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mb.py
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#!/usr/bin/env python3
# Copyright 2020 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.
"""MB - the Meta-Build wrapper around GN.
MB is a wrapper script for GN that can be used to generate build files
for sets of canned configurations and analyze them.
"""
from __future__ import absolute_import
from __future__ import print_function
import argparse
import ast
import collections
import errno
import json
import os
import pipes
import platform
import re
import shutil
import sys
import subprocess
import tempfile
import traceback
import zipfile
if sys.version_info.major == 2:
from urllib2 import urlopen
else:
from urllib.request import urlopen
CHROMIUM_SRC_DIR = os.path.dirname(os.path.dirname(os.path.dirname(
os.path.abspath(__file__))))
sys.path = [os.path.join(CHROMIUM_SRC_DIR, 'build')] + sys.path
sys.path.insert(0, os.path.join(
os.path.dirname(os.path.abspath(__file__)), '..'))
import gn_helpers
from mb.lib import validation
def DefaultVals():
"""Default mixin values"""
return {
'args_file': '',
'gn_args': '',
}
def PruneVirtualEnv():
# Set by VirtualEnv, no need to keep it.
os.environ.pop('VIRTUAL_ENV', None)
# Set by VPython, if scripts want it back they have to set it explicitly.
os.environ.pop('PYTHONNOUSERSITE', None)
# Look for "activate_this.py" in this path, which is installed by VirtualEnv.
# This mechanism is used by vpython as well to sanitize VirtualEnvs from
# $PATH.
os.environ['PATH'] = os.pathsep.join([
p for p in os.environ.get('PATH', '').split(os.pathsep)
if not os.path.isfile(os.path.join(p, 'activate_this.py'))
])
def main(args):
# Prune all evidence of VPython/VirtualEnv out of the environment. This means
# that we 'unwrap' vpython VirtualEnv path/env manipulation. Invocations of
# `python` from GN should never inherit the gn.py's own VirtualEnv. This also
# helps to ensure that generated ninja files do not reference python.exe from
# the VirtualEnv generated from depot_tools' own .vpython file (or lack
# thereof), but instead reference the default python from the PATH.
PruneVirtualEnv()
mbw = MetaBuildWrapper()
return mbw.Main(args)
class MetaBuildWrapper(object):
def __init__(self):
self.chromium_src_dir = CHROMIUM_SRC_DIR
self.default_config = os.path.join(self.chromium_src_dir, 'tools', 'mb',
'mb_config.pyl')
self.default_isolate_map = os.path.join(self.chromium_src_dir, 'testing',
'buildbot', 'gn_isolate_map.pyl')
self.executable = sys.executable
self.platform = sys.platform
self.sep = os.sep
self.args = argparse.Namespace()
self.configs = {}
self.public_artifact_builders = None
self.builder_groups = {}
self.mixins = {}
self.isolate_exe = 'isolate.exe' if self.platform.startswith(
'win') else 'isolate'
self.use_luci_auth = False
self.rts_out_dir = self.PathJoin('gen', 'rts')
self.banned_from_rts = set()
def PostArgsInit(self):
self.use_luci_auth = getattr(self.args, 'luci_auth', False)
if 'config_file' in self.args and self.args.config_file is None:
self.args.config_file = self.default_config
if 'expectations_dir' in self.args and self.args.expectations_dir is None:
self.args.expectations_dir = os.path.join(
os.path.dirname(self.args.config_file), 'mb_config_expectations')
banned_from_rts_map = json.loads(
self.ReadFile(
self.PathJoin(self.chromium_src_dir, 'tools', 'mb',
'rts_banned_suites.json')))
self.banned_from_rts.update(banned_from_rts_map.get('*', set()))
if getattr(self.args, 'builder', None):
self.banned_from_rts.update(
banned_from_rts_map.get(self.args.builder, set()))
def Main(self, args):
self.ParseArgs(args)
self.PostArgsInit()
try:
ret = self.args.func()
if ret != 0:
self.DumpInputFiles()
return ret
except KeyboardInterrupt:
self.Print('interrupted, exiting')
return 130
except Exception:
self.DumpInputFiles()
s = traceback.format_exc()
for l in s.splitlines():
self.Print(l)
return 1
def ParseArgs(self, argv):
def AddCommonOptions(subp):
group = subp.add_mutually_exclusive_group()
group.add_argument(
'-m', '--builder-group',
help='builder group name to look up config from')
subp.add_argument('-b', '--builder',
help='builder name to look up config from')
subp.add_argument('-c', '--config',
help='configuration to analyze')
subp.add_argument('--phase',
help='optional phase name (used when builders '
'do multiple compiles with different '
'arguments in a single build)')
subp.add_argument('-i', '--isolate-map-file', metavar='PATH',
help='path to isolate map file '
'(default is %(default)s)',
default=[],
action='append',
dest='isolate_map_files')
subp.add_argument('-n', '--dryrun', action='store_true',
help='Do a dry run (i.e., do nothing, just print '
'the commands that will run)')
subp.add_argument('-v', '--verbose', action='store_true',
help='verbose logging')
subp.add_argument('--root', help='Path to GN source root')
subp.add_argument('--dotfile', help='Path to GN dotfile')
AddExpansionOptions(subp)
def AddExpansionOptions(subp):
