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v8/tools/mb/mb.py
Daniel Dromboski 8807f0ad48 [tools] More Python 3 compatibility fixes 
These should all be forward/backward compatible with Python 2/Python 3.

[tools] Tweak statusfile.py for Python 3

.iteritems() does not exist in Python 3, only .items().

(While .iteritems() was meant to be an optimization over .items()
in Python 2, .items() should work fine, and it is forward/backward
compatible.)


[tools] Fix another Python 3 issue in mb.py

sys.platform used to return e.g. 'linux2', which is 'linux' plus
whatever the first digit of `uname -r` was when Python was built.
As of Python 3.3, it always returns just 'linux' for Linux OSes.
Use `sys.platform.startswith('linux')` for forward/backward
compatibility.


[tools] Make base_runner.py Python 3 compatible

dict.keys() returns a dict_keys in Python 3, whereas it
used to return a simple array. list() is forward/backward
compatible with identical results on Python 2/3 (returns array).

(Tested on Linux x64, trying to recreate NodeJS's CI workflow.)


[tools] Make tools/dev/v8gen.py work with Python 3

dict.keys() returns a dict_keys in Python 3, whereas it
used to return a simple array. list() is forward/backward
compatible with identical results on Python 2/3 (returns array).

Comparing a None-type value numerically used to result in the
None-type value always being considered "less than" the thing
it is compared to. As of Python 3, numerically comparing against
None or None-typed values results in an error. Check if a value
is truthy before numerically comparing it, for forward/backward
compatibility.

print() used to transparently decode byte strings in Python 2.
In Python 3, they must be explicitly decoded first.

(Tested on Linux 64-bit, trying to recreate NodeJS's CI workflow.)

Bug: v8:9871
Change-Id: I059bf98577a67649bbe7ec49848989d468da96b0
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2867270
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#74369}
2021-05-05 08:24:36 +00:00

