Public/Invoke-LabSnippet.ps1
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function Invoke-LabSnippet { [CmdletBinding()] param ( [Parameter(Mandatory, ValueFromPipeline, ValueFromPipelineByPropertyName)] [string[]] $Name, [hashtable] $LabParameter = @{} ) begin { $scriptBlockOrder = @{} } process { foreach ($snip in $Name) { $snip = $snip -replace 'AutomatedLab\..*\.' $schnippet = Get-LabSnippet -Name $snip [string[]]$dependencies = ($schnippet.Tag | Where-Object { $_.StartsWith('DependsOn_') }) -replace 'DependsOn_' $scriptBlockOrder[($schnippet.Name -replace 'AutomatedLab\..*\.')] = $dependencies } } end { try { $order = Get-TopologicalSort -EdgeList $scriptBlockOrder -ErrorAction Stop Write-PSFMessage -Message "Calculated dependency graph: $($order -join ',')" } catch { Write-Error -ErrorRecord $_ return } $snippets = Get-LabSnippet -Name $order if ($snippets.Count -ne $order.Count) { Write-PSFMessage -Level Error -Message "Missing dependencies in graph: $($order -join ',')" } foreach ($blockName in $order) { $schnippet = Get-LabSnippet -Name $blockName $block = $schnippet.ScriptBlock $clonedParam = $LabParameter.Clone() $commonParameters = [System.Management.Automation.Internal.CommonParameters].GetProperties().Name $commandParameterKeys = $schnippet.Parameters $parameterKeys = $clonedParam.Keys.GetEnumerator() | ForEach-Object { $_ } [string[]]$keysToRemove = if ($parameterKeys -and $commandParameterKeys) { Compare-Object -ReferenceObject $commandParameterKeys -DifferenceObject $parameterKeys | Select-Object -ExpandProperty InputObject } else { @() } $keysToRemove = $keysToRemove + $commonParameters | Select-Object -Unique #remove the common parameters foreach ($key in $keysToRemove) { $clonedParam.Remove($key) } . $block @clonedParam } } } |