18252174847

Committed 05 Oct 2025 01:36AM UTC coverage: 43.382% (-36.9%) from 80.261%

Build # 18252174847

Build Type

push

github

Committed by

web-flow

Commit Message

run tests on mac arm (#22717)

Just doing the minimal to pull forward the x86_64 pattern.

ref #20993

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43.59

/src/python/pants/init/options_initializer.py

# Copyright 2016 Pants project contributors (see CONTRIBUTORS.md).
# Licensed under the Apache License, Version 2.0 (see LICENSE).

from __future__ import annotations

import dataclasses
import importlib
import logging
import sys
from collections.abc import Iterator
from contextlib import contextmanager
from pathlib import Path

import pkg_resources

from pants.build_graph.build_configuration import BuildConfiguration
from pants.engine.env_vars import CompleteEnvironmentVars
from pants.engine.internals.native_engine import PyExecutor
from pants.engine.unions import UnionMembership
from pants.help.flag_error_help_printer import FlagErrorHelpPrinter
from pants.init.bootstrap_scheduler import BootstrapScheduler
from pants.init.engine_initializer import EngineInitializer
from pants.init.extension_loader import (
    load_backends_and_plugins,
    load_build_configuration_from_source,
)
from pants.init.plugin_resolver import PluginResolver
from pants.init.plugin_resolver import rules as plugin_resolver_rules
from pants.option.bootstrap_options import DynamicRemoteOptions
from pants.option.errors import UnknownFlagsError
from pants.option.options import Options
from pants.option.options_bootstrapper import OptionsBootstrapper
from pants.util.requirements import parse_requirements_file

logger = logging.getLogger(__name__)


def _initialize_build_configuration(
    plugin_resolver: PluginResolver,
    options_bootstrapper: OptionsBootstrapper,
    env: CompleteEnvironmentVars,
) -> BuildConfiguration:
    """Initialize a BuildConfiguration for the given OptionsBootstrapper.

    NB: This method:
      1. has the side effect of (idempotently) adding PYTHONPATH entries for this process
      2. is expensive to call, because it might resolve plugins from the network
    """

    bootstrap_options = options_bootstrapper.bootstrap_options.for_global_scope()

    # Add any extra paths to python path (e.g., for loading extra source backends).
    for path in bootstrap_options.pythonpath:
        if path not in sys.path:
            sys.path.append(path)
            pkg_resources.fixup_namespace_packages(path)

    # Resolve the actual Python code for any plugins. `sys.path` is modified as a side effect if
    # plugins were configured.
    backends_requirements = _collect_backends_requirements(bootstrap_options.backend_packages)
    plugin_resolver.resolve(options_bootstrapper, env, backends_requirements)

    # Load plugins and backends.
    return load_backends_and_plugins(
        bootstrap_options.plugins,
        bootstrap_options.backend_packages,
    )


def _collect_backends_requirements(backends: list[str]) -> list[str]:
    """Collects backend package dependencies, in case those are declared in an adjacent
    requirements.txt. Ignores any loading errors, assuming those will be later on handled by the
    backends loader.

    :param backends: An list of packages to load v2 backends requirements from.
    """
    requirements = []

    for backend_package in backends:
        try:
            backend_package_spec = importlib.util.find_spec(backend_package)
        except ModuleNotFoundError:
            continue

        if backend_package_spec is None:
            continue

        if backend_package_spec.origin is None:
            logger.warning(
                f"Can not check requirements for backend: '{backend_package}'. A __init__.py file is probably missing."
            )
            continue

        requirements_txt_file_path = Path(backend_package_spec.origin).parent.joinpath(
            "requirements.txt"
        )
        if requirements_txt_file_path.exists():
            content = requirements_txt_file_path.read_text()
            backend_package_requirements = [
                str(r)
                for r in parse_requirements_file(content, rel_path=str(requirements_txt_file_path))
            ]
            requirements.extend(backend_package_requirements)

