S3 lifecycle rule / ExpiredObjectDeleteMarker': True failed on chalice application

0

Hi Inside a chalice application, I have created a class for handling S3 bucket. I add a method to add a default lifecycle rule which will delete all objects after 1 day. (quite useful for a dev environment)

def put_default_lifecycle_rule(self, id_name='default_lifecycle_rule'):

   try:
        s3 = boto3.resource('s3')
        bucket_lifecycle_configuration = s3.BucketLifecycleConfiguration(self._bucketname)
        response = bucket_lifecycle_configuration.put(
            LifecycleConfiguration={
                'Rules': [
                    {
                        'Expiration': {
                            'Days': 1
                        },
                        'ID': id_name,
                        'Status': 'Enabled',
                        'Filter': {'Prefix': ''},
                        'NoncurrentVersionExpiration': {
                            'NoncurrentDays': 1
                        },
                        'AbortIncompleteMultipartUpload': {
                            'DaysAfterInitiation': 1
                        }
                    }
                ]
            }
        )
    except Exception as e:
        logging.error(e)
        raise e
    return response

When I add "ExpiredObjectDeleteMarker': True" in expiration block, I got an XML error (malformed). Official documentation says to put this in this block. Any idea ? Thanks guys

asked 9 months ago311 views
2 Answers
1
Accepted Answer

Hi there!
You cannot add the ExpiredObjectDeleteMarker configuration within the same expiration rule where you specify a Days or Date value. Try having two separate rules for the LifeCycleConfiguration. Something like this:

response = bucket_lifecycle_configuration.put(
            LifecycleConfiguration={
                'Rules': [
                    {
                        'Expiration': {
                            'Days': 1
                        },
                        'ID': 'Rule01',
                        'Status': 'Enabled',
                        'Filter': {'Prefix': ''},
                        'NoncurrentVersionExpiration': {
                            'NoncurrentDays': 1
                        },
                        'AbortIncompleteMultipartUpload': {
                            'DaysAfterInitiation': 1
                        }
                    },
                    {
                        'Expiration': {
                            'ExpiredObjectDeleteMarker': True
                        },
                        'ID': 'Rule02',
                        'Status': 'Enabled',
                        'Filter': {'Prefix': ''}
                    }
                ]
            }
        )
Fabio_L
answered 9 months ago
  • Hi ))) Yes I should have thought about that. This is the solution Thanks Fabio

0

The documentation for S3.BucketLifecycleConfiguration.put() states:

ExpiredObjectDeleteMarker (boolean) --

Indicates whether Amazon S3 will remove a delete marker with no noncurrent versions. If set to true, the delete marker will be expired; if set to false the policy takes no action. This cannot be specified with Days or Date in a Lifecycle Expiration Policy.

-- https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/s3.html#S3.BucketLifecycleConfiguration.put (emphasis mine)

Specifying 'Expiration': { 'Days': 1 } causes current versions to expire after one day.

The 'NoncurrentVersionExpiration': { 'NoncurrentDays': 1 } block specifies that non-current versions are deleted one day after Expiration.

answered 9 months ago
  • Hi thanks for the reply

    Yes sure this is the code I wrote. The question is about the expired object delete marker)))

    I have read the doc before writing the code.

    With the AWS console I can set up the lifecycle rule for expired object delete markers but not on code...

    When some buckets can't be delete with the console, the only solution is to put a lifecycle rule for deleting

    • current versions
    • non current versions
    • expired object delete markers

    according to AWS documentation...

    So the issue remains

    Thanks for the help

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