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#!/usr/bin/env python
# Copyright 2016 the V8 project authors. All rights reserved.
# Copyright 2015 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.
"""
# for py2/py3 compatibility
from __future__ import print_function
import argparse
import ast
import errno
import json
import os
import pipes
import platform
import pprint
import re
import shutil
import sys
import subprocess
import tempfile
import traceback
# for py2/py3 compatibility
try:
from urllib.parse import quote
except ImportError:
from urllib2 import quote
try:
from urllib.request import urlopen
except ImportError:
from urllib2 import urlopen
from collections import OrderedDict
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
import gn_helpers
try:
cmp # Python 2
except NameError: # Python 3
def cmp(x, y): # pylint: disable=redefined-builtin
return (x > y) - (x < y)
def main(args):
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, 'infra', 'mb',
'mb_config.pyl')
self.default_isolate_map = os.path.join(self.chromium_src_dir, 'infra',
'mb', 'gn_isolate_map.pyl')
self.executable = sys.executable
self.platform = sys.platform
self.sep = os.sep
self.args = argparse.Namespace()
self.configs = {}
self.luci_tryservers = {}
self.builder_groups = {}
self.mixins = {}
self.isolate_exe = 'isolate.exe' if self.platform.startswith(
'win') else 'isolate'
def Main(self, args):
self.ParseArgs(args)
try:
ret = self.args.func()
if ret:
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):
subp.add_argument('-b', '--builder',
help='builder name to look up config from')
subp.add_argument(
'-m', '--builder-group',
help='builder group 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('-f', '--config-file', metavar='PATH',
default=self.default_config,
help='path to config file '
'(default is %(default)s)')
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('-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('-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')
parser = argparse.ArgumentParser(prog='mb')
subps = parser.add_subparsers()
subp = subps.add_parser('analyze',
help='analyze whether changes to a set of files '
'will cause a set of binaries to be rebuilt.')
AddCommonOptions(subp)
subp.add_argument('path', nargs=1,
help='path build was generated into.')
subp.add_argument('input_path', nargs=1,
help='path to a file containing the input arguments '
'as a JSON object.')
subp.add_argument('output_path', nargs=1,
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',
help='print out the expanded configuration for'
'each builder as a JSON object')
subp.add_argument('-f', '--config-file', metavar='PATH',
default=self.default_config,
help='path to config file (default is %(default)s)')
subp.add_argument('-g', '--goma-dir',
help='path to goma directory')
subp.set_defaults(func=self.CmdExport)
subp = subps.add_parser('gen',
help='generate a new set of build files')
AddCommonOptions(subp)
subp.add_argument('--swarming-targets-file',
help='save runtime dependencies for targets listed '
'in file.')
subp.add_argument('--json-output',
help='Write errors to json.output')
subp.add_argument('path', nargs=1,
help='path to generate build into')
subp.set_defaults(func=self.CmdGen)
subp = subps.add_parser('isolate',
help='generate the .isolate files for a given'
'binary')
AddCommonOptions(subp)
subp.add_argument('path', nargs=1,
help='path build was generated into')
subp.add_argument('target', nargs=1,
help='ninja target to generate the isolate for')
subp.set_defaults(func=self.CmdIsolate)
subp = subps.add_parser('lookup',
help='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(
'run',
help='build and run the isolated version of a '
'binary',
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', dest='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', nargs=1,
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('--no-default-dimensions', action='store_false',
dest='default_dimensions', default=True,
help='Do not automatically add dimensions to the task')
subp.add_argument('target', nargs=1,
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',
help='validate the config file')
subp.add_argument('-f', '--config-file', metavar='PATH',
default=self.default_config,
help='path to config file (default is %(default)s)')
subp.set_defaults(func=self.CmdValidate)
subp = subps.add_parser('gerrit-buildbucket-config',
help='Print buildbucket.config for gerrit '
'(see MB user guide)')
subp.add_argument('-f', '--config-file', metavar='PATH',
