/usr/bin/adt-buildvm-ubuntu-cloud is in autopkgtest 3.20.4.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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#
# adt-buildvm-ubuntu-cloud is part of autopkgtest
# autopkgtest is a tool for testing Debian binary packages
#
# autopkgtest is Copyright (C) 2006-2014 Canonical Ltd.
#
# Build a suitable autopkgtest VM from the Ubuntu cloud images:
# https://cloud-images.ubuntu.com/
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
# See the file CREDITS for a full list of credits information (often
# installed as /usr/share/doc/autopkgtest/CREDITS).
import argparse
import tempfile
import sys
import subprocess
import shutil
import atexit
import urllib.request
import os
import time
import socket
import re
try:
our_base = os.environ['AUTOPKGTEST_BASE'] + '/lib'
except KeyError:
our_base = '/usr/share/autopkgtest/python'
sys.path.insert(1, our_base)
import VirtSubproc
workdir = tempfile.mkdtemp(prefix='adt-buildvm-ubuntu-cloud')
atexit.register(shutil.rmtree, workdir)
def get_default_release():
try:
import distro_info
try:
return distro_info.UbuntuDistroInfo().devel()
except distro_info.DistroDataOutdated:
# right after a release there is no devel series, fall back to
# stable
sys.stderr.write('WARNING: cannot determine development release, '
'falling back to latest stable\n')
return distro_info.UbuntuDistroInfo().stable()
except ImportError:
sys.stderr.write('WARNING: python-distro-info not installed, falling '
'back to determining default release from currently '
'installed release\n')
if subprocess.call(['which', 'lsb_release'], stdout=subprocess.PIPE) == 0:
return subprocess.check_output(['lsb_release', '-cs'],
universal_newlines=True).strip()
def parse_args():
'''Parse CLI args'''
# auto-detect apt-cacher-ng
try:
socket.create_connection(('localhost', 3142), 0.5)
default_proxy = 'http://10.0.2.2:3142'
except socket.error:
default_proxy = ''
parser = argparse.ArgumentParser(fromfile_prefix_chars='@')
default_arch = subprocess.check_output(['dpkg', '--print-architecture'],
universal_newlines=True).strip()
uname_to_qemu_suffix = {'i[3456]86$': 'i386'}
arch = os.uname()[4]
for pattern, suffix in uname_to_qemu_suffix.items():
if re.match(pattern, arch):
qemu_cmd_default = 'qemu-system-' + suffix
break
else:
qemu_cmd_default = 'qemu-system-' + arch
parser.add_argument('-a', '--arch', default=default_arch,
help='Ubuntu architecture (default: %(default)s)')
parser.add_argument('-r', '--release', metavar='CODENAME',
default=get_default_release(),
help='Ubuntu release code name (default: %(default)s)')
parser.add_argument('-m', '--mirror', metavar='URL',
default='http://archive.ubuntu.com/ubuntu',
help='Use this mirror for apt (default: %(default)s)')
parser.add_argument('-p', '--proxy', metavar='URL', default=default_proxy,
help='Use a proxy for apt; a local apt-cacher-ng '
'gets used automatically (default: %s)' % (
default_proxy or 'none'))
parser.add_argument('-s', '--disk-size', default='20G',
help='grow image by this size (default: %(default)s)')
parser.add_argument('-o', '--output-dir', metavar='DIR', default='.',
help='output directory for generated image (default: '
'current directory)')
parser.add_argument('-q', '--qemu-command',
default=qemu_cmd_default,
help='qemu command (default: %(default)s)')
parser.add_argument('-v', '--verbose', action='store_true', default=False,
help='Show VM guest and cloud-init output')
parser.add_argument('--cloud-image-url', metavar='URL',
default='https://cloud-images.ubuntu.com',
help='cloud images URL (default: %(default)s)')
parser.add_argument('--no-apt-upgrade', action='store_true',
help='Do not run apt-get dist-upgrade')
parser.add_argument('--post-command',
help='Run shell command in VM after setup')
parser.add_argument('--metadata', metavar='METADATA_FILE',
help='Custom metadata file for cloud-init.')
