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# Copyright 2017 Lars Wirzenius
#
# 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/>.
#
# =*= License: GPL-3+ =*=
import logging
import os
import vmdb
class UnpackRootFSPlugin(vmdb.Plugin):
def enable(self):
self.app.step_runners.add(UnpackCacheStepRunner())
class UnpackCacheStepRunner(vmdb.StepRunnerInterface):
def get_key_spec(self):
return {"unpack-rootfs": str}
def run(self, values, settings, state):
fs_tag = values["unpack-rootfs"]
rootdir = state.tags.get_builder_mount_point(fs_tag)
logging.debug(f"settings: {settings}")
tar_path = settings["rootfs-tarball"]
logging.debug(f"tar_path: {tar_path!r}")
if not tar_path:
raise Exception("--rootfs-tarball MUST be set")
if os.path.exists(tar_path):
vmdb.runcmd(["tar", "-C", rootdir, "-xf", tar_path, "--numeric-owner"])
state.rootfs_unpacked = True
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