mirror of
https://github.com/mozilla/gecko-dev.git
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272742b40d
Aliased commands have not loaded the virtualenv associated with a command/subcommand since bug 1695312. It has been defaulting to the `common` virtualenv, which worked most of the time since most commands use `common` and it also contains a large share of our dependencies. Differential Revision: https://phabricator.services.mozilla.com/D192376
608 lines
22 KiB
Python
608 lines
22 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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import math
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import os
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import shutil
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import sys
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from pathlib import Path
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if sys.version_info[0] < 3:
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import __builtin__ as builtins
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class MetaPathFinder(object):
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pass
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else:
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from importlib.abc import MetaPathFinder
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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
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on the filesystem. The following directory will be created:
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{}
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If you would like to use a different directory, rename or move it to your
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desired location, and set the MOZBUILD_STATE_PATH environment variable
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accordingly.
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""".strip()
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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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"release": {
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"short": "Release automation",
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"long": "Commands for used in release automation.",
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"priority": 5,
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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. "
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"These commands are unavailable for your current context, "
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'run "mach <command>" to see why.',
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"priority": 0,
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},
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}
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def _activate_python_environment(topsrcdir, get_state_dir):
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from mach.site import MachSiteManager
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mach_environment = MachSiteManager.from_environment(
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topsrcdir,
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get_state_dir,
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)
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mach_environment.activate()
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def _maybe_activate_mozillabuild_environment():
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if sys.platform != "win32":
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return
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mozillabuild = Path(os.environ.get("MOZILLABUILD", r"C:\mozilla-build"))
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os.environ.setdefault("MOZILLABUILD", str(mozillabuild))
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assert mozillabuild.exists(), (
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f'MozillaBuild was not found at "{mozillabuild}".\n'
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"If it's installed in a different location, please "
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'set the "MOZILLABUILD" environment variable '
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"accordingly."
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)
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use_msys2 = (mozillabuild / "msys2").exists()
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if use_msys2:
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mozillabuild_msys_tools_path = mozillabuild / "msys2" / "usr" / "bin"
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else:
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mozillabuild_msys_tools_path = mozillabuild / "msys" / "bin"
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paths_to_add = [mozillabuild_msys_tools_path, mozillabuild / "bin"]
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existing_paths = [Path(p) for p in os.environ.get("PATH", "").split(os.pathsep)]
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for new_path in paths_to_add:
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if new_path not in existing_paths:
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os.environ["PATH"] += f"{os.pathsep}{new_path}"
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def check_for_spaces(topsrcdir):
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if " " in topsrcdir:
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raise Exception(
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f"Your checkout at path '{topsrcdir}' contains a space, which "
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f"is not supported. Please move it to somewhere that does not "
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f"have a space in the path before rerunning mach."
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)
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mozillabuild_dir = os.environ.get("MOZILLABUILD", "")
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if sys.platform == "win32" and " " in mozillabuild_dir:
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raise Exception(
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f"Your installation of MozillaBuild appears to be installed on a path that "
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f"contains a space ('{mozillabuild_dir}') which is not supported. Please "
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f"reinstall MozillaBuild on a path without a space and restart your shell"
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f"from the new installation."
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)
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def initialize(topsrcdir, args=()):
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# This directory was deleted in bug 1666345, but there may be some ignored
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# files here. We can safely just delete it for the user so they don't have
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# to clean the repo themselves.
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deleted_dir = os.path.join(topsrcdir, "third_party", "python", "psutil")
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if os.path.exists(deleted_dir):
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shutil.rmtree(deleted_dir, ignore_errors=True)
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# We need the "mach" module to access the logic to parse virtualenv
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# requirements. Since that depends on "packaging", we add it to the path too.
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sys.path[0:0] = [
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os.path.join(topsrcdir, module)
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for module in (
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os.path.join("python", "mach"),
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os.path.join("third_party", "python", "packaging"),
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)
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]
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from mach.util import get_state_dir, get_virtualenv_base_dir, setenv
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state_dir = _create_state_dir()
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check_for_spaces(topsrcdir)
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# normpath state_dir to normalize msys-style slashes.
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_activate_python_environment(
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topsrcdir, lambda: os.path.normpath(get_state_dir(True, topsrcdir=topsrcdir))
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)
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_maybe_activate_mozillabuild_environment()
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import mach.main
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from mach.command_util import (
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MACH_COMMANDS,
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DetermineCommandVenvAction,
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load_commands_from_spec,
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)
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from mach.main import get_argument_parser
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# Set a reasonable limit to the number of open files.
