mirror of
https://github.com/mozilla/gecko-dev.git
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415 lines
14 KiB
Python
415 lines
14 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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from __future__ import print_function, unicode_literals
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import errno
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import json
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import os
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import platform
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import random
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import subprocess
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import sys
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import uuid
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import __builtin__
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from types import ModuleType
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STATE_DIR_FIRST_RUN = '''
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mach and the build system store shared state in a common directory on the
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filesystem. The following directory will be created:
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{userdir}
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If you would like to use a different directory, hit CTRL+c and set the
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MOZBUILD_STATE_PATH environment variable to the directory you would like to
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use and re-run mach. For this change to take effect forever, you'll likely
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want to export this environment variable from your shell's init scripts.
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Press ENTER/RETURN to continue or CTRL+c to abort.
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'''.lstrip()
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# TODO Bug 794506 Integrate with the in-tree virtualenv configuration.
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SEARCH_PATHS = [
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'python/mach',
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'python/mozboot',
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'python/mozbuild',
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'python/mozlint',
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'python/mozversioncontrol',
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'python/blessings',
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'python/compare-locales',
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'python/configobj',
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'python/futures',
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'python/jsmin',
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'python/psutil',
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'python/pylru',
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'python/which',
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'python/pystache',
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'python/pyyaml/lib',
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'python/requests',
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'python/slugid',
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'python/py',
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'python/pytest',
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'python/redo',
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'python/voluptuous',
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'build',
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'build/pymake',
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'config',
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'dom/bindings',
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'dom/bindings/parser',
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'dom/media/test/external',
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'layout/tools/reftest',
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'other-licenses/ply',
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'taskcluster',
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'testing',
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'testing/firefox-ui/harness',
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'testing/firefox-ui/tests',
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'testing/marionette/harness',
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'testing/marionette/harness/marionette/runner/mixins/browsermob-proxy-py',
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'testing/marionette/client',
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'testing/mozbase/mozcrash',
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'testing/mozbase/mozdebug',
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'testing/mozbase/mozdevice',
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'testing/mozbase/mozfile',
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'testing/mozbase/mozhttpd',
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'testing/mozbase/mozinfo',
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'testing/mozbase/mozinstall',
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'testing/mozbase/mozleak',
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'testing/mozbase/mozlog',
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'testing/mozbase/moznetwork',
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'testing/mozbase/mozprocess',
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'testing/mozbase/mozprofile',
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'testing/mozbase/mozrunner',
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'testing/mozbase/mozsystemmonitor',
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'testing/mozbase/mozscreenshot',
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'testing/mozbase/moztest',
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'testing/mozbase/mozversion',
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'testing/mozbase/manifestparser',
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'testing/puppeteer/firefox',
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'testing/taskcluster',
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'testing/tools/autotry',
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'testing/web-platform',
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'testing/web-platform/harness',
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'testing/web-platform/tests/tools/wptserve',
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'testing/xpcshell',
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'xpcom/idl-parser',
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]
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# Individual files providing mach commands.
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MACH_MODULES = [
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'addon-sdk/mach_commands.py',
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'build/valgrind/mach_commands.py',
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'devtools/shared/css/generated/mach_commands.py',
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'dom/bindings/mach_commands.py',
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'dom/media/test/external/mach_commands.py',
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'layout/tools/reftest/mach_commands.py',
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'python/mach_commands.py',
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'python/mach/mach/commands/commandinfo.py',
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'python/mach/mach/commands/settings.py',
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'python/compare-locales/mach_commands.py',
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'python/mozboot/mozboot/mach_commands.py',
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'python/mozbuild/mozbuild/mach_commands.py',
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'python/mozbuild/mozbuild/backend/mach_commands.py',
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'python/mozbuild/mozbuild/compilation/codecomplete.py',
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'python/mozbuild/mozbuild/frontend/mach_commands.py',
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'services/common/tests/mach_commands.py',
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'taskcluster/mach_commands.py',
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'testing/firefox-ui/mach_commands.py',
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'testing/mach_commands.py',
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'testing/marionette/mach_commands.py',
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'testing/mochitest/mach_commands.py',
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'testing/mozharness/mach_commands.py',
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'testing/talos/mach_commands.py',
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'testing/web-platform/mach_commands.py',
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'testing/xpcshell/mach_commands.py',
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'tools/docs/mach_commands.py',
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'tools/lint/mach_commands.py',
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'tools/mach_commands.py',
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'tools/power/mach_commands.py',
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'mobile/android/mach_commands.py',
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]
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CATEGORIES = {
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'build': {
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'short': 'Build Commands',