# These are the args needed to expand a config file into the full
# parsed dicts of GN args.
subp.add_argument('-f',
'--config-file',
metavar='PATH',
help=('path to config file '
'(default is mb_config.pyl'))
subp.add_argument('-g', '--goma-dir', help='path to goma directory')
subp.add_argument('--android-version-code',
help='Sets GN arg android_default_version_code')
subp.add_argument('--android-version-name',
help='Sets GN arg android_default_version_name')
subp.add_argument('--use-rts',
action='store_true',
default=False,
help='whether or not to use regression test selection'
' For more info about RTS, please see'
' //docs/testing/regression-test-selection.md')
subp.add_argument('--use-st',
action='store_true',
default=False,
help='whether or not to add filter stable tests during'
' RTS selection')
# TODO(crbug.com/1060857): Remove this once swarming task templates
# support command prefixes.
luci_auth_group = subp.add_mutually_exclusive_group()
luci_auth_group.add_argument(
'--luci-auth',
action='store_true',
help='Run isolated commands under `luci-auth context`.')
luci_auth_group.add_argument(
'--no-luci-auth',
action='store_false',
dest='luci_auth',
help='Do not run isolated commands under `luci-auth context`.')
parser = argparse.ArgumentParser(
prog='mb', description='mb (meta-build) is a python wrapper around GN. '
'See the user guide in '
'//tools/mb/docs/user_guide.md for detailed usage '
'instructions.')
subps = parser.add_subparsers()
subp = subps.add_parser('analyze',
description='Analyze whether changes to a set of '
'files will cause a set of binaries to '
'be rebuilt.')
AddCommonOptions(subp)
subp.add_argument('path',
help='path build was generated into.')
subp.add_argument('input_path',
help='path to a file containing the input arguments '
'as a JSON object.')
subp.add_argument('output_path',
help='path to a file containing the output arguments '
'as a JSON object.')
subp.add_argument('--json-output',
help='Write errors to json.output')
subp.set_defaults(func=self.CmdAnalyze)
subp = subps.add_parser('export',
description='Print out the expanded configuration '
'for each builder as a JSON object.')
AddExpansionOptions(subp)
subp.set_defaults(func=self.CmdExport)
subp = subps.add_parser('get-swarming-command',
description='Get the command needed to run the '
'binary under swarming')
AddCommonOptions(subp)
subp.add_argument('--no-build',
dest='build',
default=True,
action='store_false',
help='Do not build, just isolate')
subp.add_argument('--as-list',
action='store_true',
help='return the command line as a JSON-formatted '
'list of strings instead of single string')
subp.add_argument('path',
help=('path to generate build into (or use).'
