Backup MIM Config (Synchronisation and Service/Portal) and create diffs/history with git

Backup-MIMConfig.ps1

#Requires -Version 5
[CmdletBinding()]

Param (
    [Parameter(Mandatory=$true)]
    [ValidateNotNullOrEmpty()]
    [string]
    $MIMConfigPath
,
    [Parameter()]
    [ValidateNotNullOrEmpty()]
    [string]
    $MIMServiceURI = "http://localhost:5725"
,
    [Parameter()]
    [switch]
    $SyncConfig
,
    [Parameter()]
    [switch]
    $PortalConfig
)

Begin {
    $ErrorActionPreference = "Stop"

    New-Alias -Name Git -Value "git.exe"

    if($PortalConfig){
        Import-Module -Name (Join-Path -Path $MIMConfigPath -ChildPath "Modules\FIMAutomation\FIMAutomation.psd1")
        Import-Module -Name (Join-Path -Path $MIMConfigPath -ChildPath "Modules\LithnetRMA\*\LithnetRMA.psd1")
    }

    if($SyncCOnfig){
        Import-Module -Name "LithnetMIISAutomation"
    }

    $ConfigFolders = @(
        "MIMPortal"
        "MIMService"
        "MIMService\PolicyConfig"
        "MIMService\PortalConfig"
        "MIMService\SchemaConfig"
        "MIMSync"
        "MIMSync\Extensions"
        "MIMSync\MA"
        "MIMSync\Metaverse"
    )

    if (-not (Test-Path -PathType Container -Path $MIMConfigPath)) {
        New-Item -ItemType Directory -Path $MIMConfigPath | Out-Null
    }

    # Clean out and re-create the config folders, so that git can see if items have been removed
    foreach ($Folder in $ConfigFolders) {
        $FolderPath = Join-Path -Path $MIMConfigPath -ChildPath $Folder
        if (Test-Path -PathType Container -Path $FolderPath) {
            Remove-Item -Recurse -Path $FolderPath
        }

        New-Item -ItemType Directory -Path $FolderPath | Out-Null
    }

    Set-Location -Path $MIMConfigPath
}

Process {
    ##
    ## MIM Service Config
    ##
    
    if($PortalConfig){

        $MIMServiceConfig = "$((Get-ItemProperty -Path HKLM:\SYSTEM\CurrentControlSet\Services\FIMService -Name ImagePath).ImagePath.Trim('"')).config"
        Copy-Item -Recurse -Path $MIMServiceConfig -Destination (Join-Path -Path $MIMConfigPath -ChildPath MIMService)

        Remove-Item -Path (Join-Path -Path $MIMConfigPath -ChildPath MIMService\PolicyConfig\*)
        $PolicyConfig = Export-FIMConfig -Uri $MIMServiceURI -PolicyConfig -AllLocales
        $PolicyConfig | ConvertFrom-FIMResource -File (Join-Path -Path $MIMConfigPath -ChildPath MIMService\PolicyConfig.xml)
        $PolicyConfig | ForEach-Object -Process {
            $UUID = $PSItem.ResourceManagementObject.ObjectIdentifier -replace "^urn:uuid:",""
            $PSItem | ConvertFrom-FIMResource -File (Join-Path -Path $MIMConfigPath -ChildPath MIMService\PolicyConfig\$UUID.xml)
        }

        Remove-Item -Path (Join-Path -Path $MIMConfigPath -ChildPath MIMService\PortalConfig\*)
        $PortalConfig = Export-FIMConfig -Uri $MIMServiceURI -PortalConfig -AllLocales
        $PortalConfig | ConvertFrom-FIMResource -File (Join-Path -Path $MIMConfigPath -ChildPath MIMService\PortalConfig.xml)
        $PortalConfig | ForEach-Object -Process {
            $UUID = $PSItem.ResourceManagementObject.ObjectIdentifier -replace "^urn:uuid:",""
            $PSItem | ConvertFrom-FIMResource -File (Join-Path -Path $MIMConfigPath -ChildPath MIMService\PortalConfig\$UUID.xml)
        }

        Remove-Item -Path (Join-Path -Path $MIMConfigPath -ChildPath MIMService\SchemaConfig\*)
        # Include '/SynchronizationFilter' as per https://technet.microsoft.com/en-us/library/ff400267(v=ws.10).aspx
        $SchemaConfig = Export-FIMConfig -Uri $MIMServiceURI -SchemaConfig -CustomConfig "/SynchronizationFilter" -AllLocales
        $SchemaConfig | ConvertFrom-FIMResource -File (Join-Path -Path $MIMConfigPath -ChildPath MIMService\SchemaConfig.xml)
        $SchemaConfig | ForEach-Object -Process {
            $UUID = $PSItem.ResourceManagementObject.ObjectIdentifier -replace "^urn:uuid:",""
            $PSItem | ConvertFrom-FIMResource -File (Join-Path -Path $MIMConfigPath -ChildPath MIMService\SchemaConfig\$UUID.xml)
        }
    }

    ##
    ## MIM Synchronisation Config
    ##

    if($SyncConfig){
        $MIMSyncInstallPath = (Get-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Services\FIMSynchronizationService\Parameters' -Name Path).Path

        Remove-Item -Path (Join-Path -Path $MIMConfigPath -ChildPath MIMSync\MA\*)
        Remove-Item -Path (Join-Path -Path $MIMConfigPath -ChildPath MIMSync\Metaverse\*)
        Remove-Item -Path (Join-Path -Path $MIMConfigPath -ChildPath MIMSync\Extensions\*) -Recurse

        Copy-Item -Recurse -Path (Join-Path -Path $MIMSyncInstallPath -ChildPath "Extensions\*") -Destination (Join-Path -Path $MIMConfigPath -ChildPath MIMSync\Extensions)

        Export-MetaverseConfiguration -Path (Join-Path -Path $MIMConfigPath -ChildPath MIMSync\Metaverse)

        foreach ($MA in (Get-ManagementAgent)) {
            Export-ManagementAgent -MA $MA -File (Join-Path -Path $MIMConfigPath -ChildPath "MIMSync\MA\$($MA.Name).xml")
        }
    }

    ## 
    ## Regex replace export-date entries in files
    ##

    gci -Path $MIMConfigPath -Recurse -Filter *.XML | ForEach {
     (Get-Content $_.FullName | ForEach  { $_ -replace "export-date='\d{4}-\d{2}-\d{2}\s\d{2}:\d{2}:\d{2}\.\d{3}'", "export-date=''" }) |
     Set-Content $_.FullName
    }

    ##
    ## Commit any changes to the local Git repository
    ##

    Git status
    Git add --all
    Git commit --message="MIM Config Backup $(Get-Date -Format u)"
    Git push

    # Do some Git cleanup and optimise the storage (put them into zipped 'pack' files)
    Git gc
}

End {
}