如何在 foreach 并行循环中调用函数
How to call a function within a foreach parallel loop
晚上好。
我是第一次尝试使用并行性,但我不明白如何在 foreach 循环中调用函数。
我收到一系列错误:无法将参数绑定到参数 'Path' 因为它为空。
这是我目前所做的:
$FolderPath = "C:\myfolder\"
function AppendLog ($client) {
$so = New-CimSessionOption -Protocol 'DCOM'
$s = New-CimSession -ComputerName $client -SessionOption $so
Add-Content -Path (join-path $folderpath "LOGS.txt") -Value ( (get-date -Format "[yyyy.MM.dd HH:mm:ss]").tostring() + $client + " -PING: OK")
$arch = Get-CimInstance –query "select * from win32_operatingsystem" -CimSession $s | select -expandproperty osarchitecture
Add-Content -Path (join-path $folderpath "LOGS.txt") -Value ( (get-date -Format "[yyyy.MM.dd HH:mm:ss]").tostring() + $client + " -ARCH:" + $arch )
$lastboot = Get-CimInstance –query "select * from win32_operatingsystem" -CimSession $s | select -expandproperty lastbootuptime
Add-Content -Path (join-path $folderpath "LOGS.txt") -Value ( (get-date -Format "[yyyy.MM.dd HH:mm:ss]").tostring() + $client + " -BOOT:" + $lastboot )
}
$funcDef = $function:AppendLog.ToString()
$clients = get-content -path (join-path $folderPath "client.txt")
$clients | ForEach-Object -parallel {
if (test-connection $_ -count 2 -Quiet)
{
$function:AppendLog = $using:funcDef
AppendLog ($_)
}
} -throttlelimit 3
Could you explain me how to pass my path?
我的评论不好,你得到的错误很可能来自你的函数。 Join-Path
:
引发错误
PS /> Join-Path $null 'Logs.txt'
Join-Path : Cannot bind argument to parameter 'Path' because it is null.
At line:1 char:11
+ Join-Path $null 'Logs.txt'
+ ~~~~~
+ CategoryInfo : InvalidData: (:) [Join-Path], ParameterBindingValidationException
+ FullyQualifiedErrorId : ParameterArgumentValidationErrorNullNotAllowed,Microsoft.PowerShell.Commands.JoinPathCommand
原因是 $FolderPath
不存在于您的并行循环范围内。 $folderpath
应该在您的函数中替换为 $using:folderpath
。
附带说明一下,在并行执行时向同一个文件添加信息似乎不是一个好主意。
最后一次编辑,我知道这是否是为了测试 ForEach-Object -Parallel
的工作原理,但同样,如果该 cmdlet 允许同时对多个主机进行远程查询/远程执行,请让该 cmdlet 为您处理,效率更高
至于代码,这是我将与您已有的代码一起使用的代码:
$FolderPath = "C:\myfolder\"
$sessionOption = New-CimSessionOption -Protocol 'DCOM'
$clients = Get-Content -Path (Join-Path $FolderPath -ChildPath "Client.txt")
$results = $clients | ForEach-Object -Parallel {
$out = @{
Time = [datetime]::Now.ToString('[yyyy.MM.dd HH:mm:ss]')
ComputerName = $_
}
if ($ping = Test-Connection $_ -Count 2 -Quiet)
{
$session = New-CimSession -ComputerName $_ -SessionOption $using:sessionOption
$OSInfo = Get-CimInstance -CimSession $session -ClassName win32_operatingSystem
Remove-CimSession $session
}
$out.Ping = $ping
$out.Arch = $OSInfo.OSArchitecture
$out.LastBoot = $OSInfo.LastBootUpTime
[pscustomobject]$out
} -ThrottleLimit 3
$results | Export-Csv "$myFolder\LOGS.csv" -NoTypeInformation
这将输出如下所示的对象:
Time ComputerName Ping OSArchitecture LastBoot
---- ------------ ---- -------------- --------
[2021.06.19 20:06:00] ComputerName01 True 64-bit 6/16/2021 11:47:16 AM
[2021.06.19 20:07:00] ComputerName02 False
[2021.06.19 20:08:00] ComputerName03 True 64-bit 6/13/2021 11:47:16 AM
[2021.06.19 20:09:00] ComputerName04 True 64-bit 6/14/2021 11:47:16 AM
[2021.06.19 20:10:00] ComputerName05 True 64-bit 6/15/2021 11:47:16 AM