    return requirements


def create_bootstrap_scheduler(
    options_bootstrapper: OptionsBootstrapper, executor: PyExecutor
) -> BootstrapScheduler:
    bc_builder = BuildConfiguration.Builder()
    # To load plugins, we only need access to the Python/PEX rules.
    load_build_configuration_from_source(bc_builder, ["pants.backend.python"])
    # And to plugin-loading-specific rules.
    bc_builder.register_rules("_dummy_for_bootstrapping_", plugin_resolver_rules())
    # We allow unrecognized options to defer any option error handling until post-bootstrap.
    bc_builder.allow_unknown_options()
    return BootstrapScheduler(
        EngineInitializer.setup_graph(
            options_bootstrapper.bootstrap_options.for_global_scope(),
            bc_builder.create(),
            DynamicRemoteOptions.disabled(),
            executor,
            is_bootstrap=True,
        ).scheduler
    )


class OptionsInitializer:
    """Initializes BuildConfiguration and Options instances given an OptionsBootstrapper.

    NB: Although this constructor takes an instance of the OptionsBootstrapper, it is
    used only to construct a "bootstrap" Scheduler: actual calls to resolve plugins use a
    per-request instance of the OptionsBootstrapper, which might request different plugins.

    TODO: We would eventually like to use the bootstrap Scheduler to construct the
    OptionsBootstrapper as well, but for now we do the opposite thing, and the Scheduler is
    used only to resolve plugins.
      see https://github.com/pantsbuild/pants/pull/11568
    """

    def __init__(
        self,
        options_bootstrapper: OptionsBootstrapper,
        executor: PyExecutor,
    ) -> None:
        self._bootstrap_scheduler = create_bootstrap_scheduler(options_bootstrapper, executor)
        self._plugin_resolver = PluginResolver(self._bootstrap_scheduler)

    def build_config(
        self,
        options_bootstrapper: OptionsBootstrapper,
        env: CompleteEnvironmentVars,
    ) -> BuildConfiguration:
        return _initialize_build_configuration(self._plugin_resolver, options_bootstrapper, env)

    def options(
        self,
        options_bootstrapper: OptionsBootstrapper,
        env: CompleteEnvironmentVars,
        build_config: BuildConfiguration,
        union_membership: UnionMembership,
        *,
        raise_: bool,
    ) -> Options:
        with self.handle_unknown_flags(options_bootstrapper, env, raise_=raise_):
            return options_bootstrapper.full_options(
                build_config.known_scope_infos, union_membership, build_config.allow_unknown_options
            )

    @contextmanager
    def handle_unknown_flags(
        self,
        options_bootstrapper: OptionsBootstrapper,
        env: CompleteEnvironmentVars,
        *,
        raise_: bool,
    ) -> Iterator[None]:
        """If there are any unknown flags, print "Did you mean?" and possibly error."""
        try:
            yield
        except UnknownFlagsError as err:
            build_config = _initialize_build_configuration(
                self._plugin_resolver, options_bootstrapper, env
            )
            # We need an options instance in order to get "did you mean" suggestions, but we know
            # there are bad flags in the args, so we generate options with no flags.
            no_arg_bootstrapper = dataclasses.replace(
                options_bootstrapper, args=("dummy_first_arg",)
            )
            options = no_arg_bootstrapper.full_options(
                build_config.known_scope_infos,
                union_membership=UnionMembership.empty(),
            )
            FlagErrorHelpPrinter(options).handle_unknown_flags(err)
            if raise_:
                raise err

