Public/deploy/Helpers/DscHelpers/Clear-DscCache.ps1
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<#
The MIT License (MIT) Copyright (c) 2015 Objectivity Bespoke Software Specialists Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. #> function Clear-DscCache { <# .SYNOPSIS Clears local DSC cache. Based on https://github.com/PowerShellOrg/DSC/blob/master/Tooling/dscbuild/Clear-CachedDscResource.ps1. .DESCRIPTION When you change a DSC resource, it can happen that it is not updated due to caching in WMI Provider Host Process. This cmdlet stops the process which clears the cache. .PARAMETER ConnectionParams Connection parameters created by [[New-ConnectionParameters]] function. If not specified, will run locally. .LINK http://social.technet.microsoft.com/Forums/windowsserver/en-US/58352ed2-869a-45be-ad61-9019bb975cc7/desired-state-configuration-manager-caching-custom-resource-scripts?forum=winserverpowershell .EXAMPLE Clear-DscCache #> [CmdletBinding()] [OutputType([object[]])] param( [Parameter(Mandatory=$false)] [object] $ConnectionParams ) $scriptBlock = { $DscNamespace = 'root/Microsoft/Windows/DesiredStateConfiguration' Get-Process -Name WmiPrvSE -erroraction SilentlyContinue | Stop-Process -force Get-WmiObject -Namespace $DscNamespace -List -Class tmp* | ForEach-Object { (Get-wmiobject -Namespace $DscNamespace -list -Class $_.Name).psbase.delete() } } if (!$ConnectionParams) { Write-Log -Info 'Clearing DSC cache locally' Invoke-Command -ScriptBlock $scriptBlock } else { Write-Log -Info "Clearing DSC cache on '$($ConnectionParams.NodesAsString)'" $params = $ConnectionParams.PSSessionParams Invoke-Command @params -ScriptBlock $scriptBlock } } |