Allow easy gmerge overrides for board and devserver_url.
Right now, we only use what's in /etc/lsb-release for gmerge
settings. This is fine for a developer, but now with dev_install
fixed in R27, gmerge has become very useful for devs in dev mode.
The /usr/local override specifically has been long wanted.
Also did a little refactoring and fixed some pylint warnings.
BUG=chromium-os:37782
TEST=Ran it on a stumpy Chrome OS machine after dev_install and using
local workstation to build and install screen w/without options.
Change-Id: Ie1bac164bc8a2e3028bfa449bdbeba85e8bec66a
Reviewed-on: https://gerrit.chromium.org/gerrit/43463
Commit-Queue: Chris Sosa <[email protected]>
Reviewed-by: Chris Sosa <[email protected]>
Tested-by: Chris Sosa <[email protected]>
diff --git a/gmerge b/gmerge
index 8a63220..2a321d7 100755
--- a/gmerge
+++ b/gmerge
@@ -19,46 +19,75 @@
import urllib
import urllib2
+LSB_RELEASE_PATH = '/etc/lsb-release'
+STATEFUL_LSB_RELEASE_PATH = '/mnt/stateful_partition/etc/lsb-release'
+
+
+class GMergeParsingException(Exception):
+ """A fatal exception raised when an expected variable is not parsed."""
+
class GMerger(object):
- """emerges a package from the devserver.
+ """emerges a package from the devserver."""
+ def __init__(self, devserver_url, board):
+ self.devserver_url = devserver_url
+ self.board_name = board
- NB: Must be instantiated using with, e.g.:
- with GMerger(open('/etc/lsb-release').readlines()) as merger:
- in order to remount /tmp as executable.
- """
+ @staticmethod
+ def RemountOrChangeRoot(environ):
+ """Remount the root filesystem rw; install into /usr/local if this fails.
- def __init__(self, lsb_release_lines):
- self.lsb_release = self.ParseLsbRelease(lsb_release_lines)
- try:
- self.devkit_url = self.lsb_release['CHROMEOS_DEVSERVER']
- self.board_name = self.lsb_release['CHROMEOS_RELEASE_BOARD']
- except KeyError, e:
- sys.exit('Could not find /etc/lsb_release value: ' + e)
-
- def RemountOrChangeRoot(self, environ):
- """Remount the root filesystem rw; install into /usr/local if this fails."""
+ Args:
+ environ: The environment dictionary.
+ """
rc = subprocess.call(['mount', '-o', 'remount,rw', '/'])
if rc == 0:
return
answer = raw_input(
'Could not mount / as writable. Install into /usr/local? (Y/n)')
- if answer[0] not in 'Yy':
+ if answer and answer[0] not in 'Yy':
sys.exit('Better safe than sorry.')
+
environ['ROOT'] = '/usr/local'
def ParseLsbRelease(self, lsb_release_lines):
- """Convert a list of KEY=VALUE lines to a dictionary."""
- partitioned_lines = [line.rstrip().partition('=')
- for line in lsb_release_lines]
- return dict([(fields[0], fields[2]) for fields in partitioned_lines])
+ """Parses LSB release and set out internal variables accordingly
- def SetupPortageEnvironment(self, environ):
- """Setup portage to use stateful partition and fetch from dev server."""
- binhost_prefix = '%s/static/pkgroot/%s' % (self.devkit_url, self.board_name)
+ Args:
+ lsb_release_lines: a list of key=val lines e.g. the output of opening
+ /etc/lsb-release and using readlines().
