运行通过自动 Powershell 文件夹侦听器的 shell 脚本

Question

在过去的几天里，我一直在编写一个 Powershell 脚本，在 mcpcmag's articule. The new files will be created when an email is requested by the end user. The new file is a .sh file containing a cURL command which sends a post request to the SendGrid API.

下面是 powershell 脚本：

# Create a listener for our emailOut directory 
$watcher = New-Object System.IO.FileSystemWatcher

# Set the path and turn on the listener 
$watcher.Path = 'C:\emailOut'
$watcher.EnableRaisingEvents = $true

$action =
{
    # set the shellScript to the full path of the added file
    $shellScript = $event.SourceEventArgs.fullPath
    # get the name of the file
    $name = (Get-Item $shellScript).Name
    # set the path which the file will be moved to on completion
    $oldFolderDir = "C:\emailOut\old\" + $name
    
    # run the script
    & $shellScript

    # set the log file path
    $logFile = "C:\emailOut\emailLog_" + $(get-date -format FileDate) + ".txt"

    # set the log message
    $logInfo = $name + " ---> " + $(get-date)

    # add entry to log file
    $logInfo | Out-File $logFile -Append -encoding utf8


    # Move the script file into the historic folder
    Move-Item -Path $shellScript -Destination $oldFolderDir

}

# Start the watcher
Register-ObjectEvent $watcher 'Created' -Action $action

这些评论使该过程相当不言自明，但为了简要描述，这是发生（或应该发生）的情况：

文件进入正在观看的文件夹
Shell 脚本是运行
条目已添加到日志文件
文件被移动到旧文件夹
完成

不幸的是，我运行编写 shell 脚本的方式似乎有问题。当运行ning 这个过程时，很明显脚本是运行ning 作为一个黑框出现了几分之一秒但没有发送电子邮件。我已经检查了原始脚本，没有任何问题，因为当我双击 .sh 文件时，电子邮件已完美发送。

有什么想法吗？

在此先感谢您的帮助或建议。

Answer 1

我认为你的逻辑有问题：

File goes into folder that is being watched
[PowerShell]Shell script is run

问题是在您调用 Register-ObjectEvent 后，您的脚本结束，powershell 进程终止，这会隐式删除 FileSystemWatcher。您应该一直保留脚本运行ning 'catch' 事件。

你可以运行它通过计划任务，选项Do not start a new instance 如果有实例运行ning并设置为每N次重复分钟 （在出现故障或有人终止进程等情况下恢复脚本）。此 PowerShell 实例必须运行不断获取事件。

$eventSI = 'CustomSI_FSWCreated'

$watcher = New-Object System.IO.FileSystemWatcher
$watcher.Path = 'S:\SCRIPTS\FileTest'
$watcher.EnableRaisingEvents = $true

$action = { [System.Console]::WriteLine($event.SourceEventArgs.fullPath) }

# Start the watcher
Register-ObjectEvent -InputObject $watcher -EventName 'Created' -Action $action -SourceIdentifier $eventSI | Out-Null
try
{
    $l = 1;
    while($true)    
    {
        # Actually this timeout only sets the frequence of dots on your screen. Set it bigger if you want or remove Write-Host-s
        Wait-Event -Timeout 1 
        Write-Host "." -NoNewline
        $l++;
        if ($l -ge 40) 
        {
            Write-Host ""
            $l = 1;
        }
    }
}
finally
{
    # This executes when you press Ctrl+C
    Unregister-Event -SourceIdentifier $eventSI
    $watcher.EnableRaisingEvents = $false
    $watcher.Dispose()
    Write-Host "Unregistered FSWE"
}

Answer 2

只是想分享我最终的工作解决方案。我确实在运行脚本之前尝试了 Start-Sleep -seconds 5，但遗憾的是没有达到预期的结果。

经过反复试验，我得出了一个可行的解决方案：

# Create a listener for our emailOut directory 
$watcher = New-Object System.IO.FileSystemWatcher

# Set the path and turn on the listener 
$watcher.Path = 'C:\emailOut'
$watcher.EnableRaisingEvents = $true

$action =
{
   # set the shellScript to the full path of the added file
   $shellScript = $event.SourceEventArgs.fullPath
   # get the name of the file
   $name = (Get-Item $shellScript).Name
   #set the path which the file will be moved to on completion
   $oldFolderDir = "C:\emailOut\old\" + $name

   #### SOLUTION START ###

   #go to where bash.exe is stored
   cd "C:\Program Files\Git\bin"

   # run the script
   & .\bash.exe $shellScript

   ### SOLUTION END ###

   # set the log file path
   $logFile = "C:\emailOut\emailLog_" + $(get-date -format FileDate) + ".txt"

   # set the log message
   $logInfo = $name + " ---> " + $(get-date)

   # add entry to log file
   $logInfo | Out-File $logFile -Append -encoding utf8


   # Move the script file into the historic folder
   Move-Item -Path $shellScript -Destination $oldFolderDir

  }

  # Start the watcher
  Register-ObjectEvent $watcher 'Created' -Action $action

基本上，我通过将 cURL 脚本传递给 git bash.exe 运行我的脚本。如有任何进一步的疑问或问题，请随时与我联系。

帕特里克

运行通过自动 Powershell 文件夹侦听器的 shell 脚本

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powershell

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运行 通过自动 Powershell 文件夹侦听器的 shell 脚本

Running a shell script through an automated Powershell folder listener

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sendgrid

运行通过自动 Powershell 文件夹侦听器的 shell 脚本