diff options
Diffstat (limited to 'pre_commit/languages/golang.py')
| -rw-r--r-- | pre_commit/languages/golang.py | 186 |
1 files changed, 122 insertions, 64 deletions
diff --git a/pre_commit/languages/golang.py b/pre_commit/languages/golang.py index a5f9dba..3c4b652 100644 --- a/pre_commit/languages/golang.py +++ b/pre_commit/languages/golang.py @@ -1,58 +1,129 @@ from __future__ import annotations import contextlib +import functools +import json import os.path +import platform +import shutil import sys +import tarfile +import tempfile +import urllib.error +import urllib.request +import zipfile +from typing import ContextManager from typing import Generator +from typing import IO +from typing import Protocol from typing import Sequence import pre_commit.constants as C -from pre_commit import git from pre_commit.envcontext import envcontext from pre_commit.envcontext import PatchesT from pre_commit.envcontext import Var -from pre_commit.hook import Hook from pre_commit.languages import helpers from pre_commit.prefix import Prefix -from pre_commit.util import clean_path_on_failure from pre_commit.util import cmd_output -from pre_commit.util import cmd_output_b from pre_commit.util import rmtree ENVIRONMENT_DIR = 'golangenv' -get_default_version = helpers.basic_get_default_version health_check = helpers.basic_health_check +run_hook = helpers.basic_run_hook +_ARCH_ALIASES = { + 'x86_64': 'amd64', + 'i386': '386', + 'aarch64': 'arm64', + 'armv8': 'arm64', + 'armv7l': 'armv6l', +} +_ARCH = platform.machine().lower() +_ARCH = _ARCH_ALIASES.get(_ARCH, _ARCH) + + +class ExtractAll(Protocol): + def extractall(self, path: str) -> None: ... + + +if sys.platform == 'win32': # pragma: win32 cover + _EXT = 'zip' + + def _open_archive(bio: IO[bytes]) -> ContextManager[ExtractAll]: + return zipfile.ZipFile(bio) +else: # pragma: win32 no cover + _EXT = 'tar.gz' + + def _open_archive(bio: IO[bytes]) -> ContextManager[ExtractAll]: + return tarfile.open(fileobj=bio) + + +@functools.lru_cache(maxsize=1) +def get_default_version() -> str: + if helpers.exe_exists('go'): + return 'system' + else: + return C.DEFAULT + + +def get_env_patch(venv: str, version: str) -> PatchesT: + if version == 'system': + return ( + ('PATH', (os.path.join(venv, 'bin'), os.pathsep, Var('PATH'))), + ) -def get_env_patch(venv: str) -> PatchesT: return ( - ('PATH', (os.path.join(venv, 'bin'), os.pathsep, Var('PATH'))), + ('GOROOT', os.path.join(venv, '.go')), + ( + 'PATH', ( + os.path.join(venv, 'bin'), os.pathsep, + os.path.join(venv, '.go', 'bin'), os.pathsep, Var('PATH'), + ), + ), ) -@contextlib.contextmanager -def in_env(prefix: Prefix) -> Generator[None, None, None]: - envdir = prefix.path( - helpers.environment_dir(ENVIRONMENT_DIR, C.DEFAULT), - ) - with envcontext(get_env_patch(envdir)): - yield +@functools.lru_cache +def _infer_go_version(version: str) -> str: + if version != C.DEFAULT: + return version + resp = urllib.request.urlopen('https://go.dev/dl/?mode=json') + # TODO: 3.9+ .removeprefix('go') + return json.load(resp)[0]['version'][2:] -def guess_go_dir(remote_url: str) -> str: - if remote_url.endswith('.git'): - remote_url = remote_url[:-1 * len('.git')] - looks_like_url = ( - not remote_url.startswith('file://') and - ('//' in remote_url or '@' in remote_url) - ) - remote_url = remote_url.replace(':', '/') - if looks_like_url: - _, _, remote_url = remote_url.rpartition('//') - _, _, remote_url = remote_url.rpartition('@') - return remote_url +def _get_url(version: str) -> str: + os_name = platform.system().lower() + version = _infer_go_version(version) + return f'https://dl.google.com/go/go{version}.