default=self.default_config,
help='path to config file (default is %(default)s)')
subp.set_defaults(func=self.CmdBuildbucket)
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[0])
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):
self.ReadConfigFile()
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
if isinstance(config, dict):
args = {k: self.FlattenConfig(v)['gn_args']
for k, v in config.items()}
elif config.startswith('//'):
args = config
else:
args = self.FlattenConfig(config)['gn_args']
if 'error' in args:
continue
obj[builder_group][builder] = args
# Dump object and trim trailing whitespace.
s = '\n'.join(l.rstrip() for l in
json.dumps(obj, sort_keys=True, indent=2).splitlines())
self.Print(s)
return 0
def CmdGen(self):
vals = self.Lookup()
return self.RunGNGen(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
return self.RunGNIsolate()
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)
env = None
self.PrintCmd(cmd, env)
return 0
def CmdRun(self):
vals = self.GetConfig()
if not vals:
return 1
build_dir = self.args.path[0]
target = self.args.target[0]
if self.args.build:
ret = self.Build(target)
if ret:
return ret
ret = self.RunGNIsolate()
if ret:
return ret
if self.args.swarmed:
return self._RunUnderSwarming(build_dir, target)
else:
return self._RunLocallyIsolated(build_dir, target)
def _RunUnderSwarming(self, build_dir, target):
# 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.
# TODO(liviurau): While this seems to not be used in V8 yet, we need to add
# a switch for internal try-bots, since they need to use 'chrome-swarming'
cas_instance = 'chromium-swarm'
dimensions = []
for k, v in self._DefaultDimensions() + self.args.dimensions:
dimensions += ['-d', 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,
]
ret, _, _ = self.Run(cmd, force_verbose=False)
if ret:
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
cmd = [
self.executable,
self.PathJoin('tools', 'swarming_client', 'swarming.py'),
'run',
'-digests', cas_digest,
'-S', 'chromium-swarm.appspot.com',
] + dimensions
if self.args.extra_args:
cmd += ['--'] + self.args.extra_args
ret, _, _ = self.Run(cmd, force_verbose=True, buffer_output=False)
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-10.12')
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', 'Chrome'),
('cpu', 'x86-64'),
os_dim]
def CmdBuildbucket(self):
self.ReadConfigFile()
self.Print('# This file was generated using '
'"tools/mb/mb.py gerrit-buildbucket-config".')
for luci_tryserver in sorted(self.luci_tryservers):
self.Print('[bucket "luci.%s"]' % luci_tryserver)
for bot in sorted(self.luci_tryservers[luci_tryserver]):
self.Print('\tbuilder = %s' % bot)
for builder_group in sorted(self.builder_groups):
if builder_group.startswith('tryserver.'):
self.Print('[bucket "builder_group.%s"]' % builder_group)
for bot in sorted(self.builder_groups[builder_group]):
self.Print('\tbuilder = %s' % bot)
return 0
def CmdValidate(self, print_ok=True):
errs = []
# Read the file to make sure it parses.
self.ReadConfigFile()
# Build a list of all of the configs referenced by builders.
all_configs = {}
for builder_group in self.builder_groups:
for config in self.builder_groups[builder_group].values():
if isinstance(config, dict):
for c in config.values():
all_configs[c] = builder_group
else:
all_configs[config] = builder_group
# 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 actual config is actually referenced.
for config in self.configs:
if not config in all_configs:
errs.append('Unused config "%s".' % config)
# Figure out the whole list of mixins, and check that every mixin
# listed by a config or another mixin actually exists.
referenced_mixins = set()
for config, mixins in self.configs.items():
for mixin in mixins:
if not mixin in self.mixins:
errs.append('Unknown mixin "%s" referenced by config "%s".' %
(mixin, config))
referenced_mixins.add(mixin)
for mixin in self.mixins:
for sub_mixin in self.mixins[mixin].get('mixins', []):
if not sub_mixin in self.mixins:
errs.append('Unknown mixin "%s" referenced by mixin "%s".' %
(sub_mixin, mixin))
referenced_mixins.add(sub_mixin)
# Check that every mixin defined is actually referenced somewhere.
for mixin in self.mixins:
if not mixin in referenced_mixins:
errs.append('Unreferenced mixin "%s".' % mixin)
if errs:
raise MBErr(('mb config file %s has problems:' % self.args.config_file) +
'\n ' + '\n '.join(errs))
if print_ok:
self.Print('mb config file %s looks ok.' % self.args.config_file)
return 0
