey system = Registry.LocalMachine.OpenSubKey("System"))
        using (RegistryKey currentControlSet = system.OpenSubKey("CurrentControlSet"))
        using (RegistryKey services = currentControlSet.OpenSubKey("Services"))
        using (RegistryKey service = services.OpenSubKey(ihc.ServiceName, true))
        {
            const String v = "ImagePath";
            var imagePath = (String)service.GetValue(v);
            service.SetValue(v, imagePath + String.Format(" -department \"{0}\"", department));
        }
    });
    ...
}

Answer 2

我最终解决了这个问题:仅设置参数是不够的，您还必须创建一个命名实例。

所以在我的情况下

callforward.exe install -department"logistics"

我用过

callforward.exe install -department"logistics" -instance:logistics

然后按实例名称启动实例：

net start CallForwardService_$logistics

这让我可以创建同一服务的多个实例，这些实例具有由参数控制的不同名称：

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