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import collections
import contextlib
import os
from typing import (
Iterator,
Mapping,
List,
Dict,
Optional,
)
from debputy.build_support.build_context import BuildContext
from debputy.build_support.buildsystem_detection import (
auto_detect_buildsystem,
)
from debputy.commands.debputy_cmd.context import CommandContext
from debputy.highlevel_manifest import HighLevelManifest
from debputy.manifest_parser.base_types import BuildEnvironmentDefinition
from debputy.plugin.debputy.to_be_api_types import BuildRule
from debputy.util import (
_error,
_info,
_non_verbose_info,
)
@contextlib.contextmanager
def in_build_env(build_env: BuildEnvironmentDefinition):
remove_unnecessary_env()
# Should possibly be per build
with _setup_build_env(build_env):
yield
def _set_stem_if_absent(stems: List[Optional[str]], idx: int, stem: str) -> None:
if stems[idx] is None:
stems[idx] = stem
def assign_stems(
build_rules: List[BuildRule],
manifest: HighLevelManifest,
) -> None:
if not build_rules:
return
if len(build_rules) == 1:
build_rules[0].auto_generated_stem = ""
return
debs = {p.name for p in manifest.all_packages if p.package_type == "deb"}
udebs = {p.name for p in manifest.all_packages if p.package_type == "udeb"}
deb_only_builds: List[int] = []
udeb_only_builds: List[int] = []
by_name_only_builds: Dict[str, List[int]] = collections.defaultdict(list)
stems = [rule.name for rule in build_rules]
reserved_stems = set(n for n in stems if n is not None)
for idx, rule in enumerate(build_rules):
stem = stems[idx]
if stem is not None:
continue
pkg_names = {p.name for p in rule.for_packages}
if pkg_names == debs:
deb_only_builds.append(idx)
elif pkg_names == udebs:
udeb_only_builds.append(idx)
if len(pkg_names) == 1:
pkg_name = next(iter(pkg_names))
by_name_only_builds[pkg_name].append(idx)
if "deb" not in reserved_stems and len(deb_only_builds) == 1:
_set_stem_if_absent(stems, deb_only_builds[0], "deb")
if "udeb" not in reserved_stems and len(udeb_only_builds) == 1:
_set_stem_if_absent(stems, udeb_only_builds[0], "udeb")
for pkg, idxs in by_name_only_builds.items():
if len(idxs) != 1 or pkg in reserved_stems:
continue
_set_stem_if_absent(stems, idxs[0], pkg)
for idx, rule in enumerate(build_rules):
stem = stems[idx]
if stem is None:
stem = f"bno_{idx}"
rule.auto_generated_stem = stem
_info(f"Assigned {rule.auto_generated_stem} [{stem}] to step {idx}")
def perform_builds(
context: CommandContext,
manifest: HighLevelManifest,
) -> None:
build_rules = manifest.build_rules
if build_rules is not None:
if not build_rules:
# Defined but empty disables the auto-detected build system
return
active_packages = frozenset(manifest.active_packages)
condition_context = manifest.source_condition_context
build_context = BuildContext.from_command_context(context)
assign_stems(build_rules, manifest)
for step_no, build_rule in enumerate(build_rules):
step_ref = (
f"step {step_no} [{build_rule.auto_generated_stem}]"
if build_rule.name is None
else f"step {step_no} [{build_rule.name}]"
)
if build_rule.for_packages.isdisjoint(active_packages):
_info(
f"Skipping build for {step_ref}: None of the relevant packages are being built"
)
continue
manifest_condition = build_rule.manifest_condition
if manifest_condition is not None and not manifest_condition.evaluate(
condition_context
):
_info(
f"Skipping build for {step_ref}: The condition clause evaluated to false"
)
continue
_info(f"Starting build for {step_ref}.")
with in_build_env(build_rule.environment):
try:
build_rule.run_build(build_context, manifest)
except (RuntimeError, AttributeError) as e:
if context.parsed_args.debug_mode:
raise e
_error(
f"An error occurred during build/install at {step_ref} (defined at {build_rule.attribute_path.path}): {str(e)}"
)
_info(f"Completed build for {step_ref}.")
else:
build_system = auto_detect_buildsystem(manifest)
if build_system:
_info(f"Auto-detected build system: {build_system.__class__.__name__}")
build_context = BuildContext.from_command_context(context)
with in_build_env(build_system.environment):
with in_build_env(build_system.environment):
build_system.run_build(
build_context,
manifest,
)
_non_verbose_info("Upstream builds completed successfully")
else:
_info("No build system was detected from the current plugin set.")
def remove_unnecessary_env() -> None:
vs = [
"XDG_CACHE_HOME",
"XDG_CONFIG_DIRS",
"XDG_CONFIG_HOME",
"XDG_DATA_HOME",
"XDG_DATA_DIRS",
"XDG_RUNTIME_DIR",
]
for v in vs:
if v in os.environ:
del os.environ[v]
# FIXME: Add custom HOME + XDG_RUNTIME_DIR
@contextlib.contextmanager
def _setup_build_env(build_env: BuildEnvironmentDefinition) -> Iterator[None]:
env_backup = dict(os.environ)
env = dict(env_backup)
had_delta = False
build_env.update_env(env)
if env != env_backup:
_set_env(env)
had_delta = True
_info("Updated environment to match build")
yield
if had_delta or env != env_backup:
_set_env(env_backup)
def _set_env(desired_env: Mapping[str, str]) -> None:
os_env = os.environ
for key in os_env.keys() | desired_env.keys():
desired_value = desired_env.get(key)
if desired_value is None:
try:
del os_env[key]
except KeyError:
pass
else:
os_env[key] = desired_value
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