s3-tar 0.1.12

Tar (and compress) files in s3

s3-tar

Create a tar/tar.gz/tar.bz2 file from many s3 files and stream back into s3.

Install

pip install s3-tar

Usage

Set the environment variable S3_ENDPOINT_URL to use a custom s3 host (minio/etc...)

This will use very little RAM. As it downloads files, it streams up the tar'd pieces as it goes.
You can use more or less ram by playing with the options cache_size & part_size_multiplier.

Command Line

To see all command line options run:
s3-tar -h

Import

from s3_tar import S3Tar

# Init the job
job = S3Tar(
    'YOUR_BUCKET_NAME',
    'FILE_TO_SAVE_TO.tar',  # Use `tar.gz` or `tar.bz2` to enable compression
    # target_bucket=None,  # Default: source bucket. Can be used to save the archive into a different bucket
    # min_file_size='50MB',  # Default: None. The min size to make each tar file [B,KB,MB,GB,TB]. If set, a number will be added to each file name
    # save_metadata=False,  # If True, and the file has metadata, save a file with the same name using the suffix of `.metadata.json`
    # remove_keys=False,  # If True, will delete s3 files after the tar is created
  
    # ADVANCED USAGE
    # allow_dups=False,  # When False, will raise ValueError if a file will overwrite another in the tar file, set to True to ignore
    # cache_size=5,  # Default 5. Number of files to hold in memory to be processed
    # s3_max_retries=4,  # Default is 4. This value is passed into boto3.client's s3 botocore config as the `max_attempts`
    # part_size_multiplier=10,  # is multiplied by 5 MB to find how large each part that gets upload should be
    # session=boto3.session.Session(),  # For custom aws session
)
# Add files, can call multiple times to add files from other directories
job.add_files(
    'FOLDER_IN_S3/',
    # folder='',  # If a folder is set, then all files from this directory will be added into that folder in the tar file
    # preserve_paths=False,  # If True, it will use the dir paths relative to the input path inside the tar file
)
# Add a single file at a time
job.add_file(
    'some/file_key.json',
    # folder='',  # If a folder is set, then the file will be added into that folder in the tar file
)
# Start the tar'ing job after files have been added
job.tar()