def GetConfig(self):
build_dir = self.args.path[0]
vals = self.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)
gn_args = []
for l in args_contents.splitlines():
fields = l.split(' ')
name = fields[0]
val = ' '.join(fields[2:])
gn_args.append('%s=%s' % (name, val))
return ' '.join(gn_args)
def Lookup(self):
vals = self.ReadIOSBotConfig()
if not vals:
self.ReadConfigFile()
config = self.ConfigFromArgs()
if config.startswith('//'):
if not self.Exists(self.ToAbsPath(config)):
raise MBErr('args file "%s" not found' % config)
vals = self.DefaultVals()
vals['args_file'] = config
else:
if not config in self.configs:
raise MBErr('Config "%s" not found in %s' %
(config, self.args.config_file))
vals = self.FlattenConfig(config)
return vals
def ReadIOSBotConfig(self):
if not self.args.builder_group or not self.args.builder:
return {}
path = self.PathJoin(self.chromium_src_dir, 'ios', 'build', 'bots',
self.args.builder_group, self.args.builder + '.json')
if not self.Exists(path):
return {}
contents = json.loads(self.ReadFile(path))
gn_args = ' '.join(contents.get('gn_args', []))
vals = self.DefaultVals()
vals['gn_args'] = gn_args
return vals
def ReadConfigFile(self):
if not self.Exists(self.args.config_file):
raise MBErr('config file not found at %s' % self.args.config_file)
try:
contents = ast.literal_eval(self.ReadFile(self.args.config_file))
except SyntaxError as e:
raise MBErr('Failed to parse config file "%s": %s' %
(self.args.config_file, e))
self.configs = contents['configs']
self.luci_tryservers = contents.get('luci_tryservers', {})
self.builder_groups = contents['builder_groups']
self.mixins = contents['mixins']
def ReadIsolateMap(self):
if not self.args.isolate_map_files:
self.args.isolate_map_files = [self.default_isolate_map]
for f in self.args.isolate_map_files:
if not self.Exists(f):
raise MBErr('isolate map file not found at %s' % f)
isolate_maps = {}
for isolate_map in self.args.isolate_map_files:
try:
isolate_map = ast.literal_eval(self.ReadFile(isolate_map))
duplicates = set(isolate_map).intersection(isolate_maps)
if duplicates:
raise MBErr(
'Duplicate targets in isolate map files: %s.' %
', '.join(duplicates))
isolate_maps.update(isolate_map)
except SyntaxError as e:
raise MBErr(
'Failed to parse isolate map file "%s": %s' % (isolate_map, e))
return isolate_maps
def ConfigFromArgs(self):
if self.args.config:
if self.args.builder_group or self.args.builder:
raise MBErr(
'Can not specific both -c/--config and -m/--builder-group or '
'-b/--builder')
return self.args.config
if not self.args.builder_group or not self.args.builder:
raise MBErr('Must specify either -c/--config or '
'(-m/--builder-group and -b/--builder)')
if not self.args.builder_group in self.builder_groups:
raise MBErr('Builder groups name "%s" not found in "%s"' %
(self.args.builder_group, self.args.config_file))
if not self.args.builder in self.builder_groups[self.args.builder_group]:
raise MBErr(
'Builder name "%s" not found under builder_groups[%s] in "%s"' %
(self.args.builder, self.args.builder_group, self.args.config_file))
config = self.builder_groups[self.args.builder_group][self.args.builder]
if isinstance(config, dict):
if self.args.phase is None:
raise MBErr('Must specify a build --phase for %s on %s' %
(self.args.builder, self.args.builder_group))
phase = str(self.args.phase)
if phase not in config:
raise MBErr('Phase %s doesn\'t exist for %s on %s' %
(phase, self.args.builder, self.args.builder_group))
return config[phase]
if self.args.phase is not None:
raise MBErr('Must not specify a build --phase for %s on %s' %
(self.args.builder, self.args.builder_group))
return config
def FlattenConfig(self, config):
mixins = self.configs[config]
vals = self.DefaultVals()
visited = []
self.FlattenMixins(mixins, vals, visited)
return vals
def DefaultVals(self):
return {
'args_file': '',
'cros_passthrough': False,
'gn_args': '',
}
def FlattenMixins(self, mixins, vals, visited):
for m in mixins:
if m not in self.mixins:
raise MBErr('Unknown mixin "%s"' % m)
visited.append(m)
mixin_vals = self.mixins[m]
if 'cros_passthrough' in mixin_vals:
vals['cros_passthrough'] = mixin_vals['cros_passthrough']
if 'args_file' in mixin_vals:
if vals['args_file']:
raise MBErr('args_file specified multiple times in mixins '
'for %s on %s' %
(self.args.builder, self.args.builder_group))
vals['args_file'] = mixin_vals['args_file']
if 'gn_args' in mixin_vals:
if vals['gn_args']:
vals['gn_args'] += ' ' + mixin_vals['gn_args']
else:
vals['gn_args'] = mixin_vals['gn_args']
