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# This module contains some helper functions and classes for ick
# pipelines, specifically for doing release builds. They're in a
# Python module, in a git repo, so they're easy to use. They started
# life as a normal ick pipeline, but grew up to be big enough that
# embedding the code in YAML was too tedious and hard to debug.
import glob
import json
import os
import re
import sys
import subprocess
# Set this to False to make debug() be silent.
verbose = True
# Write a debug log message.
def debug(*args):
if verbose:
print(*args)
class Exec:
# A class to execute external commands in a directory.
def __init__(self, dirname):
self.dirname = dirname
def run(self, *args, **kwargs):
# Run a command.
if 'cwd' not in kwargs:
kwargs['cwd'] = self.dirname
if 'check' not in kwargs:
kwargs['check'] = True
if 'stdout' not in kwargs:
kwargs['stdout'] = subprocess.PIPE
if 'stderr' not in kwargs:
kwargs['stderr'] = subprocess.STDOUT
debug('RUN:', args, kwargs)
x = subprocess.run(args, **kwargs)
if kwargs['stdout'] == subprocess.PIPE:
if x.stdout:
sys.stdout.write(x.stdout.decode('UTF-8'))
return x
def get_stdout(self, *args, **kwargs):
# Run a command, capture its stdout. Fail on non-zero exit.
kwargs['check'] = True
kwargs['stdout'] = subprocess.PIPE
x = self.run(*args, **kwargs)
return x.stdout.decode('UTF-8')
def run_silently(self, *args, **kwargs):
# Run a command, don't capture output. Return exit code.
kwargs['stdout'] = kwargs['stderr'] = subprocess.DEVNULL
kwargs['check'] = False
return self.run(*args, **kwargs)
def is_signed_tag(self, tag):
x = self.run_silently('git', 'tag', '--verify', tag)
return x.returncode == 0
def is_named_as_release_tag(self, tag, project):
prefix = tag[:len(project)]
suffix = tag[len(prefix):]
return prefix == project and re.match(r'^-\d+\.\d+(\.\d+)*$', suffix)
def is_release_tag(self, tag, project):
if not self.is_signed_tag(tag):
debug('tag is not signed:', tag)
return False
if not self.is_named_as_release_tag(tag, project):
debug('tag is not named correctly for a release tag:', tag)
return False
debug('seems to be a release tag:', tag)
return True
def get_project_name(self):
setup_py = os.path.join(self.dirname, 'setup.py')
if os.path.exists(setup_py) and self.got_command('python3'):
output = self.get_stdout('python3', 'setup.py', '--name')
elif os.path.exists(setup_py) and self.got_command('python'):
output = self.get_stdout('python', 'setup.py', '--name')
else:
output = self.get_stdout('dpkg-parsechangelog', '-S', 'Source')
return output.strip()
def got_command(self, cmd):
return self.run_silently('sh', '-c', 'command -v "$1"', '-', cmd) == 0
def get_version_from_tag(self, tag):
parts = tag.split('-', 1)
debug('tag parts:', parts)
assert len(parts) == 2
return parts[1]
def find_all_tags(self):
output = self.get_stdout('git', 'tag', '-l')
return output.splitlines()
def find_release_tags(self, project):
tags = self.find_all_tags()
return [
tag
for tag in tags
if self.is_release_tag(tag, project)
]
def create_tarball_from_tag(self, ref, filename):
self.run('git', 'archive', '-o', 'temp.tar', ref)
self.run('xz', '-9', 'temp.tar')
self.run('mv', 'temp.tar.xz', filename)
class Version:
def __init__(self, full_version):
self._full_version = full_version
def __str__(self):
return self._full_version
def upstream_append(self, morever):
assert '-' in self._full_version
parts = self._full_version.split('-')
self._full_version = '{}{}-1'.format(self.upstream, morever)
@property
def full(self):
return self._full_version
@property
def upstream(self):
parts = self._full_version.split('-', 1)
return parts[0]
@property
def debian(self):
parts = self._full_version.split('-', 1)
if len(parts) == 1:
return None
return parts[1]
class DebianBuilderBase:
def __init__(self, ex, debfullname, debemail):
self.ex = ex
self.debfullname = debfullname
self.debemail = debemail
def create_upstream_tarball(self, basename, ref):
tarball = os.path.abspath(basename)
self.ex.create_tarball_from_tag(ref, tarball)
return basename
def create_debian_orig_tarball(self, upstream_tarball, source, version):
tarball = '{}_{}.orig.tar.xz'.format(source, version.upstream)
os.link(upstream_tarball, tarball)
debug('upstream_tarball:', tarball)
return tarball
def get_source_package(self):
output = self.ex.get_stdout('dpkg-parsechangelog', '-S', 'Source')
source = output.strip()
debug('Source package:', source)
return source
def get_version(self):
output = self.ex.get_stdout('dpkg-parsechangelog', '-S', 'Version')
version = Version(output.strip())
debug('Version:', version)
return version
def get_distribution(self):
output = self.ex.get_stdout('dpkg-parsechangelog', '-S', 'Distribution')
curdist = output.strip()
debug('Distribution:', curdist)
return curdist
def set_distribution(self, version, distribution):
env = dict(os.environ)
env['DEBFULLNAME'] = self.debfullname
env['DEBEMAIL'] = self.debemail
newver = '{}.{}'.format(version.full, distribution)
debug('newver:', newver)
msg = 'Build in ick.'