可以很好地导出为 CSV 而不是文本文件。 P.D.: 对不起语法高亮:(
晚上好。
我是第一次尝试使用并行性,但我不明白如何在 foreach 循环中调用函数。
我收到一系列错误:无法将参数绑定到参数 'Path' 因为它为空。
这是我目前所做的:
$FolderPath = "C:\myfolder\"
function AppendLog ($client) {
$so = New-CimSessionOption -Protocol 'DCOM'
$s = New-CimSession -ComputerName $client -SessionOption $so
Add-Content -Path (join-path $folderpath "LOGS.txt") -Value ( (get-date -Format "[yyyy.MM.dd HH:mm:ss]").tostring() + $client + " -PING: OK")
$arch = Get-CimInstance –query "select * from win32_operatingsystem" -CimSession $s | select -expandproperty osarchitecture
Add-Content -Path (join-path $folderpath "LOGS.txt") -Value ( (get-date -Format "[yyyy.MM.dd HH:mm:ss]").tostring() + $client + " -ARCH:" + $arch )
$lastboot = Get-CimInstance –query "select * from win32_operatingsystem" -CimSession $s | select -expandproperty lastbootuptime
Add-Content -Path (join-path $folderpath "LOGS.txt") -Value ( (get-date -Format "[yyyy.MM.dd HH:mm:ss]").tostring() + $client + " -BOOT:" + $lastboot )
}
$funcDef = $function:AppendLog.ToString()
$clients = get-content -path (join-path $folderPath "client.txt")
$clients | ForEach-Object -parallel {
if (test-connection $_ -count 2 -Quiet)
{
$function:AppendLog = $using:funcDef
AppendLog ($_)
}
} -throttlelimit 3
Could you explain me how to pass my path?
我的评论不好,你得到的错误很可能来自你的函数。 Join-Path
:
PS /> Join-Path $null 'Logs.txt'
Join-Path : Cannot bind argument to parameter 'Path' because it is null.
At line:1 char:11
+ Join-Path $null 'Logs.txt'
+ ~~~~~
+ CategoryInfo : InvalidData: (:) [Join-Path], ParameterBindingValidationException
+ FullyQualifiedErrorId : ParameterArgumentValidationErrorNullNotAllowed,Microsoft.PowerShell.Commands.JoinPathCommand
原因是 $FolderPath
不存在于您的并行循环范围内。 $folderpath
应该在您的函数中替换为 $using:folderpath
。
附带说明一下,在并行执行时向同一个文件添加信息似乎不是一个好主意。
最后一次编辑,我知道这是否是为了测试 ForEach-Object -Parallel
的工作原理,但同样,如果该 cmdlet 允许同时对多个主机进行远程查询/远程执行,请让该 cmdlet 为您处理,效率更高
至于代码,这是我将与您已有的代码一起使用的代码:
$FolderPath = "C:\myfolder\"
$sessionOption = New-CimSessionOption -Protocol 'DCOM'
$clients = Get-Content -Path (Join-Path $FolderPath -ChildPath "Client.txt")
$results = $clients | ForEach-Object -Parallel {
$out = @{
Time = [datetime]::Now.ToString('[yyyy.MM.dd HH:mm:ss]')
ComputerName = $_
}
if ($ping = Test-Connection $_ -Count 2 -Quiet)
{
$session = New-CimSession -ComputerName $_ -SessionOption $using:sessionOption
$OSInfo = Get-CimInstance -CimSession $session -ClassName win32_operatingSystem
Remove-CimSession $session
}
$out.Ping = $ping
$out.Arch = $OSInfo.OSArchitecture
$out.LastBoot = $OSInfo.LastBootUpTime
[pscustomobject]$out
} -ThrottleLimit 3
$results | Export-Csv "$myFolder\LOGS.csv" -NoTypeInformation
这将输出如下所示的对象:
Time ComputerName Ping OSArchitecture LastBoot
---- ------------ ---- -------------- --------
[2021.06.19 20:06:00] ComputerName01 True 64-bit 6/16/2021 11:47:16 AM
[2021.06.19 20:07:00] ComputerName02 False
[2021.06.19 20:08:00] ComputerName03 True 64-bit 6/13/2021 11:47:16 AM
[2021.06.19 20:09:00] ComputerName04 True 64-bit 6/14/2021 11:47:16 AM
[2021.06.19 20:10:00] ComputerName05 True 64-bit 6/15/2021 11:47:16 AM
可以很好地导出为 CSV 而不是文本文件。 P.D.: 对不起语法高亮:(