watchdog 2.3.0

About watchmedo Tricks

watchmedo can read tricks.yaml files and execute tricks within them in response to file system events. Tricks are actually event handlers that subclass watchdog.tricks.Trick and are written by plugin authors. Trick classes are augmented with a few additional features that regular event handlers don’t need.

An example tricks.yaml file:

tricks:
- watchdog.tricks.LoggerTrick:
    patterns: ["*.py", "*.js"]
- watchmedo_webtricks.GoogleClosureTrick:
    patterns: ['*.js']
    hash_names: true
    mappings_format: json                  # json|yaml|python
    mappings_module: app/javascript_mappings
    suffix: .min.js
    compilation_level: advanced            # simple|advanced
    source_directory: app/static/js/
    destination_directory: app/public/js/
    files:
      index-page:
      - app/static/js/vendor/jquery*.js
      - app/static/js/base.js
      - app/static/js/index-page.js
      about-page:
      - app/static/js/vendor/jquery*.js
      - app/static/js/base.js
      - app/static/js/about-page/**/*.js

The directory containing the tricks.yaml file will be monitored. Each trick class is initialized with its corresponding keys in the tricks.yaml file as arguments and events are fed to an instance of this class as they arrive.

Installation Caveats

The watchmedo script depends on PyYAML which links with LibYAML, which brings a performance boost to the PyYAML parser. However, installing LibYAML is optional but recommended. On macOS, you can use homebrew to install LibYAML:

$ brew install libyaml

On Linux, use your favorite package manager to install LibYAML. Here’s how you do it on Ubuntu:

$ sudo apt install libyaml-dev

On Windows, please install PyYAML using the binaries they provide.

2.3.0

2023-02-23 • full history

• [inotify] Add support for IN_OPEN events: a FileOpenedEvent event will be fired (#941)

• [watchmedo] Add optional event debouncing for auto-restart, only restarting once if many events happen in quick succession (--debounce-interval) (#940)

• [watchmedo] Exit gracefully on KeyboardInterrupt exception (Ctrl+C) (#945)

• [watchmedo] Add option to not auto-restart the command after it exits (--no-restart-on-command-exit) (#946)

• Thanks to our beloved contributors: @BoboTiG, @dstaple, @taleinat, @cernekj

2.2.1

2023-01-01 • full history

• Enable mypy to discover type hints as specified in PEP 561 (#933)

• [ci] Set the expected Python version when building release files

• [ci] Update actions versions in use

• [watchmedo] [regression] Fix usage of missing signal.SIGHUP attribute on non-Unix OSes (#935)

• Thanks to our beloved contributors: @BoboTiG, @simon04, @piotrpdev

2.2.0

2022-12-05 • full history

• [build] Wheels are now available for Python 3.11 (#932)

• [documentation] HTML documentation builds are now tested for errors (#902)

• [documentation] Fix typos here, and there (#910)

• [fsevents2] The fsevents2 observer is now deprecated (#909)

• [tests] The error message returned by musl libc for error code -1 is now allowed (#923)

• [utils] Remove unnecessary code in dirsnapshot.py (#930)

• [watchmedo] Handle shutdown events from SIGHUP (#912)

• Thanks to our beloved contributors: @kurtmckee, @babymastodon, @QuantumEnergyE, @timgates42, @BoboTiG

2.1.9

2022-06-10 • full history

• [fsevents] Fix flakey test to assert that there are no errors when stopping the emitter.

• [inotify] Suppress occasional OSError: [Errno 9] Bad file descriptor at shutdown. (#805)

• [watchmedo] Make auto-restart restart the sub-process if it terminates. (#896)

• [watchmedo] Avoid zombie sub-processes when running shell-command without --wait. (#405)

• Thanks to our beloved contributors: @samschott, @taleinat, @altendky, @BoboTiG

2.1.8

2022-05-15 • full history

• Fix adding failed emitters on observer schedule. (#872)

• [inotify] Fix hang when unscheduling watch on a path in an unmounted filesystem. (#869)

• [watchmedo] Fix broken parsing of --kill-after argument for the auto-restart command. (#870)

• [watchmedo] Fix broken parsing of boolean arguments. (#887)

• [watchmedo] Fix broken parsing of commands from auto-restart, and shell-command. (#888)