if 'mixins' in mixin_vals:
self.FlattenMixins(mixin_vals['mixins'], vals, visited)
return vals
def RunGNGen(self, vals, compute_grit_inputs_for_analyze=False):
build_dir = self.args.path[0]
cmd = self.GNCmd('gen', build_dir, '--check')
gn_args = self.GNArgs(vals)
if compute_grit_inputs_for_analyze:
gn_args += ' compute_grit_inputs_for_analyze=true'
# Since GN hasn't run yet, the build directory may not even exist.
self.MaybeMakeDirectory(self.ToAbsPath(build_dir))
gn_args_path = self.ToAbsPath(build_dir, 'args.gn')
self.WriteFile(gn_args_path, gn_args, force_verbose=True)
swarming_targets = []
if getattr(self.args, 'swarming_targets_file', None):
# We need GN to generate the list of runtime dependencies for
# the compile targets listed (one per line) in the file so
# we can run them via swarming. We use gn_isolate_map.pyl to convert
# the compile targets to the matching GN labels.
path = self.args.swarming_targets_file
if not self.Exists(path):
self.WriteFailureAndRaise('"%s" does not exist' % path,
output_path=None)
contents = self.ReadFile(path)
swarming_targets = set(contents.splitlines())
isolate_map = self.ReadIsolateMap()
err, labels = self.MapTargetsToLabels(isolate_map, swarming_targets)
if err:
raise MBErr(err)
gn_runtime_deps_path = self.ToAbsPath(build_dir, 'runtime_deps')
self.WriteFile(gn_runtime_deps_path, '\n'.join(labels) + '\n')
cmd.append('--runtime-deps-list-file=%s' % gn_runtime_deps_path)
ret, output, _ = self.Run(cmd)
if ret:
if self.args.json_output:
# write errors to json.output
self.WriteJSON({'output': output}, self.args.json_output)
# If `gn gen` failed, we should exit early rather than trying to
# generate isolates. Run() will have already logged any error output.
self.Print('GN gen failed: %d' % ret)
return ret
android = 'target_os="android"' in vals['gn_args']
for target in swarming_targets:
if android:
# Android targets may be either android_apk or executable. The former
# will result in runtime_deps associated with the stamp file, while the
# latter will result in runtime_deps associated with the executable.
label = isolate_map[target]['label']
runtime_deps_targets = [
target + '.runtime_deps',
'obj/%s.stamp.runtime_deps' % label.replace(':', '/')]
elif (isolate_map[target]['type'] == 'script' or
isolate_map[target].get('label_type') == 'group'):
# For script targets, the build target is usually a group,
# for which gn generates the runtime_deps next to the stamp file
# for the label, which lives under the obj/ directory, but it may
# also be an executable.
label = isolate_map[target]['label']
runtime_deps_targets = [
'obj/%s.stamp.runtime_deps' % label.replace(':', '/')]
if self.platform == 'win32':
runtime_deps_targets += [ target + '.exe.runtime_deps' ]
else:
runtime_deps_targets += [ target + '.runtime_deps' ]
elif self.platform == 'win32':
runtime_deps_targets = [target + '.exe.runtime_deps']
else:
runtime_deps_targets = [target + '.runtime_deps']
for r in runtime_deps_targets:
runtime_deps_path = self.ToAbsPath(build_dir, r)
if self.Exists(runtime_deps_path):
break
else:
raise MBErr('did not generate any of %s' %
', '.join(runtime_deps_targets))
runtime_deps = self.ReadFile(runtime_deps_path).splitlines()
self.WriteIsolateFiles(build_dir, target, runtime_deps)
return 0
def RunGNIsolate(self):
target = self.args.target[0]
isolate_map = self.ReadIsolateMap()
err, labels = self.MapTargetsToLabels(isolate_map, [target])
if err:
raise MBErr(err)
label = labels[0]
build_dir = self.args.path[0]
cmd = self.GNCmd('desc', build_dir, label, 'runtime_deps')
ret, out, _ = self.Call(cmd)
if ret:
if out:
self.Print(out)
return ret
runtime_deps = out.splitlines()
self.WriteIsolateFiles(build_dir, target, runtime_deps)
ret, _, _ = self.Run([
self.PathJoin(self.chromium_src_dir, 'tools', 'luci-go',
self.isolate_exe),
'check',
'-i',
self.ToSrcRelPath('%s/%s.isolate' % (build_dir, target))],
buffer_output=False)
return ret
def WriteIsolateFiles(self, build_dir, target, runtime_deps):
isolate_path = self.ToAbsPath(build_dir, target + '.isolate')
self.WriteFile(isolate_path,
pprint.pformat({
'variables': {
'files': sorted(runtime_deps),
}
}) + '\n')
self.WriteJSON(
{
'args': [
'--isolated',
self.ToSrcRelPath('%s/%s.isolated' % (build_dir, target)),
'--isolate',
self.ToSrcRelPath('%s/%s.isolate' % (build_dir, target)),
],
'dir': self.chromium_src_dir,
'version': 1,
},
isolate_path + 'd.gen.json',
)
def MapTargetsToLabels(self, isolate_map, targets):
labels = []
err = ''
for target in targets:
if target == 'all':
