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#!/usr/bin/python -u
# Copyright 2010, 2011 Canonical Ltd. This software is licensed under the
# GNU Affero General Public License version 3 (see the file LICENSE).
"""A script that builds a package from a recipe and a chroot."""
__metaclass__ = type
from optparse import OptionParser
import os
import pwd
import socket
from subprocess import (
PIPE,
Popen,
call,
check_call,
check_output,
)
import sys
from textwrap import dedent
from debian.deb822 import Deb822
RETCODE_SUCCESS = 0
RETCODE_FAILURE_INSTALL = 200
RETCODE_FAILURE_BUILD_TREE = 201
RETCODE_FAILURE_INSTALL_BUILD_DEPS = 202
RETCODE_FAILURE_BUILD_SOURCE_PACKAGE = 203
def call_report_rusage(args, env):
"""Run a subprocess.
Report that it was run, and the resources used, and complain if it fails.
:return: The process wait status.
"""
print 'RUN %r' % args
proc = Popen(args, env=env)
pid, status, rusage = os.wait4(proc.pid, 0)
print(rusage)
return status
class RecipeBuilder:
"""Builds a package from a recipe."""
def __init__(self, build_id, author_name, author_email,
suite, distroseries_name, component, archive_purpose,
git=False):
"""Constructor.
:param build_id: The id of the build (a str).
:param author_name: The name of the author (a str).
:param author_email: The email address of the author (a str).
:param suite: The suite the package should be built for (a str).
:param git: If True, build a git-based recipe; if False, build a
bzr-based recipe.
"""
self.build_id = build_id
self.author_name = author_name.decode('utf-8')
self.author_email = author_email
self.archive_purpose = archive_purpose
self.component = component
self.distroseries_name = distroseries_name
self.suite = suite
self.git = git
self.chroot_path = get_build_path(build_id, 'chroot-autobuild')
self.work_dir_relative = os.environ['HOME'] + '/work'
self.work_dir = os.path.join(self.chroot_path,
self.work_dir_relative[1:])
self.tree_path = os.path.join(self.work_dir, 'tree')
self.apt_dir_relative = os.path.join(self.work_dir_relative, 'apt')
self.apt_dir = os.path.join(self.work_dir, 'apt')
self.username = pwd.getpwuid(os.getuid())[0]
self.apt_sources_list_dir = os.path.join(
self.chroot_path, "etc/apt/sources.list.d")
def install(self):
"""Install all the requirements for building recipes.
:return: A retcode from apt.
"""
return self.chroot(['apt-get', 'install', '-y', 'lsb-release'])
def buildTree(self):
"""Build the recipe into a source tree.
As a side-effect, sets self.source_dir_relative.
:return: a retcode from `bzr dailydeb` or `git-build-recipe`.
"""
assert not os.path.exists(self.tree_path)
recipe_path = os.path.join(self.work_dir, 'recipe')
manifest_path = os.path.join(self.tree_path, 'manifest')
recipe_file = open(recipe_path, 'rb')
try:
recipe = recipe_file.read()
finally:
recipe_file.close()
# As of bzr 2.2, a defined identity is needed. In this case, we're
# using buildd@<hostname>.
hostname = socket.gethostname()
email = 'buildd@%s' % hostname
lsb_release = Popen(['/usr/bin/sudo',
'/usr/sbin/chroot', self.chroot_path, 'lsb_release',
'-r', '-s'], stdout=PIPE)
distroseries_version = lsb_release.communicate()[0].rstrip()
assert lsb_release.returncode == 0
if self.git:
print 'Git version:'
check_call(['git', '--version'])
print check_output(
['dpkg-query', '-W', 'git-build-recipe']).rstrip(
'\n').replace('\t', ' ')
else:
print 'Bazaar versions:'
check_call(['bzr', 'version'])
check_call(['bzr', 'plugins'])
print 'Building recipe:'
print recipe
sys.stdout.flush()
env = {
'DEBEMAIL': self.author_email,
'DEBFULLNAME': self.author_name.encode('utf-8'),
'EMAIL': email,
'LANG': 'C.UTF-8',
}
if self.git:
cmd = ['git-build-recipe']
else:
cmd = ['bzr', '-Derror', 'dailydeb']
cmd.extend([
'--safe', '--no-build',
'--manifest', manifest_path,
'--distribution', self.distroseries_name,
'--allow-fallback-to-native',
'--append-version', '~ubuntu%s.1' % distroseries_version,
recipe_path, self.tree_path,
])
retcode = call_report_rusage(cmd, env=env)
if retcode != 0:
return retcode
(source,) = [name for name in os.listdir(self.tree_path)
if os.path.isdir(os.path.join(self.tree_path, name))]
self.source_dir_relative = os.path.join(
self.work_dir_relative, 'tree', source)
return retcode
def getPackageName(self):
source_dir = os.path.join(
self.chroot_path, self.source_dir_relative.lstrip('/'))
changelog = os.path.join(source_dir, 'debian/changelog')
return open(changelog, 'r').readline().split(' ')[0]
def getSourceControl(self):
"""Return the parsed source control stanza from the source tree."""