1	# Copyright 2016 Pants project contributors (see CONTRIBUTORS.md).
2	# Licensed under the Apache License, Version 2.0 (see LICENSE).
3
4	from __future__ import annotations	3✔
5
6	import dataclasses	3✔
7	import importlib	3✔
8	import logging	3✔
9	import sys	3✔
10	from collections.abc import Iterator	3✔
11	from contextlib import contextmanager	3✔
12	from pathlib import Path	3✔
13
14	import pkg_resources	3✔
15
16	from pants.build_graph.build_configuration import BuildConfiguration	3✔
17	from pants.engine.env_vars import CompleteEnvironmentVars	3✔
18	from pants.engine.internals.native_engine import PyExecutor	3✔
19	from pants.engine.unions import UnionMembership	3✔
20	from pants.help.flag_error_help_printer import FlagErrorHelpPrinter	3✔
21	from pants.init.bootstrap_scheduler import BootstrapScheduler	3✔
22	from pants.init.engine_initializer import EngineInitializer	3✔
23	from pants.init.extension_loader import (	3✔
24	load_backends_and_plugins,
25	load_build_configuration_from_source,
26	)
27	from pants.init.plugin_resolver import PluginResolver	3✔
28	from pants.init.plugin_resolver import rules as plugin_resolver_rules	3✔
29	from pants.option.bootstrap_options import DynamicRemoteOptions	3✔
30	from pants.option.errors import UnknownFlagsError	3✔
31	from pants.option.options import Options	3✔
32	from pants.option.options_bootstrapper import OptionsBootstrapper	3✔
33	from pants.util.requirements import parse_requirements_file	3✔
34
35	logger = logging.getLogger(__name__)	3✔
36
37
38	def _initialize_build_configuration(	3✔
39	plugin_resolver: PluginResolver,
40	options_bootstrapper: OptionsBootstrapper,
41	env: CompleteEnvironmentVars,
42	) -> BuildConfiguration:
43	"""Initialize a BuildConfiguration for the given OptionsBootstrapper.
44
45	NB: This method:
46	1. has the side effect of (idempotently) adding PYTHONPATH entries for this process
47	2. is expensive to call, because it might resolve plugins from the network
48	"""
49
50	bootstrap_options = options_bootstrapper.bootstrap_options.for_global_scope()	×
51
52	# Add any extra paths to python path (e.g., for loading extra source backends).
53	for path in bootstrap_options.pythonpath:	×
54	if path not in sys.path:	×
55	sys.path.append(path)	×
56	pkg_resources.fixup_namespace_packages(path)	×
57
58	# Resolve the actual Python code for any plugins. `sys.path` is modified as a side effect if
59	# plugins were configured.
60	backends_requirements = _collect_backends_requirements(bootstrap_options.backend_packages)	×
61	plugin_resolver.resolve(options_bootstrapper, env, backends_requirements)	×
62
63	# Load plugins and backends.
64	return load_backends_and_plugins(	×
65	bootstrap_options.plugins,
66	bootstrap_options.backend_packages,
67	)
68
69
70	def _collect_backends_requirements(backends: list[str]) -> list[str]:	3✔
71	"""Collects backend package dependencies, in case those are declared in an adjacent
72	requirements.txt. Ignores any loading errors, assuming those will be later on handled by the
73	backends loader.
74
75	:param backends: An list of packages to load v2 backends requirements from.
76	"""
77	requirements = []	×
78
79	for backend_package in backends:	×
80	try:	×
81	backend_package_spec = importlib.util.find_spec(backend_package)	×
82	except ModuleNotFoundError:	×
83	continue	×
84
85	if backend_package_spec is None:	×
86	continue	×
87
88	if backend_package_spec.origin is None:	×
89	logger.warning(	×
90	f"Can not check requirements for backend: '{backend_package}'. A __init__.py file is probably missing."
91	)
92	continue	×
93
94	requirements_txt_file_path = Path(backend_package_spec.origin).parent.joinpath(	×
95	"requirements.txt"
96	)
97	if requirements_txt_file_path.exists():	×
98	content = requirements_txt_file_path.read_text()	×
99	backend_package_requirements = [	×
