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#!/usr/bin/env python3
import asyncio
import argparse
import dataclasses
import hashlib
import os
import re
import socket
import subprocess
import sys
import zipfile
from typing import List
def get_top() -> str:
path = '.'
while not os.path.isfile(os.path.join(path, 'build/soong/soong_ui.bash')):
if os.path.abspath(path) == '/':
sys.exit('Could not find android source tree root.')
path = os.path.join(path, '..')
return os.path.abspath(path)
_PRODUCT_REGEX = re.compile(r'([a-zA-Z_][a-zA-Z0-9_]*)(?:(?:-([a-zA-Z_][a-zA-Z0-9_]*))?-(user|userdebug|eng))?')
@dataclasses.dataclass(frozen=True)
class Product:
"""Represents a TARGET_PRODUCT and TARGET_BUILD_VARIANT."""
product: str
release: str
variant: str
def __post_init__(self):
if not _PRODUCT_REGEX.match(str(self)):
raise ValueError(f'Invalid product name: {self}')
def __str__(self):
return self.product + '-' + self.release + '-' + self.variant
async def run_make_nothing(product: Product, out_dir: str) -> bool:
"""Runs a build and returns if it succeeded or not."""
with open(os.path.join(out_dir, 'build.log'), 'wb') as f:
result = await asyncio.create_subprocess_exec(
'prebuilts/build-tools/linux-x86/bin/nsjail',
'-q',
'--cwd',
os.getcwd(),
'-e',
'-B',
'/',
'-B',
f'{os.path.abspath(out_dir)}:{os.path.join(os.getcwd(), "out")}',
'--time_limit',
'0',
'--skip_setsid',
'--keep_caps',
'--disable_clone_newcgroup',
'--disable_clone_newnet',
'--rlimit_as',
'soft',
'--rlimit_core',
'soft',
'--rlimit_cpu',
'soft',
'--rlimit_fsize',
'soft',
'--rlimit_nofile',
'soft',
'--proc_rw',
'--hostname',
socket.gethostname(),
'--',
'build/soong/soong_ui.bash',
'--make-mode',
f'TARGET_PRODUCT={product.product}',
f'TARGET_RELEASE={product.release}',
f'TARGET_BUILD_VARIANT={product.variant}',
'--skip-ninja',
'nothing', stdout=f, stderr=subprocess.STDOUT)
return await result.wait() == 0
SUBNINJA_OR_INCLUDE_REGEX = re.compile(rb'\n(?:include|subninja) ')
def find_subninjas_and_includes(contents) -> List[str]:
results = []
def get_path_from_directive(i):
j = contents.find(b'\n', i)
if j < 0:
path_bytes = contents[i:]
else:
path_bytes = contents[i:j]
path_bytes = path_bytes.removesuffix(b'\r')
path = path_bytes.decode()
if '$' in path:
sys.exit('includes/subninjas with variables are unsupported: '+path)
return path
if contents.startswith(b"include "):
results.append(get_path_from_directive(len(b"include ")))
elif contents.startswith(b"subninja "):
results.append(get_path_from_directive(len(b"subninja ")))
for match in SUBNINJA_OR_INCLUDE_REGEX.finditer(contents):
results.append(get_path_from_directive(match.end()))
return results
def transitively_included_ninja_files(out_dir: str, ninja_file: str, seen):
with open(ninja_file, 'rb') as f:
contents = f.read()
results = [ninja_file]
seen[ninja_file] = True
sub_files = find_subninjas_and_includes(contents)
for sub_file in sub_files:
sub_file = os.path.join(out_dir, sub_file.removeprefix('out/'))
if sub_file not in seen:
results.extend(transitively_included_ninja_files(out_dir, sub_file, seen))
return results
def hash_ninja_file(out_dir: str, ninja_file: str, hasher):
with open(ninja_file, 'rb') as f:
contents = f.read()
sub_files = find_subninjas_and_includes(contents)
hasher.update(contents)
for sub_file in sub_files:
hash_ninja_file(out_dir, os.path.join(out_dir, sub_file.removeprefix('out/')), hasher)
def hash_files(files: List[str]) -> str:
hasher = hashlib.md5()
for file in files:
with open(file, 'rb') as f:
hasher.update(f.read())
return hasher.hexdigest()
def dist_ninja_files(out_dir: str, zip_name: str, ninja_files: List[str]):
dist_dir = os.getenv('DIST_DIR', os.path.join(os.getenv('OUT_DIR', 'out'), 'dist'))
os.makedirs(dist_dir, exist_ok=True)
with open(os.path.join(dist_dir, zip_name), 'wb') as f:
with zipfile.ZipFile(f, mode='w') as zf:
for ninja_file in ninja_files:
zf.write(ninja_file, arcname=os.path.basename(out_dir)+'/out/' + os.path.relpath(ninja_file, out_dir))
async def main():
parser = argparse.ArgumentParser()
args = parser.parse_args()
os.chdir(get_top())
subprocess.check_call(['touch', 'build/soong/Android.bp'])
product = Product(
'aosp_cf_x86_64_phone',
'trunk_staging',
'userdebug',
)
os.environ['TARGET_PRODUCT'] = 'aosp_cf_x86_64_phone'
os.environ['TARGET_RELEASE'] = 'trunk_staging'
os.environ['TARGET_BUILD_VARIANT'] = 'userdebug'
out_dir1 = os.path.join(os.getenv('OUT_DIR', 'out'), 'determinism_test_out1')
out_dir2 = os.path.join(os.getenv('OUT_DIR', 'out'), 'determinism_test_out2')
os.makedirs(out_dir1, exist_ok=True)
os.makedirs(out_dir2, exist_ok=True)
success1, success2 = await asyncio.gather(
run_make_nothing(product, out_dir1),
run_make_nothing(product, out_dir2))
if not success1:
with open(os.path.join(out_dir1, 'build.log'), 'r') as f:
print(f.read(), file=sys.stderr)
sys.exit('build failed')
if not success2:
with open(os.path.join(out_dir2, 'build.log'), 'r') as f:
print(f.read(), file=sys.stderr)
sys.exit('build failed')
ninja_files1 = transitively_included_ninja_files(out_dir1, os.path.join(out_dir1, f'combined-{product.product}.ninja'), {})
ninja_files2 = transitively_included_ninja_files(out_dir2, os.path.join(out_dir2, f'combined-{product.product}.ninja'), {})
dist_ninja_files(out_dir1, 'determinism_test_files_1.zip', ninja_files1)
dist_ninja_files(out_dir2, 'determinism_test_files_2.zip', ninja_files2)
hash1 = hash_files(ninja_files1)
hash2 = hash_files(ninja_files2)
if hash1 != hash2:
sys.exit("ninja files were not deterministic! See disted determinism_test_files_1/2.zip")
print("Success, ninja files were deterministic")
if __name__ == "__main__":
asyncio.run(main())
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