self.ex.run(
'dch', '--no-conf', '-v', newver, '-D', distribution,
'--force-distribution', msg, env=env)
self.ex.run('dch', '--no-conf', '-r', '', env=env)
def create_dsc(self):
self.ex.run('dpkg-buildpackage', '-S', '--no-sign', '-sa')
def build_deb(self):
self.ex.run('dpkg-buildpackage', '-b', '--no-sign')
class DebianReleaseBuilder(DebianBuilderBase):
def __init__(self, ex, resultsdir, debfullname, debemail):
super().__init__(ex, debfullname, debemail)
self.results = resultsdir
def build(self, tag, distribution):
self.checkout(tag)
basename = '{}.tar.xz'.format(tag)
upstream_tarball = self.create_upstream_tarball(basename, tag)
self.stash(upstream_tarball)
source = self.get_source_package()
version = self.get_version()
curdist = self.get_distribution()
orig_tarball = self.create_debian_orig_tarball(
upstream_tarball, source, version)
if curdist != distribution:
self.set_distribution(version, distribution)
self.create_dsc()
self.build_deb()
debian_files = glob.glob('{}_{}*'.format(source, version.upstream))
debian_files = [x for x in debian_files if '+git' not in x]
self.stash(*debian_files)
filenames = glob.glob('{}_{}*'.format(source, version.upstream))
filenames.append(upstream_tarball)
self.cleanup(filenames)
def checkout(self, tag):
self.ex.run('git', 'reset', '--hard', check=False)
self.ex.run('git', 'clean', '-fdx', check=False)
self.ex.run('git', 'checkout', 'master', check=False)
self.ex.run('git', 'branch', '-d', '__ickbuild', check=False)
self.ex.run('git', 'checkout', '-b', '__ickbuild', tag)
def stash(self, *filenames):
if not os.path.exists(self.results):
os.mkdir(self.results)
for filename in filenames:
dst = os.path.join(self.results, filename)
debug('STASH:', filename, '->', dst)
os.link(filename, dst)
def cleanup(self, filenames):
for filename in filenames:
debug('DELETE', filename)
os.remove(filename)
class DebianCIBuilder(DebianBuilderBase):
def __init__(self, ex, debfullname, debemail):
self.ex = ex
self.debfullname = debfullname
self.debemail = debemail
def build(self, distribution):
source = self.get_source_package()
version = self.get_version()
curdist = self.get_distribution()
morever = '.0ci{}.{}'.format(os.environ['BUILD_NUMBER'], distribution)
version.upstream_append(morever)
debug('appending to upstream version:', morever)
debug('full version now:', version)
basename = '{}-{}.tar.xz'.format(source, version.upstream)
upstream_tarball = self.create_upstream_tarball(basename, 'HEAD')
orig_tarball = self.create_debian_orig_tarball(
upstream_tarball, source, version)
self.set_distribution(version, distribution)
self.create_dsc()
self.build_deb()
class KnownTags:
filename = '.known_tags'
def __init__(self):
self.known = {}
if os.path.exists(self.filename):
with open(self.filename) as f:
self.known = json.load(f)
def is_empty(self):
return len(self.known) == 0
def is_known(self, tag, distribution):
dists = self.known.get(tag, [])
return distribution in dists
def remember(self, tag, distribution):
dists = self.known.get(tag, [])
if distribution not in dists:
self.known[tag] = dists + [distribution]
with open(self.filename, 'w') as f:
json.dump(self.known, f, indent=4)
def find_upstream_dirs(sources):
for source in sources:
dirname = source['location']
control = os.path.join(dirname, 'debian', 'control')
if os.path.exists(control):
debug('Found debian/control in', dirname)
yield dirname
def build_debian_releases(params, resultsdir):
sources = params['sources']
distribution = params['distribution_rel']
debfullname = params['DEBFULLNAME']
debemail = params['DEBEMAIL']
known = KnownTags()
first_build = known.is_empty()
dirnames = find_upstream_dirs(sources)
for dirname in dirnames:
ex = Exec(dirname)
project = ex.get_project_name()
tags = ex.find_release_tags(project)
debug('release tags:', tags)
builder = DebianReleaseBuilder(ex, resultsdir, debfullname, debemail)
for tag in tags:
if first_build:
debug('First build, not building', tag, 'for', distribution)
elif not known.is_known(tag, distribution):
debug('Building tag', tag, 'for', distribution)
builder.build(tag, distribution)
else:
debug('Already built, not building', tag, 'for', distribution)
known.remember(tag, distribution)
def ci_build_debian(params):
sources = params['sources']
distribution = params['distribution_ci']
debfullname = params['DEBFULLNAME']
debemail = params['DEBEMAIL']
dirnames = find_upstream_dirs(sources)
for dirname in dirnames:
ex = Exec(dirname)
project = ex.get_project_name()
builder = DebianCIBuilder(ex, debfullname, debemail)
builder.build(distribution)
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