' This can be either a regular path or a '
'GN-style source-relative path like '
'//out/Default.'))
subp.add_argument('target', help='ninja target to build and run')
subp.set_defaults(func=self.CmdGetSwarmingCommand)
subp = subps.add_parser('train',
description='Writes the expanded configuration '
'for each builder as JSON files to a configured '
'directory.')
subp.add_argument('-f',
'--config-file',
metavar='PATH',
help='path to config file (default is mb_config.pyl')
subp.add_argument('--expectations-dir',
metavar='PATH',
help='path to dir containing expectation files')
subp.add_argument('-n',
'--dryrun',
action='store_true',
help='Do a dry run (i.e., do nothing, just print '
'the commands that will run)')
subp.add_argument('-v',
'--verbose',
action='store_true',
help='verbose logging')
subp.set_defaults(func=self.CmdTrain)
subp = subps.add_parser('gen',
description='Generate a new set of build files.')
AddCommonOptions(subp)
subp.add_argument('--swarming-targets-file',
help='generates runtime dependencies for targets listed '
'in file as .isolate and .isolated.gen.json files. '
'Targets should be listed by name, separated by '
'newline.')
subp.add_argument('--json-output',
help='Write errors to json.output')
subp.add_argument('--rts-target-change-recall',
type=float,
help='how much safety is needed when selecting tests. '
'0.0 is the lowest and 1.0 is the highest')
subp.add_argument('path',
help='path to generate build into')
subp.set_defaults(func=self.CmdGen)
subp = subps.add_parser('isolate-everything',
description='Generates a .isolate for all targets. '
'Requires that mb.py gen has already '
'been run.')
AddCommonOptions(subp)
subp.set_defaults(func=self.CmdIsolateEverything)
subp.add_argument('path',
help='path build was generated into')
subp = subps.add_parser('isolate',
description='Generate the .isolate files for a '
'given binary.')
AddCommonOptions(subp)
subp.add_argument('--no-build', dest='build', default=True,
action='store_false',
help='Do not build, just isolate')
subp.add_argument('-j', '--jobs', type=int,
help='Number of jobs to pass to ninja')
subp.add_argument('path',
help='path build was generated into')
subp.add_argument('target',
help='ninja target to generate the isolate for')
subp.set_defaults(func=self.CmdIsolate)
subp = subps.add_parser('lookup',
description='Look up the command for a given '
'config or builder.')
AddCommonOptions(subp)
subp.add_argument('--quiet', default=False, action='store_true',
help='Print out just the arguments, '
'do not emulate the output of the gen subcommand.')
subp.add_argument('--recursive', default=False, action='store_true',
help='Lookup arguments from imported files, '
'implies --quiet')
subp.set_defaults(func=self.CmdLookup)
subp = subps.add_parser('try',
description='Try your change on a remote builder')
AddCommonOptions(subp)
subp.add_argument('target',
help='ninja target to build and run')
subp.add_argument('--force', default=False, action='store_true',
help='Force the job to run. Ignores local checkout state;'
' by default, the tool doesn\'t trigger jobs if there are'
' local changes which are not present on Gerrit.')
subp.set_defaults(func=self.CmdTry)
subp = subps.add_parser(
'run', formatter_class=argparse.RawDescriptionHelpFormatter)
subp.description = (
'Build, isolate, and run the given binary with the command line\n'
'listed in the isolate. You may pass extra arguments after the\n'
'target; use "--" if the extra arguments need to include switches.\n'
'\n'
'Examples:\n'
'\n'
' % tools/mb/mb.py run -m chromium.linux -b "Linux Builder" \\\n'
' //out/Default content_browsertests\n'
'\n'
' % tools/mb/mb.py run out/Default content_browsertests\n'
'\n'
' % tools/mb/mb.py run out/Default content_browsertests -- \\\n'
' --test-launcher-retry-limit=0'
'\n'
)
AddCommonOptions(subp)
subp.add_argument('-j', '--jobs', type=int,
help='Number of jobs to pass to ninja')
subp.add_argument('--no-build', dest='build', default=True,
action='store_false',
help='Do not build, just isolate and run')
subp.add_argument('path',
help=('path to generate build into (or use).'