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#
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# Some linux systems set `ulimit -n` to a very high number, which works
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# well for systems that run servers, but this setting causes performance
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# problems when programs close file descriptors before forking, like
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# Python's `subprocess.Popen(..., close_fds=True)` (close_fds=True is the
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# default in Python 3), or Rust's stdlib. In some cases, Firefox does the
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# same thing when spawning processes. We would prefer to lower this limit
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# to avoid such performance problems; processes spawned by `mach` will
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# inherit the limit set here.
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#
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# The Firefox build defaults the soft limit to 1024, except for builds that
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# do LTO, where the soft limit is 8192. We're going to default to the
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# latter, since people do occasionally do LTO builds on their local
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# machines, and requiring them to discover another magical setting after
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# setting up an LTO build in the first place doesn't seem good.
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#
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# This code mimics the code in taskcluster/scripts/run-task.
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try:
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import resource
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# Keep the hard limit the same, though, allowing processes to change
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# their soft limit if they need to (Firefox does, for instance).
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(soft, hard) = resource.getrlimit(resource.RLIMIT_NOFILE)
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# Permit people to override our default limit if necessary via
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# MOZ_LIMIT_NOFILE, which is the same variable `run-task` uses.
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limit = os.environ.get("MOZ_LIMIT_NOFILE")
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if limit:
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limit = int(limit)
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else:
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# If no explicit limit is given, use our default if it's less than
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# the current soft limit. For instance, the default on macOS is
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# 256, so we'd pick that rather than our default.
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limit = min(soft, 8192)
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# Now apply the limit, if it's different from the original one.
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if limit != soft:
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resource.setrlimit(resource.RLIMIT_NOFILE, (limit, hard))
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except ImportError:
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# The resource module is UNIX only.
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pass
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def resolve_repository():
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import mozversioncontrol
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try:
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# This API doesn't respect the vcs binary choices from configure.
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# If we ever need to use the VCS binary here, consider something
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# more robust.
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return mozversioncontrol.get_repository_object(path=topsrcdir)
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except (mozversioncontrol.InvalidRepoPath, mozversioncontrol.MissingVCSTool):
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return None
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def pre_dispatch_handler(context, handler, args):
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# If --disable-tests flag was enabled in the mozconfig used to compile
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# the build, tests will be disabled. Instead of trying to run
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# nonexistent tests then reporting a failure, this will prevent mach
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# from progressing beyond this point.
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if handler.category == "testing" and not handler.ok_if_tests_disabled:
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from mozbuild.base import BuildEnvironmentNotFoundException
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try:
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from mozbuild.base import MozbuildObject
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# all environments should have an instance of build object.
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build = MozbuildObject.from_environment()
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if build is not None and not getattr(
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build, "substs", {"ENABLE_TESTS": True}
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).get("ENABLE_TESTS"):
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print(
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"Tests have been disabled with --disable-tests.\n"
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+ "Remove the flag, and re-compile to enable tests."
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)
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sys.exit(1)
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except BuildEnvironmentNotFoundException:
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# likely automation environment, so do nothing.
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pass
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def post_dispatch_handler(
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context, handler, instance, success, start_time, end_time, depth, args
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):
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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 finalize telemetry data if this mach command was invoked as part of
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# another mach command.
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if depth != 1:
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return
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_finalize_telemetry_glean(
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context.telemetry, handler.name == "bootstrap", success
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)
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def populate_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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return state_dir
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if key == "local_state_dir":
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return get_state_dir(specific_to_topsrcdir=True)
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if key == "topdir":
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return topsrcdir
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if key == "pre_dispatch_handler":
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return pre_dispatch_handler
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if key == "post_dispatch_handler":
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return post_dispatch_handler
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if key == "repository":
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return resolve_repository()
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raise AttributeError(key)
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# Note which process is top-level so that recursive mach invocations can avoid writing
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# telemetry data.
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if "MACH_MAIN_PID" not in os.environ:
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setenv("MACH_MAIN_PID", str(os.getpid()))
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driver = mach.main.Mach(os.getcwd())
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driver.populate_context_handler = populate_context
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if not driver.settings_paths:
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# default global machrc location
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driver.settings_paths.append(state_dir)
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# always load local repository configuration
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driver.settings_paths.append(topsrcdir)
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driver.load_settings()
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aliases = driver.settings.alias
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parser = get_argument_parser(
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action=DetermineCommandVenvAction,
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topsrcdir=topsrcdir,
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)
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from argparse import Namespace
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namespace_in = Namespace()
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setattr(namespace_in, "mach_command_aliases", aliases)
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namespace = parser.parse_args(args, namespace_in)
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command_name = getattr(namespace, "command_name", None)
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site_name = getattr(namespace, "site_name", "common")
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command_site_manager = None
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# the 'clobber' command needs to run in the 'mach' venv, so we
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# don't want to activate any other virtualenv for it.
