Question

#Calls to this function magically disappear
Function GetAWSServer([string]$myServer, [Amazon.Runtime.SessionAWSCredentials]$myCreds)
{
    Write-Output "GetAWSServer"
    $appFilter = '*'+$myServer+'*'
    $filter = New-Object Amazon.EC2.Model.Filter
    $filter.Name = 'tag:Name'
    $filter.Value = $appFilter
    Write-Output "Filter: " $filter
    try
    {
        $myInstance = (Get-EC2Instance -Credential $myCreds -Region ap-southeast-2 -Filter $filter) | Select -ExpandProperty Instances
    } catch { $error[0] }

    return $myInstance
}

这个功能看起来合情合理吧？好吧，当它被调用时，没有错误，但绝对没有任何反应。这是一个示例电话。

Write-Output "Checking if $server exists and is awake ..."

##### FIXME: Seriously, wtf?! Program doesn't seem to access the function
$instance
try
{
    $instance = GetAWSServer($server, $awsCreds)
} catch {$error[0]}

$wasAwake = $true
if(-Not $instance.InstanceId) 
{
    Write-Output "Failure!"
    $jobStatus = "Failure"
    $jobOutput = "Server $server does not exist in the AWS workspace.`n `n"
    continue
} else 
{
    #$wasAwake = WaitForAWSServer($instance, $awsCreds)
    if( -Not $wasAwake ) { Write-Output $i.ServerInstalled + " was woken up" }
}

输出：

Checking if pawshrp4001 exists and is awake ...
Failure!

完全跳过函数调用。怎么样？

Answer 1

在PowerShell中，参数参数由空格分隔，而不是逗号。

调用该函数的正确方法是：

GetAWSServer $server $awsCreds

或（使用命名参数）：

GetAWSServer -myServer $server -myCreds $AwsCreds

PowerShell：函数调用消失了吗？

1 个答案: