cleanup-pr-environments.yml

# DESCRIPTION: 	
# Removes resource groups used in PRs.
# The Exclude variable can be used to preserve specific resource groups. It is a comma seperated list of the full resource group names. 
# The DeleteRecent variable can be used to delete recent runs. Otherwise only resource groups with no deployments in the last week will be deleted.

variables:
- template: build-variables.yml
- template: pr-variables.yml

stages:
- stage: CleanupRGs
  displayName: 'Cleanup Resource Groups'
  jobs:
  - job: DeleteResourceGroup
    displayName: 'Delete resource group'
    pool:
      name: '$(SharedLinuxPool)'
      vmImage: '$(LinuxVmImage)'
    steps:
    - task: AzurePowerShell@5
      displayName: 'Delete resource group'
      inputs:
        azureSubscription: $(ConnectedServiceName)
        azurePowerShellVersion: latestVersion
        ScriptType: InlineScript
        Inline: |
          Write-Host "Starting"

          Write-Host ${env:Exclude}
          try {
            $excludeList = ${env:Exclude}.Split(',').Trim()
          }
          catch {
          }

          Write-Host "Getting resource groups"
          $resourceGroups = Get-AzResourceGroup -Name "$(resourceGroupRoot)*" -Location "$(ResourceGroupRegion)" | Where ResourceGroupName -NotIn $excludeList 

          Write-Host "Finding cutoff time"
          $cutoffTime = Get-Date
          If (${env:DeleteRecent} -ne $true)
          {
            $cutoffTime = $cutoffTime.AddDays(-7)
          }

          ForEach ($group in $resourceGroups)
          {
            Write-Host "Deleting $($group.ResourceGroupName)"
            $deploymentTimes = Get-AzResourceGroupDeployment -ResourceGroupName $group.ResourceGroupName | Select Timestamp | Where Timestamp -lt $cutoffTime
            If ($deploymentTimes.Count -gt 0)
            {
              Remove-AzResourceGroup -Name $group.ResourceGroupName -Verbose -Force
            }
          }