+ """
+ lsb_release = dict((k, v) for k, _, v in [line.rstrip().partition('=')
+ for line in lsb_release_lines])
+
+ parsing_msg = ('%(variable)s not set. Please set by using a command line '
+ 'option or overriding in ' + STATEFUL_LSB_RELEASE_PATH)
+ if not self.devserver_url:
+ self.devserver_url = lsb_release['CHROMEOS_DEVSERVER']
+ if not self.devserver_url:
+ raise GMergeParsingException(parsing_msg % dict(
+ variable='CHROMEOS_DEVSERVER'))
+
+ if not self.board_name:
+ self.board_name = lsb_release['CHROMEOS_RELEASE_BOARD']
+ if not self.board_name:
+ raise GMergeParsingException(parsing_msg % dict(
+ variable='CHROMEOS_RELEASE_BOARD'))
+
+ def SetupPortageEnvironment(self, environ, include_masked_files):
+ """Setup portage to use stateful partition and fetch from dev server.
+
+ Args:
+ environ: The environment dictionary to setup.
+ include_masked_files: If true, include masked files in package
+ (e.g. debug symbols).
+ """
+ binhost_prefix = '%s/static/pkgroot/%s' % (self.devserver_url,
+ self.board_name)
binhost = '%s/packages' % binhost_prefix
- if not FLAGS.include_masked_files:
+ if not include_masked_files:
binhost += ' %s/gmerge-packages' % binhost_prefix
+
environ.update({
'PORTDIR': '/usr/local/portage',
'PKGDIR': '/usr/local/portage',
@@ -66,31 +95,40 @@
'PORTAGE_BINHOST': binhost,
'PORTAGE_TMPDIR': '/tmp',
'CONFIG_PROTECT': '-*',
- 'FEATURES': '-sandbox',
- 'ACCEPT_KEYWORDS': 'arm x86 ~arm ~x86',
+ 'FEATURES': '-sandbox -usersandbox',
+ 'ACCEPT_KEYWORDS': 'arm x86 amd64 ~arm ~x86 ~amd64',
'ROOT': os.environ.get('ROOT', '/'),
'PORTAGE_CONFIGROOT': '/usr/local'
})
- def GeneratePackageRequest(self, package_name):
- """Build the POST string that conveys our options to the devserver."""
- post_data = {'board': self.board_name,
- 'deep': FLAGS.deep or '',
+ def RequestPackageBuild(self, package_name, deep, accept_stable, usepkg):
+ """Contacts devserver to request a build.
+
+ Args:
+ package_name: The name of the package to build.
+ deep: Update package and all dependencies.
+ accept_stable: Allow non-workon packages.
+ usepkg: Use currently built binary packages on server.
+ """
+ def GeneratePackageRequest():
+ """Build the POST string that conveys our options to the devserver."""
+ post_data = {'board': self.board_name,
+ 'deep': deep or '',
'pkg': package_name,
'features': os.environ.get('FEATURES'),
'use': os.environ.get('USE'),
- 'accept_stable': FLAGS.accept_stable or '',
- 'usepkg': FLAGS.usepkg or '',
+ 'accept_stable': accept_stable or '',
+ 'usepkg': usepkg or '',
}
- post_data = dict([(key, value) for (key, value) in post_data.iteritems()
+ post_data = dict([(key, value) for (key, value) in post_data.iteritems()
if value is not None])
- return urllib.urlencode(post_data)
+ return urllib.urlencode(post_data)
- def RequestPackageBuild(self, package_name):
- """Contacts devserver to request a build."""
+ print 'Sending build request to', self.devserver_url
try:
- result = urllib2.urlopen(self.devkit_url + '/build',
- data=self.GeneratePackageRequest(package_name))
+ result = urllib2.urlopen(
+ self.devserver_url + '/build',
+ data=GeneratePackageRequest())
print result.read()
result.close()
@@ -100,58 +138,87 @@
except urllib2.URLError, e:
sys.exit('Could not reach devserver. Reason: %s' % e.reason)
+ @staticmethod
+ def EmergePackage(package_name, deep, extra):
+ """Emerges the package from the binhost.
+
+ Args:
+ package_name: The name of the package to build.
+ deep: Update package and all dependencies.
+ extra: Extra arguments to emerge.
+ """
+ # In case the version is the same as the one that's installed, don't re-use
+ # it.