• [watchmedo] Support setting verbosity level via -q/--quiet and -v/--verbose arguments. (#889)

• Thanks to our beloved contributors: @taleinat, @kianmeng, @palfrey, @IlayRosenberg, @BoboTiG

2.1.7

2022-03-25 • full history

• Eliminate timeout in waiting on event queue. (#861)

• [inotify] Fix not equality implementation for InotifyEvent. (#848)

• [watchmedo] Fix calling commands from within a Python script. (#879)

• [watchmedo] PyYAML is loaded only when strictly necessary. Simple usages of watchmedo are possible without the module being installed. (#847)

• Thanks to our beloved contributors: @sattlerc, @JanzenLiu, @BoboTiG

2.1.6

2021-10-01 • full history

• [bsd] Fixed returned paths in kqueue.py and restored the overall results of the test suite. (#842)

• [bsd] Updated FreeBSD CI support .(#841)

• [watchmedo] Removed the argh dependency in favor of the builtin argparse module. (#836)

• [watchmedo] Removed unexistant WindowsApiAsyncObserver references and --debug-force-winapi-async arguments.

• [watchmedo] Improved the help output.

• Thanks to our beloved contributors: @knobix, @AndreaRe9, @BoboTiG

2.1.5

2021-08-23 • full history

• Fix regression introduced in 2.1.4 (reverted “Allow overriding or adding custom event handlers to event dispatch map. (#814)”). (#830)

• Convert regexes of type str to list. (831)

• Thanks to our beloved contributors: @unique1o1, @BoboTiG

2.1.4

2021-08-19 • full history

• [watchmedo] Fix usage of os.setsid() and os.killpg() Unix-only functions. (#809)

• [mac] Fix missing FileModifiedEvent on permission or ownership changes of a file. (#815)

• [mac] Convert absolute watch path in FSEeventsEmitter with os.path.realpath(). (#822)

• Fix a possible AttributeError in SkipRepeatsQueue._put(). (#818)

• Allow overriding or adding custom event handlers to event dispatch map. (#814)

• Fix tests on big endian platforms. (#828)

• Thanks to our beloved contributors: @replabrobin, @BoboTiG, @SamSchott, @AndreiB97, @NiklasRosenstein, @ikokollari, @mgorny

2.1.3

2021-06-26 • full history

• Publish macOS arm64 and universal2 wheels. (#740)

• Thanks to our beloved contributors: @kainjow, @BoboTiG

2.1.2

2021-05-19 • full history

• [mac] Fix relative path handling for non-recursive watch. (#797)

• [windows] On PyPy, events happening right after start() were missed. Add a workaround for that. (#796)

• Thanks to our beloved contributors: @oprypin, @CCP-Aporia, @BoboTiG

2.1.1

2021-05-10 • full history

• [mac] Fix callback exceptions when the watcher is deleted but still receiving events (#786)

• Thanks to our beloved contributors: @rom1win, @BoboTiG, @CCP-Aporia

2.1.0

2021-05-04 • full history

• [inotify] Simplify libc loading (#776)

• [mac] Add support for non-recursive watches in FSEventsEmitter (#779)

• [watchmedo] Add support for --debug-force-* arguments to tricks (#781)

• Thanks to our beloved contributors: @CCP-Aporia, @aodj, @UnitedMarsupials, @BoboTiG

2.0.3

2021-04-22 • full history

• [mac] Use logger.debug() instead of logger.info() (#774)

• Updated documentation links (#777)

• Thanks to our beloved contributors: @globau, @imba-tjd, @BoboTiG

2.0.2

2021-02-22 • full history

• [mac] Add missing exception objects (#766)

• Thanks to our beloved contributors: @CCP-Aporia, @BoboTiG

2.0.1

2021-02-17 • full history

• [mac] Fix a segmentation fault when dealing with unicode paths (#763)

• Moved the CI from Travis-CI to GitHub Actions (#764)

• Thanks to our beloved contributors: @SamSchott, @BoboTiG

2.0.0

2021-02-11 • full history

• Avoid deprecated PyEval_InitThreads on Python 3.7+ (#746)

• [inotify] Add support for IN_CLOSE_WRITE events. A FileCloseEvent event will be fired. Note that IN_CLOSE_NOWRITE events are not handled to prevent much noise. (#184, #245, #280, #313, #690)