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if command_name != "clobber":
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from mach.site import CommandSiteManager
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command_site_manager = CommandSiteManager.from_environment(
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topsrcdir,
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lambda: os.path.normpath(get_state_dir(True, topsrcdir=topsrcdir)),
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site_name,
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get_virtualenv_base_dir(topsrcdir),
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)
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command_site_manager.activate()
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for category, meta in CATEGORIES.items():
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driver.define_category(category, meta["short"], meta["long"], meta["priority"])
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# Sparse checkouts may not have all mach_commands.py files. Ignore
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# errors from missing files. Same for spidermonkey tarballs.
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repo = resolve_repository()
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if repo != "SOURCE":
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missing_ok = (
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repo is not None and repo.sparse_checkout_present()
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) or os.path.exists(os.path.join(topsrcdir, "INSTALL"))
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else:
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missing_ok = ()
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commands_that_need_all_modules_loaded = [
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"busted",
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"help",
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"mach-commands",
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"mach-completion",
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"mach-debug-commands",
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]
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def commands_to_load(top_level_command: str):
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visited = set()
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def find_downstream_commands_recursively(command: str):
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if not MACH_COMMANDS.get(command):
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return
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if command in visited:
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return
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visited.add(command)
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for command_dependency in MACH_COMMANDS[command].command_dependencies:
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find_downstream_commands_recursively(command_dependency)
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find_downstream_commands_recursively(top_level_command)
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return list(visited)
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if (
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command_name not in MACH_COMMANDS
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or command_name in commands_that_need_all_modules_loaded
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):
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command_modules_to_load = MACH_COMMANDS
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else:
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command_names_to_load = commands_to_load(command_name)
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command_modules_to_load = {
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command_name: MACH_COMMANDS[command_name]
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for command_name in command_names_to_load
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}
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driver.command_site_manager = command_site_manager
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load_commands_from_spec(command_modules_to_load, topsrcdir, missing_ok=missing_ok)
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return driver
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def _finalize_telemetry_glean(telemetry, is_bootstrap, success):
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"""Submit telemetry collected by Glean.
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Finalizes some metrics (command success state and duration, system information) and
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requests Glean to send the collected data.
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"""
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from mach.telemetry import MACH_METRICS_PATH
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from mozbuild.telemetry import (
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get_cpu_brand,
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get_distro_and_version,
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get_psutil_stats,
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get_shell_info,
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get_vscode_running,
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)
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mach_metrics = telemetry.metrics(MACH_METRICS_PATH)
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mach_metrics.mach.duration.stop()
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mach_metrics.mach.success.set(success)
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system_metrics = mach_metrics.mach.system
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cpu_brand = get_cpu_brand()
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if cpu_brand:
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system_metrics.cpu_brand.set(cpu_brand)
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distro, version = get_distro_and_version()
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system_metrics.distro.set(distro)
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system_metrics.distro_version.set(version)
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vscode_terminal, ssh_connection = get_shell_info()
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system_metrics.vscode_terminal.set(vscode_terminal)
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system_metrics.ssh_connection.set(ssh_connection)
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system_metrics.vscode_running.set(get_vscode_running())
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has_psutil, logical_cores, physical_cores, memory_total = get_psutil_stats()
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if has_psutil:
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# psutil may not be available (we may not have been able to download
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# a wheel or build it from source).
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system_metrics.logical_cores.add(logical_cores)
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if physical_cores is not None:
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system_metrics.physical_cores.add(physical_cores)
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if memory_total is not None:
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system_metrics.memory.accumulate(
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int(math.ceil(float(memory_total) / (1024 * 1024 * 1024)))
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)
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telemetry.submit(is_bootstrap)
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def _create_state_dir():
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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.
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state_dir = os.environ.get("MOZBUILD_STATE_PATH")
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if state_dir:
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if not os.path.exists(state_dir):
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print(
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"Creating global state directory from environment variable: {}".format(
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state_dir
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)
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)
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else:
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state_dir = os.path.expanduser("~/.mozbuild")
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if not os.path.exists(state_dir):
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if not os.environ.get("MOZ_AUTOMATION"):
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print(STATE_DIR_FIRST_RUN.format(state_dir))
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print("Creating default state directory: {}".format(state_dir))
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os.makedirs(state_dir, mode=0o770, exist_ok=True)
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return state_dir
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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 = (
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os.path.normcase(
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os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
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)
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+ os.sep
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)
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self._modules = set()
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def __call__(self, name, globals=None, locals=None, fromlist=None, level=-1):
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if sys.version_info[0] >= 3 and level < 0:
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level = 0
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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)
