MiniLab

0.8.4

Private/InstallHyperVFeatures.ps1

                                function InstallHyperVFeatures {

    [CmdletBinding()]

    Param (

        [Parameter(Mandatory=$False)]

        [switch]$AllowRestarts,

        [Parameter(Mandatory=$False)]

        [string]$ParentFunction

    )

    # Import the Dism Module

    if ($(Get-Module).Name -notcontains "Dism") {

        try {

            Import-Module Dism

        }

        catch {

            # Using full path to Dism Module Manifest because sometimes there are issues with just 'Import-Module Dism'

            $DismModuleManifestPaths = $(Get-Module -ListAvailable -Name Dism).Path

            foreach ($MMPath in $DismModuleManifestPaths) {

                try {

                    Import-Module $MMPath -ErrorAction Stop

                    break

                }

                catch {

                    Write-Verbose "Unable to import $MMPath..."

                }

            }

        }

    }

    if ($(Get-Module).Name -notcontains "Dism") {

        Write-Error "Problem importing the Dism PowerShell Module! Unable to proceed with Hyper-V install! Halting!"

        $global:FunctionResult = "1"

        return

    }

    $HyperVFeaturesOSAgnostic = $(Get-WindowsOptionalFeature -Online | Where-Object {$_.FeatureName -match "Hyper"}).FeatureName

    [System.Collections.ArrayList]$HyperVFeaturesInstallResults = @()

    [System.Collections.ArrayList]$HyperVFeatureInstallFailures = @()

    foreach ($FeatureToInstall in $HyperVFeaturesOSAgnostic) {

        try {

            $HyperVFeatureInstallResult = InstallFeatureDism -Feature $FeatureToInstall -ParentFunction $ParentFunction

            if ($HyperVFeatureInstallResult.RestartNeeded -eq $True) {

                $null = $HyperVFeaturesInstallResults.Add($HyperVFeatureInstallResult)

            }

        }

        catch {

            Write-Error $_

            Write-Warning "The InstallFeatureDism function failed to install the Feature $FeatureToInstall!"

            $null = $HyperVFeatureInstallFailures.Add($FeatureToInstall)

        }

    }

    if ($HyperVFeatureInstallFailures.Count -gt 0) {

        Write-Warning "The following Hyper-V Features failed to install:`n$($HyperVFeatureInstallFailures -join "`n")"

    }

    if ($HyperVFeaturesInstallResults.Count -gt 0 -or $HyperVFeatureInstallFailures.Count -gt 0) {

        if ($AllowRestarts) {

            Restart-Computer -Confirm:$false -Force

        }

        else {

            Write-Warning "You must restart $env:ComputerName before proceeding!"

        }

    }

    if ($HyperVFeaturesInstallResults.Count -eq 0 -and $HyperVFeatureInstallFailures.Count -eq 0) {

        Write-Warning "All Hyper-V features are already installed. No action taken!"

    }

    else {

        [pscustomobject]@{

            InstallResults      = $HyperVFeaturesInstallResults

            InstallFailures     = $HyperVFeatureInstallFailures

        }

    }

}

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