source_dir = os.path.join(
self.chroot_path, self.source_dir_relative.lstrip('/'))
with open(os.path.join(source_dir, 'debian/control')) as control_file:
# Don't let Deb822.iter_paragraphs use apt_pkg.TagFile
# internally, since that only handles real tag files and not the
# slightly more permissive syntax of debian/control which also
# allows comments.
return Deb822.iter_paragraphs(
control_file, use_apt_pkg=False).next()
def makeDummyDsc(self, package):
control = self.getSourceControl()
with open(os.path.join(
self.apt_dir, "%s.dsc" % package), "w") as dummy_dsc:
print >>dummy_dsc, dedent("""\
Format: 1.0
Source: %(package)s
Architecture: any
Version: 99:0
Maintainer: invalid@example.org""") % {"package": package}
for field in (
"Build-Depends", "Build-Depends-Indep",
"Build-Conflicts", "Build-Conflicts-Indep",
):
if field in control:
print >>dummy_dsc, "%s: %s" % (field, control[field])
print >>dummy_dsc
def runAptFtparchive(self):
conf_path = os.path.join(self.apt_dir, "ftparchive.conf")
with open(conf_path, "w") as conf:
print >>conf, dedent("""\
Dir::ArchiveDir "%(apt_dir)s";
Default::Sources::Compress ". bzip2";
BinDirectory "%(apt_dir)s" { Sources "Sources"; };
APT::FTPArchive::Release {
Origin "buildrecipe-archive";
Label "buildrecipe-archive";
Suite "invalid";
Codename "invalid";
Description "buildrecipe temporary archive";
};""") % {"apt_dir": self.apt_dir}
ftparchive_env = dict(os.environ)
ftparchive_env.pop("APT_CONFIG", None)
ret = call(
["apt-ftparchive", "-q=2", "generate", conf_path],
env=ftparchive_env)
if ret != 0:
return ret
with open(os.path.join(self.apt_dir, "Release"), "w") as release:
return call(
["apt-ftparchive", "-q=2", "-c", conf_path, "release",
self.apt_dir],
stdout=release, env=ftparchive_env)
def enableAptArchive(self):
"""Enable the dummy apt archive.
We run "apt-get update" with a temporary sources.list and some
careful use of APT::Get::List-Cleanup=false, so that we don't have
to update all sources (and potentially need to mimic the care taken
by update-debian-chroot, etc.).
"""
tmp_list_path = os.path.join(self.apt_dir, "buildrecipe-archive.list")
tmp_list_path_relative = os.path.join(
self.apt_dir_relative, "buildrecipe-archive.list")
with open(tmp_list_path, "w") as tmp_list:
print >>tmp_list, "deb-src file://%s ./" % self.apt_dir_relative
ret = self.chroot([
'apt-get',
'-o', 'Dir::Etc::sourcelist=%s' % tmp_list_path_relative,
'-o', 'APT::Get::List-Cleanup=false',
'update',
])
if ret == 0:
list_path = os.path.join(
self.apt_sources_list_dir, "buildrecipe-archive.list")
return call(['sudo', 'mv', tmp_list_path, list_path])
return ret
def setUpAptArchive(self, package):
"""Generate a dummy apt archive with appropriate build-dependencies.
Based on Sbuild::ResolverBase.
"""
os.makedirs(self.apt_dir)
self.makeDummyDsc(package)
ret = self.runAptFtparchive()
if ret != 0:
return ret
return self.enableAptArchive()
def installBuildDeps(self):
"""Install the build-depends of the source tree."""
package = self.getPackageName()
currently_building_path = os.path.join(
self.chroot_path, 'CurrentlyBuilding')
currently_building_contents = (
'Package: %s\n'
'Suite: %s\n'
'Component: %s\n'
'Purpose: %s\n'
'Build-Debug-Symbols: no\n' %
(package, self.suite, self.component, self.archive_purpose))
currently_building = open(currently_building_path, 'w')
currently_building.write(currently_building_contents)
currently_building.close()
self.setUpAptArchive(package)
return self.chroot(
['apt-get', 'build-dep', '-y', '--only-source', package])
def chroot(self, args, echo=False):
"""Run a command in the chroot.
:param args: the command and arguments to run.
:return: the status code.
"""
if echo:
print "Running in chroot: %s" % ' '.join(
"'%s'" % arg for arg in args)
sys.stdout.flush()
return call([
'/usr/bin/sudo', '/usr/sbin/chroot', self.chroot_path] + args)
def buildSourcePackage(self):
"""Build the source package.
:return: a retcode from dpkg-buildpackage.
"""
retcode = self.chroot([
'su', '-c',
'cd %s && /usr/bin/dpkg-buildpackage -i -I -us -uc -S -sa'
% self.source_dir_relative, self.username])
for filename in os.listdir(self.tree_path):
path = os.path.join(self.tree_path, filename)
if os.path.isfile(path):
os.rename(path, get_build_path(self.build_id, filename))
return retcode
def get_build_path(build_id, *extra):
"""Generate a path within the build directory.
:param build_id: the build id to use.
:param extra: the extra path segments within the build directory.
:return: the generated path.
"""
return os.path.join(
os.environ["HOME"], "build-" + build_id, *extra)
def main():
parser = OptionParser(usage=(
"usage: %prog BUILD-ID AUTHOR-NAME AUTHOR-EMAIL SUITE "
"DISTROSERIES-NAME COMPONENT ARCHIVE-PURPOSE"))
parser.add_option(
"--git", default=False, action="store_true",
help="build a git recipe (default: bzr)")
options, args = parser.parse_args()
builder = RecipeBuilder(*args, git=options.git)
if builder.install() != 0:
return RETCODE_FAILURE_INSTALL
if builder.buildTree() != 0:
return RETCODE_FAILURE_BUILD_TREE
if builder.installBuildDeps() != 0:
return RETCODE_FAILURE_INSTALL_BUILD_DEPS
if builder.buildSourcePackage() != 0:
return RETCODE_FAILURE_BUILD_SOURCE_PACKAGE
return RETCODE_SUCCESS
if __name__ == '__main__':
sys.exit(main())
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