UndeployAzure

UndeployAzure.ps1

#requires -version 2.0
param (
	[parameter(Mandatory=$true)] [string]$AzureServiceName,
	[parameter(Mandatory=$true)] [string]$AzureDeploymentSlot,
	[parameter(Mandatory=$true)] [string]$AzureSubscriptionId,
	[parameter(Mandatory=$true)] [string]$AzureCertificateThumbprint)

$ErrorActionPreference = "Stop"

if ((Get-PSSnapin -Registered -Name AzureManagementCmdletsSnapIn -ErrorAction SilentlyContinue) -eq $null)
{
	throw "AzureManagementCmdletsSnapIn missing. Install them from Https://www.cerebrata.com/Products/AzureManagementCmdlets/Download.aspx"
}

Add-PSSnapin AzureManagementCmdletsSnapIn -ErrorAction SilentlyContinue

function CheckIfDeploymentIsDeleted
{
	$triesElapsed = 0
	$maximumRetries = 10
	$waitInterval = [System.TimeSpan]::FromSeconds(30)
	Do
	{
		$triesElapsed+=1
		[System.Threading.Thread]::Sleep($waitInterval)
		Write-Verbose "Checking if deployment is deleted, current retry is $triesElapsed/$maximumRetries"
		$deploymentInstance = Get-Deployment `
			-ServiceName $AzureServiceName `
			-Slot $AzureDeploymentSlot `
			-SubscriptionId $AzureSubscriptionId `
			-Certificate $certificate `
			-ErrorAction SilentlyContinue
		
		if($deploymentInstance -eq $null)
		{
			Write-Verbose "Deployment is deleted"
			break
		}
		
		if($triesElapsed -ge $maximumRetries)
		{
			throw "Checking if deployment deleted has been running longer than 5 minutes, it seems the delployment is not deleting, giving up this step."
		}
	}
	While($triesElapsed -le $maximumRetries)
}

Write-Verbose "Retrieving management certificate"
$certificate = Get-ChildItem -Path "cert:\CurrentUser\My\$AzureCertificateThumbprint" -ErrorAction SilentlyContinue
if ($certificate -eq $null)
{
	throw "Couldn't find the Azure management certificate in the store"
}
if (-not $certificate.HasPrivateKey)
{
	throw "The private key for the Azure management certificate is not available in the certificate store"
}

$currentDeploymentInstance = Get-Deployment `
			-ServiceName $AzureServiceName `
			-Slot $AzureDeploymentSlot `
			-SubscriptionId $AzureSubscriptionId `
			-Certificate $certificate `
			-ErrorAction SilentlyContinue
		
if($currentDeploymentInstance -eq $null)
{
	Write-Verbose "Deployment is already deleted"
}
else
{
	Write-Verbose "Deleting Deployment"
	Remove-Deployment `
		-ServiceName $AzureServiceName `
		-Slot $AzureDeploymentSlot `
		-SubscriptionId $AzureSubscriptionId `
		-Certificate $certificate `
		-ErrorAction SilentlyContinue
	Write-Verbose "Sent delete deployment intructions asynchronously, will check back later to see if it is deleted"
	
	CheckIfDeploymentIsDeleted
}