Public/Invoke-DSC.ps1
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function Invoke-Dsc { <# .SYNOPSIS Invokes Dsc resources .DESCRIPTION Passes PSCustomObjects to Invoke-DscResource by invoking the Test method and if the Test method fails invokes the Set method. .PARAMETER Resource Specifies the PSCustomObject to be passed to Invoke-DscResource .PARAMETER Retry Specifies the amount of times to rety when the Local Configuration Manager State is busy. .PARAMETER Delay Specifies the amount of seconds between retries when the Local Configuration Manager State is busy. .EXAMPLE $r = ConvertTo-Dsc -Path 'c:\Config\NewFile.json' Invoke-Dsc -Resource $r .EXAMPLE $r = ConvertTo-Dsc -Path 'c:\Config\NewFile.json' Invoke-Dsc -Resource $r -Retry 5 -Dealy 60 .NOTES Wraps around the native Invoke-DscResource cmdlet and invokes them as native Dsc would by running the test method first and if the test method fails it invokes the set method. #> [CmdletBinding(SupportsShouldProcess = $True)] Param ( [Parameter(Mandatory = $true, ValueFromPipelineByPropertyName = $true, Position = 0)] [object[]]$Resource, [int]$Retry = 5, [int]$Delay = 60 ) Begin { $retryCount = 0 if ((Get-DscLocalConfigurationManager).LCMState -eq 'Busy') { do { $retryCount ++ Write-Warning "Local Configuration Manager is in progress and must return before Invoke-DscResource can be invoked. Will retry in [$Delay] seconds...Retry [$retryCount/$Retry]" Start-Sleep -Seconds $Delay $LCMstate = (Get-DscLocalConfigurationManager).LCMState if ($retryCount -eq $Retry) { throw "Local Configuration Manager is in progress after [$Retry] retries. Use -Force option if available or cancel the current operation." } } until ($retryCount -eq $Retry -or $LCMstate -eq 'Idle') } } Process { foreach ($r in $Resource) { $splat = @{ Name = $r.dscResourceName Property = $r.Property ErrorAction = 'SilentlyContinue' } if ($null -ne $r.ModuleVersion) { $splat.Add('ModuleName', @{ModuleName = $($r.ModuleName); ModuleVersion = $($r.ModuleVersion)}) } else { if ($r.ModuleName -eq 'PSDesiredStateConfiguration' -and $r.dscResourceName -eq 'File') { $splat.Add('ModuleName', $r.ModuleName) } else { $latestVersion = Get-LatestModuleVersion -Name $r.ModuleName $splat.Add('ModuleName', @{ModuleName = $($r.ModuleName); ModuleVersion = $latestVersion}) } } Write-Output "[Start Test] [[$($r.dscResourceName)]$($r.ResourceName)]" $testResults = Invoke-DscResource @splat -Method Test -ErrorVariable TestError -Verbose:$false if ($PSCmdlet.ShouldProcess("Invoking Set Method")) { if ($TestError) { Write-Error ("Failed to Invoke $($r.resourceName)" + ($TestError[0].Exception.Message)) } elseif (($testResults.InDesiredState) -ne $true) { Write-Output "[Start Set] [[$($r.dscResourceName)]$($r.ResourceName)]" Invoke-DscResource @splat -Method Set -ErrorVariable SetError -Verbose:$false } if ($SetError) { Write-Error "Failed to invoke [$($r.resourceName)] ($SetError[0].Exception.Message)" } } } } End { } } |