' This can be either a regular path or a '
'GN-style source-relative path like '
'//out/Default.'))
subp.add_argument('-s', '--swarmed', action='store_true',
help='Run under swarming with the default dimensions')
subp.add_argument('-d', '--dimension', default=[], action='append', nargs=2,
dest='dimensions', metavar='FOO bar',
help='dimension to filter on')
subp.add_argument('--tags', default=[], action='append', metavar='FOO:BAR',
help='Tags to assign to the swarming task')
subp.add_argument('--no-default-dimensions', action='store_false',
dest='default_dimensions', default=True,
help='Do not automatically add dimensions to the task')
subp.add_argument('target',
help='ninja target to build and run')
subp.add_argument('extra_args', nargs='*',
help=('extra args to pass to the isolate to run. Use '
'"--" as the first arg if you need to pass '
'switches'))
subp.set_defaults(func=self.CmdRun)
subp = subps.add_parser('validate',
description='Validate the config file.')
AddExpansionOptions(subp)
subp.add_argument('--expectations-dir',
metavar='PATH',
help='path to dir containing expectation files')
subp.add_argument('--skip-dcheck-check',
help='Skip check for dcheck_always_on.',
action='store_true')
subp.set_defaults(func=self.CmdValidate)
subp = subps.add_parser('zip',
description='Generate a .zip containing the files '
'needed for a given binary.')
AddCommonOptions(subp)
subp.add_argument('--no-build', dest='build', default=True,
action='store_false',
help='Do not build, just isolate')
subp.add_argument('-j', '--jobs', type=int,
help='Number of jobs to pass to ninja')
subp.add_argument('path',
help='path build was generated into')
subp.add_argument('target',
help='ninja target to generate the isolate for')
subp.add_argument('zip_path',
help='path to zip file to create')
subp.set_defaults(func=self.CmdZip)
subp = subps.add_parser('help',
help='Get help on a subcommand.')
subp.add_argument(nargs='?', action='store', dest='subcommand',
help='The command to get help for.')
subp.set_defaults(func=self.CmdHelp)
self.args = parser.parse_args(argv)
def DumpInputFiles(self):
def DumpContentsOfFilePassedTo(arg_name, path):
if path and self.Exists(path):
self.Print("\n# To recreate the file passed to %s:" % arg_name)
self.Print("%% cat > %s <<EOF" % path)
contents = self.ReadFile(path)
self.Print(contents)
self.Print("EOF\n%\n")
if getattr(self.args, 'input_path', None):
DumpContentsOfFilePassedTo(
'argv[0] (input_path)', self.args.input_path)
if getattr(self.args, 'swarming_targets_file', None):
DumpContentsOfFilePassedTo(
'--swarming-targets-file', self.args.swarming_targets_file)
def CmdAnalyze(self):
vals = self.Lookup()
return self.RunGNAnalyze(vals)
def CmdExport(self):
obj = self._ToJsonish()
s = json.dumps(obj, sort_keys=True, indent=2, separators=(',', ': '))
self.Print(s)
return 0
def CmdTrain(self):
expectations_dir = self.args.expectations_dir
if not self.Exists(expectations_dir):
self.Print('Expectations dir (%s) does not exist.' % expectations_dir)
