Export Performance Improvement - Addresses #5615

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 # UNRELEASED
 
+* Export Performance Improvements
+  * Implements the changes described in [#5615](https://github.com/microsoft/Microsoft365DSC/issues/5615)
 * AADAuthenticationRequirement
   * Filtered guests from the export, to prevent errors during export
     FIXES [#5625](https://github.com/microsoft/Microsoft365DSC/issues/5625)

Modules/Microsoft365DSC/DSCResources/MSFT_AADAdministrativeUnit/MSFT_AADAdministrativeUnit.psm1

@@ -84,64 +84,58 @@ function Get-TargetResource
     )
     try
     {
-        $ConnectionMode = New-M365DSCConnection -Workload 'MicrosoftGraph' `
-            -InboundParameters $PSBoundParameters
-    }
-    catch
-    {
-        Write-Verbose -Message ($_)
-    }
-
-    #Ensure the proper dependencies are installed in the current environment.
-    Confirm-M365DSCDependencies
-
-    #region Telemetry
-    $ResourceName = $MyInvocation.MyCommand.ModuleName.Replace('MSFT_', '')
-    $CommandName = $MyInvocation.MyCommand
-    $data = Format-M365DSCTelemetryParameters -ResourceName $ResourceName `
-        -CommandName $CommandName `
-        -Parameters $PSBoundParameters
-    Add-M365DSCTelemetryEvent -Data $data
-    #endregion
-
-    $nullResult = $PSBoundParameters
-    $nullResult.Ensure = 'Absent'
-    try
-    {
-        $getValue = $null
-        #region resource generator code
-        if (-not [string]::IsNullOrEmpty($Id))
+        if (-not $Script:exportedInstance)
         {
-            if ($null -ne $Script:exportedInstances -and $Script:ExportMode)
+            try
             {
-                $getValue = $Script:exportedInstances | Where-Object -FilterScript { $_.Id -eq $Id }
+                $ConnectionMode = New-M365DSCConnection -Workload 'MicrosoftGraph' `
+                    -InboundParameters $PSBoundParameters
             }
-            else
+            catch
+            {
+                Write-Verbose -Message ($_)
+            }
+
+            #Ensure the proper dependencies are installed in the current environment.
+            Confirm-M365DSCDependencies
+
+            #region Telemetry
+            $ResourceName = $MyInvocation.MyCommand.ModuleName.Replace('MSFT_', '')
+            $CommandName = $MyInvocation.MyCommand
+            $data = Format-M365DSCTelemetryParameters -ResourceName $ResourceName `
+                -CommandName $CommandName `
+                -Parameters $PSBoundParameters
+            Add-M365DSCTelemetryEvent -Data $data
+            #endregion
+
+            $nullResult = $PSBoundParameters
+            $nullResult.Ensure = 'Absent'
+
+            $getValue = $null
+            #region resource generator code
+            if (-not [string]::IsNullOrEmpty($Id))
             {
                 $getValue = Get-MgBetaDirectoryAdministrativeUnit -AdministrativeUnitId $Id -ErrorAction SilentlyContinue
             }
-        }
 
-        if ($null -eq $getValue -and -not [string]::IsNullOrEmpty($DisplayName))
-        {
-            Write-Verbose -Message "Could not find an Azure AD Administrative Unit by Id, trying by DisplayName {$DisplayName}"
-            if (-Not [string]::IsNullOrEmpty($DisplayName))
+            if ($null -eq $getValue -and -not [string]::IsNullOrEmpty($DisplayName))
             {
-                if ($null -ne $Script:exportedInstances -and $Script:ExportMode)
-                {
-                    $getValue = $Script:exportedInstances | Where-Object -FilterScript { $_.DisplayName -eq $DisplayName }
-                }
-                else
+                Write-Verbose -Message "Could not find an Azure AD Administrative Unit by Id, trying by DisplayName {$DisplayName}"
+                if (-Not [string]::IsNullOrEmpty($DisplayName))
                 {
                     $getValue = Get-MgBetaDirectoryAdministrativeUnit -Filter "DisplayName eq '$DisplayName'" -ErrorAction Stop
                 }
             }
+            #endregion
+            if ($null -eq $getValue)
+            {
+                Write-Verbose -Message "Could not find an Azure AD Administrative Unit with DisplayName {$DisplayName}"
+                return $nullResult
+            }
         }
-        #endregion
-        if ($null -eq $getValue)
+        else
         {
-            Write-Verbose -Message "Could not find an Azure AD Administrative Unit with DisplayName {$DisplayName}"
-            return $nullResult
+            $getValue = $Script:exportedInstance
         }
         $Id = $getValue.Id
         Write-Verbose -Message "An Azure AD Administrative Unit with Id {$Id} and DisplayName {$DisplayName} was found."
@@ -1099,6 +1093,7 @@ function Export-TargetResource
                 AccessTokens          = $AccessTokens
             }
 
+            $Script:exportedInstance = $config
             $Results = Get-TargetResource @Params
 
             if ($null -ne $Results.ScopedRoleMembers)