76 lines
2.2 KiB
Python
76 lines
2.2 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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"""Helper to create tarballs.
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"""
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import copy
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import glob
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import os
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import tarfile
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from condprof import progress
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from condprof.util import TASK_CLUSTER
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def _tarinfo2mem(tar, tarinfo):
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metadata = copy.copy(tarinfo)
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try:
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data = tar.extractfile(tarinfo)
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if data is not None:
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data = data.read()
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except Exception:
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data = None
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return metadata, data
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class Archiver:
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def __init__(self, scenario, profile_dir, archives_dir):
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self.profile_dir = profile_dir
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self.archives_dir = archives_dir
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self.scenario = scenario
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def _strftime(self, date, template="-%Y-%m-%d-hp.tar.gz"):
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return date.strftime(self.scenario + template)
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def _get_archive_path(self, when):
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archive = self._strftime(when)
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return os.path.join(self.archives_dir, archive), archive
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def create_archive(self, when, iterator=None):
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if iterator is None:
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def _files(tar):
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files = glob.glob(os.path.join(self.profile_dir, "*"))
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yield len(files)
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for filename in files:
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try:
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tar.add(filename, os.path.basename(filename))
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yield filename
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except FileNotFoundError: # NOQA
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# locks and such
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pass
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iterator = _files
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if isinstance(when, str):
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archive = when
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else:
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archive, __ = self._get_archive_path(when)
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with tarfile.open(archive, "w:gz", dereference=True) as tar:
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it = iterator(tar)
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size = next(it)
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with progress.Bar(expected_size=size) as bar:
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for filename in it:
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if not TASK_CLUSTER:
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bar.show(bar.last_progress + 1)
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return archive
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def _read_tar(self, filename):
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files = {}
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with tarfile.open(filename, "r:gz") as tar:
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for tarinfo in tar:
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files[tarinfo.name] = _tarinfo2mem(tar, tarinfo)
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return files
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