return 1
# Removing every expectation file then immediately re-generating them will
# clear out deleted groups.
for f in self.ListDir(expectations_dir):
self.RemoveFile(os.path.join(expectations_dir, f))
obj = self._ToJsonish()
for builder_group, builder in sorted(obj.items()):
expectation_file = os.path.join(expectations_dir, builder_group + '.json')
json_s = json.dumps(builder,
indent=2,
sort_keys=True,
separators=(',', ': '))
self.WriteFile(expectation_file, json_s)
return 0
def RtsSelect(self):
model_dir = self.PathJoin(
self.chromium_src_dir, 'testing', 'rts', self._CipdPlatform())
exe = self.PathJoin(model_dir, 'rts-chromium')
if self.platform == 'win32':
exe += '.exe'
args = [
exe, 'select',
'-model-dir', model_dir, \
'-out', self.PathJoin(self.ToAbsPath(self.args.path), self.rts_out_dir),
'-checkout', self.chromium_src_dir,
]
if self.args.rts_target_change_recall:
if (self.args.rts_target_change_recall < 0
or self.args.rts_target_change_recall > 1):
self.WriteFailureAndRaise(
'rts-target-change-recall must be between (0 and 1]', None)
args += ['-target-change-recall', str(self.args.rts_target_change_recall)]
ret, _, _ = self.Run(args, force_verbose=True)
if ret != 0:
self.WriteFailureAndRaise(err, None)
def CmdGen(self):
if self.args.use_rts:
self.RtsSelect()
vals = self.Lookup()
return self.RunGNGen(vals)
def CmdGetSwarmingCommand(self):
vals = self.GetConfig()
command, _ = self.GetSwarmingCommand(self.args.target, vals)
if self.args.as_list:
self.Print(json.dumps(command))
else:
self.Print(' '.join(command))
return 0
def CmdIsolateEverything(self):
vals = self.Lookup()
return self.RunGNGenAllIsolates(vals)
def CmdHelp(self):
if self.args.subcommand:
self.ParseArgs([self.args.subcommand, '--help'])
else:
self.ParseArgs(['--help'])
def CmdIsolate(self):
vals = self.GetConfig()
if not vals:
return 1
if self.args.build:
ret = self.Build(self.args.target)
if ret != 0:
return ret
return self.RunGNIsolate(vals)
def CmdLookup(self):
vals = self.Lookup()
_, gn_args = self.GNArgs(vals, expand_imports=self.args.recursive)
if self.args.quiet or self.args.recursive:
self.Print(gn_args, end='')
else:
cmd = self.GNCmd('gen', '_path_')
self.Print('\nWriting """\\\n%s""" to _path_/args.gn.\n' % gn_args)
self.PrintCmd(cmd)
return 0
def CmdTry(self):
ninja_target = self.args.target
if ninja_target.startswith('//'):
self.Print("Expected a ninja target like base_unittests, got %s" % (
ninja_target))
return 1
_, out, _ = self.Run(['git', 'cl', 'diff', '--stat'], force_verbose=False)
if out:
self.Print("Your checkout appears to local changes which are not uploaded"
" to Gerrit. Changes must be committed and uploaded to Gerrit"
" to be tested using this tool.")
if not self.args.force:
return 1
json_path = self.PathJoin(self.chromium_src_dir, 'out.json')
try:
ret, out, err = self.Run(
['git', 'cl', 'issue', '--json=out.json'], force_verbose=False)
if ret != 0:
self.Print(
"Unable to fetch current issue. Output and error:\n%s\n%s" % (
out, err
))
return ret
with open(json_path) as f:
issue_data = json.load(f)
finally:
if self.Exists(json_path):
os.unlink(json_path)
if not issue_data['issue']:
self.Print("Missing issue data. Upload your CL to Gerrit and try again.")
return 1
class LedException(Exception):
pass
def run_cmd(previous_res, cmd):
if self.args.verbose:
self.Print(('| ' if previous_res else '') + ' '.join(cmd))
res, out, err = self.Call(cmd, stdin=previous_res)
if res != 0:
self.Print("Err while running '%s'. Output:\n%s\nstderr:\n%s" % (
' '.join(cmd), out, err))
raise LedException()
return out
try:
