Src/Private/Resolve-NodePropertyValue.ps1
function Resolve-NodePropertyValue { <# .SYNOPSIS Resolves a node's properites. .DESCRIPTION Resolves a lab virtual machine properties from the lab defaults, Node\* node and Node\NodeName node. Properties defined on the wildcard node override the lab defaults. Properties defined at the node override the wildcard node settings. #> [CmdletBinding()] [OutputType([System.Collections.Hashtable])] param ( ## Lab VM/Node name [Parameter(Mandatory, ValueFromPipeline)] [System.String] $NodeName, ## Specifies a PowerShell DSC configuration document (.psd1) containing the lab configuration. [Parameter(Mandatory, ValueFromPipelineByPropertyName)] [System.Collections.Hashtable] [Microsoft.PowerShell.DesiredStateConfiguration.ArgumentToConfigurationDataTransformationAttribute()] $ConfigurationData, ## Do not enumerate the AllNodes.'*' node [Parameter(ValueFromPipelineByPropertyName)] [System.Management.Automation.SwitchParameter] $NoEnumerateWildcardNode ) process { $node = @{ }; if (-not $NoEnumerateWildcardNode) { ## Retrieve the AllNodes.* properties $ConfigurationData.AllNodes.Where({ $_.NodeName -eq '*' }) | ForEach-Object { foreach ($key in $_.Keys) { $node[$key] = $_.$key; } } } ## Retrieve the AllNodes.$NodeName properties $ConfigurationData.AllNodes.Where({ $_.NodeName -eq $NodeName }) | ForEach-Object { foreach ($key in $_.Keys) { $node[$key] = $_.$key; } } ## Check VM defaults $labDefaultProperties = Get-ConfigurationData -Configuration VM; $properties = Get-Member -InputObject $labDefaultProperties -MemberType NoteProperty; foreach ($propertyName in $properties.Name) { ## Int32 values of 0 get coerced into $false! if (($node.$propertyName -isnot [System.Int32]) -and (-not $node.ContainsKey($propertyName))) { $node[$propertyName] = $labDefaultProperties.$propertyName; } } $resolveLabEnvironmentNameParams = @{ Name = $NodeName; ConfigurationData = $ConfigurationData; } ## Set the node's friendly/display name with any prefix/suffix $node['NodeDisplayName'] = Resolve-LabEnvironmentName @resolveLabEnvironmentNameParams; ## Use the prefixed/suffixed NetBIOSName is specified if ($node.UseNetBIOSName -eq $true) { $node['NodeDisplayName'] = $node['NodeDisplayName'].Split('.')[0]; } $moduleName = $labDefaults.ModuleName; ## Rename/overwrite existing parameter values where $moduleName-specific parameters exist foreach ($key in @($node.Keys)) { if ($key.StartsWith("$($moduleName)_")) { $node[($key.Replace("$($moduleName)_",''))] = $node.$key; $node.Remove($key); } } return $node; } #end process } #end function ResolveLabVMProperties # 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