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import importlib
import importlib.metadata
import importlib.util
import json
import os
import platform
import re
import shutil
import subprocess
import sys
import tempfile
import urllib.error
import urllib.request
from pathlib import Path
_SDK_PYTHON_ROOT = str(Path(__file__).resolve().parent)
if _SDK_PYTHON_ROOT not in sys.path:
sys.path.insert(0, _SDK_PYTHON_ROOT)
from release_version import ( # noqa: E402
codex_release_tag as _release_tag,
normalize_codex_version as _normalized_package_version,
)
PACKAGE_NAME = "openai-codex-cli-bin"
SDK_PACKAGE_NAME = "openai-codex"
REPO_SLUG = "openai/codex"
class RuntimeSetupError(RuntimeError):
pass
def pinned_runtime_version() -> str:
"""Return the exact runtime version pinned by the SDK package dependency."""
source_pin = _source_tree_runtime_dependency_version()
if source_pin is not None:
return _normalized_package_version(source_pin)
try:
installed_pin = _installed_sdk_runtime_dependency_version()
except importlib.metadata.PackageNotFoundError as exc:
raise RuntimeSetupError(
f"Unable to resolve {SDK_PACKAGE_NAME} metadata for runtime pinning."
) from exc
if installed_pin is None:
raise RuntimeSetupError(
f"Unable to resolve {PACKAGE_NAME} dependency pin from {SDK_PACKAGE_NAME}."
)
return _normalized_package_version(installed_pin)
def ensure_runtime_package_installed(
python_executable: str | Path,
sdk_python_dir: Path,
install_target: Path | None = None,
) -> str:
requested_version = pinned_runtime_version()
installed_version = None
if install_target is None:
installed_version = _installed_runtime_version(python_executable)
normalized_requested = _normalized_package_version(requested_version)
if (
installed_version is not None
and _normalized_package_version(installed_version) == normalized_requested
):
return requested_version
with tempfile.TemporaryDirectory(prefix="codex-python-runtime-") as temp_root_str:
temp_root = Path(temp_root_str)
archive_path = _download_release_archive(requested_version, temp_root)
staged_runtime_dir = _stage_runtime_package(
sdk_python_dir,
requested_version,
archive_path,
temp_root / "runtime-stage",
)
_install_runtime_package(python_executable, staged_runtime_dir, install_target)
if install_target is not None:
return requested_version
if Path(python_executable).resolve() == Path(sys.executable).resolve():
importlib.invalidate_caches()
installed_version = _installed_runtime_version(python_executable)
if (
installed_version is None
or _normalized_package_version(installed_version) != normalized_requested
):
raise RuntimeSetupError(
f"Expected {PACKAGE_NAME} {requested_version} in {python_executable}, "
f"but found {installed_version!r} after installation."
)
return requested_version
def platform_asset_name() -> str:
system = platform.system().lower()
machine = platform.machine().lower()
if system == "darwin":
if machine in {"arm64", "aarch64"}:
return "codex-package-aarch64-apple-darwin.tar.gz"
if machine in {"x86_64", "amd64"}:
return "codex-package-x86_64-apple-darwin.tar.gz"
elif system == "linux":
if machine in {"aarch64", "arm64"}:
return "codex-package-aarch64-unknown-linux-musl.tar.gz"
if machine in {"x86_64", "amd64"}:
return "codex-package-x86_64-unknown-linux-musl.tar.gz"
elif system == "windows":
if machine in {"aarch64", "arm64"}:
return "codex-package-aarch64-pc-windows-msvc.tar.gz"
if machine in {"x86_64", "amd64"}:
return "codex-package-x86_64-pc-windows-msvc.tar.gz"
raise RuntimeSetupError(
f"Unsupported runtime artifact platform: system={platform.system()!r}, "
f"machine={platform.machine()!r}"
)
def _installed_runtime_version(python_executable: str | Path) -> str | None:
snippet = (
"import importlib.metadata, json, sys\n"
"try:\n"
" from codex_cli_bin import bundled_codex_path\n"
" bundled_codex_path()\n"
f" print(json.dumps({{'version': importlib.metadata.version({PACKAGE_NAME!r})}}))\n"
"except Exception:\n"
" sys.exit(1)\n"
)
result = subprocess.run(
[str(python_executable), "-c", snippet],
text=True,
capture_output=True,
check=False,
)
if result.returncode != 0:
return None
return json.loads(result.stdout)["version"]
def _release_metadata(version: str) -> dict[str, object]:
release_tag = _release_tag(version)
url = f"https://api.github.com/repos/{REPO_SLUG}/releases/tags/{release_tag}"
token = _github_token()
attempts = [True, False] if token is not None else [False]
last_error: urllib.error.HTTPError | None = None
for include_auth in attempts:
headers = {
"Accept": "application/vnd.github+json",
"User-Agent": "codex-python-runtime-setup",
}
if include_auth and token is not None:
headers["Authorization"] = f"Bearer {token}"
request = urllib.request.Request(url, headers=headers)
try:
with urllib.request.urlopen(request) as response:
return json.load(response)
except urllib.error.HTTPError as exc:
last_error = exc
if include_auth and exc.code == 401:
continue
break
assert last_error is not None
raise RuntimeSetupError(
f"Failed to resolve release metadata for {release_tag} from {REPO_SLUG}: "
f"{last_error.code} {last_error.reason}"
) from last_error
def _download_release_archive(version: str, temp_root: Path) -> Path:
asset_name = platform_asset_name()
archive_path = temp_root / asset_name
release_tag = _release_tag(version)
browser_download_url = (
f"https://github.com/{REPO_SLUG}/releases/download/{release_tag}/{asset_name}"
)
request = urllib.request.Request(
browser_download_url,
headers={"User-Agent": "codex-python-runtime-setup"},
)
try:
with urllib.request.urlopen(request) as response, archive_path.open("wb") as fh:
shutil.copyfileobj(response, fh)
return archive_path
except urllib.error.HTTPError:
pass
metadata = _release_metadata(version)
assets = metadata.get("assets")
if not isinstance(assets, list):
raise RuntimeSetupError(f"Release {release_tag} returned malformed assets metadata.")
