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[PR #11222/c7f6a28d backport][stable-12] Add basic typing for module_utils (#11243)
Add basic typing for module_utils (#11222) * Add basic typing for module_utils. * Apply some suggestions. * Make pass again. * Add more types as suggested. * Normalize extra imports. * Add more type hints. * Improve typing. * Add changelog fragment. * Reduce changelog. * Apply suggestions from code review. * Fix typo. * Cleanup. * Improve types and make type checking happy. * Let's see whether older Pythons barf on this. * Revert "Let's see whether older Pythons barf on this." This reverts commit9973af3dbe. * Add noqa. --------- (cherry picked from commitc7f6a28d89) Co-authored-by: Felix Fontein <felix@fontein.de> Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>
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56 changed files with 725 additions and 469 deletions
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@ -11,9 +11,13 @@ import os
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import stat
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import time
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import fcntl
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import typing as t
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from contextlib import contextmanager
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if t.TYPE_CHECKING:
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from io import TextIOWrapper
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class LockTimeout(Exception):
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pass
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@ -27,11 +31,13 @@ class FileLock:
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unwanted and/or unexpected behaviour
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"""
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def __init__(self):
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self.lockfd = None
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def __init__(self) -> None:
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self.lockfd: TextIOWrapper | None = None
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@contextmanager
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def lock_file(self, path, tmpdir, lock_timeout=None):
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def lock_file(
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self, path: os.PathLike, tmpdir: os.PathLike, lock_timeout: int | float | None = None
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) -> t.Generator[None]:
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"""
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Context for lock acquisition
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"""
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@ -41,7 +47,9 @@ class FileLock:
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finally:
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self.unlock()
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def set_lock(self, path, tmpdir, lock_timeout=None):
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def set_lock(
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self, path: os.PathLike, tmpdir: os.PathLike, lock_timeout: int | float | None = None
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) -> t.Literal[True]:
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"""
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Create a lock file based on path with flock to prevent other processes
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using given path.
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@ -61,13 +69,13 @@ class FileLock:
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self.lockfd = open(lock_path, "w")
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if lock_timeout <= 0:
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if lock_timeout is not None and lock_timeout <= 0:
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fcntl.flock(self.lockfd, fcntl.LOCK_EX | fcntl.LOCK_NB)
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os.chmod(lock_path, stat.S_IWRITE | stat.S_IREAD)
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return True
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if lock_timeout:
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e_secs = 0
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e_secs: float = 0
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while e_secs < lock_timeout:
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try:
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fcntl.flock(self.lockfd, fcntl.LOCK_EX | fcntl.LOCK_NB)
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@ -86,7 +94,7 @@ class FileLock:
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return True
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def unlock(self):
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def unlock(self) -> t.Literal[True]:
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"""
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Make sure lock file is available for everyone and Unlock the file descriptor
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locked by set_lock
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