diff options
Diffstat (limited to 'testing/zipapp')
| -rw-r--r-- | testing/zipapp/Dockerfile | 14 | ||||
| -rwxr-xr-x | testing/zipapp/entry | 71 | ||||
| -rwxr-xr-x | testing/zipapp/make | 106 | ||||
| -rwxr-xr-x | testing/zipapp/python | 48 |
4 files changed, 239 insertions, 0 deletions
diff --git a/testing/zipapp/Dockerfile b/testing/zipapp/Dockerfile new file mode 100644 index 0000000..e21d5fe --- /dev/null +++ b/testing/zipapp/Dockerfile @@ -0,0 +1,14 @@ +FROM ubuntu:bionic +RUN : \ + && apt-get update \ + && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \ + python3 \ + python3-distutils \ + python3-venv \ + && apt-get clean \ + && rm -rf /var/lib/apt/lists/* + +ENV LANG=C.UTF-8 PATH=/venv/bin:$PATH +RUN : \ + && python3.6 -mvenv /venv \ + && pip install --no-cache-dir pip setuptools wheel no-manylinux --upgrade diff --git a/testing/zipapp/entry b/testing/zipapp/entry new file mode 100755 index 0000000..f0a345e --- /dev/null +++ b/testing/zipapp/entry @@ -0,0 +1,71 @@ +#!/usr/bin/env python3 +import os.path +import shutil +import stat +import sys +import tempfile +import zipfile + +from pre_commit.file_lock import lock + +CACHE_DIR = os.path.expanduser('~/.cache/pre-commit-zipapp') + + +def _make_executable(filename: str) -> None: + os.chmod(filename, os.stat(filename).st_mode | stat.S_IXUSR) + + +def _ensure_cache(zipf: zipfile.ZipFile, cache_key: str) -> str: + os.makedirs(CACHE_DIR, exist_ok=True) + + cache_dest = os.path.join(CACHE_DIR, cache_key) + lock_filename = os.path.join(CACHE_DIR, f'{cache_key}.lock') + + if os.path.exists(cache_dest): + return cache_dest + + with lock(lock_filename, blocked_cb=lambda: None): + # another process may have completed this work + if os.path.exists(cache_dest): + return cache_dest + + tmpdir = tempfile.mkdtemp(prefix=os.path.join(CACHE_DIR, '')) + try: + zipf.extractall(tmpdir) + # zip doesn't maintain permissions + _make_executable(os.path.join(tmpdir, 'python')) + _make_executable(os.path.join(tmpdir, 'python.exe')) + os.rename(tmpdir, cache_dest) + except BaseException: + shutil.rmtree(tmpdir) + raise + + return cache_dest + + +def main() -> int: + with zipfile.ZipFile(os.path.dirname(__file__)) as zipf: + with zipf.open('CACHE_KEY') as f: + cache_key = f.read().decode().strip() + + cache_dest = _ensure_cache(zipf, cache_key) + + if sys.platform != 'win32': + exe = os.path.join(cache_dest, 'python') + else: + exe = os.path.join(cache_dest, 'python.exe') + + cmd = (exe, '-mpre_commit', *sys.argv[1:]) + if sys.platform == 'win32': # https://bugs.python.org/issue19124 + import subprocess + + if sys.version_info < (3, 7): # https://bugs.python.org/issue25942 + return subprocess.Popen(cmd).wait() + else: + return subprocess.call(cmd) + else: + os.execvp(cmd[0], cmd) + + +if __name__ == '__main__': + exit(main()) diff --git a/testing/zipapp/make b/testing/zipapp/make new file mode 100755 index 0000000..a644946 --- /dev/null +++ b/testing/zipapp/make @@ -0,0 +1,106 @@ +#!/usr/bin/env python3 +import argparse +import base64 +import hashlib +import importlib.resources +import io +import os.path +import shutil +import subprocess +import tempfile +import zipapp +import zipfile + +HERE = os.path.dirname(os.path.realpath(__file__)) +IMG = 'make-pre-commit-zipapp' + + +def _msg(s: str) -> None: + print(f'\033[7m{s}\033[m') + + +def _exit_if_retv(*cmd: str) -> None: + if subprocess.call(cmd): + raise SystemExit(1) + + +def _check_no_shared_objects(wheeldir: str) -> None: + for zip_filename in os.listdir(wheeldir): + with zipfile.ZipFile(os.path.join(wheeldir, zip_filename)) as zipf: + for filename in zipf.namelist(): + if filename.endswith('.so') or '.so.' in filename: + raise AssertionError(zip_filename, filename) + + +def _add_shim(dest: