Src/Private/Resolve-LabSwitch.ps1
function Resolve-LabSwitch { <# .SYNOPSIS Resolves the specified switch using configuration data. #> [CmdletBinding()] [OutputType([System.Collections.Hashtable])] param ( ## Switch Id/Name [Parameter(Mandatory, ValueFromPipeline)] [System.String] $Name, ## PowerShell DSC configuration document (.psd1) containing lab metadata. [Parameter(Mandatory, ValueFromPipelineByPropertyName)] [System.Collections.Hashtable] [Microsoft.PowerShell.DesiredStateConfiguration.ArgumentToConfigurationDataTransformationAttribute()] $ConfigurationData ) process { $hostDefaults = Get-ConfigurationData -Configuration Host; $networkSwitch = $ConfigurationData.NonNodeData.$($labDefaults.ModuleName).Network.Where({ $_.Name -eq $Name }); if ($hostDefaults.DisableSwitchEnvironmentName -eq $false) { ## Prefix/suffix switch name $Name = Resolve-LabEnvironmentName -Name $Name -ConfigurationData $ConfigurationData; } if ($networkSwitch) { $networkHashtable = @{}; foreach ($key in $networkSwitch.Keys) { [ref] $null = $networkHashtable.Add($key, $networkSwitch.$Key); } $networkSwitch = New-LabSwitch @networkHashtable; } elseif (Hyper-V\Get-VMSwitch -Name $Name -ErrorAction SilentlyContinue) { $existingSwitch = Hyper-V\Get-VMSwitch -Name $Name; ## Ensure that we only resolve a single switch as Hyper-V will allow (#326) if ($existingSwitch -is [System.Array]) { throw ($localized.AmbiguousSwitchNameError -f $Name); } Write-Warning -Message ($localized.UsingExistingSwitchWarning -f $Name); ## Use an existing virtual switch with a matching name if one exists $networkSwitch = @{ Name = $existingSwitch.Name; Type = $existingSwitch.SwitchType; AllowManagementOS = $existingSwitch.AllowManagementOS; IsExisting = $true; } if (($existingSwitch.NetAdapterInterfaceDescription).Name) { $existingSwitchAdapter = Get-NetAdapter -InterfaceDescription $existingSwitch.NetAdapterInterfaceDescription; $networkSwitch['NetAdapterName'] = $existingSwitchAdapter.Name; } } else { ## Create an internal switch $networkSwitch = @{ Name = $Name; Type = 'Internal'; } } return $networkSwitch; } #end process } #end function # 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