DSCResources/MSFT_ADReplicationSiteLink/MSFT_ADReplicationSiteLink.psm1
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$script:resourceModulePath = Split-Path -Path (Split-Path -Path $PSScriptRoot -Parent) -Parent $script:modulesFolderPath = Join-Path -Path $script:resourceModulePath -ChildPath 'Modules' $script:localizationModulePath = Join-Path -Path $script:modulesFolderPath -ChildPath 'ActiveDirectoryDsc.Common' Import-Module -Name (Join-Path -Path $script:localizationModulePath -ChildPath 'ActiveDirectoryDsc.Common.psm1') $script:localizedData = Get-LocalizedData -ResourceName 'MSFT_ADReplicationSiteLink' <# .SYNOPSIS Gets the current configuration on an AD Replication Site Link. .PARAMETER Name Specifies the name of the AD Replication Site Link. .PARAMETER SitesExcluded Specifies the list of sites to remove from a site link. #> function Get-TargetResource { [CmdletBinding()] [OutputType([System.Collections.Hashtable])] param ( [Parameter(Mandatory = $true)] [System.String] $Name, [Parameter()] [System.String[]] $SitesExcluded ) try { $siteLink = Get-ADReplicationSiteLink -Identity $Name -Properties 'Description' } catch [Microsoft.ActiveDirectory.Management.ADIdentityNotFoundException] { Write-Verbose -Message ($script:localizedData.SiteLinkNotFound -f $Name) $returnValue = @{ Name = $Name Cost = $null Description = $null ReplicationFrequencyInMinutes = $null SitesIncluded = $null SitesExcluded = $SitesExcluded Ensure = 'Absent' } $siteLink = $null } catch { $errorMessage = $script:localizedData.GetSiteLinkUnexpectedError -f $Name New-InvalidOperationException -Message $errorMessage -ErrorRecord $_ } if ($null -ne $siteLink) { if ($siteLink.SitesIncluded) { $siteCommonNames = @() foreach ($siteDN in $siteLink.SitesIncluded) { $siteCommonNames += Resolve-SiteLinkName -SiteName $siteDn } } $sitesExcludedEvaluated = $SitesExcluded | Where-Object -FilterScript { $_ -notin $siteCommonNames } $returnValue = @{ Name = $Name Cost = $siteLink.Cost Description = $siteLink.Description ReplicationFrequencyInMinutes = $siteLink.ReplicationFrequencyInMinutes SitesIncluded = $siteCommonNames SitesExcluded = $sitesExcludedEvaluated Ensure = 'Present' } } return $returnValue } <# .SYNOPSIS Sets the desired configuration on an AD Replication Site Link. .PARAMETER Name Specifies the name of the AD Replication Site Link. .PARAMETER Cost Specifies the cost to be placed on the site link. .PARAMETER Description Specifies a description of the object. .PARAMETER ReplicationFrequencyInMinutes Specifies the frequency (in minutes) for which replication will occur where this site link is in use between sites. .PARAMETER SitesIncluded Specifies the list of sites included in the site link. .PARAMETER SitesExcluded Specifies the list of sites to remove from a site link. .PARAMETER Ensure Specifies if the site link is created or deleted. #> function Set-TargetResource { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [System.String] $Name, [Parameter()] [System.Int32] $Cost, [Parameter()] [System.String] $Description, [Parameter()] [System.Int32] $ReplicationFrequencyInMinutes, [Parameter()] [System.String[]] $SitesIncluded, [Parameter()] [System.String[]] $SitesExcluded, [Parameter()] [ValidateSet('Present', 'Absent')] [System.String] $Ensure = 'Present' ) if ($Ensure -eq 'Present') { # Modify parameters for splatting to New-ADReplicationSiteLink. $desiredParameters = $PSBoundParameters $desiredParameters.Remove('Ensure') $desiredParameters.Remove('SitesExcluded') $currentADSiteLink = Get-TargetResource -Name $Name <# Since Set and New have different parameters we have to test if the site link exists to determine what cmdlet we need to use. #> if ( $currentADSiteLink.Ensure -eq 'Absent' ) { Write-Verbose -Message ($script:localizedData.NewSiteLink -f $Name) New-ADReplicationSiteLink @desiredParameters } else { # now we have to determine if we need to add or remove sites from SitesIncluded. $setParameters = @{ Identity = $Name } # build the SitesIncluded hashtable. $sitesIncludedParameters = @{ } if ($SitesExcluded) { Write-Verbose -Message ($script:localizedData.RemovingSites -f $($SiteExcluded -join ', '), $Name) <# Wrapped in $() as we were getting some weird results without it, results were not being added into Hashtable as strings. #> $sitesIncludedParameters.Add('Remove', $($SitesExcluded)) } if ($SitesIncluded) { Write-Verbose -Message ($script:localizedData.AddingSites -f $($SitesIncluded -join ', '), $Name) <# Wrapped in $() as we were getting some weird results without it, results were not being added into Hashtable as strings. #> $sitesIncludedParameters.Add('Add', $($SitesIncluded)) } if ($null -ne $($sitesIncludedParameters.Keys)) { $setParameters.Add('SitesIncluded', $sitesIncludedParameters) } # Add the rest of the parameters. foreach ($parameter in $PSBoundParameters.Keys) { if ($parameter -notmatch 'SitesIncluded|SitesExcluded|Name|Ensure') { $setParameters.Add($parameter, $PSBoundParameters[$parameter]) } } Set-ADReplicationSiteLink @setParameters } } else { Write-Verbose -Message ($script:localizedData.RemoveSiteLink -f $Name) Remove-ADReplicationSiteLink -Identity $Name } } <# .SYNOPSIS Tests if the AD Replication Site Link is in a desired state. .PARAMETER Name Specifies the name of the AD Replication Site Link. .PARAMETER Cost Specifies the cost to be placed on the site link. .PARAMETER Description Specifies a description of the object. .PARAMETER ReplicationFrequencyInMinutes Specifies the frequency (in minutes) for which replication will occur where this site link is in use between sites. .PARAMETER SitesIncluded Specifies the list of sites included in the site link. .PARAMETER SitesExcluded Specifies the list of sites to remove from a site link. .PARAMETER Ensure Specifies if the site link is created or deleted. #> function Test-TargetResource { [CmdletBinding()] [OutputType([System.Boolean])] param ( [Parameter(Mandatory = $true)] [System.String] $Name, [Parameter()] [System.Int32] $Cost, [Parameter()] [System.String] $Description, [Parameter()] [System.Int32] $ReplicationFrequencyInMinutes, [Parameter()] [System.String[]] $SitesIncluded, [Parameter()] [System.String[]] $SitesExcluded, [Parameter()] [ValidateSet('Present', 'Absent')] [System.String] $Ensure = 'Present' ) $isCompliant = $true $currentSiteLink = Get-TargetResource -Name $Name # Test for Ensure. if ($Ensure -ne $currentSiteLink.Ensure) { return $false } # Test for SitesIncluded. foreach ($desiredIncludedSite in $SitesIncluded) { if ($desiredIncludedSite -notin $currentSiteLink.SitesIncluded) { Write-Verbose -Message ($script:localizedData.SiteNotFound -f $desiredIncludedSite, $($currentSiteLink.SitesIncluded -join ', ')) $isCompliant = $false } } # Test for SitesExcluded. foreach ($desiredExcludedSite in $SitesExcluded) { if ($desiredExcludedSite -in $currentSiteLink.SitesIncluded) { Write-Verbose -Message ($script:localizedData.SiteFoundInExcluded -f $desiredExcludedSite, $($currentSiteLink.SitesIncluded -join ', ')) $isCompliant = $false } } # Test for Description|ReplicationFrequencyInMinutes|Cost. foreach ($parameter in $PSBoundParameters.Keys) { if ($parameter -match 'Description|ReplicationFrequencyInMinutes|Cost') { if ($PSBoundParameters[$parameter] -ne $currentSiteLink[$parameter]) { Write-Verbose -Message ($script:localizedData.PropertyNotInDesiredState -f $parameter, $($currentSiteLink[$parameter]), $($PSBoundParameters[$parameter])) $isCompliant = $false } } } return $isCompliant } <# .SYNOPSIS Resolves the AD replication site link distinguished names to short names .PARAMETER SiteName Specifies the distinguished name of a AD replication site link .EXAMPLE PS C:\> Resolve-SiteLinkName -SiteName 'CN=Site1,CN=Sites,CN=Configuration,DC=contoso,DC=com' Site1 #> function Resolve-SiteLinkName { [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSUseCmdletCorrectly", "")] [OutputType([System.String])] [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [System.String] $SiteName ) $adSite = Get-ADReplicationSite -Identity $SiteName return $adSite.Name } Export-ModuleMember -Function *-TargetResource |