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'long': 'Interact with the build system',
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'priority': 80,
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},
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'post-build': {
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'short': 'Post-build Commands',
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'long': 'Common actions performed after completing a build.',
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'priority': 70,
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},
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'testing': {
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'short': 'Testing',
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'long': 'Run tests.',
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'priority': 60,
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},
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'ci': {
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'short': 'CI',
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'long': 'Taskcluster commands',
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'priority': 59
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},
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'devenv': {
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'short': 'Development Environment',
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'long': 'Set up and configure your development environment.',
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'priority': 50,
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},
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'build-dev': {
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'short': 'Low-level Build System Interaction',
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'long': 'Interact with specific parts of the build system.',
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'priority': 20,
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},
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'misc': {
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'short': 'Potpourri',
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'long': 'Potent potables and assorted snacks.',
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'priority': 10,
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},
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'disabled': {
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'short': 'Disabled',
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'long': 'The disabled commands are hidden by default. Use -v to display them. These commands are unavailable for your current context, run "mach <command>" to see why.',
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'priority': 0,
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}
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}
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# We submit data to telemetry approximately every this many mach invocations
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TELEMETRY_SUBMISSION_FREQUENCY = 10
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def bootstrap(topsrcdir, mozilla_dir=None):
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if mozilla_dir is None:
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mozilla_dir = topsrcdir
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# Ensure we are running Python 2.7+. We put this check here so we generate a
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# user-friendly error message rather than a cryptic stack trace on module
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# import.
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if sys.version_info[0] != 2 or sys.version_info[1] < 7:
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print('Python 2.7 or above (but not Python 3) is required to run mach.')
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print('You are running Python', platform.python_version())
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sys.exit(1)
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# Global build system and mach state is stored in a central directory. By
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# default, this is ~/.mozbuild. However, it can be defined via an
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# environment variable. We detect first run (by lack of this directory
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# existing) and notify the user that it will be created. The logic for
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# creation is much simpler for the "advanced" environment variable use
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# case. For default behavior, we educate users and give them an opportunity
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# to react. We always exit after creating the directory because users don't
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# like surprises.
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sys.path[0:0] = [os.path.join(mozilla_dir, path) for path in SEARCH_PATHS]
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import mach.main
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from mozboot.util import get_state_dir
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def telemetry_handler(context, data):
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# We have not opted-in to telemetry
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if 'BUILD_SYSTEM_TELEMETRY' not in os.environ:
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return
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telemetry_dir = os.path.join(get_state_dir()[0], 'telemetry')
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try:
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os.mkdir(telemetry_dir)
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except OSError as e:
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if e.errno != errno.EEXIST:
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raise
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outgoing_dir = os.path.join(telemetry_dir, 'outgoing')
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try:
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os.mkdir(outgoing_dir)
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except OSError as e:
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if e.errno != errno.EEXIST:
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raise
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# Add common metadata to help submit sorted data later on.
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data['argv'] = sys.argv
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data.setdefault('system', {}).update(dict(
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architecture=list(platform.architecture()),
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machine=platform.machine(),
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python_version=platform.python_version(),
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release=platform.release(),
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system=platform.system(),
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version=platform.version(),
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))
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if platform.system() == 'Linux':
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dist = list(platform.linux_distribution())
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data['system']['linux_distribution'] = dist
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elif platform.system() == 'Windows':
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win32_ver=list((platform.win32_ver())),
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data['system']['win32_ver'] = win32_ver
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elif platform.system() == 'Darwin':
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# mac version is a special Cupertino snowflake
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r, v, m = platform.mac_ver()
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data['system']['mac_ver'] = [r, list(v), m]
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with open(os.path.join(outgoing_dir, str(uuid.uuid4()) + '.json'),
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'w') as f:
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json.dump(data, f, sort_keys=True)
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def should_skip_dispatch(context, handler):
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# The user is performing a maintenance command.
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if handler.name in ('bootstrap', 'doctor', 'mach-commands', 'mercurial-setup'):
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return True
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# We are running in automation.
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if 'MOZ_AUTOMATION' in os.environ or 'TASK_ID' in os.environ:
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return True
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# The environment is likely a machine invocation.
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if sys.stdin.closed or not sys.stdin.isatty():
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return True
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return False
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def post_dispatch_handler(context, handler, args):
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"""Perform global operations after command dispatch.
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For now, we will use this to handle build system telemetry.
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"""
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# Don't do anything when...
