Create tar from S3 bucket files using boto3

tar-creation-s3-bucket.py

import boto3
import tarfile
import os.path
s3Client = boto3.client('s3')
s3object = boto3.resource('s3')

def lambda_handler(event, context):
    
    agtBucket = "angularbuildbucket"
    key=""
    tar = tarfile.open('/tmp/example.tar', 'w')
    source_dir="/tmp/"
    for fname in get_matching_s3_keys(bucket=agtBucket, prefix=key, suffix='.js'):
        print(fname)
        file_obj = s3object.Object(agtBucket, fname)
        #file_content = file_obj.get()['Body'].read()
        #tar.add(file_content)
        s3object.Bucket(agtBucket).download_file(fname, '/tmp/'+fname)
        tar.add(source_dir, arcname=os.path.basename(source_dir))
    tar.close()
    s3object.meta.client.upload_file(source_dir+"example.tar", agtBucket, 'example.tar')
    
    
    
def get_matching_s3_keys(bucket, prefix='', suffix=''):
    """
    Generate the keys in an S3 bucket.

    :param bucket: Name of the S3 bucket.
    :param prefix: Only fetch keys that start with this prefix (optional).
    :param suffix: Only fetch keys that end with this suffix (optional).
    """
    kwargs = {'Bucket': bucket, 'Prefix': prefix}
    while True:
        resp = s3Client.list_objects_v2(**kwargs)
        for obj in resp['Contents']:
            key = obj['Key']
            if key.endswith(suffix):
                yield key

        try:
            kwargs['ContinuationToken'] = resp['NextContinuationToken']
        except KeyError:
            break