100	str(r)
101	for r in parse_requirements_file(content, rel_path=str(requirements_txt_file_path))
102	]
103	requirements.extend(backend_package_requirements)	×
104
105	return requirements	×
106
107
108	def create_bootstrap_scheduler(	3✔
109	options_bootstrapper: OptionsBootstrapper, executor: PyExecutor
110	) -> BootstrapScheduler:
111	bc_builder = BuildConfiguration.Builder()	×
112	# To load plugins, we only need access to the Python/PEX rules.
113	load_build_configuration_from_source(bc_builder, ["pants.backend.python"])	×
114	# And to plugin-loading-specific rules.
115	bc_builder.register_rules("_dummy_for_bootstrapping_", plugin_resolver_rules())	×
116	# We allow unrecognized options to defer any option error handling until post-bootstrap.
117	bc_builder.allow_unknown_options()	×
118	return BootstrapScheduler(	×
119	EngineInitializer.setup_graph(
120	options_bootstrapper.bootstrap_options.for_global_scope(),
121	bc_builder.create(),
122	DynamicRemoteOptions.disabled(),
123	executor,
124	is_bootstrap=True,
125	).scheduler
126	)
127
128
129	class OptionsInitializer:	3✔
130	"""Initializes BuildConfiguration and Options instances given an OptionsBootstrapper.
131
132	NB: Although this constructor takes an instance of the OptionsBootstrapper, it is
133	used only to construct a "bootstrap" Scheduler: actual calls to resolve plugins use a
134	per-request instance of the OptionsBootstrapper, which might request different plugins.
135
136	TODO: We would eventually like to use the bootstrap Scheduler to construct the
137	OptionsBootstrapper as well, but for now we do the opposite thing, and the Scheduler is
138	used only to resolve plugins.
139	see https://github.com/pantsbuild/pants/pull/11568
140	"""
141
142	def __init__(	3✔
143	self,
144	options_bootstrapper: OptionsBootstrapper,
145	executor: PyExecutor,
146	) -> None:
147	self._bootstrap_scheduler = create_bootstrap_scheduler(options_bootstrapper, executor)	×
148	self._plugin_resolver = PluginResolver(self._bootstrap_scheduler)	×
149
150	def build_config(	3✔
151	self,
152	options_bootstrapper: OptionsBootstrapper,
153	env: CompleteEnvironmentVars,
154	) -> BuildConfiguration:
155	return _initialize_build_configuration(self._plugin_resolver, options_bootstrapper, env)	×
156
157	def options(	3✔
158	self,
159	options_bootstrapper: OptionsBootstrapper,
160	env: CompleteEnvironmentVars,
161	build_config: BuildConfiguration,
162	union_membership: UnionMembership,
163	*,
164	raise_: bool,
165	) -> Options:
166	with self.handle_unknown_flags(options_bootstrapper, env, raise_=raise_):	×
167	return options_bootstrapper.full_options(	×
168	build_config.known_scope_infos, union_membership, build_config.allow_unknown_options
169	)
170
171	@contextmanager	3✔
172	def handle_unknown_flags(	3✔
173	self,
174	options_bootstrapper: OptionsBootstrapper,
175	env: CompleteEnvironmentVars,
176	*,
177	raise_: bool,
178	) -> Iterator[None]:
179	"""If there are any unknown flags, print "Did you mean?" and possibly error."""
180	try:	×
181	yield	×
182	except UnknownFlagsError as err:	×
183	build_config = _initialize_build_configuration(	×
184	self._plugin_resolver, options_bootstrapper, env
185	)
186	# We need an options instance in order to get "did you mean" suggestions, but we know
187	# there are bad flags in the args, so we generate options with no flags.
188	no_arg_bootstrapper = dataclasses.replace(	×
189	options_bootstrapper, args=("dummy_first_arg",)
190	)
191	options = no_arg_bootstrapper.full_options(	×
192	build_config.known_scope_infos,
193	union_membership=UnionMembership.empty(),
194	)
195	FlagErrorHelpPrinter(options).handle_unknown_flags(err)	×
196	if raise_:	×
197	raise err	×

pantsbuild / pants / 18252174847

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