str) -> None: + shim = os.path.join(HERE, 'python') + shutil.copy(shim, dest) + + bio = io.BytesIO() + with zipfile.ZipFile(bio, 'w') as zipf: + zipf.write(shim, arcname='__main__.py') + + with open(os.path.join(dest, 'python.exe'), 'wb') as f: + f.write(importlib.resources.read_binary('distlib', 't32.exe')) + f.write(b'#!py.exe -3\n') + f.write(bio.getvalue()) + + +def _write_cache_key(version: str, wheeldir: str, dest: str) -> None: + cache_hash = hashlib.sha256(f'{version}\n'.encode()) + for filename in sorted(os.listdir(wheeldir)): + cache_hash.update(f'{filename}\n'.encode()) + with open(os.path.join(HERE, 'python'), 'rb') as f: + cache_hash.update(f.read()) + with open(os.path.join(dest, 'CACHE_KEY'), 'wb') as f: + f.write(base64.urlsafe_b64encode(cache_hash.digest()).rstrip(b'=')) + + +def main() -> int: + parser = argparse.ArgumentParser() + parser.add_argument('version') + args = parser.parse_args() + + with tempfile.TemporaryDirectory() as tmpdir: + wheeldir = os.path.join(tmpdir, 'wheels') + os.mkdir(wheeldir) + + _msg('building podman image...') + _exit_if_retv('podman', 'build', '-q', '-t', IMG, HERE) + + _msg('populating wheels...') + _exit_if_retv( + 'podman', 'run', '--rm', '--volume', f'{wheeldir}:/wheels:rw', IMG, + 'pip', 'wheel', f'pre_commit=={args.version}', + '--wheel-dir', '/wheels', + ) + + _msg('validating wheels...') + _check_no_shared_objects(wheeldir) + + _msg('adding __main__.py...') + mainfile = os.path.join(tmpdir, '__main__.py') + shutil.copy(os.path.join(HERE, 'entry'), mainfile) + + _msg('adding shim...') + _add_shim(tmpdir) + + _msg('copying file_lock.py...') + file_lock_py = os.path.join(HERE, '../../pre_commit/file_lock.py') + file_lock_py_dest = os.path.join(tmpdir, 'pre_commit/file_lock.py') + os.makedirs(os.path.dirname(file_lock_py_dest)) + shutil.copy(file_lock_py, file_lock_py_dest) + + _msg('writing CACHE_KEY...') + _write_cache_key(args.version, wheeldir, tmpdir) + + filename = f'pre-commit-{args.version}.pyz' + _msg(f'writing {filename}...') + shebang = '/usr/bin/env python3' + zipapp.create_archive(tmpdir, filename, interpreter=shebang) + + return 0 + + +if __name__ == '__main__': + exit(main()) diff --git a/testing/zipapp/python b/testing/zipapp/python new file mode 100755 index 0000000..97c5928 --- /dev/null +++ b/testing/zipapp/python @@ -0,0 +1,48 @@ +#!/usr/bin/env python3 +"""A shim executable to put dependencies on sys.path""" +import argparse +import os.path +import runpy +import sys + +# an exe-zipapp will have a __file__ of shim.exe/__main__.py +EXE = __file__ if os.path.isfile(__file__) else os.path.dirname(__file__) +EXE = os.path.realpath(EXE) +HERE = os.path.dirname(EXE) +WHEELDIR = os.path.join(HERE, 'wheels') +SITE_DIRS = frozenset(('dist-packages', 'site-packages')) + + +def main() -> int: + parser = argparse.ArgumentParser(add_help=False) + parser.add_argument('-m') + args, rest = parser.parse_known_args() + + if args.m: + # try and remove site-packages from sys.path so our packages win + sys.path[:] = [ + p for p in sys.path + if os.path.split(p)[1] not in SITE_DIRS + ] + for wheel in sorted(os.listdir(WHEELDIR)): + sys.path.append(os.path.join(WHEELDIR, wheel)) + if args.m == 'pre_commit' or args.m.startswith('pre_commit.'): + sys.executable = EXE + sys.argv[1:] = rest + runpy.run_module(args.m, run_name='__main__', alter_sys=True) + return 0 + else: + cmd = (sys.executable, *sys.argv[1:]) + if sys.platform == 'win32': # https://bugs.python.org/issue19124 + import subprocess + + if sys.version_info < (3, 7): # https://bugs.python.org/issue25942 + return subprocess.Popen(cmd).wait() + else: + return subprocess.call(cmd) + else: + os.execvp(cmd[0], cmd) + + +if __name__ == '__main__': + exit(main()) |