DSCResources/MSFT_xExchMailboxDatabaseCopy/MSFT_xExchMailboxDatabaseCopy.psm1
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function Get-TargetResource { [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSDSCUseVerboseMessageInDSCResource", "")] [CmdletBinding()] [OutputType([System.Collections.Hashtable])] param ( [Parameter(Mandatory = $true)] [System.String] $Identity, [Parameter(Mandatory = $true)] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Credential, [Parameter(Mandatory = $true)] [System.String] $MailboxServer, [Parameter()] [System.Boolean] $AllowServiceRestart = $false, [Parameter()] [System.UInt32] $ActivationPreference, [Parameter()] [System.String] $DomainController, [Parameter()] [System.String] $ReplayLagTime, [Parameter()] [System.Boolean] $SeedingPostponed, [Parameter()] [System.String] $TruncationLagTime, [Parameter()] [System.String] $AdServerSettingsPreferredServer ) LogFunctionEntry -Parameters @{"Identity" = $Identity} -VerbosePreference $VerbosePreference #Establish remote Powershell session GetRemoteExchangeSession -Credential $Credential ` -CommandsToLoad 'Get-MailboxDatabase','*DatabaseCopy*','Set-AdServerSettings' ` -VerbosePreference $VerbosePreference if ($PSBoundParameters.ContainsKey('AdServerSettingsPreferredServer') -and ![System.String]::IsNullOrEmpty($AdServerSettingsPreferredServer)) { Set-ADServerSettings -PreferredServer "$($AdServerSettingsPreferredServer)" } $db = GetMailboxDatabase @PSBoundParameters $serverHasCopy = $false #First figure out if this server has a copy foreach ($copy in $db.DatabaseCopies) { if ($copy.HostServerName -like $MailboxServer) { $serverHasCopy = $true break } } #If we have a copy, parse out the values if ($serverHasCopy -eq $true) { foreach ($pref in $db.ActivationPreference) { if ($pref.Key.Name -like $MailboxServer) { $ActivationPreference = $pref.Value break } } foreach ($rlt in $db.ReplayLagTimes) { if ($rlt.Key.Name -like $MailboxServer) { $ReplayLagTime = $rlt.Value break } } foreach ($tlt in $db.TruncationLagTimes) { if ($tlt.Key.Name -like $MailboxServer) { $TruncationLagTime = $tlt.Value break } } $returnValue = @{ Identity = $Identity MailboxServer = $MailboxServer ActivationPreference = $ActivationPreference ReplayLagTime = $ReplayLagTime TruncationLagTime = $TruncationLagTime } } $returnValue } function Set-TargetResource { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [System.String] $Identity, [Parameter(Mandatory = $true)] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Credential, [Parameter(Mandatory = $true)] [System.String] $MailboxServer, [Parameter()] [System.Boolean] $AllowServiceRestart = $false, [Parameter()] [System.UInt32] $ActivationPreference, [Parameter()] [System.String] $DomainController, [Parameter()] [System.String] $ReplayLagTime, [Parameter()] [System.Boolean] $SeedingPostponed, [Parameter()] [System.String] $TruncationLagTime, [Parameter()] [System.String] $AdServerSettingsPreferredServer ) LogFunctionEntry -Parameters @{"Identity" = $Identity} -VerbosePreference $VerbosePreference #Don't need to establish remote session, as Get-TargetResource will do it $copy = Get-TargetResource @PSBoundParameters $copyCount = 0 $existingDb = GetMailboxDatabase @PSBoundParameters -ErrorAction SilentlyContinue if ($null -ne $existingDb) { $copyCount = $existingDb.DatabaseCopies.Count } if ($null -eq $copy) #We need to add a new copy { Write-Verbose "A copy of database '$($Identity)' does not exist on server '$($MailboxServer)'. Adding." #Increment the copy count to what it will be when this copy is added $copyCount++ #Create a copy of the original parameters $originalPSBoundParameters = @{} + $PSBoundParameters RemoveParameters -PSBoundParametersIn $PSBoundParameters ` -ParamsToRemove 'Credential','AllowServiceRestart','AdServerSettingsPreferredServer' #Only send in ActivationPreference if it is less than or equal to the future copy count after adding this copy if ($PSBoundParameters.ContainsKey('ActivationPreference') -and $ActivationPreference -gt $copyCount) { Write-Warning "Desired activation preference '$($ActivationPreference)' is higher than the future copy count '$($copyCount)'. Skipping setting ActivationPreference at this point." RemoveParameters -PSBoundParametersIn $PSBoundParameters -ParamsToRemove 'ActivationPreference' } #If SeedingPostponed was passed, turn it into a switch parameter instead of a bool if ($PSBoundParameters.ContainsKey('SeedingPostponed')) { if ($SeedingPostponed -eq $true) { $PSBoundParameters.Remove('SeedingPostponed') $PSBoundParameters.Add('SeedingPostponed', $null) } else { $PSBoundParameters.Remove('SeedingPostponed') } } #Create the database NotePreviousError Add-MailboxDatabaseCopy @PSBoundParameters ThrowIfNewErrorsEncountered -CmdletBeingRun 'Add-MailboxDatabaseCopy' -VerbosePreference $VerbosePreference #Increment the copy count, as if we made it here, we didn't fail $copyCount++ #Add original props back AddParameters -PSBoundParametersIn $PSBoundParameters -ParamsToAdd $originalPSBoundParameters #See if we can find the new copy $copy = Get-TargetResource @PSBoundParameters if ($null -ne $copy) { #Again, add original props back AddParameters -PSBoundParametersIn $PSBoundParameters -ParamsToAdd $originalPSBoundParameters if ($AllowServiceRestart -eq $true) { Write-Verbose -Message 'Restarting Information Store' Restart-Service MSExchangeIS } else { Write-Warning -Message 'The configuration will not take effect until MSExchangeIS is manually restarted.' } } else { throw 'Failed to find database copy after running Add-MailboxDatabaseCopy' } } else #($null -ne $copy) #Need to set props on copy { AddParameters -PSBoundParametersIn $PSBoundParameters -ParamsToAdd @{'Identity' = "$($Identity)\$($MailboxServer)"} RemoveParameters -PSBoundParametersIn $PSBoundParameters ` -ParamsToRemove 'Credential','AllowServiceRestart','MailboxServer','AdServerSettingsPreferredServer','SeedingPostponed' if ($PSBoundParameters.ContainsKey('ActivationPreference') -and $ActivationPreference -gt $copyCount) { Write-Warning "Desired activation preference '$($ActivationPreference)' is higher than current copy count '$($copyCount)'. Skipping setting ActivationPreference at this point." RemoveParameters -PSBoundParametersIn $PSBoundParameters -ParamsToRemove 'ActivationPreference' } Set-MailboxDatabaseCopy @PSBoundParameters } } function Test-TargetResource { [Diagnostics.CodeAnalysis.SuppressMessageAttribute("PSDSCUseVerboseMessageInDSCResource", "")] [CmdletBinding()] [OutputType([System.Boolean])] param ( [Parameter(Mandatory = $true)] [System.String] $Identity, [Parameter(Mandatory = $true)] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Credential, [Parameter(Mandatory = $true)] [System.String] $MailboxServer, [Parameter()] [System.Boolean] $AllowServiceRestart = $false, [Parameter()] [System.UInt32] $ActivationPreference, [Parameter()] [System.String] $DomainController, [Parameter()] [System.String] $ReplayLagTime, [Parameter()] [System.Boolean] $SeedingPostponed, [Parameter()] [System.String] $TruncationLagTime, [Parameter()] [System.String] $AdServerSettingsPreferredServer ) LogFunctionEntry -Parameters @{"Identity" = $Identity} -VerbosePreference $VerbosePreference #Don't need to establish remote session, as Get-TargetResource will do it $copy = Get-TargetResource @PSBoundParameters if ($null -eq $copy) { return $false } else { if (!(VerifySetting -Name 'ActivationPreference' -Type 'Int' -ExpectedValue $ActivationPreference -ActualValue $copy.ActivationPreference -PSBoundParametersIn $PSBoundParameters -VerbosePreference $VerbosePreference)) { return $false } if (!(VerifySetting -Name 'ReplayLagTime' -Type 'Timespan' -ExpectedValue $ReplayLagTime -ActualValue $copy.ReplayLagTime -PSBoundParametersIn $PSBoundParameters -VerbosePreference $VerbosePreference)) { return $false } if (!(VerifySetting -Name 'TruncationLagTime' -Type 'Timespan' -ExpectedValue $TruncationLagTime -ActualValue $copy.TruncationLagTime -PSBoundParametersIn $PSBoundParameters -VerbosePreference $VerbosePreference)) { return $false } } return $true } function GetMailboxDatabase { [CmdletBinding()] param ( [Parameter(Mandatory = $true)] [System.String] $Identity, [Parameter(Mandatory = $true)] [System.Management.Automation.PSCredential] [System.Management.Automation.Credential()] $Credential, [Parameter(Mandatory = $true)] [System.String] $MailboxServer, [Parameter()] [System.Boolean] $AllowServiceRestart = $false, [Parameter()] [System.UInt32] $ActivationPreference, [Parameter()] [System.String] $DomainController, [Parameter()] [System.String] $ReplayLagTime, [Parameter()] [System.Boolean] $SeedingPostponed, [Parameter()] [System.String] $TruncationLagTime, [Parameter()] [System.String] $AdServerSettingsPreferredServer ) RemoveParameters -PSBoundParametersIn $PSBoundParameters -ParamsToKeep 'Identity','DomainController' return (Get-MailboxDatabase @PSBoundParameters -Status -ErrorAction SilentlyContinue) } Export-ModuleMember -Function *-TargetResource |