PowerShell: Register AWS EC2 instances in AWS R53

UPDATE: #PowerShell: Register AWS EC2 instances in Amazon Route 53 (new way)

Suppose you have a variable $lab:

$lab = @{id='ami-7300091a'; name='1.dc.mylab.com'; type='m1.small'; maxbid='0.02'; CNAME='ec2-54-000-117-7.compute-1.amazonaws.com'},
@{id='ami-49000e20'; name='1.sql.mylab.com'; type='cc1.4xlarge'; maxbid='0.09'; CNAME='ec2-184-73-000-182.compute-1.amazonaws.com'}

Let’s update AWS R53 entries by using instances CNAME:

$zoneId = 'ZB00X5FI00YBB'

foreach($computer in $lab){
  "[$($computer.name)]`t[R53] update... " | Out-Default
  $result = Get-R53ResourceRecordSet -HostedZoneId $zoneId -StartRecordName $computer.name -MaxItems 1
  $rs = $result.ResourceRecordSets[0]
  if($rs.Name -eq "$($computer.name).") {
    "[$($computer.name)]`t[R53] entry found" | Out-Default
    "[$($computer.name)]`t[R53] delete entry" | Out-Default
    $action = (new-object Amazon.Route53.Model.Change).WithAction('DELETE').WithResourceRecordSet($rs)
    Edit-R53ResourceRecordSet -HostedZoneId $zoneId -ChangeBatch_Changes $action | Out-Null
  } else { "[$($computer.name)]`t[R53] entry not found (returned entry is for $($rs.Name))" | Out-Default }
  "[$($computer.name)]`t[R53] create entry" | Out-Default
  $record = (new-object Amazon.Route53.Model.ResourceRecord).WithValue($computer.CNAME)
  $rs = (new-object Amazon.Route53.Model.ResourceRecordSet).WithName($computer.name).WithType('CNAME').WithTTL('10').WithResourceRecords($record)
  $action = (new-object Amazon.Route53.Model.Change).WithAction('CREATE').WithResourceRecordSet($rs)
  Edit-R53ResourceRecordSet -HostedZoneId $zoneId -ChangeBatch_Changes $action | Out-Null
}