DSCResources/ResourceSetHelper.psm1
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Set-StrictMode -version Latest <# .SYNOPSIS Builds a string with all common parameters shared across all resource nodes. #> function New-ResourceCommonParameterString { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [string] $KeyParameterName, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [string[]] $CommonParameterNames, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.Collections.Hashtable] $Parameters ) [System.Text.StringBuilder] $stringBuilder = New-Object System.Text.StringBuilder # Build optional parameters for invoking the inbuilt resource foreach ($parameterName in $Parameters.Keys) { if ($parameterName -ne $KeyParameterName -and $parameterName -in $CommonParameterNames) { $parameterValue = $Parameters[$parameterName] if ($null -ne $parameterValue) { if ($parameterValue -is [System.String]) { $stringBuilder.AppendFormat('{0} = "{1}"', $parameterName, $parameterValue) | Out-Null $stringBuilder.AppendLine() | Out-Null } else { $stringBuilder.Append($parameterName + ' = $' + $parameterName) | Out-Null $stringBuilder.AppendLine() | Out-Null } } } } return $stringBuilder.ToString() } <# .SYNOPSIS Builds a string with all resource nodes. .DESCRIPTION Builds a string with all resource nodes based on the key parameter along with the other optional parameters provided in the composite configuration. For example, while installing multiple features using WindowsFeature resource, output of this method would be: $KeyParam = @("Telnet-client","web-server") WindowsFeature Resource0 { Name = "Telnet-client" #Name provided in the composite configuration Ensure = "Present" IncludeAllSubFeature = True } WindowsFeature Resource1 { Name = "Web-Server" #Name provided in the composite configuration Ensure = "Present" IncludeAllSubFeature = True } #> function New-ResourceString { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [string[]] $KeyParameterValues, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [string] $KeyParameterName, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [string] $CommonParameters, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [string] $ResourceName, [ValidateNotNullOrEmpty()] [string] $ModuleName = "xPSDesiredStateConfiguration", [ValidateNotNullOrEmpty()] [string] $DefaultParameters ) [System.Text.StringBuilder] $stringBuilder = New-Object System.Text.StringBuilder $stringBuilder.AppendFormat('Import-DscResource -Name {0} -ModuleName {1}', $ResourceName, $ModuleName) | Out-Null $stringBuilder.AppendLine() | Out-Null # Add the resource nodes and their common parameters [int] $resourceCount = 0 foreach ($keyParameterValue in $KeyParameterValues) { $stringBuilder.AppendFormat('{0} Resource{1}', $ResourceName, $resourceCount) | Out-Null $stringBuilder.AppendLine() | Out-Null $stringBuilder.AppendLine('{') | Out-Null $stringBuilder.AppendFormat($KeyParameterName + ' = "{0}"', $keyParameterValue) | Out-Null $stringBuilder.AppendLine() | Out-Null $stringBuilder.AppendLine($CommonParameters) | Out-Null if ($DefaultParameters) { $stringBuilder.AppendLine($DefaultParameters) | Out-Null } $stringBuilder.AppendLine('}') | Out-Null $resourceCount++ } return $stringBuilder.ToString() } Export-ModuleMember -Function ` New-ResourceCommonParameterString, ` New-ResourceString |