result = LedResult(None, run_cmd).then(
# TODO(martiniss): maybe don't always assume the bucket?
'led', 'get-builder', 'luci.chromium.try:%s' % self.args.builder).then(
'led', 'edit', '-r', 'chromium_trybot_experimental',
'-p', 'tests=["%s"]' % ninja_target).then(
'led', 'edit-system', '--tag=purpose:user-debug-mb-try').then(
'led', 'edit-cr-cl', issue_data['issue_url']).then(
'led', 'launch').result
except LedException:
self.Print("If this is an unexpected error message, please file a bug"
" with https://goto.google.com/mb-try-bug")
raise
swarming_data = json.loads(result)['swarming']
self.Print("Launched task at https://%s/task?id=%s" % (
swarming_data['host_name'], swarming_data['task_id']))
def CmdRun(self):
vals = self.GetConfig()
if not vals:
return 1
if self.args.build:
self.Print('')
ret = self.Build(self.args.target)
if ret:
return ret
self.Print('')
ret = self.RunGNIsolate(vals)
if ret:
return ret
self.Print('')
if self.args.swarmed:
cmd, _ = self.GetSwarmingCommand(self.args.target, vals)
return self._RunUnderSwarming(self.args.path, self.args.target, cmd)
return self._RunLocallyIsolated(self.args.path, self.args.target)
def CmdZip(self):
ret = self.CmdIsolate()
if ret:
return ret
zip_dir = None
try:
zip_dir = self.TempDir()
remap_cmd = [
self.PathJoin(self.chromium_src_dir, 'tools', 'luci-go',
self.isolate_exe), 'remap', '-i',
self.PathJoin(self.args.path, self.args.target + '.isolate'),
'-outdir', zip_dir
]
ret, _, _ = self.Run(remap_cmd)
if ret:
return ret
zip_path = self.args.zip_path
with zipfile.ZipFile(
zip_path, 'w', zipfile.ZIP_DEFLATED, allowZip64=True) as fp:
for root, _, files in os.walk(zip_dir):
for filename in files:
path = self.PathJoin(root, filename)
fp.write(path, self.RelPath(path, zip_dir))
return 0
finally:
if zip_dir:
self.RemoveDirectory(zip_dir)
def _RunUnderSwarming(self, build_dir, target, isolate_cmd):
cas_instance = 'chromium-swarm'
swarming_server = 'chromium-swarm.appspot.com'
# TODO(dpranke): Look up the information for the target in
# the //testing/buildbot.json file, if possible, so that we
# can determine the isolate target, command line, and additional
# swarming parameters, if possible.
#
# TODO(dpranke): Also, add support for sharding and merging results.
dimensions = []
for k, v in self._DefaultDimensions() + self.args.dimensions:
dimensions += ['-d', '%s=%s' % (k, v)]
archive_json_path = self.ToSrcRelPath(
'%s/%s.archive.json' % (build_dir, target))
cmd = [
self.PathJoin(self.chromium_src_dir, 'tools', 'luci-go',
self.isolate_exe),
'archive',
'-i',
self.ToSrcRelPath('%s/%s.isolate' % (build_dir, target)),
'-cas-instance',
cas_instance,
'-dump-json',
archive_json_path,
]
# Talking to the isolateserver may fail because we're not logged in.
# We trap the command explicitly and rewrite the error output so that
# the error message is actually correct for a Chromium check out.
self.PrintCmd(cmd)
ret, out, _ = self.Run(cmd, force_verbose=False)
if ret:
self.Print(' -> returned %d' % ret)
if out:
self.Print(out, end='')
return ret
try:
archive_hashes = json.loads(self.ReadFile(archive_json_path))
except Exception:
self.Print(
'Failed to read JSON file "%s"' % archive_json_path, file=sys.stderr)
return 1
try:
cas_digest = archive_hashes[target]
except Exception:
self.Print(
'Cannot find hash for "%s" in "%s", file content: %s' %
(target, archive_json_path, archive_hashes),
file=sys.stderr)
return 1
tags = ['-tag=%s' % tag for tag in self.args.tags]
try:
json_dir = self.TempDir()
json_file = self.PathJoin(json_dir, 'task.json')
cmd = [
self.PathJoin('tools', 'luci-go', 'swarming'),
'trigger',
'-digest',
cas_digest,
'-server',
swarming_server,
'-tag=purpose:user-debug-mb',
'-relative-cwd',
self.ToSrcRelPath(build_dir),
'-dump-json',
json_file,
] + tags + dimensions + ['--'] + list(isolate_cmd)
if self.args.extra_args:
cmd += self.args.extra_args
self.Print('')
ret, _, _ = self.Run(cmd, force_verbose=True, buffer_output=False)
if ret:
return ret
task_json = self.ReadFile(json_file)
task_id = json.loads(task_json)["tasks"][0]['task_id']
collect_output = self.PathJoin(json_dir, 'collect_output.json')
cmd = [
self.PathJoin('tools', 'luci-go', 'swarming'),
'collect',
'-server',
swarming_server,
'-task-output-stdout=console',
'-task-summary-json',
collect_output,
task_id,
]
ret, _, _ = self.Run(cmd, force_verbose=True, buffer_output=False)
if ret != 0:
return ret
collect_json = json.loads(self.ReadFile(collect_output))
