257 lines
9.2 KiB
Python
257 lines
9.2 KiB
Python
import contextlib
|
|
import logging
|
|
import os.path
|
|
import sqlite3
|
|
import tempfile
|
|
from typing import Callable
|
|
from typing import Generator
|
|
from typing import List
|
|
from typing import Optional
|
|
from typing import Sequence
|
|
from typing import Tuple
|
|
|
|
import pre_commit.constants as C
|
|
from pre_commit import file_lock
|
|
from pre_commit import git
|
|
from pre_commit.util import CalledProcessError
|
|
from pre_commit.util import clean_path_on_failure
|
|
from pre_commit.util import cmd_output_b
|
|
from pre_commit.util import resource_text
|
|
from pre_commit.util import rmtree
|
|
|
|
|
|
logger = logging.getLogger('pre_commit')
|
|
|
|
|
|
def _get_default_directory() -> str:
|
|
"""Returns the default directory for the Store. This is intentionally
|
|
underscored to indicate that `Store.get_default_directory` is the intended
|
|
way to get this information. This is also done so
|
|
`Store.get_default_directory` can be mocked in tests and
|
|
`_get_default_directory` can be tested.
|
|
"""
|
|
ret = os.environ.get('PRE_COMMIT_HOME') or os.path.join(
|
|
os.environ.get('XDG_CACHE_HOME') or os.path.expanduser('~/.cache'),
|
|
'pre-commit',
|
|
)
|
|
return os.path.realpath(ret)
|
|
|
|
|
|
class Store:
|
|
get_default_directory = staticmethod(_get_default_directory)
|
|
|
|
def __init__(self, directory: Optional[str] = None) -> None:
|
|
self.directory = directory or Store.get_default_directory()
|
|
self.db_path = os.path.join(self.directory, 'db.db')
|
|
self.readonly = (
|
|
os.path.exists(self.directory) and
|
|
not os.access(self.directory, os.W_OK)
|
|
)
|
|
|
|
if not os.path.exists(self.directory):
|
|
os.makedirs(self.directory, exist_ok=True)
|
|
with open(os.path.join(self.directory, 'README'), 'w') as f:
|
|
f.write(
|
|
'This directory is maintained by the pre-commit project.\n'
|
|
'Learn more: https://github.com/pre-commit/pre-commit\n',
|
|
)
|
|
|
|
if os.path.exists(self.db_path):
|
|
return
|
|
with self.exclusive_lock():
|
|
# Another process may have already completed this work
|
|
if os.path.exists(self.db_path): # pragma: no cover (race)
|
|
return
|
|
# To avoid a race where someone ^Cs between db creation and
|
|
# execution of the CREATE TABLE statement
|
|
fd, tmpfile = tempfile.mkstemp(dir=self.directory)
|
|
# We'll be managing this file ourselves
|
|
os.close(fd)
|
|
with self.connect(db_path=tmpfile) as db:
|
|
db.executescript(
|
|
'CREATE TABLE repos ('
|
|
' repo TEXT NOT NULL,'
|
|
' ref TEXT NOT NULL,'
|
|
' path TEXT NOT NULL,'
|
|
' PRIMARY KEY (repo, ref)'
|
|
');',
|
|
)
|
|
self._create_config_table(db)
|
|
|
|
# Atomic file move
|
|
os.replace(tmpfile, self.db_path)
|
|
|
|
@contextlib.contextmanager
|
|
def exclusive_lock(self) -> Generator[None, None, None]:
|
|
def blocked_cb() -> None: # pragma: no cover (tests are in-process)
|
|
logger.info('Locking pre-commit directory')
|
|
|
|
with file_lock.lock(os.path.join(self.directory, '.lock'), blocked_cb):
|
|
yield
|
|
|
|
@contextlib.contextmanager
|
|
def connect(
|
|
self,
|
|
db_path: Optional[str] = None,
|
|
) -> Generator[sqlite3.Connection, None, None]:
|
|
db_path = db_path or self.db_path
|
|
# sqlite doesn't close its fd with its contextmanager >.<
|
|
# contextlib.closing fixes this.
|
|
# See: https://stackoverflow.com/a/28032829/812183
|
|
with contextlib.closing(sqlite3.connect(db_path)) as db:
|
|
# this creates a transaction
|
|
with db:
|
|
yield db
|
|
|
|
@classmethod
|
|
def db_repo_name(cls, repo: str, deps: Sequence[str]) -> str:
|
|
if deps:
|
|
return f'{repo}:{",".join(sorted(deps))}'
|
|
else:
|
|
return repo
|
|
|
|
def _new_repo(
|
|
self,
|
|
repo: str,
|
|
ref: str,
|
|
deps: Sequence[str],
|
|
make_strategy: Callable[[str], None],
|
|
) -> str:
|
|
repo = self.db_repo_name(repo, deps)
|
|
|
|
def _get_result() -> Optional[str]:
|
|
# Check if we already exist
|
|
with self.connect() as db:
|
|
result = db.execute(
|
|
'SELECT path FROM repos WHERE repo = ? AND ref = ?',
|
|
(repo, ref),
|
|
).fetchone()
|
|
return result[0] if result else None
|
|
|
|
result = _get_result()
|
|
if result:
|
|
return result
|
|
with self.exclusive_lock():
|
|
# Another process may have already completed this work
|
|
result = _get_result()
|
|
if result: # pragma: no cover (race)
|
|
return result
|
|
|
|
logger.info(f'Initializing environment for {repo}.')
