Warning

This document is for an old release of Galaxy. You can alternatively view this page in the latest release if it exists or view the top of the latest release's documentation.

Source code for galaxy.util.streamball

"""
A simple wrapper for writing tarballs as a stream.
"""
from __future__ import absolute_import

import logging
import os
import tarfile

from galaxy.exceptions import ObjectNotFound

log = logging.getLogger(__name__)


[docs]class StreamBall(object):
[docs] def __init__(self, mode, members=None): self.members = members if members is None: self.members = [] self.mode = mode self.wsgi_status = None self.wsgi_headeritems = None
[docs] def add(self, file, relpath, check_file=False): if check_file and len(file) > 0: if not os.path.isfile(file): raise ObjectNotFound else: self.members.append((file, relpath)) else: self.members.append((file, relpath))
[docs] def stream(self, environ, start_response): response_write = start_response(self.wsgi_status, self.wsgi_headeritems) class tarfileobj: def write(self, *args, **kwargs): response_write(*args, **kwargs) tf = tarfile.open(mode=self.mode, fileobj=tarfileobj()) for (file, rel) in self.members: tf.add(file, arcname=rel) tf.close() return []
[docs]class ZipBall(object):
[docs] def __init__(self, tmpf, tmpd): self._tmpf = tmpf self._tmpd = tmpd
[docs] def stream(self, environ, start_response): response_write = start_response(self.wsgi_status, self.wsgi_headeritems) tmpfh = open(self._tmpf) response_write(tmpfh.read()) tmpfh.close() try: os.unlink(self._tmpf) os.rmdir(self._tmpd) except OSError: log.exception("Unable to remove temporary library download archive and directory") return []