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#!/usr/bin/env python3
import boto3
import click
import re
import shutil
import sys
@click.command(help = 'List S3 versions, optionally download all versions as well')
@click.option('--bucket', required = True, help = 'The s3 bucket to scan')
@click.option('--prefix', default = '', help = 'Prefix of files to scan')
@click.option('--download', default = False, is_flag = True, help = 'Download all versions (prefix filenames with ISO datetime of edit and version), paths not preserved')
def s3versions(bucket, prefix, download):
'''List all versions of files in s3.'''
s3 = boto3.resource('s3')
bucket = s3.Bucket(bucket)
versions = bucket.object_versions.filter(Prefix = prefix)
for version in versions:
object = version.get()
path = version.object_key
last_modified = object.get('LastModified')
version_id = object.get('VersionId')
print(path, last_modified, version_id, sep = '\t')
if download:
filename = path.rsplit('/')[-1]
with open(f'{last_modified}-{version_id}-{filename}', 'wb') as fout:
shutil.copyfileobj(object.get('Body'), fout)
if __name__ == '__main__':