Set-AzVMSize.ps1

#Requires -Version 5.0
#Requires -Modules Az.Compute

<#
    .SYNOPSIS
        Sets virtual machine size
    
    .DESCRIPTION  
        
    .NOTES
        This PowerShell script was developed and optimized for ScriptRunner. The use of the scripts requires ScriptRunner. 
        The customer or user is authorized to copy the script from the repository and use them in ScriptRunner. 
        The terms of use for ScriptRunner do not apply to this script. In particular, ScriptRunner Software GmbH assumes no liability for the function, 
        the use and the consequences of the use of this freely available script.
        PowerShell is a product of Microsoft Corporation. ScriptRunner is a product of ScriptRunner Software GmbH.
        © ScriptRunner Software GmbH

    .COMPONENT
        Requires Module Az.Compute
        Requires Library script AzureAzLibrary.ps1

    .LINK
        https://github.com/scriptrunner/ActionPacks/blob/master/Azure/Compute  

    .Parameter Name
        [sr-en] Specifies the name of the virtual machine
        [sr-de] Name der virtuellen Maschine

    .Parameter Size
        [sr-en] Specifies the new size of the virtual machine
        [sr-de] Neue Größe der virtuellen Maschine

    .Parameter ResourceGroupName
        [sr-en] Specifies the name of the resource group of the virtual machine
        [sr-de] Name der resource group die die virtuelle Maschine enthält
#>

param( 
    [Parameter(Mandatory = $true)]
    [string]$ResourceGroupName,
    [Parameter(Mandatory = $true)]
    [string]$Name,
    [Parameter(Mandatory = $true)]
    [ValidateSet('Standard_DS1_v2','Standard_DS2_v2','Standard_DS3_v2','Standard_DS4_v2','Standard_DS5_v2')]
    [string]$Size
)

Import-Module Az.Compute

try{
    $vm = Get-AzVM -ResourceGroupName $ResourceGroupName -Name $Name -ErrorAction Stop
    $vm.HardwareProfile.VmSize = $Size

    Stop-AzVM -ResourceGroupName $ResourceGroupName -Name $Name -Force -ErrorAction Stop
    Update-AzVM -VM $vm -ResourceGroupName $ResourceGroupName -ErrorAction Stop
    Start-AzVM -ResourceGroupName $ResourceGroupName -Name $Name -ErrorAction Stop

    $ret = Get-AzVMSize -ResourceGroupName $ResourceGroupName -VMName $Name -ErrorAction Stop

    if($SRXEnv) {
        $SRXEnv.ResultMessage = $ret 
    }
    else{
        Write-Output $ret
    }
}
catch{
    throw
}
finally{
}