labels.append(target)
elif target.startswith('//'):
labels.append(target)
else:
if target in isolate_map:
if isolate_map[target]['type'] == 'unknown':
err += ('test target "%s" type is unknown\n' % target)
else:
labels.append(isolate_map[target]['label'])
else:
err += ('target "%s" not found in '
'//infra/mb/gn_isolate_map.pyl\n' % target)
return err, labels
def GNCmd(self, subcommand, path, *args):
if self.platform.startswith('linux'):
subdir, exe = 'linux64', 'gn'
elif self.platform == 'darwin':
subdir, exe = 'mac', 'gn'
else:
subdir, exe = 'win', 'gn.exe'
arch = platform.machine()
if (arch.startswith('s390') or arch.startswith('ppc') or
self.platform.startswith('aix')):
# use gn in PATH
gn_path = 'gn'
else:
gn_path = self.PathJoin(self.chromium_src_dir, 'buildtools', subdir, exe)
return [gn_path, subcommand, path] + list(args)
def GNArgs(self, vals, expand_imports=False):
if vals['cros_passthrough']:
if not 'GN_ARGS' in os.environ:
raise MBErr('MB is expecting GN_ARGS to be in the environment')
gn_args = os.environ['GN_ARGS']
if not re.search('target_os.*=.*"chromeos"', gn_args):
raise MBErr('GN_ARGS is missing target_os = "chromeos": (GN_ARGS=%s)' %
gn_args)
else:
gn_args = vals['gn_args']
if self.args.goma_dir:
gn_args += ' goma_dir="%s"' % self.args.goma_dir
android_version_code = self.args.android_version_code
if android_version_code:
gn_args += ' android_default_version_code="%s"' % android_version_code
android_version_name = self.args.android_version_name
if android_version_name:
gn_args += ' android_default_version_name="%s"' % android_version_name
args_gn_lines = []
parsed_gn_args = {}
args_file = vals.get('args_file', None)
if args_file:
if expand_imports:
content = self.ReadFile(self.ToAbsPath(args_file))
parsed_gn_args = gn_helpers.FromGNArgs(content)
else:
args_gn_lines.append('import("%s")' % args_file)
# Canonicalize the arg string into a sorted, newline-separated list
# of key-value pairs, and de-dup the keys if need be so that only
# the last instance of each arg is listed.
parsed_gn_args.update(gn_helpers.FromGNArgs(gn_args))
args_gn_lines.append(gn_helpers.ToGNString(parsed_gn_args))
return '\n'.join(args_gn_lines)
def ToAbsPath(self, build_path, *comps):
return self.PathJoin(self.chromium_src_dir,
self.ToSrcRelPath(build_path),
*comps)
def ToSrcRelPath(self, path):
"""Returns a relative path from the top of the repo."""
if path.startswith('//'):
return path[2:].replace('/', self.sep)
return self.RelPath(path, self.chromium_src_dir)
def RunGNAnalyze(self, vals):
# Analyze runs before 'gn gen' now, so we need to run gn gen
# in order to ensure that we have a build directory.
ret = self.RunGNGen(vals, compute_grit_inputs_for_analyze=True)
if ret:
return ret
build_path = self.args.path[0]
input_path = self.args.input_path[0]
gn_input_path = input_path + '.gn'
output_path = self.args.output_path[0]
gn_output_path = output_path + '.gn'
inp = self.ReadInputJSON(['files', 'test_targets',
'additional_compile_targets'])
if self.args.verbose:
self.Print()
self.Print('analyze input:')
self.PrintJSON(inp)
self.Print()
# This shouldn't normally happen, but could due to unusual race conditions,
# like a try job that gets scheduled before a patch lands but runs after
# the patch has landed.
if not inp['files']:
self.Print('Warning: No files modified in patch, bailing out early.')
self.WriteJSON({
'status': 'No dependency',
'compile_targets': [],
'test_targets': [],
}, output_path)
return 0
gn_inp = {}
gn_inp['files'] = ['//' + f for f in inp['files'] if not f.startswith('//')]
isolate_map = self.ReadIsolateMap()
err, gn_inp['additional_compile_targets'] = self.MapTargetsToLabels(
isolate_map, inp['additional_compile_targets'])
if err:
raise MBErr(err)
err, gn_inp['test_targets'] = self.MapTargetsToLabels(
isolate_map, inp['test_targets'])
if err:
raise MBErr(err)
labels_to_targets = {}
for i, label in enumerate(gn_inp['test_targets']):
labels_to_targets[label] = inp['test_targets'][i]
try:
self.WriteJSON(gn_inp, gn_input_path)
cmd = self.GNCmd('analyze', build_path, gn_input_path, gn_output_path)
ret, output, _ = self.Run(cmd, force_verbose=True)
if ret:
if self.args.json_output:
# write errors to json.output
self.WriteJSON({'output': output}, self.args.json_output)
return ret
gn_outp_str = self.ReadFile(gn_output_path)
try:
gn_outp = json.loads(gn_outp_str)
except Exception as e:
self.Print("Failed to parse the JSON string GN returned: %s\n%s"
% (repr(gn_outp_str), str(e)))
raise
outp = {}
if 'status' in gn_outp:
outp['status'] = gn_outp['status']
if 'error' in gn_outp:
outp['error'] = gn_outp['error']
if 'invalid_targets' in gn_outp:
outp['invalid_targets'] = gn_outp['invalid_targets']
if 'compile_targets' in gn_outp:
all_input_compile_targets = sorted(
set(inp['test_targets'] + inp['additional_compile_targets']))
# If we're building 'all', we can throw away the rest of the targets
# since they're redundant.
if 'all' in gn_outp['compile_targets']:
outp['compile_targets'] = ['all']
else:
outp['compile_targets'] = gn_outp['compile_targets']
# crbug.com/736215: When GN returns targets back, for targets in
# the default toolchain, GN will have generated a phony ninja
# target matching the label, and so we can safely (and easily)
# transform any GN label into the matching ninja target. For
# targets in other toolchains, though, GN doesn't generate the
# phony targets, and we don't know how to turn the labels into
# compile targets. In this case, we also conservatively give up
# and build everything. Probably the right thing to do here is
# to have GN return the compile targets directly.
if any("(" in target for target in outp['compile_targets']):
self.Print('WARNING: targets with non-default toolchains were '
'found, building everything instead.')
outp['compile_targets'] = all_input_compile_targets
else:
outp['compile_targets'] = [
label.replace('//', '') for label in outp['compile_targets']]
# Windows has a maximum command line length of 8k; even Linux
# maxes out at 128k; if analyze returns a *really long* list of
# targets, we just give up and conservatively build everything instead.
# Probably the right thing here is for ninja to support response
# files as input on the command line
# (see https://github.com/ninja-build/ninja/issues/1355).
if len(' '.join(outp['compile_targets'])) > 7*1024:
self.Print('WARNING: Too many compile targets were affected.')
self.Print('WARNING: Building everything instead to avoid '
'command-line length issues.')
outp['compile_targets'] = all_input_compile_targets
if 'test_targets' in gn_outp:
outp['test_targets'] = [
labels_to_targets[label] for label in gn_outp['test_targets']]
if self.args.verbose:
self.Print()
self.Print('analyze output:')
self.PrintJSON(outp)
self.Print()
self.WriteJSON(outp, output_path)
finally:
if self.Exists(gn_input_path):
self.RemoveFile(gn_input_path)
if self.Exists(gn_output_path):
self.RemoveFile(gn_output_path)
return 0
def ReadInputJSON(self, required_keys):
path = self.args.input_path[0]
output_path = self.args.output_path[0]
if not self.Exists(path):
self.WriteFailureAndRaise('"%s" does not exist' % path, output_path)
try:
inp = json.loads(self.ReadFile(path))
except Exception as e:
self.WriteFailureAndRaise('Failed to read JSON input from "%s": %s' %
(path, e), output_path)
for k in required_keys:
if not k in inp:
self.WriteFailureAndRaise('input file is missing a "%s" key' % k,
output_path)
return inp
def WriteFailureAndRaise(self, msg, output_path):
if output_path:
self.WriteJSON({'error': msg}, output_path, force_verbose=True)
raise MBErr(msg)
def WriteJSON(self, obj, path, force_verbose=False):
try:
self.WriteFile(path, json.dumps(obj, indent=2, sort_keys=True) + '\n',
force_verbose=force_verbose)
except Exception as e:
raise MBErr('Error %s writing to the output path "%s"' %
(e, path))
def CheckCompile(self, builder_group, builder):
url_template = self.args.url_template + '/{builder}/builds/_all?as_text=1'
url = quote(
url_template.format(builder_group=builder_group, builder=builder),
safe=':/()?=')
try:
builds = json.loads(self.Fetch(url))
except Exception as e:
return str(e)
successes = sorted(
[int(x) for x in builds.keys() if "text" in builds[x] and
cmp(builds[x]["text"][:2], ["build", "successful"]) == 0],
reverse=True)
if not successes:
return "no successful builds"
build = builds[str(successes[0])]
step_names = set([step["name"] for step in build["steps"]])
compile_indicators = set(["compile", "compile (with patch)", "analyze"])
if compile_indicators & step_names:
return "compiles"
return "does not compile"
def PrintCmd(self, cmd, env):
if self.platform == 'win32':
env_prefix = 'set '
env_quoter = QuoteForSet
shell_quoter = QuoteForCmd
else:
env_prefix = ''
env_quoter = pipes.quote
shell_quoter = pipes.quote
def print_env(var):
if env and var in env:
self.Print('%s%s=%s' % (env_prefix, var, env_quoter(env[var])))
print_env('LLVM_FORCE_HEAD_REVISION')
if cmd[0] == self.executable:
cmd = ['python'] + cmd[1:]
self.Print(*[shell_quoter(arg) for arg in cmd])