• [inotify] Allow to stop the emitter multiple times (#760)

• [mac] Support coalesced filesystem events (#734)

• [mac] Drop support for macOS 10.12 and earlier (#750)

• [mac] Fix an issue when renaming an item changes only the casing (#750)

• Thanks to our beloved contributors: @bstaletic, @lukassup, @ysard, @SamSchott, @CCP-Aporia, @BoboTiG

1.0.2

2020-12-18 • full history

• Wheels are published for GNU/Linux, macOS and Windows (#739)

• [mac] Fix missing event_id attribute in fsevents (#721)

• [mac] Return byte paths if a byte path was given in fsevents (#726)

• [mac] Add compatibility with old macOS versions (#733)

• Uniformize event for deletion of watched dir (#727)

• Thanks to our beloved contributors: @SamSchott, @CCP-Aporia, @di, @BoboTiG

1.0.1

2020-12-10 • Fix version with good metadatas.

1.0.0

2020-12-10 • full history

• Versioning is now following the semver

• Drop support for Python 2.7, 3.4 and 3.5

• [mac] Regression fixes for native fsevents (#717)

• [windows] winapi.BUFFER_SIZE now defaults to 64000 (instead of 2048) (#700)

• [windows] Introduced winapi.PATH_BUFFER_SIZE (defaults to 2048) to keep the old behavior with path-realted functions (#700)

• Use pathlib from the standard library, instead of pathtools (#556)

• Allow file paths on Unix that don’t follow the file system encoding (#703)

• Removed the long-time deprecated events.LoggingFileSystemEventHandler class, use LoggingEventHandler instead

• Thanks to our beloved contributors: @SamSchott, @bstaletic, @BoboTiG, @CCP-Aporia

0.10.4

2020-11-21 • full history

• Add logger parameter for the LoggingEventHandler (#676)

• Replace mutable default arguments with if None implementation (#677)

• Expand tests to Python 2.7 and 3.5-3.10 for GNU/Linux, macOS and Windows

• [mac] Performance improvements for the fsevents module (#680)

• [mac] Prevent compilation of watchdog_fsevents.c on non-macOS machines (#687)

• [watchmedo] Handle shutdown events from SIGTERM and SIGINT more reliably (#693)

• Thanks to our beloved contributors: @Sraw, @CCP-Aporia, @BoboTiG, @maybe-sybr

0.10.3

2020-06-25 • full history

• Ensure ObservedWatch.path is a string (#651)

• [inotify] Allow to monitor single file (#655)

• [inotify] Prevent raising an exception when a file in a monitored folder has no permissions (#669, #670)

• Thanks to our beloved contributors: @brant-ruan, @rec, @andfoy, @BoboTiG

0.10.2

2020-02-08 • full history

• Fixed the build_ext command on macOS Catalina (#628)

• Fixed the installation of macOS requirements on non-macOS OSes (#635)

• Refactored dispatch() method of FileSystemEventHandler, PatternMatchingEventHandler and RegexMatchingEventHandler

• [bsd] Improved tests support on non Windows/Linux platforms (#633, #639)

• [bsd] Added FreeBSD CI support (#532)

• [bsd] Restored full support (#638, #641)

• Thanks to our beloved contributors: @BoboTiG, @evilham, @danilobellini

0.10.1

2020-01-30 • full history

• Fixed Python 2.7 to 3.6 installation when the OS locale is set to POSIX (#615)

• Fixed the build_ext command on macOS (#618, #620)

• Moved requirements to setup.cfg (#617)

• [mac] Removed old C code for Python 2.5 in the fsevents C implementation

• [snapshot] Added EmptyDirectorySnapshot (#613)

• Thanks to our beloved contributors: @Ajordat, @tehkirill, @BoboTiG

0.10.0

2020-01-26 • full history

Breaking Changes

• Dropped support for Python 2.6, 3.2 and 3.3

• Emitters that failed to start are now removed

• [snapshot] Removed the deprecated walker_callback argument, use stat instead

• [watchmedo] The utility is no more installed by default but via the extra watchdog[watchmedo]

Other Changes

• Fixed several Python 3 warnings

• Identify synthesized events with is_synthetic attribute (#369)

• Use os.scandir() to improve memory usage (#503)

• [bsd] Fixed flavors of FreeBSD detection (#529)