# The exit_code field is not included if the task was successful.
ret = collect_json.get(task_id, {}).get('results', {}).get('exit_code', 0)
finally:
if json_dir:
self.RemoveDirectory(json_dir)
return ret
def _RunLocallyIsolated(self, build_dir, target):
cmd = [
self.PathJoin(self.chromium_src_dir, 'tools', 'luci-go',
self.isolate_exe),
'run',
'-i',
self.ToSrcRelPath('%s/%s.isolate' % (build_dir, target)),
]
if self.args.extra_args:
cmd += ['--'] + self.args.extra_args
ret, _, _ = self.Run(cmd, force_verbose=True, buffer_output=False)
return ret
def _DefaultDimensions(self):
if not self.args.default_dimensions:
return []
# This code is naive and just picks reasonable defaults per platform.
if self.platform == 'darwin':
os_dim = ('os', 'Mac-10.13')
elif self.platform.startswith('linux'):
os_dim = ('os', 'Ubuntu-16.04')
elif self.platform == 'win32':
os_dim = ('os', 'Windows-10')
else:
raise MBErr('unrecognized platform string "%s"' % self.platform)
return [('pool', 'chromium.tests'),
('cpu', 'x86-64'),
os_dim]
def _ToJsonish(self):
"""Dumps the config file into a json-friendly expanded dict.
Returns:
A dict with builder group -> builder -> all GN args mapping.
"""
self.ReadConfigFile(self.args.config_file)
obj = {}
for builder_group, builders in self.builder_groups.items():
obj[builder_group] = {}
for builder in builders:
config = self.builder_groups[builder_group][builder]
if not config:
continue
def flatten(config):
flattened_config = FlattenConfig(self.configs, self.mixins, config)
if flattened_config['gn_args'] == 'error':
return None
args = {'gn_args': gn_helpers.FromGNArgs(flattened_config['gn_args'])}
if flattened_config.get('args_file'):
args['args_file'] = flattened_config['args_file']
return args
if isinstance(config, dict):
# This is a 'phased' builder. Each key in the config is a different
# phase of the builder.
args = {}
for k, v in config.items():
flattened = flatten(v)
if flattened is None:
continue
args[k] = flattened
elif config.startswith('//'):
args = config
else:
args = flatten(config)
if args is None:
continue
obj[builder_group][builder] = args
return obj
def CmdValidate(self, print_ok=True):
errs = []
self.ReadConfigFile(self.args.config_file)
# Build a list of all of the configs referenced by builders.
all_configs = validation.GetAllConfigs(self.builder_groups)
# Check that every referenced args file or config actually exists.
for config, loc in all_configs.items():
if config.startswith('//'):
if not self.Exists(self.ToAbsPath(config)):
errs.append('Unknown args file "%s" referenced from "%s".' %
(config, loc))
elif not config in self.configs:
errs.append('Unknown config "%s" referenced from "%s".' %
(config, loc))
# Check that every config and mixin is referenced.
validation.CheckAllConfigsAndMixinsReferenced(errs, all_configs,
self.configs, self.mixins)
if self.args.config_file == self.default_config:
validation.EnsureNoProprietaryMixins(errs, self.builder_groups,
self.configs, self.mixins)
validation.CheckDuplicateConfigs(errs, self.configs, self.mixins,
self.builder_groups, FlattenConfig)
if not self.args.skip_dcheck_check:
self._ValidateEach(errs, validation.CheckDebugDCheckOrOfficial)
if errs:
raise MBErr(('mb config file %s has problems:\n ' %
self.args.config_file) + '\n '.join(errs))
expectations_dir = self.args.expectations_dir
# TODO(crbug.com/1117577): Force all versions of mb_config.pyl to have
# expectations. For now, just ignore those that don't have them.
if self.Exists(expectations_dir):
jsonish_blob = self._ToJsonish()
if not validation.CheckExpectations(self, jsonish_blob, expectations_dir):
raise MBErr("Expectations out of date. Please run 'mb.py train'.")
if print_ok:
self.Print('mb config file %s looks ok.' % self.args.config_file)
return 0
def _ValidateEach(self, errs, validate):
"""Checks a validate function against every builder config.