asset = next(
(item for item in assets if isinstance(item, dict) and item.get("name") == asset_name),
None,
)
if asset is None:
raise RuntimeSetupError(
f"Release {release_tag} does not contain asset {asset_name} for this platform."
)
api_url = asset.get("url")
if not isinstance(api_url, str):
api_url = None
if api_url is not None:
token = _github_token()
if token is not None:
request = urllib.request.Request(
api_url,
headers=_github_api_headers("application/octet-stream"),
)
try:
with (
urllib.request.urlopen(request) as response,
archive_path.open("wb") as fh,
):
shutil.copyfileobj(response, fh)
return archive_path
except urllib.error.HTTPError:
pass
if shutil.which("gh") is None:
raise RuntimeSetupError(
f"Unable to download {asset_name} for rust-v{version}. "
"Provide GH_TOKEN/GITHUB_TOKEN or install/authenticate GitHub CLI."
)
try:
subprocess.run(
[
"gh",
"release",
"download",
release_tag,
"--repo",
REPO_SLUG,
"--pattern",
asset_name,
"--dir",
str(temp_root),
],
check=True,
text=True,
capture_output=True,
)
except subprocess.CalledProcessError as exc:
raise RuntimeSetupError(
f"gh release download failed for {release_tag} asset {asset_name}.\n"
f"STDOUT:\n{exc.stdout}\nSTDERR:\n{exc.stderr}"
) from exc
return archive_path
def _stage_runtime_package(
sdk_python_dir: Path,
runtime_version: str,
runtime_package_archive: Path,
staging_dir: Path,
) -> Path:
script_module = _load_update_script_module(sdk_python_dir)
return script_module.stage_python_runtime_package( # type: ignore[no-any-return]
staging_dir,
runtime_version,
runtime_package_archive.resolve(),
)
def _install_runtime_package(
python_executable: str | Path,
staged_runtime_dir: Path,
install_target: Path | None,
) -> None:
args = [
str(python_executable),
"-m",
"pip",
"install",
"--force-reinstall",
"--no-deps",
]
if install_target is not None:
install_target.mkdir(parents=True, exist_ok=True)
args.extend(["--target", str(install_target)])
args.append(str(staged_runtime_dir))
try:
subprocess.run(
args,
check=True,
text=True,
capture_output=True,
)
except subprocess.CalledProcessError as exc:
raise RuntimeSetupError(
f"Failed to install {PACKAGE_NAME} into {python_executable} from {staged_runtime_dir}.\n"
f"STDOUT:\n{exc.stdout}\nSTDERR:\n{exc.stderr}"
) from exc
def _load_update_script_module(sdk_python_dir: Path):
script_path = sdk_python_dir / "scripts" / "update_sdk_artifacts.py"
spec = importlib.util.spec_from_file_location("update_sdk_artifacts", script_path)
if spec is None or spec.loader is None:
raise RuntimeSetupError(f"Failed to load {script_path}")
module = importlib.util.module_from_spec(spec)
sys.modules[spec.name] = module
spec.loader.exec_module(module)
return module
def _github_api_headers(accept: str) -> dict[str, str]:
headers = {
"Accept": accept,
"User-Agent": "codex-python-runtime-setup",
}
token = _github_token()
if token is not None:
headers["Authorization"] = f"Bearer {token}"
return headers
def _github_token() -> str | None:
for env_name in ("GH_TOKEN", "GITHUB_TOKEN"):
token = os.environ.get(env_name)
if token:
return token
return None
def _source_tree_runtime_dependency_version() -> str | None:
"""Read the runtime dependency pin when the SDK is running from a checkout."""
pyproject_path = Path(__file__).resolve().parent / "pyproject.toml"
if not pyproject_path.exists():
return None
match = re.search(_runtime_dependency_pin_pattern(), pyproject_path.read_text())
if match is None:
return None
return match.group(1)
def _installed_sdk_runtime_dependency_version() -> str | None:
"""Read the runtime dependency pin from installed package metadata."""
requirements = importlib.metadata.requires(SDK_PACKAGE_NAME) or []
for requirement in requirements:
match = re.search(_runtime_dependency_pin_pattern(), requirement)
if match is not None:
return match.group(1)
return None
def _runtime_dependency_pin_pattern() -> str:
"""Match the exact runtime dependency pin in TOML and wheel metadata."""
return rf'{re.escape(PACKAGE_NAME)}\s*==\s*"?([^",;\s]+)"?'
__all__ = [
"PACKAGE_NAME",
"SDK_PACKAGE_NAME",
"RuntimeSetupError",
"ensure_runtime_package_installed",
"pinned_runtime_version",
"platform_asset_name",
]
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