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#!/usr/bin/env python
#
# Copyright (c) 2013 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
"""Updates the Chrome reference builds.
Usage:
$ cd /tmp
$ /path/to/update_reference_build.py -r <revision>
$ cd reference_builds/reference_builds
$ gcl change
$ gcl upload <change>
$ gcl commit <change>
"""
import errno
import logging
import optparse
import os
import shutil
import subprocess
import sys
import time
import urllib
import urllib2
import zipfile
class BuildUpdater(object):
_PLATFORM_FILES_MAP = {
'Win': [
'chrome-win32.zip',
'chrome-win32-syms.zip',
'chrome-win32.test/_pyautolib.pyd',
'chrome-win32.test/pyautolib.py',
],
'Mac': [
'chrome-mac.zip',
'chrome-mac.test/_pyautolib.so',
'chrome-mac.test/pyautolib.py',
],
'Linux': [
'chrome-linux.zip',
],
'Linux_x64': [
'chrome-linux.zip',
],
}
_PLATFORM_DEST_MAP = {
'Linux': 'chrome_linux',
'Linux_x64': 'chrome_linux64',
'Win': 'chrome_win',
'Mac': 'chrome_mac',
}
def __init__(self, options):
self._platforms = options.platforms.split(',')
self._revision = int(options.revision)
@staticmethod
def _GetCmdStatusAndOutput(args, cwd=None, shell=False):
"""Executes a subprocess and returns its exit code and output.
Args:
args: A string or a sequence of program arguments.
cwd: If not None, the subprocess's current directory will be changed to
|cwd| before it's executed.
shell: Whether to execute args as a shell command.
Returns:
The tuple (exit code, output).
"""
logging.info(str(args) + ' ' + (cwd or ''))
p = subprocess.Popen(args=args, cwd=cwd, stdout=subprocess.PIPE,
stderr=subprocess.PIPE, shell=shell)
stdout, stderr = p.communicate()
exit_code = p.returncode
if stderr:
logging.critical(stderr)
logging.info(stdout)
return (exit_code, stdout)
def _GetBuildUrl(self, platform, revision, filename):
URL_FMT = ('http://commondatastorage.googleapis.com/'
'chromium-browser-snapshots/%s/%s/%s')
return URL_FMT % (urllib.quote_plus(platform), revision, filename)
def _FindBuildRevision(self, platform, revision, filename):
MAX_REVISIONS_PER_BUILD = 100
for revision_guess in xrange(revision, revision + MAX_REVISIONS_PER_BUILD):
r = urllib2.Request(self._GetBuildUrl(platform, revision_guess, filename))
r.get_method = lambda: 'HEAD'
try:
response = urllib2.urlopen(r)
return revision_guess
except urllib2.HTTPError, err:
if err.code == 404:
time.sleep(.1)
continue
return None
def _DownloadBuilds(self):
for platform in self._platforms:
for f in BuildUpdater._PLATFORM_FILES_MAP[platform]:
output = os.path.join('dl', platform,
'%s_%s_%s' % (platform, self._revision, f))
if os.path.exists(output):
logging.info('%s alread exists, skipping download' % output)
continue
build_revision = self._FindBuildRevision(platform, self._revision, f)
if not build_revision:
logging.critical('Failed to find %s build for r%s\n' % (
platform, self._revision))
sys.exit(1)
dirname = os.path.dirname(output)
if dirname and not os.path.exists(dirname):
os.makedirs(dirname)
url = self._GetBuildUrl(platform, build_revision, f)
logging.info('Downloading %s, saving to %s' % (url, output))
r = urllib2.urlopen(url)
with file(output, 'wb') as f:
f.write(r.read())
def _FetchSvnRepos(self):
if not os.path.exists('reference_builds'):
os.makedirs('reference_builds')
BuildUpdater._GetCmdStatusAndOutput(
['gclient', 'config',
'svn://svn.chromium.org/chrome/trunk/deps/reference_builds'],
'reference_builds')
BuildUpdater._GetCmdStatusAndOutput(
['gclient', 'sync'], 'reference_builds')
def _UnzipFile(self, dl_file, dest_dir):
if not zipfile.is_zipfile(dl_file):
return False
logging.info('Opening %s' % dl_file)
with zipfile.ZipFile(dl_file, 'r') as z:
for content in z.namelist():
dest = os.path.join(dest_dir, content[content.find('/')+1:])
if not os.path.basename(dest):
if not os.path.isdir(dest):
os.makedirs(dest)
continue
with z.open(content) as unzipped_content:
logging.info('Extracting %s to %s (%s)' % (content, dest, dl_file))
with file(dest, 'wb') as dest_file:
dest_file.write(unzipped_content.read())
permissions = z.getinfo(content).external_attr >> 16
if permissions:
os.chmod(dest, permissions)
return True
def _ClearDir(self, dir):
"""Clears all files in |dir| except for hidden files and folders."""
for root, dirs, files in os.walk(dir):
# Skip hidden files and folders (like .svn and .git).
files = [f for f in files if f[0] != '.']
dirs[:] = [d for d in dirs if d[0] != '.']
for f in files:
os.remove(os.path.join(root, f))
def _ExtractBuilds(self):
for platform in self._platforms:
if os.path.exists('tmp_unzip'):
os.path.unlink('tmp_unzip')
dest_dir = os.path.join('reference_builds', 'reference_builds',
BuildUpdater._PLATFORM_DEST_MAP[platform])
self._ClearDir(dest_dir)
for root, _, dl_files in os.walk(os.path.join('dl', platform)):
for dl_file in dl_files:
dl_file = os.path.join(root, dl_file)
if not self._UnzipFile(dl_file, dest_dir):
logging.info('Copying %s to %s' % (dl_file, dest_dir))
shutil.copy(dl_file, dest_dir)
def _SvnAddAndRemove(self):
svn_dir = os.path.join('reference_builds', 'reference_builds')
stat = BuildUpdater._GetCmdStatusAndOutput(['svn', 'stat'], svn_dir)[1]
for line in stat.splitlines():
action, filename = line.split(None, 1)
if action == '?':
BuildUpdater._GetCmdStatusAndOutput(
['svn', 'add', filename], svn_dir)
elif action == '!':
BuildUpdater._GetCmdStatusAndOutput(
['svn', 'delete', filename], svn_dir)
filepath = os.path.join(svn_dir, filename)
if not os.path.isdir(filepath) and os.access(filepath, os.X_OK):
BuildUpdater._GetCmdStatusAndOutput(
['svn', 'propset', 'svn:executable', 'true', filename], svn_dir)
def DownloadAndUpdateBuilds(self):
self._DownloadBuilds()
self._FetchSvnRepos()
self._ExtractBuilds()
self._SvnAddAndRemove()
def ParseOptions(argv):
parser = optparse.OptionParser()
usage = 'usage: %prog <options>'
parser.set_usage(usage)
parser.add_option('-r', dest='revision',
help='Revision to pickup')
parser.add_option('-p', dest='platforms',
default='Win,Mac,Linux,Linux_x64',
help='Comma separated list of platforms to download '
'(as defined by the chromium builders).')
(options, _) = parser.parse_args(argv)
if not options.revision:
logging.critical('Must specify -r\n')
sys.exit(1)
return options
def main(argv):
logging.getLogger().setLevel(logging.DEBUG)
options = ParseOptions(argv)
b = BuildUpdater(options)
b.DownloadAndUpdateBuilds()
logging.info('Successfully updated reference builds. Move to '
'reference_builds/reference_builds and make a change with gcl.')
if __name__ == '__main__':
sys.exit(main(sys.argv))
|