|
|
|
|
directory = tempfile.mkdtemp(prefix='repo', dir=self.directory)
|
|
with clean_path_on_failure(directory):
|
|
make_strategy(directory)
|
|
|
|
# Update our db with the created repo
|
|
with self.connect() as db:
|
|
db.execute(
|
|
'INSERT INTO repos (repo, ref, path) VALUES (?, ?, ?)',
|
|
[repo, ref, directory],
|
|
)
|
|
return directory
|
|
|
|
def _complete_clone(self, ref: str, git_cmd: Callable[..., None]) -> None:
|
|
"""Perform a complete clone of a repository and its submodules """
|
|
|
|
git_cmd('fetch', 'origin', '--tags')
|
|
git_cmd('checkout', ref)
|
|
git_cmd('submodule', 'update', '--init', '--recursive')
|
|
|
|
def _shallow_clone(self, ref: str, git_cmd: Callable[..., None]) -> None:
|
|
"""Perform a shallow clone of a repository and its submodules """
|
|
|
|
git_config = 'protocol.version=2'
|
|
git_cmd('-c', git_config, 'fetch', 'origin', ref, '--depth=1')
|
|
git_cmd('checkout', 'FETCH_HEAD')
|
|
git_cmd(
|
|
'-c', git_config, 'submodule', 'update', '--init', '--recursive',
|
|
'--depth=1',
|
|
)
|
|
|
|
def clone(self, repo: str, ref: str, deps: Sequence[str] = ()) -> str:
|
|
"""Clone the given url and checkout the specific ref."""
|
|
|
|
def clone_strategy(directory: str) -> None:
|
|
git.init_repo(directory, repo)
|
|
env = git.no_git_env()
|
|
|
|
def _git_cmd(*args: str) -> None:
|
|
cmd_output_b('git', *args, cwd=directory, env=env)
|
|
|
|
try:
|
|
self._shallow_clone(ref, _git_cmd)
|
|
except CalledProcessError:
|
|
self._complete_clone(ref, _git_cmd)
|
|
|
|
return self._new_repo(repo, ref, deps, clone_strategy)
|
|
|
|
LOCAL_RESOURCES = (
|
|
'Cargo.toml', 'main.go', 'go.mod', 'main.rs', '.npmignore',
|
|
'package.json', 'pre_commit_dummy_package.gemspec', 'setup.py',
|
|
'environment.yml', 'Makefile.PL',
|
|
)
|
|
|
|
def make_local(self, deps: Sequence[str]) -> str:
|
|
def make_local_strategy(directory: str) -> None:
|
|
for resource in self.LOCAL_RESOURCES:
|
|
contents = resource_text(f'empty_template_{resource}')
|
|
with open(os.path.join(directory, resource), 'w') as f:
|
|
f.write(contents)
|
|
|
|
env = git.no_git_env()
|
|
|
|
# initialize the git repository so it looks more like cloned repos
|
|
def _git_cmd(*args: str) -> None:
|
|
cmd_output_b('git', *args, cwd=directory, env=env)
|
|
|
|
git.init_repo(directory, '<<unknown>>')
|
|
_git_cmd('add', '.')
|
|
git.commit(repo=directory)
|
|
|
|
return self._new_repo(
|
|
'local', C.LOCAL_REPO_VERSION, deps, make_local_strategy,
|
|
)
|
|
|
|
def _create_config_table(self, db: sqlite3.Connection) -> None:
|
|
db.executescript(
|
|
'CREATE TABLE IF NOT EXISTS configs ('
|
|
' path TEXT NOT NULL,'
|
|
' PRIMARY KEY (path)'
|
|
');',
|
|
)
|
|
|
|
def mark_config_used(self, path: str) -> None:
|
|
if self.readonly: # pragma: win32 no cover
|
|
return
|
|
path = os.path.realpath(path)
|
|
# don't insert config files that do not exist
|
|
if not os.path.exists(path):
|
|
return
|
|
with self.connect() as db:
|
|
# TODO: eventually remove this and only create in _create
|
|
self._create_config_table(db)
|
|
db.execute('INSERT OR IGNORE INTO configs VALUES (?)', (path,))
|
|
|
|
def select_all_configs(self) -> List[str]:
|
|
with self.connect() as db:
|
|
self._create_config_table(db)
|
|
rows = db.execute('SELECT path FROM configs').fetchall()
|
|
return [path for path, in rows]
|
|
|
|
def delete_configs(self, configs: List[str]) -> None:
|
|
with self.connect() as db:
|
|
rows = [(path,) for path in configs]
|
|
db.executemany('DELETE FROM configs WHERE path = ?', rows)
|
|
|
|
def select_all_repos(self) -> List[Tuple[str, str, str]]:
|
|
with self.connect() as db:
|
|
return db.execute('SELECT repo, ref, path from repos').fetchall()
|
|
|
|
def delete_repo(self, db_repo_name: str, ref: str, path: str) -> None:
|
|
with self.connect() as db:
|
|
db.execute(
|
|
'DELETE FROM repos WHERE repo = ? and ref = ?',
|
|
(db_repo_name, ref),
|
|
)
|
|
rmtree(path)
|