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container_build.py
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container_build.py
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#!/usr/bin/env python
# Copyright (c) 2014-2016, The Regents of the University of California.
# Copyright (c) 2016-2017, Nefeli Networks, Inc.
# Copyright (c) 2017, Cloudigo.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
#
# * Neither the names of the copyright holders nor the names of their
# contributors may be used to endorse or promote products derived from this
# software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
from __future__ import print_function
import sys
import subprocess
import os
import os.path
import re
import argparse
IMAGE = 'nefelinetworks/bess_build:latest' + os.getenv('TAG_SUFFIX', '')
BESS_DIR_HOST = os.path.dirname(os.path.abspath(__file__))
BESS_DIR_CONTAINER = '/build/bess'
BUILD_SCRIPT = './build.py'
PLUGINS = []
CCACHE_DIR_HOST = '~/.ccache'
CCACHE_DIR_CONTAINER = '/tmp/ccache'
def docker_mount_args(plugins):
"""
Return the string of arguments to "docker run" suitable for
mounting BESS_DIR_HOST (as BESS_DIR_CONTAINER), ccache, and
all the plugins under their original paths.
Note, the plugins must not live under the BESS_DIR_CONTAINER
directory itself since that will not play well. But plugins
can live under a previously-exported path, including the
BESS directory itself -- this is the case for the sample
plugin, for instance.
"""
for path in plugins:
if not os.path.isabs(path):
sys.exit('Error: plugin {!r} path is not absolute'.format(path))
if path.startswith(BESS_DIR_CONTAINER + os.path.sep):
sys.exit('Error: plugin {!r}: path {!r} is taken by '
'bess'.format(path, BESS_DIR_CONTAINER))
# If the ccache directory does not exist, create one owned by the current
# user (otherwise Docker will create one with root:root)
os.system('mkdir -p %s' % CCACHE_DIR_HOST)
ret = ['-v {}:{}'.format(CCACHE_DIR_HOST, CCACHE_DIR_CONTAINER),
'-v {}:{}'.format(BESS_DIR_HOST, BESS_DIR_CONTAINER)]
# Make sure longer paths that are prefixes of shorter paths
# appear after the shorter paths. That way we mount only
# /foo/bar if both /foo/bar and /foo/bar/sub/dir are listed.
earlier = {BESS_DIR_HOST: True}
for path in sorted(plugins, key=lambda x: x + os.path.sep):
# given, e.g., /foo/bar/baz we want to look at /foo, /foo/bar,
# and /foo/bar/baz to see if they're already in the mount list.
components = path.split(os.path.sep)
components[0] = os.path.sep
for i in range(1, len(components)):
if os.path.join(*components[:i + 1]) in earlier:
# already mounted
break
else:
# no prefix is mounted yet
ret.append('-v {path}:{path}'.format(path=path))
earlier[path] = True
return ' '.join(ret)
def run_cmd(cmd):
proc = subprocess.Popen(cmd, shell=True)
proc.communicate()
if proc.returncode:
print('Error has occured running host command: %s' % cmd,
file=sys.stderr)
sys.exit(proc.returncode)
def shell_quote(cmd):
return "'" + cmd.replace("'", "'\\''") + "'"
def docker_env_args():
env_vars = ['V', 'CXX', 'DEBUG', 'SANITIZE']
return ' '.join(['-e %s' % var for var in env_vars])
def run_docker_cmd(cmd):
run_cmd('docker run %s --rm -t -u %d:%d %s %s sh -c %s' %
(docker_env_args(), os.getuid(), os.getgid(),
docker_mount_args(PLUGINS), IMAGE, shell_quote(cmd)))
def run_shell():
run_cmd('docker run %s --rm -it %s %s' %
(docker_env_args(), docker_mount_args(PLUGINS), IMAGE))
def find_current_plugins():
"return list of existing plugins"
result = []
try:
for line in open('core/extra.mk').readlines():
match = re.match(r'PLUGINS \+= (.*)', line)
if match:
result.append(match.group(1))
except (OSError, IOError):
pass
return result
def build_bess():
run_docker_cmd('%s bess' % BUILD_SCRIPT)
def build_kmod():
subprocess.check_output('uname -r', shell=True).strip()
try:
run_docker_cmd('%s kmod' % BUILD_SCRIPT)
except:
print('*** module build has failed.', file=sys.stderr)
def build_kmod_buildtest():
kernels_to_test = '/lib/modules/*/build'
kmod_build = 'KERNELDIR=$0 %s kmod' % BUILD_SCRIPT
run_docker_cmd('ls -x -d %s | xargs -n 1 sh -c %s' %
(kernels_to_test, shell_quote(kmod_build)))
def build_all():
build_bess()
build_kmod()
def do_clean():
run_docker_cmd('%s clean' % BUILD_SCRIPT)
def do_dist_clean():
run_docker_cmd('%s dist_clean' % BUILD_SCRIPT)
def print_usage(parser):
parser.print_help(file=sys.stderr)
sys.exit(2)
def main():
os.chdir(BESS_DIR_HOST)
parser = argparse.ArgumentParser(description='Build BESS in container')
cmds = {
'all': build_all,
'bess': build_bess,
'kmod': build_kmod,
'kmod_buildtest': build_kmod_buildtest,
'clean': do_clean,
'dist_clean': do_dist_clean,
'shell': run_shell,
'help': lambda: print_usage(parser),
}
cmdlist = sorted(cmds.keys())
parser.add_argument(
'action',
metavar='action',
nargs='?',
default='all',
choices=cmdlist,
help='Action is one of ' + ', '.join(cmdlist))
parser.add_argument('-v', '--verbose', action='store_true',
help='pass verbose flag to build inside container')
args = parser.parse_args()
if args.verbose:
os.environ['V'] = '1'
PLUGINS.extend(find_current_plugins())
cmds[args.action]()
if __name__ == '__main__':
main()
print('Done.')