Powershell - Failing to return as objects to variables-CodePudding

I have a powershell script that I am trying to use to destroy a subscriptions resource groups based on the environment.

However I seem to get the following error everytime I try to get the resource names into a variable as objects.

# Set the variables here
$_subscription = "Test Data Platform"
$_environment = "prd" #prd, dev, uat

Connect-AzAccount -Subscription $_subscription

Write-Host ("The acquired list of resource group names is as below:")
$rgs=Get-AzResourceGroup -Tag @{'environment'=$_environment} | Select-Object -Property ResourceGroupName

$rgs | ForEach-Object -Parallel  {
    $r = Get-AzResourceGroup -Name $_ -Tag @{'environment'=$_environment} -ErrorAction SilentlyContinue
    if ($r) {
        $message = "We have a resource group called {0}" -f $_
        Write-PSFMessage $message -Level Output
        try {
            $message = "###   Removing resource group {0}" -f $_
            Write-PSFMessage $message -Level Output
            Remove-AzResourceGroup -Name $_ -Confirm:$false -Force | Out-Null
            $message = "###   Resource group {0} Removed" -f $_
            Write-PSFMessage $message -Level Output
        }
        catch {
            $message = "###   FAILED - REMOVING -Resource group {0}" -f $_
            Write-PSFMessage $message -Level Significant
        }
    }
    else {
        $message = "There is no resource group called {0}" -f $_
        Write-PSFMessage $message -Level Output
    }
} -ThrottleLimit 25

Error

ForEach-Object : Parameter set cannot be resolved using the specified named parameters.
At C:\Test\destroy-dev-az.ps1:10 char:8
  $rgs | ForEach-Object -Parallel  {
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~
      CategoryInfo          : MetadataError: (:) [ForEach-Object], ParameterBindingException
      FullyQualifiedErrorId : AmbiguousParameterSet,Microsoft.PowerShell.Commands.ForEachObjectCommand

Run it in Powershell 7 instead and got the following error:

The acquired list of resource group names is as below:
[15:44:46][<ScriptBlock>] There is no resource group called @{ResourceGroupName=Test2}
[15:44:47][<ScriptBlock>] There is no resource group called @{ResourceGroupName=Test1}

UPDATE

Resolved the above error by changing $rgs to $rgs.ResourceGroupName.

CodePudding user response：

As Santiago Squarzon has mentioned ForEach-Object -Parallel was introduced in PowerShell 7.0 Preview 3 , so If you are using Powershell ISE it will be of Version 5.0. So , You will get error as below :

If you run in Powershell 7 , then the issue is that the command you are using to get resource group names by using select-object returns output with a CRLF endings and using that as a parameter in another command will give you below errors:

ERROR: Parameter 'resource_group_name' must conform to the following pattern: '^[-\\w\\._\\(\\)] $'.

OR

So , inorder to solve that you will need to get the resource names with this command $rgs=(Get-AzResourceGroup).ResourceGroupName. so your over all code will be like below :

# Set the variables here
$_subscription = "Test Data Platform"
$_environment = "prd" #prd, dev, uat

Connect-AzAccount -Subscription $_subscription

Write-Host ("The acquired list of resource group names is as below:")
$rgs=(Get-AzResourceGroup -Tag @{'environment'=$_environment}).ResourceGroupName

$rgs | ForEach-Object -Parallel  {
    $r = Get-AzResourceGroup -Name $_ -Tag @{'environment'=$_environment} -ErrorAction SilentlyContinue
    if ($r) {
        $message = "We have a resource group called {0}" -f $_
        Write-PSFMessage $message -Level Output
        try {
            $message = "###   Removing resource group {0}" -f $_
            Write-PSFMessage $message -Level Output
            Remove-AzResourceGroup -Name $_ -Confirm:$false -Force | Out-Null
            $message = "###   Resource group {0} Removed" -f $_
            Write-PSFMessage $message -Level Output
        }
        catch {
            $message = "###   FAILED - REMOVING -Resource group {0}" -f $_
            Write-PSFMessage $message -Level Significant
        }
    }
    else {
        $message = "There is no resource group called {0}" -f $_
        Write-PSFMessage $message -Level Output
    }
} -ThrottleLimit 25

Output: