powershell - 如何在Powershell中为高级功能生成非终止错误

Question

我想具有以下功能

function get-diskinfo {
    [string[]]$ComputerName
        # some stuff here
}

所以我可以像

get-diskinfo -ComputerName com1,com2,com3
if (!$?) { # I want to caller to check this, so the experience is same as built-in cmdlet
    write-error "failed to get disk info for some computer"
}

但是，在谷歌搜索之后，仍然不知道如何从get-diskinfo生成非终止错误，怎么做呢？先感谢您!

Answer 1

就目前而言，您的功能不是高级功能。将其更改为高级功能:

function Get-DiskInfo {
    [CmdletBinding()]
    param(
        [Parameter(Mandatory=$true, Position=0)]
        [Alias("CN")]
        [ValidateNotNull()]
        [string[]]
        $ComputerName
    )
    ...
}

为了访问 $pscmdlet，必须具有真正的高级功能。要编写一个非终止错误，请使用 $pscmdlet.WriteError()。您可以看中并执行以下操作:

$ex = new-object System.Management.Automation.ItemNotFoundException "Cannot find path '$Path' because it does not exist."
$category = [System.Management.Automation.ErrorCategory]::ObjectNotFound
$errRecord = new-object System.Management.Automation.ErrorRecord $ex, "PathNotFound", $category, $Path
$psCmdlet.WriteError($errRecord)