如何在TopShelf中为服务指定命令行选项

Question

我使用命令行参数将一些配置传递给Windows服务(它将是几个具有不同命令行的实例).

我的代码看起来像这样:

HostFactory.Run(x =>                                 
{
    x.Service<MyHost>(s =>
    {                    
        s.ConstructUsing(name => new MyHost());
        s.WhenStarted(tc => tc.Start());             
        s.WhenStopped(tc => tc.Stop());              
    });
    x.AddCommandLineDefinition("sqlserver", v => sqlInstance = v);
}); 

当我安装服务时,我使用:

myhost.exe install -sqlserver:someinstance

遗憾的是,sqlserver命令行选项仅在安装阶段可用,并且不会转到服务的参数.所以当我运行服务时,我没有得到我需要的参数值.

有没有办法修改TopShelf启动的服务命令行？

Answer 1

我有类似的要求，不幸的是，无法将命令行参数存储在文件中。

免责声明：此方法仅适用于 Windows

首先，我添加了安装后操作

x.AfterInstall(
    installSettings =>
    {
         AddCommandLineParametersToStartupOptions(installSettings);
    });

我AddCommanLineParameterToStartupOptions更新了该服务的ImagePath Windows 注册表条目以包含命令行参数。

TopShelf 在此步骤之后添加其参数，以避免重复，servicename并且instance我将其过滤掉。您可能想要过滤掉的不仅仅是这些，但就我而言，这已经足够了。

     private static void AddCommandLineParametersToStartupOptions(InstallHostSettings installSettings)
     {
            var serviceKey = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(
                $"SYSTEM\\CurrentControlSet\\Services\\{installSettings.ServiceName}",
                true);

            if (serviceKey == null)
            {
                throw new Exception($"Could not locate Registry Key for service '{installSettings.ServiceName}'");
            }

            var arguments = Environment.GetCommandLineArgs();

            string programName = null;
            StringBuilder argumentsList = new StringBuilder();

            for (int i = 0; i < arguments.Length; i++)
            {
                if (i == 0)
                {
                    // program name is the first argument
                    programName = arguments[i];
                }
                else
                {
                    // Remove these servicename and instance arguments as TopShelf adds them as well
                    // Remove install switch
                    if (arguments[i].StartsWith("-servicename", StringComparison.InvariantCultureIgnoreCase) |
                        arguments[i].StartsWith("-instance", StringComparison.InvariantCultureIgnoreCase) |
                        arguments[i].StartsWith("install", StringComparison.InvariantCultureIgnoreCase))
                    {
                        continue;
                    }
                    argumentsList.Append(" ");
                    argumentsList.Append(arguments[i]);
                }
            }

            // Apply the arguments to the ImagePath value under the service Registry key
            var imageName = $"\"{Environment.CurrentDirectory}\\{programName}\" {argumentsList.ToString()}";
            serviceKey.SetValue("ImagePath", imageName, Microsoft.Win32.RegistryValueKind.String);
}

Answer 2

此时你不能轻易做到这一点。我会在邮件列表上查看此主题

https://groups.google.com/d/msg/topshelf-discuss/Xu4XR6wGWxw/GFzmKdn_MeYJ