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#!/usr/bin/env python
#
# Seed.py: this file is part of the GRS suite
# Copyright (C) 2015 Anthony G. Basile
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import glob
import os
import re
import shutil
import urllib.request
from grs.Constants import CONST
from grs.Execute import Execute
from grs.Rotator import Rotator
class Seed(Rotator):
""" Download a stage tarball and unpack it into an empty system portage configroot. """
def __init__(
self, stage_uri, tmpdir=CONST.TMPDIR, portage_configroot=CONST.PORTAGE_CONFIGROOT,
package=CONST.PACKAGE, logfile=CONST.LOGFILE
):
self.stage_uri = stage_uri
self.portage_configroot = portage_configroot
self.package = package
filename = os.path.basename(stage_uri)
self.filepath = os.path.join(tmpdir, filename)
self.logfile = logfile
def seed(self):
# Rotate the old portage_configroot and package out of the way
for directory in [self.portage_configroot, self.package]:
self.full_rotate(directory)
os.makedirs(directory, mode=0o755, exist_ok=False)
# Download a stage tarball if we don't have one
if not os.path.isfile(self.filepath):
request = urllib.request.urlopen(self.stage_uri)
with open(self.filepath, 'wb') as f:
shutil.copyfileobj(request, f)
# Because python's tarfile sucks
cmd = 'tar --xattrs -xf %s -C %s' % (self.filepath, self.portage_configroot)
Execute(cmd, timeout=120, logfile=self.logfile)
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