|
|
|
|
# Some tests replace modules in sys.modules with non-module instances.
|
|
if not isinstance(module, ModuleType):
|
|
return module
|
|
|
|
resolved_name = module.__name__
|
|
if resolved_name in self._modules:
|
|
return module
|
|
self._modules.add(resolved_name)
|
|
|
|
# Builtin modules don't have a __file__ attribute.
|
|
if not getattr(module, "__file__", None):
|
|
return module
|
|
|
|
# Note: module.__file__ is not always absolute.
|
|
path = os.path.normcase(os.path.abspath(module.__file__))
|
|
# Note: we could avoid normcase and abspath above for non pyc/pyo
|
|
# files, but those are actually rare, so it doesn't really matter.
|
|
if not path.endswith((".pyc", ".pyo")):
|
|
return module
|
|
|
|
# Ignore modules outside our source directory
|
|
if not path.startswith(self._source_dir):
|
|
return module
|
|
|
|
# If there is no .py corresponding to the .pyc/.pyo module we're
|
|
# loading, remove the .pyc/.pyo file, and reload the module.
|
|
# Since we already loaded the .pyc/.pyo module, if it had side
|
|
# effects, they will have happened already, and loading the module
|
|
# with the same name, from another directory may have the same side
|
|
# effects (or different ones). We assume it's not a problem for the
|
|
# python modules under our source directory (either because it
|
|
# doesn't happen or because it doesn't matter).
|
|
if not os.path.exists(module.__file__[:-1]):
|
|
if os.path.exists(module.__file__):
|
|
os.remove(module.__file__)
|
|
del sys.modules[module.__name__]
|
|
module = self(name, globals, locals, fromlist, level)
|
|
|
|
return module
|
|
|
|
|
|
# Hook import such that .pyc/.pyo files without a corresponding .py file in
|
|
# the source directory are essentially ignored. See further below for details
|
|
# and caveats.
|
|
# Objdirs outside the source directory are ignored because in most cases, if
|
|
# a .pyc/.pyo file exists there, a .py file will be next to it anyways.
|
|
class FinderHook(MetaPathFinder):
|
|
def __init__(self, klass):
|
|
# Assume the source directory is the parent directory of the one
|
|
# containing this file.
|
|
self._source_dir = (
|
|
os.path.normcase(
|
|
os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
|
|
)
|
|
+ os.sep
|
|
)
|
|
self.finder_class = klass
|
|
|
|
def find_spec(self, full_name, paths=None, target=None):
|
|
spec = self.finder_class.find_spec(full_name, paths, target)
|
|
|
|
# Some modules don't have an origin.
|
|
if spec is None or spec.origin is None:
|
|
return spec
|
|
|
|
# Normalize the origin path.
|
|
path = os.path.normcase(os.path.abspath(spec.origin))
|
|
# Note: we could avoid normcase and abspath above for non pyc/pyo
|
|
# files, but those are actually rare, so it doesn't really matter.
|
|
if not path.endswith((".pyc", ".pyo")):
|
|
return spec
|
|
|
|
# Ignore modules outside our source directory
|
|
if not path.startswith(self._source_dir):
|
|
return spec
|
|
|
|
# If there is no .py corresponding to the .pyc/.pyo module we're
|
|
# resolving, remove the .pyc/.pyo file, and try again.
|
|
if not os.path.exists(spec.origin[:-1]):
|
|
if os.path.exists(spec.origin):
|
|
os.remove(spec.origin)
|
|
spec = self.finder_class.find_spec(full_name, paths, target)
|
|
|
|
return spec
|
|
|
|
|
|
# Additional hook for python >= 3.8's importlib.metadata.
|
|
class MetadataHook(FinderHook):
|
|
def find_distributions(self, *args, **kwargs):
|
|
return self.finder_class.find_distributions(*args, **kwargs)
|
|
|
|
|
|
def hook(finder):
|
|
has_find_spec = hasattr(finder, "find_spec")
|
|
has_find_distributions = hasattr(finder, "find_distributions")
|
|
if has_find_spec and has_find_distributions:
|
|
return MetadataHook(finder)
|
|
elif has_find_spec:
|
|
return FinderHook(finder)
|
|
return finder
|
|
|
|
|
|
# Install our hook. This can be deleted when the Python 3 migration is complete.
|
|
if sys.version_info[0] < 3:
|
|
builtins.__import__ = ImportHook(builtins.__import__)
|
|
else:
|
|
sys.meta_path = [hook(c) for c in sys.meta_path]
|