parser.add_argument('--userdata', metavar='USERDATA_FILE',
help='Custom userdata file for cloud-init.')
parser.add_argument('--timeout', metavar='SECONDS', default=3600, type=int,
help='Timeout for cloud-init (default: %(default)i s)')
args = parser.parse_args()
# check our dependencies
if subprocess.call(['which', args.qemu_command], stdout=subprocess.PIPE,
stderr=subprocess.STDOUT) != 0:
sys.stderr.write('ERROR: QEMU command %s not found\n' %
args.qemu_command)
sys.exit(1)
if subprocess.call(['which', 'genisoimage'], stdout=subprocess.PIPE,
stderr=subprocess.STDOUT) != 0:
sys.stderr.write('ERROR: genisoimage not found\n')
sys.exit(1)
if os.path.exists('/dev/kvm') and not os.access('/dev/kvm', os.W_OK):
sys.stderr.write('ERROR: no permission to write /dev/kvm\n')
sys.exit(1)
return args
def download_image(cloud_img_url, release, arch):
diskname = '%s-server-cloudimg-%s-disk1.img' % (release, arch)
image_url = '%s/%s/current/%s' % (cloud_img_url, release, diskname)
local_image = os.path.join(workdir, diskname)
print('Downloading %s...' % image_url)
is_tty = os.isatty(sys.stdout.fileno())
download_image.lastpercent = 0
def report(numblocks, blocksize, totalsize):
cur_bytes = numblocks * blocksize
if totalsize > 0:
percent = int(cur_bytes * 100. / totalsize + .5)
else:
percent = 0
if is_tty:
if percent > download_image.lastpercent:
download_image.lastpercent = percent
sys.stdout.write('\r%.1f/%.1f MB (%i%%) ' % (
cur_bytes / 1000000.,
totalsize / 1000000.,
percent))
sys.stdout.flush()
else:
if percent >= download_image.lastpercent + 10:
download_image.lastpercent = percent
sys.stdout.write('%i%% ' % percent)
sys.stdout.flush()
headers = urllib.request.urlretrieve(image_url, local_image, report)[1]
if headers['content-type'] not in ('application/octet-stream',
'text/plain'):
sys.stderr.write('\nDownload failed!\n')
sys.exit(1)
print('\nDownload successful.')
return local_image
def resize_image(image, size):
print('Resizing image, adding %s...' % size)
subprocess.check_call(['qemu-img', 'resize', image, '+' + size])
DEFAULT_METADATA = 'instance-id: nocloud\nlocal-hostname: autopkgtest\n'
DEFAULT_USERDATA = """#cloud-config
locale: en_US.UTF-8
timezone: %(tz)s
password: ubuntu
chpasswd: { expire: False }
ssh_pwauth: True
manage_etc_hosts: True
apt_proxy: %(proxy)s
apt_mirror: %(mirror)s
runcmd:
- sed -i 's/deb-systemd-invoke/true/' /var/lib/dpkg/info/cloud-init.prerm
- mount -r /dev/vdb /mnt
- env ADT_SETUP_VM_UPGRADE=%(upgr)s ADT_SETUP_VM_POST_COMMAND='%(postcmd)s'
sh /mnt/setup-testbed
- if grep -q 'net.ifnames=0' /proc/cmdline; then ln -s /dev/null /etc/udev/rules.d/80-net-setup-link.rules; update-initramfs -u; fi
- umount /mnt
- (while [ ! -e /var/lib/cloud/instance/boot-finished ]; do sleep 1; done;
apt-get -y purge cloud-init; shutdown -P now) &
"""
def build_seed(mirror, proxy, no_apt_upgrade, metadata_file=None,
userdata_file=None, post_command=None):
print('Building seed image...')
