f# - 安装 Windows 服务时出错(在 F# 中)

Question

我的问题如下:当我尝试安装我的 Windows 服务时，出现以下错误:

片段:
...
No public installers with the RunInstallerAttribute.Yes attribute could be found in the <path to exe> assembly.
...


我关注这个tutorial

我有一个 Program.fs文件包含:

[<RunInstaller(true)>]
type public FSharpServiceInstaller() =
    inherit Installer()
    do
        < some logic, doesn't really matter >

这应该足够了，事实上，我什至认为我不需要添加 public类型定义的关键字。使用 InstallUtil.exe 安装此可执行文件给我与使用以下代码安装它相同的错误:

[<EntryPoint>]
let main args =

    if Environment.UserInteractive then
        let parameter = String.Concat(args);
        match parameter with
        | "-i" -> ManagedInstallerClass.InstallHelper [| Assembly.GetExecutingAssembly().Location |]
        | "-u" -> ManagedInstallerClass.InstallHelper [| "/u"; Assembly.GetExecutingAssembly().Location |]
        | _ -> printf "Not allowed!\n" 
    else 
        ServiceBase.Run [| new CreditToolsService() :> ServiceBase |];
    0

我曾尝试以管理员身份和我的普通帐户在 PowerShell、cmd 和 Visual Studio CLI 中运行此脚本，但我不断收到相同的错误。如果有人知道我做错了什么，我将不胜感激。

Answer 1

好吧，现在开始...

我查看了 user1758475 提供的代码，然后随机开始将解决方案复制粘贴到应用程序中。 Don Symes 的解决方案“奏效了”，我终于明白了原因:在我的源代码中我没有(他也有)命名空间声明。看来这就是罪魁祸首!添加命名空间后，安装程序运行得非常棒。

正如 Curt Nichols 指出的那样，安装程序不应该在模块中，因为模块有效地隐藏了调用代码中的类型。

感谢您帮助解决这个问题。

对于那些想要查看工作示例的人:

namespace FileWatcher
open System
open System.Reflection
open System.ComponentModel
open System.Configuration.Install
open System.ServiceProcess
open System.IO
open System.Configuration

type FileWatcherService() =
    inherit ServiceBase(ServiceName = "FileWatcher")

    let createEvent = fun (args: FileSystemEventArgs) -> 
                    printf "%s has been %s\n" args.FullPath (args.ChangeType.ToString().ToLower()) 
                    |> ignore

    override x.OnStart(args) =
        let fsw = new FileSystemWatcher ()
        fsw.Path                    <- "C:\TEMP"
        fsw.NotifyFilter            <- NotifyFilters.LastAccess ||| NotifyFilters.LastWrite ||| NotifyFilters.FileName ||| NotifyFilters.DirectoryName ||| NotifyFilters.CreationTime
        fsw.Filter                  <- "*.txt"
        fsw.EnableRaisingEvents     <- true
        fsw.IncludeSubdirectories   <- true
        fsw.Created.Add(createEvent)

    override x.OnStop() =
        printf "Stopping the FileWatcher service"

[<RunInstaller(true)>]
type public FSharpServiceInstaller() =
    inherit Installer()
    do 

        // Specify properties of the hosting process
        new ServiceProcessInstaller
            (Account = ServiceAccount.LocalSystem)
        |> base.Installers.Add |> ignore

        // Specify properties of the service running inside the process
        new ServiceInstaller
            ( DisplayName = "AAA FileWatcher Service", 
            ServiceName = "AAAFileWatcherService",
            StartType = ServiceStartMode.Automatic )
        |> base.Installers.Add |> ignore


module Program =
    [<EntryPoint>]
    let main args =

        printf "starting the application...\n"


        if Environment.UserInteractive then
            let parameter = String.Concat(args);
            match parameter with
            | "-i" -> ManagedInstallerClass.InstallHelper [| Assembly.GetExecutingAssembly().Location |]
            | "-u" -> ManagedInstallerClass.InstallHelper [| "/u"; Assembly.GetExecutingAssembly().Location |]
            | _ -> printf "Not allowed!\n" 
        else 
            ServiceBase.Run [| new FileWatcherService() :> ServiceBase |];
        0