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if should_skip_dispatch(context, handler):
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return
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# We call mach environment in client.mk which would cause the
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# data submission below to block the forward progress of make.
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if handler.name in ('environment'):
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return
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# We have not opted-in to telemetry
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if 'BUILD_SYSTEM_TELEMETRY' not in os.environ:
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return
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# Every n-th operation
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if random.randint(1, TELEMETRY_SUBMISSION_FREQUENCY) != 1:
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return
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with open(os.devnull, 'wb') as devnull:
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subprocess.Popen([sys.executable,
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os.path.join(topsrcdir, 'build',
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'submit_telemetry_data.py'),
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get_state_dir()[0]],
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stdout=devnull, stderr=devnull)
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def populate_context(context, key=None):
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if key is None:
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return
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if key == 'state_dir':
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state_dir, is_environ = get_state_dir()
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if is_environ:
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if not os.path.exists(state_dir):
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print('Creating global state directory from environment variable: %s'
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% state_dir)
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os.makedirs(state_dir, mode=0o770)
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else:
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if not os.path.exists(state_dir):
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print(STATE_DIR_FIRST_RUN.format(userdir=state_dir))
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try:
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sys.stdin.readline()
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except KeyboardInterrupt:
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sys.exit(1)
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print('\nCreating default state directory: %s' % state_dir)
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os.makedirs(state_dir, mode=0o770)
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return state_dir
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if key == 'topdir':
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return topsrcdir
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if key == 'telemetry_handler':
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return telemetry_handler
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if key == 'post_dispatch_handler':
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return post_dispatch_handler
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raise AttributeError(key)
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mach = mach.main.Mach(os.getcwd())
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mach.populate_context_handler = populate_context
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if not mach.settings_paths:
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# default global machrc location
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mach.settings_paths.append(get_state_dir()[0])
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# always load local repository configuration
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mach.settings_paths.append(mozilla_dir)
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for category, meta in CATEGORIES.items():
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mach.define_category(category, meta['short'], meta['long'],
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meta['priority'])
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for path in MACH_MODULES:
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mach.load_commands_from_file(os.path.join(mozilla_dir, path))
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return mach
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# Hook import such that .pyc/.pyo files without a corresponding .py file in
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# the source directory are essentially ignored. See further below for details
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# and caveats.
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# Objdirs outside the source directory are ignored because in most cases, if
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# a .pyc/.pyo file exists there, a .py file will be next to it anyways.
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class ImportHook(object):
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def __init__(self, original_import):
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self._original_import = original_import
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# Assume the source directory is the parent directory of the one
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# containing this file.
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self._source_dir = os.path.normcase(os.path.abspath(
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os.path.dirname(os.path.dirname(__file__)))) + os.sep
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self._modules = set()
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def __call__(self, name, globals=None, locals=None, fromlist=None,
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level=-1):
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# name might be a relative import. Instead of figuring out what that
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# resolves to, which is complex, just rely on the real import.
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# Since we don't know the full module name, we can't check sys.modules,
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# so we need to keep track of which modules we've already seen to avoid
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# to stat() them again when they are imported multiple times.
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module = self._original_import(name, globals, locals, fromlist, level)
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# Some tests replace modules in sys.modules with non-module instances.
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if not isinstance(module, ModuleType):
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return module
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resolved_name = module.__name__
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if resolved_name in self._modules:
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return module
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self._modules.add(resolved_name)
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# Builtin modules don't have a __file__ attribute.
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if not hasattr(module, '__file__'):
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return module
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# Note: module.__file__ is not always absolute.
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path = os.path.normcase(os.path.abspath(module.__file__))
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# Note: we could avoid normcase and abspath above for non pyc/pyo
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# files, but those are actually rare, so it doesn't really matter.
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if not path.endswith(('.pyc', '.pyo')):
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return module
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# Ignore modules outside our source directory
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if not path.startswith(self._source_dir):
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return module
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# If there is no .py corresponding to the .pyc/.pyo module we're
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# loading, remove the .pyc/.pyo file, and reload the module.
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# Since we already loaded the .pyc/.pyo module, if it had side
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# effects, they will have happened already, and loading the module
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# with the same name, from another directory may have the same side
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# effects (or different ones). We assume it's not a problem for the
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# python modules under our source directory (either because it
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# doesn't happen or because it doesn't matter).
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if not os.path.exists(module.__file__[:-1]):
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os.remove(module.__file__)
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del sys.modules[module.__name__]
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module = self(name, globals, locals, fromlist, level)
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return module
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# Install our hook
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__builtin__.__import__ = ImportHook(__builtin__.__import__)
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