{os_name}-{_ARCH}.{_EXT}' + + +def _install_go(version: str, dest: str) -> None: + try: + resp = urllib.request.urlopen(_get_url(version)) + except urllib.error.HTTPError as e: # pragma: no cover + if e.code == 404: + raise ValueError( + f'Could not find a version matching your system requirements ' + f'(os={platform.system().lower()}; arch={_ARCH})', + ) from e + else: + raise else: - return 'unknown_src_dir' + with tempfile.TemporaryFile() as f: + shutil.copyfileobj(resp, f) + f.seek(0) + + with _open_archive(f) as archive: + archive.extractall(dest) + shutil.move(os.path.join(dest, 'go'), os.path.join(dest, '.go')) + + +@contextlib.contextmanager +def in_env(prefix: Prefix, version: str) -> Generator[None, None, None]: + envdir = helpers.environment_dir(prefix, ENVIRONMENT_DIR, version) + with envcontext(get_env_patch(envdir, version)): + yield def install_environment( @@ -60,42 +131,29 @@ def install_environment( version: str, additional_dependencies: Sequence[str], ) -> None: - helpers.assert_version_default('golang', version) - directory = prefix.path( - helpers.environment_dir(ENVIRONMENT_DIR, C.DEFAULT), - ) + env_dir = helpers.environment_dir(prefix, ENVIRONMENT_DIR, version) - with clean_path_on_failure(directory): - remote = git.get_remote_url(prefix.prefix_dir) - repo_src_dir = os.path.join(directory, 'src', guess_go_dir(remote)) + if version != 'system': + _install_go(version, env_dir) - # Clone into the goenv we'll create - cmd = ('git', 'clone', '--recursive', '.', repo_src_dir) - helpers.run_setup_cmd(prefix, cmd) - - if sys.platform == 'cygwin': # pragma: no cover - _, gopath, _ = cmd_output('cygpath', '-w', directory) - gopath = gopath.strip() - else: - gopath = directory - env = dict(os.environ, GOPATH=gopath) - env.pop('GOBIN', None) - cmd_output_b('go', 'install', './...', cwd=repo_src_dir, env=env) - for dependency in additional_dependencies: - cmd_output_b( - 'go', 'install', dependency, cwd=repo_src_dir, env=env, - ) - # Same some disk space, we don't need these after installation - rmtree(prefix.path(directory, 'src')) - pkgdir = prefix.path(directory, 'pkg') - if os.path.exists(pkgdir): # pragma: no cover (go<1.10) - rmtree(pkgdir) - - -def run_hook( - hook: Hook, - file_args: Sequence[str], - color: bool, -) -> tuple[int, bytes]: - with in_env(hook.prefix): - return helpers.run_xargs(hook, hook.cmd, file_args, color=color) + if sys.platform == 'cygwin': # pragma: no cover + gopath = cmd_output('cygpath', '-w', env_dir)[1].strip() + else: + gopath = env_dir + + env = dict(os.environ, GOPATH=gopath) + env.pop('GOBIN', None) + if version != 'system': + env['GOROOT'] = os.path.join(env_dir, '.go') + env['PATH'] = os.pathsep.join(( + os.path.join(env_dir, '.go', 'bin'), os.environ['PATH'], + )) + + helpers.run_setup_cmd(prefix, ('go', 'install', './...'), env=env) + for dependency in additional_dependencies: + helpers.run_setup_cmd(prefix, ('go', 'install', dependency), env=env) + + # save some disk space -- we don't need this after installation + pkgdir = os.path.join(env_dir, 'pkg') + if os.path.exists(pkgdir): # pragma: no branch (always true on windows?) + rmtree(pkgdir) |