DscResources/JHP_ScomDataWarehouseSetting.psm1
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enum Ensure { Present Absent } # Support for DSC v3, for what it's worth class Reason { [DscProperty()] [string] $Code [DscProperty()] [string] $Phrase } function Get-Resource { [OutputType([Hashtable])] [CmdletBinding()] param ( [Parameter(Mandatory)] [ValidateSet('yes')] [System.String] $IsSingleInstance, [Parameter(Mandatory)] [string] $DatabaseName, [Parameter(Mandatory)] [string] $ServerName ) $reasonList = @() $setting = Get-ScomDataWarehouseSetting if ($setting.DataWarehouseServerName -ne $ServerName) { $reasonList += @{ Code = 'ScomDataWarehouseSetting:ScomDataWarehouseSetting:WrongServerName' Phrase = "Approval setting is $($setting.DataWarehouseServerName) but should be $ServerName" } } if ($setting.DataWarehouseDatabaseName -ne $DatabaseName) { $reasonList += @{ Code = 'ScomDataWarehouseSetting:ScomDataWarehouseSetting:WrongDatabaseName' Phrase = "Approval setting is $($setting.DataWarehouseDatabaseName) but should be $DatabaseName" } } return @{ IsSingleInstance = $IsSingleInstance DatabaseName = $setting.DataWarehouseDatabaseName ServerName = $setting.DataWarehouseServerName Reasons = $reasonList } } function Test-Resource { [OutputType([bool])] [CmdletBinding()] param ( [Parameter(Mandatory)] [ValidateSet('yes')] [System.String] $IsSingleInstance, [Parameter(Mandatory)] [string] $DatabaseName, [Parameter(Mandatory)] [string] $ServerName ) return ($(Get-Resource @PSBoundParameters).Reasons.Count -eq 0) } function Set-Resource { [CmdletBinding()] param ( [Parameter(Mandatory)] [ValidateSet('yes')] [System.String] $IsSingleInstance, [Parameter(Mandatory)] [string] $DatabaseName, [Parameter(Mandatory)] [string] $ServerName ) $parameters = @{ ErrorAction = 'Stop' DatabaseName = $DatabaseName ServerName = $ServerName } Set-ScomDataWarehouseSetting @parameters } [DscResource()] class ScomDataWarehouseSetting { [DscProperty(Key)] [ValidateSet('yes')] [string] $IsSingleInstance [DscProperty(Mandatory)] [string] $DatabaseName [DscProperty(Mandatory)] [string] $ServerName [DscProperty(NotConfigurable)] [Reason[]] $Reasons [ScomDataWarehouseSetting] Get() { $parameter = Sync-Parameter -Command (Get-Command Get-Resource) -Parameters $this.GetConfigurableDscProperties() return (Get-Resource @parameter) } [void] Set() { $parameter = Sync-Parameter -Command (Get-Command Set-Resource) -Parameters $this.GetConfigurableDscProperties() Set-Resource @parameter } [bool] Test() { $parameter = Sync-Parameter -Command (Get-Command Test-Resource) -Parameters $this.GetConfigurableDscProperties() return (Test-Resource @parameter) } [Hashtable] GetConfigurableDscProperties() { # This method returns a hashtable of properties with two special workarounds # The hashtable will not include any properties marked as "NotConfigurable" # Any properties with a ValidateSet of "True","False" will beconverted to Boolean type # The intent is to simplify splatting to functions # Source: https://gist.github.com/mgreenegit/e3a9b4e136fc2d510cf87e20390daa44 $DscProperties = @{} foreach ($property in [ScomDataWarehouseSetting].GetProperties().Name) { # Checks if "NotConfigurable" attribute is set $notConfigurable = [ScomDataWarehouseSetting].GetProperty($property).GetCustomAttributes($false).Where({ $_ -is [System.Management.Automation.DscPropertyAttribute] }).NotConfigurable if (!$notConfigurable) { $value = $this.$property # Gets the list of valid values from the ValidateSet attribute $validateSet = [ScomDataWarehouseSetting].GetProperty($property).GetCustomAttributes($false).Where({ $_ -is [System.Management.Automation.ValidateSetAttribute] }).ValidValues if ($validateSet) { # Workaround for boolean types if ($null -eq (Compare-Object @('True', 'False') $validateSet)) { $value = [System.Convert]::ToBoolean($this.$property) } } # Add property to new $DscProperties.add($property, $value) } } return $DscProperties } } |