DscResources/MSFT_ScriptResource/MSFT_ScriptResource.psm1
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$errorActionPreference = 'Stop' Set-StrictMode -Version 'Latest' # Import CommonResourceHelper for Get-LocalizedData $script:dscResourcesFolderFilePath = Split-Path $PSScriptRoot -Parent $script:commonResourceHelperFilePath = Join-Path -Path $script:dscResourcesFolderFilePath -ChildPath 'CommonResourceHelper.psm1' Import-Module -Name $script:commonResourceHelperFilePath # Localized messages for verbose and error statements in this resource $script:localizedData = Get-LocalizedData -ResourceName 'MSFT_ScriptResource' <# .SYNOPSIS Runs the given get script. Should return a hashtable. .PARAMETER GetScript The script to retrieve the current state of the resource. .PARAMETER SetScript Not used in Get-TargetResource. .PARAMETER TestScript Not used in Get-TargetResource. .PARAMETER Credential The Credential to run the get script under if needed. #> function Get-TargetResource { [OutputType([System.Collections.Hashtable])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $GetScript, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $SetScript, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $TestScript, [Parameter()] [ValidateNotNull()] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Credential ) Write-Verbose -Message $script:localizedData.GetTargetResourceStartVerboseMessage $invokeScriptParameters = @{ ScriptBlock = [System.Management.Automation.ScriptBlock]::Create($GetScript) } if ($PSBoundParameters.ContainsKey('Credential')) { $invokeScriptParameters['Credential'] = $Credential } $invokeScriptResult = Invoke-Script @invokeScriptParameters if ($invokeScriptResult -is [System.Management.Automation.ErrorRecord]) { New-InvalidOperationException -Message $script:localizedData.GetScriptThrewError -ErrorRecord $invokeScriptResult } $invokeScriptResultAsHashTable = $invokeScriptResult -as [System.Collections.Hashtable] if ($null -eq $invokeScriptResultAsHashTable) { New-InvalidArgumentException -ArgumentName 'TestScript' -Message $script:localizedData.GetScriptDidNotReturnHashtable } Write-Verbose -Message $script:localizedData.GetTargetResourceEndVerboseMessage return $invokeScriptResultAsHashTable } <# .SYNOPSIS Runs the given set script. Should not return. .PARAMETER GetScript Not used in Set-TargetResource. .PARAMETER SetScript The script to set the resource to the desired state. .PARAMETER TestScript Not used in Set-TargetResource. .PARAMETER Credential The Credential to run the set script under if needed. #> function Set-TargetResource { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $GetScript, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $SetScript, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $TestScript, [Parameter()] [ValidateNotNull()] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Credential ) Write-Verbose -Message $script:localizedData.SetTargetResourceStartVerboseMessage $invokeScriptParameters = @{ ScriptBlock = [System.Management.Automation.ScriptBlock]::Create($SetScript) } if ($PSBoundParameters.ContainsKey('Credential')) { $invokeScriptParameters['Credential'] = $Credential } $invokeScriptResult = Invoke-Script @invokeScriptParameters if ($invokeScriptResult -is [System.Management.Automation.ErrorRecord]) { New-InvalidOperationException -Message $script:localizedData.SetScriptThrewError -ErrorRecord $invokeScriptResult } Write-Verbose -Message $script:localizedData.SetTargetResourceEndVerboseMessage } <# .SYNOPSIS Runs the given test script. Should return true if the resource is in the desired state and false otherwise. .PARAMETER GetScript Not used in Test-TargetResource. .PARAMETER SetScript Not used in Test-TargetResource. .PARAMETER TestScript The script to validate whether or not the resource is in the desired state. .PARAMETER Credential The Credential to run the test script under if needed. #> function Test-TargetResource { [OutputType([System.Boolean])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $GetScript, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $SetScript, [Parameter(Mandatory = $true)] [ValidateNotNullOrEmpty()] [System.String] $TestScript, [Parameter()] [ValidateNotNull()] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Credential ) Write-Verbose -Message $script:localizedData.TestTargetResourceStartVerboseMessage $invokeScriptParameters = @{ ScriptBlock = [System.Management.Automation.ScriptBlock]::Create($TestScript) } if ($PSBoundParameters.ContainsKey('Credential')) { $invokeScriptParameters['Credential'] = $Credential } $invokeScriptResult = Invoke-Script @invokeScriptParameters # If the script is returing multiple objects, then we consider the last object to be the result of the script execution. if ($invokeScriptResult -is [System.Object[]] -and $invokeScriptResult.Count -gt 0) { $invokeScriptResult = $invokeScriptResult[$invokeScriptResult.Count - 1] } if ($invokeScriptResult -is [System.Management.Automation.ErrorRecord]) { New-InvalidOperationException -Message $script:localizedData.TestScriptThrewError -ErrorRecord $invokeScriptResult } if ($null -eq $invokeScriptResult -or -not ($invokeScriptResult -is [System.Boolean])) { New-InvalidArgumentException -ArgumentName 'TestScript' -Message $script:localizedData.TestScriptDidNotReturnBoolean } Write-Verbose -Message $script:localizedData.TestTargetResourceEndVerboseMessage return $invokeScriptResult } <# .SYNOPSIS Invokes the given script block. The output of the script will be returned unless the script throws an error. If the script throws an error, the ErrorRecord will be returned rather than thrown. .PARAMETER ScriptBlock The script block to invoke. .PARAMETER Credential The credential to run the script under if needed. #> function Invoke-Script { [OutputType([System.Object])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [System.Management.Automation.ScriptBlock] $ScriptBlock, [Parameter()] [ValidateNotNull()] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Credential ) $scriptResult = $null try { Write-Verbose -Message ($script:localizedData.ExecutingScriptMessage -f $ScriptBlock) if ($null -ne $Credential) { $scriptResult = Invoke-Command -ScriptBlock $ScriptBlock -Credential $Credential -ComputerName . } else { $scriptResult = & $ScriptBlock } } catch { # Surfacing the error thrown by the execution of the script $scriptResult = $_ } return $scriptResult } |