155 lines
4.7 KiB
Python
Executable File
155 lines
4.7 KiB
Python
Executable File
#!/usr/bin/env python3
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# Build the Debian packages using Docker images.
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#
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# This script builds the Docker images and then executes them sequentially, each
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# one building a Debian package for the targeted operating system. It is
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# designed to be a "single command" to produce all the images.
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#
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# By default, builds for all known distributions, but a list of distributions
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# can be passed on the commandline for debugging.
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import argparse
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import os
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import signal
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import subprocess
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import sys
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import threading
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from concurrent.futures import ThreadPoolExecutor
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DISTS = (
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"debian:stretch",
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"debian:buster",
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"debian:sid",
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"ubuntu:xenial",
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"ubuntu:bionic",
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"ubuntu:cosmic",
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)
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DESC = '''\
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Builds .debs for synapse, using a Docker image for the build environment.
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By default, builds for all known distributions, but a list of distributions
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can be passed on the commandline for debugging.
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'''
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class Builder(object):
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def __init__(self, redirect_stdout=False):
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self.redirect_stdout = redirect_stdout
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self.active_containers = set()
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self._lock = threading.Lock()
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self._failed = False
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def run_build(self, dist):
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"""Build deb for a single distribution"""
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if self._failed:
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print("not building %s due to earlier failure" % (dist, ))
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raise Exception("failed")
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try:
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self._inner_build(dist)
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except Exception as e:
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print("build of %s failed: %s" % (dist, e), file=sys.stderr)
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self._failed = True
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raise
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def _inner_build(self, dist):
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projdir = os.path.dirname(os.path.dirname(os.path.realpath(__file__)))
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os.chdir(projdir)
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tag = dist.split(":", 1)[1]
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# Make the dir where the debs will live.
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#
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# Note that we deliberately put this outside the source tree, otherwise
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# we tend to get source packages which are full of debs. (We could hack
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# around that with more magic in the build_debian.sh script, but that
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# doesn't solve the problem for natively-run dpkg-buildpakage).
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debsdir = os.path.join(projdir, '../debs')
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os.makedirs(debsdir, exist_ok=True)
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if self.redirect_stdout:
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logfile = os.path.join(debsdir, "%s.buildlog" % (tag, ))
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print("building %s: directing output to %s" % (dist, logfile))
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stdout = open(logfile, "w")
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else:
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stdout = None
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# first build a docker image for the build environment
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subprocess.check_call([
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"docker", "build",
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"--tag", "dh-venv-builder:" + tag,
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"--build-arg", "distro=" + dist,
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"-f", "docker/Dockerfile-dhvirtualenv",
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"docker",
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], stdout=stdout, stderr=subprocess.STDOUT)
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container_name = "synapse_build_" + tag
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with self._lock:
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self.active_containers.add(container_name)
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# then run the build itself
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subprocess.check_call([
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"docker", "run",
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"--rm",
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"--name", container_name,
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"--volume=" + projdir + ":/synapse/source:ro",
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"--volume=" + debsdir + ":/debs",
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"-e", "TARGET_USERID=%i" % (os.getuid(), ),
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"-e", "TARGET_GROUPID=%i" % (os.getgid(), ),
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"dh-venv-builder:" + tag,
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], stdout=stdout, stderr=subprocess.STDOUT)
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with self._lock:
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self.active_containers.remove(container_name)
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if stdout is not None:
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stdout.close()
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print("Completed build of %s" % (dist, ))
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def kill_containers(self):
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with self._lock:
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active = list(self.active_containers)
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for c in active:
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print("killing container %s" % (c,))
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subprocess.run([
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"docker", "kill", c,
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], stdout=subprocess.DEVNULL)
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with self._lock:
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self.active_containers.remove(c)
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def run_builds(dists, jobs=1):
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builder = Builder(redirect_stdout=(jobs > 1))
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def sig(signum, _frame):
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print("Caught SIGINT")
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builder.kill_containers()
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signal.signal(signal.SIGINT, sig)
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with ThreadPoolExecutor(max_workers=jobs) as e:
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res = e.map(builder.run_build, dists)
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# make sure we consume the iterable so that exceptions are raised.
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for r in res:
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pass
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if __name__ == '__main__':
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parser = argparse.ArgumentParser(
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description=DESC,
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)
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parser.add_argument(
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'-j', '--jobs', type=int, default=1,
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help='specify the number of builds to run in parallel',
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)
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parser.add_argument(
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'dist', nargs='*', default=DISTS,
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help='a list of distributions to build for. Default: %(default)s',
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)
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args = parser.parse_args()
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run_builds(dists=args.dist, jobs=args.jobs)
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