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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
"""Helper to create tarballs."""
import copy
import glob
import os
import tarfile
from condprof import progress
from condprof.util import TASK_CLUSTER
def _tarinfo2mem(tar, tarinfo):
metadata = copy.copy(tarinfo)
try:
data = tar.extractfile(tarinfo)
if data is not None:
data = data.read()
except Exception:
data = None
return metadata, data
class Archiver:
def __init__(self, scenario, profile_dir, archives_dir):
self.profile_dir = profile_dir
self.archives_dir = archives_dir
self.scenario = scenario
def _strftime(self, date, template="-%Y-%m-%d-hp.tar.gz"):
return date.strftime(self.scenario + template)
def _get_archive_path(self, when):
archive = self._strftime(when)
return os.path.join(self.archives_dir, archive), archive
def create_archive(self, when, iterator=None):
def _filter(tarinfo):
name = tarinfo.name
if name.endswith((".dmp", ".extra")) and "minidumps" in name:
# Inore crash files such as:
# - minidumps/5b2d4a13-54e6-5ebb-9a6f-913a3451e56a.dmp
# - minidumps/5b2d4a13-54e6-5ebb-9a6f-913a3451e56a.extra
# ... because they can cause permafailing tests (bug 2007615).
#
# We are excluding them here instead of removing the crash dump
# from the filesystem before archival, in case anyone wants to
# inspect these files.
return None
return tarinfo
if iterator is None:
def _files(tar):
files = glob.glob(os.path.join(self.profile_dir, "*"))
yield len(files)
for filename in files:
try:
tar.add(filename, os.path.basename(filename), filter=_filter)
yield filename
except FileNotFoundError: # NOQA
# locks and such
pass
iterator = _files
if isinstance(when, str):
archive = when
else:
archive, __ = self._get_archive_path(when)
with tarfile.open(archive, "w:gz", dereference=True) as tar:
it = iterator(tar)
size = next(it)
with progress.Bar(expected_size=size) as bar:
for filename in it:
if not TASK_CLUSTER:
bar.show(bar.last_progress + 1)
return archive
def _read_tar(self, filename):
files = {}
with tarfile.open(filename, "r:gz") as tar:
for tarinfo in tar:
files[tarinfo.name] = _tarinfo2mem(tar, tarinfo)
return files
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