This loops over all the builders in the config file, invoking the
validate function against the full set of GN args. Any errors found
should be appended to the errs list passed in; the validation
function signature is
validate(errs:list, gn_args:dict, builder_group:str, builder:str,
phase:(str|None))"""
for builder_group, builders in self.builder_groups.items():
for builder, config in builders.items():
if isinstance(config, dict):
for phase, phase_config in config.items():
vals = FlattenConfig(self.configs, self.mixins, phase_config)
if vals['gn_args'] == 'error':
continue
try:
parsed_gn_args, _ = self.GNArgs(vals, expand_imports=True)
except IOError:
# The builder must use an args file that was not checked out or
# generated, so we should just ignore it.
parsed_gn_args, _ = self.GNArgs(vals, expand_imports=False)
validate(errs, parsed_gn_args, builder_group, builder, phase)
else:
vals = FlattenConfig(self.configs, self.mixins, config)
if vals['gn_args'] == 'error':
continue
try:
parsed_gn_args, _ = self.GNArgs(vals, expand_imports=True)
except IOError:
# The builder must use an args file that was not checked out or
# generated, so we should just ignore it.
parsed_gn_args, _ = self.GNArgs(vals, expand_imports=False)
validate(errs, parsed_gn_args, builder_group, builder, phase=None)
def GetConfig(self):
build_dir = self.args.path
vals = DefaultVals()
if self.args.builder or self.args.builder_group or self.args.config:
vals = self.Lookup()
# Re-run gn gen in order to ensure the config is consistent with the
# build dir.
self.RunGNGen(vals)
return vals
toolchain_path = self.PathJoin(self.ToAbsPath(build_dir),
'toolchain.ninja')
if not self.Exists(toolchain_path):
self.Print('Must either specify a path to an existing GN build dir '
'or pass in a -m/-b pair or a -c flag to specify the '
'configuration')
return {}
vals['gn_args'] = self.GNArgsFromDir(build_dir)
return vals
def GNArgsFromDir(self, build_dir):
args_contents = ""
gn_args_path = self.PathJoin(self.ToAbsPath(build_dir), 'args.gn')
if self.Exists(gn_args_path):
args_contents = self.ReadFile(gn_args_path)
# Handle any .gni file imports, e.g. the ones used by CrOS. This should
# be automatically handled by gn_helpers.FromGNArgs (via its call to
# gn_helpers.GNValueParser.ReplaceImports), but that currently breaks
# mb_unittest since it mocks out file reads itself instead of using
# pyfakefs. This results in gn_helpers trying to read a non-existent file.
# The implementation of ReplaceImports here can be removed once the
# unittests use pyfakefs.
def ReplaceImports(input_contents):
output_contents = ''
for l in input_contents.splitlines(True):
if not l.strip().startswith('#') and 'import(' in l:
import_file = l.split('"', 2)[1]
import_file = self.ToAbsPath(import_file)
imported_contents = self.ReadFile(import_file)
output_contents += ReplaceImports(imported_contents) + '\n'
else:
output_contents += l
return output_contents
args_contents = ReplaceImports(args_contents)
args_dict = gn_helpers.FromGNArgs(args_contents)
# Re-add the quotes around strings so they show up as they would in the
# args.gn file.
for k, v in args_dict.items():
if isinstance(v, str):
args_dict[k] = '"%s"' % v
return ' '.join(['%s=%s' % (k, v) for (k, v) in args_dict.items()])
def Lookup(self):
self.ReadConfigFile(self.args.config_file)
try:
config = self.ConfigFromArgs()
except MBErr as e:
# TODO(crbug.com/912681) While iOS bots are migrated to use the
# Chromium recipe, we want to ensure that we're checking MB's
# configurations first before going to iOS.
# This is to be removed once the migration is complete.
vals = self.ReadIOSBotConfig()
if not vals:
raise e
return vals
# TODO(crbug.com/912681) Some iOS bots have a definition, with ios_error
# as an indicator that it's incorrect. We utilize this to check the
# iOS JSON instead, and error out if there exists no definition at all.
# This is to be removed once the migration is complete.
if config == 'ios_error':
vals = self.ReadIOSBotConfig()
if not vals: