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Prototype cros_build_packages, which builds and extracts build tarballs.

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Usage: cros_build_packages [options]

Options:
  -h, --help       show this help message and exit
  --board=BOARD    The board to build packages for.
  --debug          Include debug symbols.
  --nowithdev      Don't build useful developer friendly utilities.
  --nowithtest     Build packages required for testing.
  --nowithfactory  Build factory installer
  --nousepkg       Don't use binary packages.
  --nousetarball   Don't use tarball.
  --nofast         Don't merge packages in parallel.

BUG=chromium-os:6604
TEST=Ran cros_build_packages and ./cros_build_packages --nousetarball

Review URL: http://codereview.chromium.org/3315020

Change-Id: Ida9ed6375c2ce4acde304bd3f2796b4419f1d376
This commit is contained in:
David James 2010-09-16 13:05:06 -07:00
parent a4e793268b
commit a48cb7e19d
1 changed files with 275 additions and 0 deletions
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chromite/bin/cros_build_packages Executable file
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#!/usr/bin/python2.6
# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
import optparse
import os
import multiprocessing
import sys
import tempfile
sys.path.insert(0, os.path.abspath(__file__ + "/../../lib"))
from cros_build_lib import Die
from cros_build_lib import Info
from cros_build_lib import RunCommand
from cros_build_lib import Warning
def BuildPackages():
"""Build packages according to options specified on command-line."""
if os.getuid() != 0:
Die("superuser access required")
scripts_dir = os.path.abspath(__file__ + "/../../..")
builder = PackageBuilder(scripts_dir)
options, _ = builder.ParseArgs()
# Calculate packages to install.
# TODO(davidjames): Grab these from a spec file.
packages = ["chromeos-base/chromeos"]
if options.withdev:
packages.append("chromeos-base/chromeos-dev")
if options.withfactory:
packages.append("chromeos-base/chromeos-factoryinstall")
if options.withtest:
packages.append("chromeos-base/chromeos-test")
if options.usetarball:
builder.ExtractTarball(options, packages)
else:
builder.BuildTarball(options, packages)
def _Apply(args):
"""Call the function specified in args[0], with arguments in args[1:]."""
return apply(args[0], args[1:])
def _GetLatestPrebuiltPrefix(board):
"""Get the latest prebuilt prefix for the specified board.
Args:
board: The board you want prebuilts for.
Returns:
Latest prebuilt prefix.
"""
# TODO(davidjames): Also append profile names here.
prefix = "http://commondatastorage.googleapis.com/chromeos-prebuilt/board"
tmpfile = tempfile.NamedTemporaryFile()
_Run("curl '%s/%s-latest' -o %s" % (prefix, board, tmpfile.name), retries=3)
tmpfile.seek(0)
latest = tmpfile.read().strip()
tmpfile.close()
return "%s/%s" % (prefix, latest)
def _GetPrebuiltDownloadCommands(prefix):
"""Return a list of commands for grabbing packages.
There must be a file called "packages/Packages" that contains the list of
packages. The specified list of commands will fill the packages directory
with the bzipped packages from the specified prefix.
Args:
prefix: Url prefix to download packages from.
Returns:
List of commands for grabbing packages.
"""
cmds = []
for line in file("packages/Packages"):
if line.startswith("CPV: "):
pkgpath, pkgname = line.replace("CPV: ", "").strip().split("/")
path = "%s/%s.tbz2" % (pkgpath, pkgname)
url = "%s/%s" % (prefix, path)
dirname = "packages/%s" % pkgpath
fullpath = "packages/%s" % path
if not os.path.exists(dirname):
os.makedirs(dirname)
if not os.path.exists(fullpath):
cmds.append("curl -s %s -o %s" % (url, fullpath))
return cmds
def _Run(cmd, retries=0):
"""Run the specified command.
If the command fails, and the retries have been exhausted, the program exits
with an appropriate error message.
Args:
cmd: The command to run.
retries: If exit code is non-zero, retry this many times.
"""
# TODO(davidjames): Move this to common library.
for _ in range(retries+1):
result = RunCommand(cmd, shell=True, exit_code=True, error_ok=True)
if result.returncode == 0:
Info("Command succeeded: %s" % cmd)
break
Warning("Command failed: %s" % cmd)
else:
Die("Command failed, exiting: %s" % cmd)
def _RunManyParallel(cmds, retries=0):
"""Run list of provided commands in parallel.
To work around a bug in the multiprocessing module, we use map_async instead
of the usual map function. See http://bugs.python.org/issue9205
Args:
cmds: List of commands to run.
retries: Number of retries per command.
"""
# TODO(davidjames): Move this to common library.
pool = multiprocessing.Pool()
