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# SPDX-License-Identifier: LGPL-2.1-only
#
# Container class for the libcgroup functional tests
#
# Copyright (c) 2019-2021 Oracle and/or its affiliates.
# Author: Tom Hromatka <tom.hromatka@oracle.com>
#
from run import Run, RunError
from queue import Queue
import threading as tp
from log import Log
import consts
import time
import os
class Container(object):
def __init__(self, name, stop_timeout=None, arch=None, cfg_path=None,
distro=None, release=None):
self.name = name
self.privileged = True
if stop_timeout:
self.stop_timeout = stop_timeout
else:
self.stop_timeout = consts.DEFAULT_CONTAINER_STOP_TIMEOUT
if arch:
self.arch = arch
else:
self.arch = consts.DEFAULT_CONTAINER_ARCH
if distro:
self.distro = distro
else:
self.distro = consts.DEFAULT_CONTAINER_DISTRO
if release:
self.release = release
else:
self.release = consts.DEFAULT_CONTAINER_RELEASE
ftest_dir = os.path.dirname(os.path.abspath(__file__))
tests_dir = os.path.dirname(ftest_dir)
# save off the path to the libcgroup source code
self.libcg_dir = os.path.dirname(tests_dir)
def __str__(self):
out_str = 'Container {}'.format(self.name)
out_str += '\n\tdistro = {}'.format(self.distro)
out_str += '\n\trelease = {}'.format(self.release)
out_str += '\n\tarch = {}'.format(self.arch)
out_str += '\n\tstop_timeout = {}\n'.format(self.stop_timeout)
return out_str
# configure the container to meet our needs
def config(self):
# map our UID and GID to the same UID/GID in the container
cmd = (
'printf "uid {} 1000\ngid {} 1000" | sudo lxc config set '
'{} raw.idmap -'
''.format(os.getuid(), os.getgid(), self.name)
)
Run.run(cmd, shell_bool=True)
# add the libcgroup root directory (where we did the build) into
# the container
cmd2 = list()
if self.privileged:
cmd2.append('sudo')
cmd2.append('lxc')
cmd2.append('config')
cmd2.append('device')
cmd2.append('add')
cmd2.append(self.name)
cmd2.append('libcgsrc') # arbitrary name of device
cmd2.append('disk')
# to appease gcov, mount the libcgroup source at the same path as we
# built it. This can be worked around someday by using
# GCOV_PREFIX_STRIP, but that was more difficult to setup than just
# doing this initially
cmd2.append('source={}'.format(self.libcg_dir))
cmd2.append('path={}'.format(self.libcg_dir))
return Run.run(cmd2)
def _init_container(self, q):
cmd = list()
if self.privileged:
cmd.append('sudo')
cmd.append('lxc')
cmd.append('init')
cmd.append('{}:{}'.format(self.distro, self.release))
cmd.append(self.name)
try:
Run.run(cmd)
q.put(True)
except Exception: # noqa: E722
q.put(False)
except BaseException: # noqa: E722
q.put(False)
def create(self):
# Github Actions sometimes has timeout issues with the LXC sockets.
# Try this command multiple times in an attempt to work around this
# limitation
queue = Queue()
sleep_time = 5
ret = False
for i in range(5):
thread = tp.Thread(target=self._init_container, args=(queue, ))
thread.start()
time_cnt = 0
while thread.is_alive():
time.sleep(sleep_time)
time_cnt += sleep_time
Log.log_debug('Waiting... {}'.format(time_cnt))
ret = queue.get()
if ret:
break
else:
try:
self.delete()
except RunError:
pass
thread.join()
if not ret:
raise ContainerError('Failed to create the container')
def delete(self):
cmd = list()
if self.privileged:
cmd.append('sudo')
cmd.append('lxc')
cmd.append('delete')
cmd.append(self.name)
return Run.run(cmd)
def run(self, cntnr_cmd, shell_bool=False):
cmd = list()
if self.privileged:
cmd.append('sudo')
cmd.append('lxc')
cmd.append('exec')
cmd.append(self.name)
cmd.append('--')
# concatenate the lxc exec command with the command to be run
# inside the container
if isinstance(cntnr_cmd, str):
cmd.append(cntnr_cmd)
elif isinstance(cntnr_cmd, list):
cmd = cmd + cntnr_cmd
else:
raise ContainerError('Unsupported command type')
return Run.run(cmd, shell_bool=shell_bool)
def start(self):
cmd = list()
if self.privileged:
cmd.append('sudo')
cmd.append('lxc')
cmd.append('start')
cmd.append(self.name)
return Run.run(cmd)
def stop(self, force=True):
cmd = list()
if self.privileged:
cmd.append('sudo')
cmd.append('lxc')
cmd.append('stop')
cmd.append(self.name)
if force:
cmd.append('-f')
else:
cmd.append('--timeout')
cmd.append(str(self.stop_timeout))
return Run.run(cmd)
class ContainerError(Exception):
def __init__(self, message):
super(ContainerError, self).__init__(message)
def __str__(self):
out_str = 'ContainerError:\n\tmessage = {}'.format(self.message)
return out_str
# vim: set et ts=4 sw=4:
|