def PrintJSON(self, obj):
self.Print(json.dumps(obj, indent=2, sort_keys=True))
def Build(self, target):
build_dir = self.ToSrcRelPath(self.args.path[0])
ninja_cmd = ['ninja', '-C', build_dir]
if self.args.jobs:
ninja_cmd.extend(['-j', '%d' % self.args.jobs])
ninja_cmd.append(target)
ret, _, _ = self.Run(ninja_cmd, force_verbose=False, buffer_output=False)
return ret
def Run(self, cmd, env=None, force_verbose=True, buffer_output=True):
# This function largely exists so it can be overridden for testing.
if self.args.dryrun or self.args.verbose or force_verbose:
self.PrintCmd(cmd, env)
if self.args.dryrun:
return 0, '', ''
ret, out, err = self.Call(cmd, env=env, buffer_output=buffer_output)
if self.args.verbose or force_verbose:
if ret:
self.Print(' -> returned %d' % ret)
if out:
self.Print(out, end='')
if err:
self.Print(err, end='', file=sys.stderr)
return ret, out, err
def Call(self, cmd, env=None, buffer_output=True):
if buffer_output:
p = subprocess.Popen(cmd, shell=False, cwd=self.chromium_src_dir,
stdout=subprocess.PIPE, stderr=subprocess.PIPE,
env=env)
out, err = p.communicate()
else:
p = subprocess.Popen(cmd, shell=False, cwd=self.chromium_src_dir,
env=env)
p.wait()
out = err = ''
return p.returncode, out, err
def ExpandUser(self, path):
# This function largely exists so it can be overridden for testing.
return os.path.expanduser(path)
def Exists(self, path):
# This function largely exists so it can be overridden for testing.
return os.path.exists(path)
def Fetch(self, url):
# This function largely exists so it can be overridden for testing.
f = urlopen(url)
contents = f.read()
f.close()
return contents
def MaybeMakeDirectory(self, path):
try:
os.makedirs(path)
except OSError as e:
if e.errno != errno.EEXIST:
raise
def PathJoin(self, *comps):
# This function largely exists so it can be overriden for testing.
return os.path.join(*comps)
def Print(self, *args, **kwargs):
# This function largely exists so it can be overridden for testing.
print(*args, **kwargs)
if kwargs.get('stream', sys.stdout) == sys.stdout:
sys.stdout.flush()
def ReadFile(self, path):
# This function largely exists so it can be overriden for testing.
with open(path) as fp:
return fp.read()
def RelPath(self, path, start='.'):
# This function largely exists so it can be overriden for testing.
return os.path.relpath(path, start)
def RemoveFile(self, path):
# This function largely exists so it can be overriden for testing.
os.remove(path)
def RemoveDirectory(self, abs_path):
if self.platform == 'win32':
# In other places in chromium, we often have to retry this command
# because we're worried about other processes still holding on to
# file handles, but when MB is invoked, it will be early enough in the
# build that their should be no other processes to interfere. We
# can change this if need be.
self.Run(['cmd.exe', '/c', 'rmdir', '/q', '/s', abs_path])
else:
shutil.rmtree(abs_path, ignore_errors=True)
def TempFile(self, mode='w'):
# This function largely exists so it can be overriden for testing.
return tempfile.NamedTemporaryFile(mode=mode, delete=False)
def WriteFile(self, path, contents, force_verbose=False):
# This function largely exists so it can be overriden for testing.
if self.args.dryrun or self.args.verbose or force_verbose:
self.Print('\nWriting """\\\n%s""" to %s.\n' % (contents, path))
with open(path, 'w') as fp:
return fp.write(contents)
class MBErr(Exception):
pass
# See http://goo.gl/l5NPDW and http://goo.gl/4Diozm for the painful
# details of this next section, which handles escaping command lines
# so that they can be copied and pasted into a cmd window.
UNSAFE_FOR_SET = set('^<>&|')
UNSAFE_FOR_CMD = UNSAFE_FOR_SET.union(set('()%'))
ALL_META_CHARS = UNSAFE_FOR_CMD.union(set('"'))
def QuoteForSet(arg):
if any(a in UNSAFE_FOR_SET for a in arg):
arg = ''.join('^' + a if a in UNSAFE_FOR_SET else a for a in arg)
return arg
def QuoteForCmd(arg):
# First, escape the arg so that CommandLineToArgvW will parse it properly.
if arg == '' or ' ' in arg or '"' in arg:
quote_re = re.compile(r'(\\*)"')
arg = '"%s"' % (quote_re.sub(lambda mo: 2 * mo.group(1) + '\\"', arg))
# Then check to see if the arg contains any metacharacters other than
# double quotes; if it does, quote everything (including the double
# quotes) for safety.
if any(a in UNSAFE_FOR_CMD for a in arg):
arg = ''.join('^' + a if a in ALL_META_CHARS else a for a in arg)
return arg
if __name__ == '__main__':
sys.exit(main(sys.argv[1:]))
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