98 lines
3.5 KiB
Python
98 lines
3.5 KiB
Python
# Copyright 2011 Yesudeep Mangalapilly <yesudeep@gmail.com>
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# Copyright 2012 Google, Inc & contributors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""
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:module: libs.watchdog.observers
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:synopsis: Observer that picks a native implementation if available.
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:author: yesudeep@google.com (Yesudeep Mangalapilly)
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:author: contact@tiger-222.fr (Mickaël Schoentgen)
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Classes
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=======
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.. autoclass:: Observer
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:members:
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:show-inheritance:
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:inherited-members:
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Observer thread that schedules watching directories and dispatches
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calls to event handlers.
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You can also import platform specific classes directly and use it instead
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of :class:`Observer`. Here is a list of implemented observer classes.:
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============== ================================ ==============================
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Class Platforms Note
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============== ================================ ==============================
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|Inotify| Linux 2.6.13+ ``inotify(7)`` based observer
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|FSEvents| macOS FSEvents based observer
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|Kqueue| macOS and BSD with kqueue(2) ``kqueue(2)`` based observer
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|WinApi| MS Windows Windows API-based observer
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|Polling| Any fallback implementation
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============== ================================ ==============================
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.. |Inotify| replace:: :class:`.inotify.InotifyObserver`
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.. |FSEvents| replace:: :class:`.fsevents.FSEventsObserver`
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.. |Kqueue| replace:: :class:`.kqueue.KqueueObserver`
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.. |WinApi| replace:: :class:`.read_directory_changes.WindowsApiObserver`
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.. |Polling| replace:: :class:`.polling.PollingObserver`
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"""
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from __future__ import annotations
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import sys
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import warnings
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from libs.watchdog.utils import UnsupportedLibc
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from .api import BaseObserverSubclassCallable
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Observer: BaseObserverSubclassCallable
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if sys.platform.startswith("linux"):
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try:
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from .inotify import InotifyObserver as Observer
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except UnsupportedLibc:
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from .polling import PollingObserver as Observer
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elif sys.platform.startswith("darwin"):
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try:
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from .fsevents import FSEventsObserver as Observer
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except Exception:
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try:
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from .kqueue import KqueueObserver as Observer
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warnings.warn("Failed to import fsevents. Fall back to kqueue")
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except Exception:
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from .polling import PollingObserver as Observer
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warnings.warn("Failed to import fsevents and kqueue. Fall back to polling.")
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elif sys.platform in ("dragonfly", "freebsd", "netbsd", "openbsd", "bsd"):
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from .kqueue import KqueueObserver as Observer
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elif sys.platform.startswith("win"):
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try:
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from .read_directory_changes import WindowsApiObserver as Observer
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except Exception:
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from .polling import PollingObserver as Observer
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warnings.warn("Failed to import read_directory_changes. Fall back to polling.")
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else:
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from .polling import PollingObserver as Observer
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__all__ = ["Observer"]
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