Question

我们有大约六打服务器ftp一对文本文件，状态每五分钟更新一次。我们尝试使用Windows任务计划程序和Powershell脚本的组合作为监视器和警报引擎。该脚本正在查找在过去60分钟内未刷新的文件，并在“确定”以外的任何条件下读取文件。我们希望计划的任务每五分钟运行一次。

当$ statusfiles中定义的文件的某个while条件为真时（参见下面的脚本），脚本在等待条件为false而不是处理下一个文件时挂起同一个文件。列出并在后台查看问题文件。如果任何状态文件报告了问题，我们想在脚本运行后立即知道。

在我的第一个版本中，我使用了If-ElseIf-Else方法。这给了我正在寻找的即时通知，但如果我不循环警报条件，我不知道如何设置重试间隔（$ retryinterval）给我们一个宽限期来修复底层问题。

是否可以使foreach方法与$ statusfiles中定义的所有文件并行运行？这会是系统密集型的吗？还是有其他方法我没有看到？

提前感谢您的帮助！

$erroractionpreference="SilentlyContinue"

$filepath = "\\Server\DirectoryA\DirectoryB\DirectoryC"
$statusfiles = "$filepath\opmessage21.txt","$filepath\pgmessage21.txt","$filepath\opmessage23.txt","$filepath\pgmessage23.txt","$filepath\opmessage24.txt","$filepath\pgmessage24.txt","$filepath\opmessage25.txt","$filepath\pgmessage25.txt","$filepath\opmessage26.txt","$filepath\pgmessage26.txt"
$agelimit = "60"
$retryinterval = "1800"
$to = "recipient1@email.com","recipient2@email.com","recipient3@email.com","recipient4@email.com"
$from = "alert@email.com"
$smtp = "smtp.server.com"
$port = "25"

function send-email
{
    Send-MailMessage -Body "$body" -to $to -from $from -Subject "$subject" -smtp $smtp
}

foreach ($statusfile in $statusfiles) {

    # Initialize the filestale and file error variables and strip the path and extension from $statusfile
    $filestale = 0
    $fileerror = 0
    $messageid = $statusfile.split('\.')[-2]

    # Get LastWriteTime of the file and alert the admin if LastWriteTime is older than X minutes
    $lastupdated = (get-childitem $statusfile).LastWriteTime

    while ($lastupdated -lt (get-date).AddMinutes(-$agelimit)) {
        $filestale = 1
        write-host "$messageid is older than $agelimit minutes. (Last updated: $lastupdated)"
        $subject = "$messageid is older than $agelimit minutes"
        $body = "Last updated: $lastupdated"
        send-email
        start-sleep -s $retryinterval
        $lastupdated = (get-childitem $statusfile).LastWriteTime
    }

    # Alert the admin the file is no longer outdated
    if ($filestale = 1) {
        $filestale = 0
        write-host "$messageid has been refreshed. (Last updated: $lastupdated)"
        $subject = "$messageid has been refreshed"
        $body = "Last updated: $lastupdated"
        send-email
    }

    # Check the file for an error and alert the admin if the status is not OK
    $messagecontents = Get-Content -Path "$statusfile" -Raw

    while ($messagecontents -ne 'OK') {
        $fileerror = 1
        write-host "$messageid reported the following error: $messagecontents (Last updated: $lastupdated)"
        $subject = "Error reported by $messageid"
        $body = "$messagecontents (Last updated: $lastupdated)"
        send-email
        start-sleep -s $retryinterval
        $messagecontents = Get-Content -Path "$statusfile" -Raw
        $lastupdated = (get-childitem $statusfile).LastWriteTime
        }

    # Alert the admin the status is now OK
    if ($fileerror = 1) {
        $fileerror = 0
        write-host "$messageid indicates status OK. (Last updated: $lastupdated)"
        $subject = "$messageid indicates status OK"
        $body = "Last updated: $lastupdated"
        send-email
    }

}

Powershell脚本，用于并行监视文件列表

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