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#! /usr/bin/python3
# Copyright (C) 2012 Canonical Ltd.
# Author: Colin Watson <cjwatson@ubuntu.com>
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 3 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""Branch a set of Ubuntu seeds for the next release."""
from __future__ import print_function
from optparse import OptionParser
import os
import re
import time
import subprocess
try:
from urllib.parse import urlparse
except ImportError:
from urlparse import urlparse
from launchpadlib.launchpad import Launchpad
from enum import Enum
class VCS(Enum):
Git = 1
Bazaar = 2
@staticmethod
def detect_vcs(source):
if os.path.exists(os.path.join(source, ".git")):
return VCS.Git
elif os.path.exists(os.path.join(source, ".bzr")):
return VCS.Bazaar
else:
return None
def remote_bzr_branch(source):
# TODO: should really use bzrlib instead
info = subprocess.check_output(
["bzr", "info", source], universal_newlines=True)
for line in info.splitlines():
if "checkout of branch:" in line:
return line.split(": ")[1].rstrip("/")
else:
raise Exception("Unable to find remote branch for %s" % source)
def remote_git_repository(source, srcbranch):
fullbranch = subprocess.check_output(
["git", "rev-parse", "--symbolic-full-name",
srcbranch + "@{upstream}"],
universal_newlines=True, cwd=source)
return subprocess.check_output(
["git", "ls-remote", "--get-url", fullbranch.split("/")[2]],
universal_newlines=True, cwd=source).rstrip("\n")
def lp_branch(options, url):
return options.launchpad.branches.getByUniqueName(
unique_name=urlparse(url).path.lstrip("/"))
def branch(options, collection):
source = "%s.%s" % (collection, options.source_series)
dest = "%s.%s" % (collection, options.dest_series)
vcs = VCS.detect_vcs(source)
if vcs:
if vcs is VCS.Bazaar:
subprocess.check_call(["bzr", "up", source])
remote_source = remote_bzr_branch(source)
remote_dest = os.path.join(os.path.dirname(remote_source), dest)
subprocess.check_call(["bzr", "branch", source, dest])
subprocess.check_call(["bzr", "push", "-d", dest, remote_dest])
subprocess.check_call(["bzr", "bind", ":push"], cwd=dest)
lp_source = lp_branch(options, remote_source)
lp_source.lifecycle_status = "Mature"
lp_source.lp_save()
lp_dest = lp_branch(options, remote_dest)
lp_dest.lifecycle_status = "Development"
lp_dest.lp_save()
elif vcs is VCS.Git:
subprocess.check_call(["git", "fetch"], cwd=source)
subprocess.check_call(["git", "reset", "--hard", "FETCH_HEAD"], cwd=source)
os.rename(source, dest)
subprocess.check_call(["git", "checkout", "-b", options.dest_series], cwd=dest)
re_include_source = re.compile(
r"^(include )(.*)\.%s" % options.source_series)
new_lines = []
message = []
with open(os.path.join(dest, "STRUCTURE")) as structure:
for line in structure:
match = re_include_source.match(line)
if match:
new_lines.append(re_include_source.sub(
r"\1\2.%s" % options.dest_series, line))
message.append(
"%s.%s -> %s.%s" %
(match.group(2), options.source_series,
match.group(2), options.dest_series))
else:
new_lines.append(line)
if message:
with open(os.path.join(dest, "STRUCTURE.new"), "w") as structure:
for line in new_lines:
print(line, end="", file=structure)
os.rename(
os.path.join(dest, "STRUCTURE.new"),
os.path.join(dest, "STRUCTURE"))
if vcs is VCS.Bazaar:
subprocess.check_call(
["bzr", "commit", "-m", "; ".join(message)], cwd=dest)
elif vcs is VCS.Git:
subprocess.check_call(["git", "add", "STRUCTURE"], cwd=dest)
subprocess.check_call(
["git", "commit", "-m", "; ".join(message)], cwd=dest)
subprocess.check_call(
["git", "push", "origin", options.dest_series], cwd=dest)
remote = remote_git_repository(dest, options.source_series)
if "git.launchpad.net" in remote:
lp_git_repo = options.launchpad.git_repositories.getByPath(
path=urlparse(remote).path.lstrip("/"))
new_ref = "refs/heads/%s" % options.dest_series
# Sometimes it takes LP a while to notice the new ref
for i in range(10):
if lp_git_repo.getRefByPath(path=new_ref):
lp_git_repo.default_branch = new_ref
lp_git_repo.lp_save()
break
time.sleep(1)
else:
raise Exception(
"Was unable to set default_branch of %s after "
"multiple retries - proceed manually." % remote)
else:
raise Exception(
"Git remote URL must be on git.launchpad.net.")
def main():
parser = OptionParser(usage="usage: %prog [options] collection ...")
parser.add_option(
"-l", "--launchpad", dest="launchpad_instance", default="production")
parser.add_option(
"--source-series",
help="source series (default: current stable release)")
parser.add_option(
"--dest-series",
help="destination series (default: series in pre-release freeze)")
options, args = parser.parse_args()
if not args:
parser.error("You must specify at least one seed collection.")
options.launchpad = Launchpad.login_with(
"branch-seeds", options.launchpad_instance, version="devel")
distro = options.launchpad.distributions["ubuntu"]
if options.source_series is None:
options.source_series = [
series.name for series in distro.series
if series.status == "Current Stable Release"][0]
if options.dest_series is None:
options.dest_series = [
series.name for series in distro.series
if series.status == "Pre-release Freeze"][0]
for collection in args:
branch(options, collection)
main()
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