+ print 'Emerging ', package_name
+ shutil.rmtree('/usr/local/portage', ignore_errors=True)
+ shutil.rmtree('/var/cache/edb/binhost', ignore_errors=True)
+
+ emerge_args = ['emerge', '--getbinpkgonly', '--usepkgonly', '--verbose']
+ if deep:
+ emerge_args.extend(['--update', '--deep'])
+
+ if extra:
+ emerge_args.extend(extra.split())
+
+ emerge_args.append(package_name)
+ subprocess.check_call(emerge_args)
+
def main():
- global FLAGS
parser = optparse.OptionParser(usage='usage: %prog [options] package_name')
parser.add_option('--accept_stable',
- action='store_true', dest='accept_stable', default=False,
+ action='store_true', default=False,
help=('Build even if a cros_workon package is not '
'using the live package'))
+ parser.add_option('-b', '--board', default=None,
+ help='Specify a different board to use when building.')
+ parser.add_option('-d', '--devserver_url', default=None,
+ help='Specify a different devserver(binhost) url to use'
+ 'to build and download packages.')
parser.add_option('--include_masked_files',
- action='store_true', dest='include_masked_files',
+ action='store_true',
default=False, help=('Include masked files in package '
'(e.g. debug symbols)'))
parser.add_option('-n', '--usepkg',
- action='store_true', dest='usepkg', default=False,
+ action='store_true', default=False,
help='Use currently built binary packages on server.')
parser.add_option('-D', '--deep',
- action='store_true', dest='deep', default=False,
+ action='store_true', default=False,
help='Update package and all dependencies '
'(requires --usepkg).')
- parser.add_option('-x', '--extra', dest='extra', default='',
+ parser.add_option('-x', '--extra', default='',
help='Extra arguments to pass to emerge command.')
- (FLAGS, remaining_arguments) = parser.parse_args()
+ options, remaining_arguments = parser.parse_args()
if len(remaining_arguments) != 1:
parser.print_help()
sys.exit('Need exactly one package name')
+
# TODO(davidjames): Should we allow --deep without --usepkg? Not sure what
# the desired behavior should be in this case, so disabling the combo for
# now.
- if FLAGS.deep and not FLAGS.usepkg:
+ if options.deep and not options.usepkg:
sys.exit('If using --deep, --usepkg must also be enabled.')
package_name = remaining_arguments[0]
+ subprocess.check_call(['mount', '-o', 'remount,exec', '/tmp'])
try:
- subprocess.check_call(['mount', '-o', 'remount,exec', '/tmp'])
- merger = GMerger(open('/etc/lsb-release').readlines())
- merger.RequestPackageBuild(package_name)
+ etc_lsb_release_lines = open(LSB_RELEASE_PATH).readlines()
+ # Allow overrides from the stateful partition.
+ if os.path.exists(STATEFUL_LSB_RELEASE_PATH):
+ etc_lsb_release_lines += open(STATEFUL_LSB_RELEASE_PATH).readlines()
+ print 'Stateful lsb release file found', STATEFUL_LSB_RELEASE_PATH
- print 'Emerging ', package_name
- merger.SetupPortageEnvironment(os.environ)
+ merger = GMerger(options.devserver_url, options.board)
+ merger.ParseLsbRelease(etc_lsb_release_lines)
+ merger.RequestPackageBuild(package_name, options.deep,
+ options.accept_stable, options.usepkg)
+
+ merger.SetupPortageEnvironment(os.environ, options.include_masked_files)
merger.RemountOrChangeRoot(os.environ)
- subprocess.check_call(['rm', '-rf', '/usr/local/portage',
- '/var/cache/edb/binhost'])
- emerge_args = 'emerge --getbinpkgonly --usepkgonly --verbose'
- if FLAGS.deep:
- emerge_args += ' --update --deep'
- if FLAGS.extra:
- emerge_args += ' ' + FLAGS.extra
- emerge_args += ' ' + package_name
- subprocess.check_call(emerge_args, shell=True)
+ merger.EmergePackage(package_name, options.deep, options.extra)
finally:
subprocess.call(['mount', '-o', 'remount,noexec', '/tmp'])
