Lability

0.15.0

Src/Public/Test-LabResource.ps1

                                function Test-LabResource {

<#

    .SYNOPSIS

        Tests whether a lab's resources are present.

#>

    [CmdletBinding()]

    [OutputType([System.Boolean])]

    param (

        ## PowerShell DSC configuration document (.psd1) containing lab metadata.

        [Parameter(Mandatory, ValueFromPipeline)]

        [System.Collections.Hashtable]

        [Microsoft.PowerShell.DesiredStateConfiguration.ArgumentToConfigurationDataTransformationAttribute()]

        $ConfigurationData,

        ## Lab resource Id to test.

        [Parameter(ValueFromPipelineByPropertyName)]

        [ValidateNotNullOrEmpty()]

        [System.String] $ResourceId,

        ## Lab resource path

        [Parameter(ValueFromPipelineByPropertyName)]

        [AllowNull()]

        [System.String] $ResourcePath

    )

    begin {

        if (-not $ResourcePath) {

            $hostDefaults = Get-ConfigurationData -Configuration Host;

            $ResourcePath = $hostDefaults.ResourcePath;

        }

    }

    process {

        if ($resourceId) {

            $resources = Resolve-LabResource -ConfigurationData $ConfigurationData -ResourceId $ResourceId;

        }

        else {

            $resources = $ConfigurationData.NonNodeData.($labDefaults.ModuleName).Resource;

        }

        foreach ($resource in $resources) {

            $fileName = $resource.Id;

            if ($resource.Filename) { $fileName = $resource.Filename; }

            $testResourceDownloadParams = @{

                DestinationPath = Join-Path -Path $ResourcePath -ChildPath $fileName;;

                Uri = $resource.Uri;

            }

            if ($resource.Checksum) {

                $testResourceDownloadParams['Checksum'] = $resource.Checksum;

            }

            if (-not (Test-ResourceDownload @testResourceDownloadParams)) {

                return $false;

            }

        } #end foreach resource

        return $true;

    } #end process

} #end function

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