args = []
for cmd in cmds:
args.append((_Run, cmd, retries))
result = pool.map_async(_Apply, args, chunksize=1)
while True:
try:
result.get(60*60)
break
except multiprocessing.TimeoutError:
pass
class PackageBuilder(object):
"""A class for building and extracting tarballs of Chromium OS packages."""
def __init__(self, scripts_dir):
self.scripts_dir = scripts_dir
def BuildTarball(self, options, packages):
"""Build a tarball with the specified packages.
Args:
options: Options object, as output by ParseArgs.
packages: List of packages to build.
"""
board = options.board
# Run setup_board. TODO(davidjames): Integrate the logic used in
# setup_board into chromite.
_Run("%s/setup_board --force --board=%s" % (self.scripts_dir, board))
# Create complete build directory
_Run(self._EmergeBoardCmd(options, packages))
# Archive build directory as tarballs
os.chdir("/build/%s" % board)
cmds = [
"tar -c --wildcards --exclude='usr/lib/debug/*' "
"--exclude='packages/*' * | pigz -c > packages/%s-build.tgz" % board,
"tar -c usr/lib/debug/* | pigz -c > packages/%s-debug.tgz" % board
]
# Run list of commands.
_RunManyParallel(cmds)
def ExtractTarball(self, options, packages):
"""Extract the latest build tarball, then update the specified packages.
Args:
options: Options object, as output by ParseArgs.
packages: List of packages to update.
"""
board = options.board
prefix = _GetLatestPrebuiltPrefix(board)
# If the user doesn't have emerge-${BOARD} setup yet, we need to run
# setup_board. TODO(davidjames): Integrate the logic used in setup_board
# into chromite.
if not os.path.exists("/usr/local/bin/emerge-%s" % board):
_Run("%s/setup_board --force --board=%s" % (self.scripts_dir, board))
# Delete old build directory. This process might take a while, so do it in
# the background.
cmds = []
if os.path.exists("/build/%s" % board):
tempdir = tempfile.mkdtemp()
_Run("mv /build/%s %s" % (board, tempdir))
cmds.append("rm -rf %s" % tempdir)
# Create empty build directory, and chdir into it.
os.makedirs("/build/%s/packages" % board)
os.chdir("/build/%s" % board)
# Download and expand build tarball.
build_url = "%s/%s-build.tgz" % (prefix, board)
cmds.append("curl -s %s | tar -xz" % build_url)
# Download and expand debug tarball (if requested).
if options.debug:
debug_url = "%s/%s-debug.tgz" % (prefix, board)
cmds.append("curl -s %s | tar -xz" % debug_url)
# Download prebuilt packages.
_Run("curl '%s/Packages' -o packages/Packages" % prefix, retries=3)
cmds.extend(_GetPrebuiltDownloadCommands(prefix))
# Run list of commands, with three retries per command, in case the network
# is flaky.
_RunManyParallel(cmds, retries=3)
# Emerge remaining packages.
_Run(self._EmergeBoardCmd(options, packages))
def ParseArgs(self):
"""Parse arguments from the command line using optparse."""
# TODO(davidjames): We should use spec files for this.
default_board = self._GetDefaultBoard()
parser = optparse.OptionParser()
parser.add_option("--board", dest="board", default=default_board,
help="The board to build packages for.")
parser.add_option("--debug", action="store_true", dest="debug",
default=False, help="Include debug symbols.")
parser.add_option("--nowithdev", action="store_false", dest="withdev",
default=True,
help="Don't build useful developer friendly utilities.")
parser.add_option("--nowithtest", action="store_false", dest="withtest",
default=True, help="Build packages required for testing.")
parser.add_option("--nowithfactory", action="store_false",
dest="withfactory", default=True,
help="Build factory installer")
parser.add_option("--nousepkg", action="store_false",
dest="usepkg", default=True,
help="Don't use binary packages.")
parser.add_option("--nousetarball", action="store_false",
dest="usetarball", default=True,
help="Don't use tarball.")
parser.add_option("--nofast", action="store_false", dest="fast",
default=True,
help="Don't merge packages in parallel.")
return parser.parse_args()
def _EmergeBoardCmd(self, options, packages):
"""Calculate board emerge command."""
board = options.board
scripts_dir = self.scripts_dir
emerge_board = "emerge-%s" % board
if options.fast:
emerge_board = "%s/parallel_emerge --board=%s" % (scripts_dir, board)
usepkg = ""
if options.usepkg:
usepkg = "g"
return "%s -uDNv%s %s" % (emerge_board, usepkg, " ".join(packages))
def _GetDefaultBoard(self):
"""Get the default board configured by the user."""
default_board_file = "%s/.default_board" % self.scripts_dir
default_board = None
if os.path.exists(default_board_file):
default_board = file(default_board_file).read().strip()
return default_board
if __name__ == "__main__":
BuildPackages()