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  1. import datetime
  2. import boto3
  3. import logging
  4. import re
  5.  
  6. logger = logging.getLogger()
  7. logger.setLevel(logging.DEBUG)
  8.  
  9. backup_instances = ['i-e7700c54', 'i-096887d5319d0415b']
  10.  
  11.  
  12. def handler(event, context):
  13.     for instance in backup_instances:
  14.         cleanup(instance)
  15.  
  16.  
  17. def cleanup(instance_id):
  18.     ec = boto3.client('ec2')
  19.     response = ec.describe_instance_attribute(
  20.         Attribute='blockDeviceMapping',
  21.         InstanceId=instance_id
  22.     )
  23.     logger.debug('Describe Instance: %s', response)
  24.  
  25.     volume_filters = [
  26.         {'Name': 'attachment.instance-id', 'Values': [instance_id]}
  27.     ]
  28.     volumes = ec.describe_volumes(Filters=volume_filters)['Volumes']
  29.     volume_id = ''
  30.     volume_size = ''
  31.     logger.debug('Volumes: %s', volumes)
  32.     for volume in volumes:
  33.         if not volume_id or not volume_size or volume['Size'] > volume_size:
  34.             volume_id = volume['VolumeId']
  35.             volume_size = volume['Size']
  36.  
  37.     # filter snapshots by volume id
  38.     filters = [
  39.         {'Name': 'volume-id', 'Values': [volume_id]}
  40.     ]
  41.     # retrieve snapshots belonging to owner by id
  42.     account_ids = ['585826603973']
  43.     snapshots = ec.describe_snapshots(OwnerIds=account_ids, Filters=filters)['Snapshots']
  44.  
  45.     today = datetime.datetime.today().strftime('%Y-%m-%d')
  46.     today_date = datetime.datetime.strptime(today, '%Y-%m-%d')
  47.     date_regex = '\d{4}[-]\d{2}[-]\d{2}'
  48.     count = 0
  49.  
  50.     # for each snapshot, compare to today's date. If older than 5 days, delete it
  51.     for snap in snapshots:
  52.         snap_time = re.search(date_regex, str(snap['StartTime'])).group(0)
  53.         logger.info('Snapshot: %s\nDatestamp: %s', snap['SnapshotId'], snap_time)
  54.         snap_date = datetime.datetime.strptime(snap_time, '%Y-%m-%d')
  55.         delta = today_date - snap_date
  56.         logger.info('Delta: %s', delta)
  57.  
  58.         if delta > datetime.timedelta(days=4):
  59.             logger.info('Older than 5 days, deleting snapshot: %s', snap['SnapshotId'])
  60.             ec.delete_snapshot(SnapshotId=snap['SnapshotId'])
  61.             count += 1
  62.     logger.info('%s snapshot(s) deleted', count)
  63.  
Runtime error #stdin #stdout #stderr 0.02s 28640KB
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Standard input is empty
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Standard output is empty
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Traceback (most recent call last):
  File "./prog.py", line 2, in <module>
ImportError: No module named 'boto3'
https://ideone.com/WF5L6f
language:
Python 3 (python  3.9.5)
created:
7 years ago
visibility:
public

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