if metadata_file:
metadata = open(metadata_file).read()
else:
metadata = DEFAULT_METADATA
with open(os.path.join(workdir, 'meta-data'), 'w') as f:
f.write(metadata)
upgr = no_apt_upgrade and 'false' or 'true'
if userdata_file:
userdata = open(userdata_file).read()
else:
userdata = DEFAULT_USERDATA % {'proxy': proxy or '', 'mirror': mirror,
'upgr': upgr, 'tz': host_tz(),
'postcmd': post_command or ''}
# preserve proxy from host
for v in ['http_proxy', 'https_proxy', 'no_proxy']:
if v not in os.environ:
continue
val = os.environ[v]
if v != 'no_proxy':
# translate localhost addresses
val = val.replace('localhost', '10.0.2.2').replace(
'127.0.0.1', '10.0.2.2')
userdata += ''' - [ sh, -c, 'echo "%s=%s" >> /etc/environment' ]\n''' \
% (v, val)
with open(os.path.join(workdir, 'user-data'), 'w') as f:
f.write(userdata)
# find setup-testbed, copy it into the VM via the cloud-init seed iso
for script in [os.path.join(os.path.dirname(os.path.abspath(os.path.dirname(__file__))),
'setup-commands', 'setup-testbed'),
'/usr/share/autopkgtest/setup-commands/setup-testbed']:
if os.path.exists(script):
shutil.copy(script, workdir)
break
else:
sys.stderr.write('\nCould not find setup-testbed script\n')
sys.exit(1)
genisoimage = subprocess.Popen(['genisoimage', '-output', 'adt.seed',
'-volid', 'cidata', '-joliet', '-rock',
'-quiet', 'user-data', 'meta-data',
'setup-testbed'],
cwd=workdir)
genisoimage.communicate()
if genisoimage.returncode != 0:
sys.exit(1)
return os.path.join(workdir, 'adt.seed')
def host_tz():
'''Return host timezone.
Defaults to Etc/UTC if it cannot be determined
'''
if os.path.exists('/etc/timezone'):
with open('/etc/timezone', 'rb') as f:
for l in f:
if l.startswith(b'#'):
continue
l = l.strip()
if l:
return l.decode()
return 'Etc/UTC'
def boot_image(image, seed, qemu_command, verbose, timeout):
print('Booting image to run cloud-init...')
tty_sock = os.path.join(workdir, 'ttyS0')
argv = [qemu_command, '-m', '512',
'-nographic',
'-monitor', 'null',
'-net', 'user',
'-net', 'nic,model=virtio',
'-serial', 'unix:%s,server,nowait' % tty_sock,
'-drive', 'file=%s,if=virtio' % image,
'-drive', 'file=%s,if=virtio,readonly' % seed]
if os.path.exists('/dev/kvm'):
argv.append('-enable-kvm')
qemu = subprocess.Popen(argv)
try:
if verbose:
tty = VirtSubproc.get_unix_socket(tty_sock)
# wait for cloud-init to finish and VM to shutdown
with VirtSubproc.timeout(timeout, 'timed out on cloud-init'):
while qemu.poll() is None:
if verbose:
sys.stdout.buffer.raw.write(tty.recv(4096))
else:
time.sleep(1)
finally:
if qemu.poll() is None:
qemu.terminate()
if qemu.wait() != 0:
sys.stderr.write('qemu failed with status %i\n' % qemu.returncode)
sys.exit(1)
def install_image(src, dest):
# We want to atomically update dest, and in case multiple instances are
# running the last one should win. So we first copy/move it to
# dest.<currenttime> (which might take a while for crossing file systems),
# then atomically rename to dest.
print('Moving image into final destination %s' % dest)
desttmp = dest + str(time.time())
shutil.move(image, desttmp)
os.rename(desttmp, dest)
#
# main
#
args = parse_args()
image = download_image(args.cloud_image_url, args.release, args.arch)
resize_image(image, args.disk_size)
seed = build_seed(args.mirror, args.proxy, args.no_apt_upgrade,
args.metadata, args.userdata, args.post_command)
boot_image(image, seed, args.qemu_command, args.verbose, args.timeout)
install_image(image, os.path.join(args.output_dir, 'adt-%s-%s-cloud.img' %
(args.release, args.arch)))
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