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#!/usr/bin/env python
# Ubuntu CI Engine
# Copyright 2014 Canonical Ltd.
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU Affero General Public License version 3, as
# published by the Free Software Foundation.
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranties of
# MERCHANTABILITY, SATISFACTORY QUALITY, or FITNESS FOR A PARTICULAR
# PURPOSE. See the GNU Affero General Public License for more details.
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import copy
import datetime
import os
import subprocess
import shutil
import sys
from charmhelpers import (
core,
fetch,
)
CHROOT_USER_HOME = '/root'
CHROOT_ROOT_PATH = '/var/cache/pbuilder'
def juju_info(msg, level='INFO'):
core.hookenv.log(msg, level)
def chroot_exists(path, dist, arch):
chroot_path = os.path.join(path, '{}-{}'.format(dist, arch))
return os.path.isdir(chroot_path)
def get_chroot_from_url(path, dist, arch, url):
if not url:
return False
chroot_path = os.path.join(path, '{}-{}'.format(dist, arch))
wget_path = os.path.join(path, '{}-{}.tgz'.format(dist, arch))
url_path = '{}/{}-{}.tgz'.format(url, dist, arch)
try:
subprocess.check_call(['wget', '-O', wget_path, url_path])
subprocess.check_call(['tar', '-xzf', wget_path, '-C', path])
except subprocess.CalledProcessError:
juju_info('Could not download or extract {}'.format(url_path),
'WARNING')
# Clean up
try:
subprocess.check_call(['rm', '-rf', chroot_path])
subprocess.check_call(['rm', '-rf', wget_path])
except subprocess.CalledProcessError:
raise EnvironmentError(
'Could not cleanup chroot {}'.format(chroot_path))
return False
return True
def update_chroot(path, dist, arch):
chroot_path = os.path.join(path, '{}-{}'.format(dist, arch))
chroot_env = copy.copy(os.environ)
chroot_env['DIST'] = dist
chroot_env['ARCH'] = arch
chroot_env['HOME'] = CHROOT_USER_HOME
try:
start = datetime.datetime.now()
subprocess.check_call(['cowbuilder', '--update'],
env=chroot_env)
end = datetime.datetime.now()
juju_info('chroot update: {}'.format(end - start))
except subprocess.CalledProcessError:
raise EnvironmentError(
'Could not update chroot {}'.format(chroot_path))
def create_chroot(path, dist, arch):
'''Creates a cowbuilder chroot given the dist and arch.'''
chroot_env = copy.copy(os.environ)
chroot_env['DIST'] = dist
chroot_env['ARCH'] = arch
chroot_env['HOME'] = CHROOT_USER_HOME
start = datetime.datetime.now()
juju_info('Attempting: cowbuilder --create for {}-{}'.format(dist, arch))
try:
subprocess.check_call(['cowbuilder', '--create',
'--distribution', dist,
'--architecture', arch,
'--debootstrapopts', '--variant=buildd'],
env=chroot_env)
subprocess.check_call(['cowbuilder', '--save',
'--execute', '--', '/usr/bin/apt-get',
'install', 'eatmydata', 'bzr-builddeb',
'software-properties-common', '-yq',
'--force-yes'],
env=chroot_env)
except subprocess.CalledProcessError as e:
raise EnvironmentError(
'Could not create chroot for {}-{} return: {}'.format(
dist, arch, e.returncode))
end = datetime.datetime.now()
juju_info('chroot create: {}'.format(end - start))
def setup_chroots(config):
distros = config['distros']
architectures = config['architectures']
base_url = config.get('chroot_base_url', '')
try:
dist_list = distros.split()
except:
juju_info('''Can't determine distros from [{}]'''.format(distros),
'ERROR')
return 1
try:
architecture_list = architectures.split()
except:
juju_info('''Can't determine architectures from [{}]'''.format(
architectures), 'ERROR')
return 1
for dist in dist_list:
for arch in architecture_list:
try:
if chroot_exists(CHROOT_ROOT_PATH, dist, arch):
update_chroot(CHROOT_ROOT_PATH, dist, arch)
elif get_chroot_from_url(CHROOT_ROOT_PATH, dist, arch,
base_url):
update_chroot(CHROOT_ROOT_PATH, dist, arch)
else:
create_chroot(CHROOT_ROOT_PATH, dist, arch)
except EnvironmentError as e:
juju_info('{}'.format(e), 'ERROR')
return 1
return 0
def setup_dependencies(config):
required_packages = ['bzr', 'cowbuilder']
fetch.apt_update()
juju_info('installing apt packages...')
fetch.apt_install(required_packages, fatal=True)
def setup_pbuilderrc(config):
cu2d_dir = '/srv/cu2d'
if os.path.exists(cu2d_dir):
subprocess.check_call(['bzr', 'update', cu2d_dir])
else:
try:
subprocess.check_call(['bzr', 'branch',
'lp:cupstream2distro/uci-airline',
cu2d_dir])
except subprocess.CalledProcessError as e:
raise EnvironmentError(
'Could not get cu2d (return: {})'.format(e.returncode))
shutil.copy(os.path.join(cu2d_dir, 'chroot-tools', '.pbuilderrc'),
CHROOT_USER_HOME)
def config_changed(config):
setup_dependencies(config)
setup_pbuilderrc(config)
setup_chroots(config)
def main():
hook = os.path.basename(sys.argv[0])
juju_info('Running hook: {}'.format(hook))
hook_py = hook.replace('-', '_')
funcs = globals()
if hook_py not in funcs:
print('Unknown hook: {}'.format(hook))
return 1
config = core.hookenv.config()
juju_info('Config: {}'.format(config))
try:
return funcs[hook_py](config)
except subprocess.CalledProcessError as e:
juju_info('Error running: {}: {}'.format(e.cmd, e.output))
return e.returncode
if __name__ == '__main__':
sys.exit(main())
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