{{ message }}
forked from pre-commit/pre-commit
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathstore.py
More file actions
235 lines (195 loc) · 8.27 KB
/
Copy pathstore.py
File metadata and controls
235 lines (195 loc) · 8.27 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
from __future__ import annotations
import contextlib
import logging
import os.path
import sqlite3
import tempfile
from collections.abc import Callable
from collections.abc import Generator
from collections.abc import Sequence
import pre_commit.constants as C
from pre_commit import clientlib
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
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)
_LOCAL_RESOURCES = (
'Cargo.toml', 'main.go', 'go.mod', 'main.rs', '.npmignore',
'package.json', 'pre-commit-package-dev-1.rockspec',
'pre_commit_placeholder_package.gemspec', 'setup.py',
'environment.yml', 'Makefile.PL', 'pubspec.yaml',
'renv.lock', 'renv/activate.R', 'renv/LICENSE.renv',
)
def _make_local_repo(directory: str) -> None:
for resource in _LOCAL_RESOURCES:
resource_dirname, resource_basename = os.path.split(resource)
contents = resource_text(f'empty_template_{resource_basename}')
target_dir = os.path.join(directory, resource_dirname)
target_file = os.path.join(target_dir, resource_basename)
os.makedirs(target_dir, exist_ok=True)
with open(target_file, 'w') as f:
f.write(contents)
class Store:
get_default_directory = staticmethod(_get_default_directory)
def __init__(self, directory: str | None = 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_configs_table(db)
# Atomic file move
os.replace(tmpfile, self.db_path)
@contextlib.contextmanager
def exclusive_lock(self) -> Generator[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: str | None = None,
) -> Generator[sqlite3.Connection]:
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(deps)}'
else:
return repo
def _new_repo(
self,
repo: str,
ref: str,
deps: Sequence[str],
make_strategy: Callable[[str], None],
) -> str:
original_repo = repo
repo = self.db_repo_name(repo, deps)
def _get_result() -> str | None:
# 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],
)
clientlib.warn_for_stages_on_repo_init(original_repo, 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)
def make_local(self, deps: Sequence[str]) -> str:
return self._new_repo(
'local', C.LOCAL_REPO_VERSION, deps, _make_local_repo,
)
def _create_configs_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_configs_table(db)
db.execute('INSERT OR IGNORE INTO configs VALUES (?)', (path,))
You can’t perform that action at this time.