MultiVersion Support for Powershell Scripts

[Talom]

I just wanted to share my short code snippet to use the same Powershell Script for different Veeam Versions.
This was my solution to migrate all my old scripts for Veeam11 without dropping the support for older versions.

Code: Select all

$module = "Veeam.Backup.PowerShell"
    $snapin = "VeeamPSSnapIn"
    if (Get-Module | Where-Object {$_.Name -eq $module}) {
        write-host "Module $module is already imported."
    }
    else {

        # If module is not imported, but available on disk then import
        if (Get-Module -ListAvailable | Where-Object {$_.Name -eq $module}) {
            Import-Module $module
        }
        else {

           if ((Get-PSSnapin | ? { $_.Name -eq $snapin }) -eq $null) {
                Add-PSSnapin $snapin 
            }
            
        }
    }

[chris.arceneaux]

Thanks for sharing! I took a similar route in my scripts that need to support v11 and older versions:

Code: Select all

# Accounts for switch from PSSnapin to Module in v11
if (-Not (Get-Module -ListAvailable -Name Veeam.Backup.PowerShell)){
    Add-PSSnapin -PassThru VeeamPSSnapIn -ErrorAction Stop | Out-Null
}

Note that you shouldn't have to import the Veeam PowerShell module in your scripts anymore as modules auto-import anytime you use a cmdlet specified within the module. That said, importing the module manually is perfectly valid as well.