• [bsd] Skip unprocessable socket files (#509)

• [inotify] Fixed events containing non-ASCII characters (#516)

• [inotify] Fixed the way OSError are re-raised (#377)

• [inotify] Fixed wrong source path after renaming a top level folder (#515)

• [inotify] Removed delay from non-move events (#477)

• [mac] Fixed a bug when calling FSEventsEmitter.stop() twice (#466)

• [mac] Support for unscheduling deleted watch (#541)

• [mac] Fixed missing field initializers and unused parameters in watchdog_fsevents.c

• [snapshot] Don’t walk directories without read permissions (#408)

• [snapshot] Fixed a race condition crash when a directory is swapped for a file (#513)

• [snasphot] Fixed an AttributeError about forgotten path_for_inode attr (#436)

• [snasphot] Added the ignore_device=False parameter to the ctor (597)

• [watchmedo] Fixed the path separator used (#478)

• [watchmedo] Fixed the use of yaml.load() for yaml.safe_load() (#453)

• [watchmedo] Handle all available signals (#549)

• [watchmedo] Added the --debug-force-polling argument (#404)

• [windows] Fixed issues when the observed directory is deleted (#570 and #601)

• [windows] WindowsApiEmitter made easier to subclass (#344)

• [windows] Use separate ctypes DLL instances

• [windows] Generate sub created events only if recursive=True (#454)

• Thanks to our beloved contributors: @BoboTiG, @LKleinNux, @rrzaripov, @wildmichael, @TauPan, @segevfiner, @petrblahos, @QuantumEnergyE, @jeffwidman, @kapsh, @nickoala, @petrblahos, @julianolf, @tonybaloney, @mbakiev, @pR0Ps, javaguirre, @skurfer, @exarkun, @joshuaskelly, @danilobellini, @Ajordat

0.9.0

2018-08-28 • full history

• Deleting the observed directory now emits a DirDeletedEvent event

• [bsd] Improved the platform detection (#378)

• [inotify] Fixed a crash when the root directory being watched by was deleted (#374)

• [inotify] Handle systems providing uClibc

• [linux] Fixed a possible DirDeletedEvent duplication when deleting a directory

• [mac] Fixed unicode path handling fsevents2.py (#298)

• [watchmedo] Added the --debug-force-polling argument (#336)

• [windows] Fixed the FILE_LIST_DIRECTORY constant (#376)

• Thanks to our beloved contributors: @vulpeszerda, @hpk42, @tamland, @senden9, @gorakhargosh, @nolsto, @mafrosis, @DonyorM, @anthrotype, @danilobellini, @pierregr, @ShinNoNoir, @adrpar, @gforcada, @pR0Ps, @yegorich, @dhke

0.8.3

2015-02-11 • full history

• Fixed the use of the root logger (#274)

• [inotify] Refactored libc loading and improved error handling in inotify_c.py

• [inotify] Fixed a possible unbound local error in inotify_c.py

• Thanks to our beloved contributors: @mmorearty, @tamland, @tony, @gorakhargosh

0.8.2

2014-10-29 • full history

• Event emitters are no longer started on schedule if Observer is not already running

• [mac] Fixed usued arguments to pass clang compilation (#265)

• [snapshot] Fixed a possible race condition crash on directory deletion (#281)

• [windows] Fixed an error when watching the same folder again (#270)

• Thanks to our beloved contributors: @tamland, @apetrone, @Falldog, @theospears

0.8.1

2014-07-28 • full history

• Fixed anon_inode descriptors leakage (#249)

• [inotify] Fixed thread stop dead lock (#250)

• Thanks to our beloved contributors: @Witos, @adiroiban, @tamland

0.8.0

2014-07-02 • full history

• Fixed argh deprecation warnings (#242)

• [snapshot] Methods returning internal stats info were replaced by mtime(), inode() and path() methods

• [snapshot] Deprecated the walker_callback argument

• [watchmedo] Fixed auto-restart to terminate all children processes (#225)

• [watchmedo] Added the --no-parallel argument (#227)

• [windows] Fixed the value of INVALID_HANDLE_VALUE (#123)

• [windows] Fixed octal usages to work with Python 3 as well (#223)

• Thanks to our beloved contributors: @tamland, @Ormod, @berdario, @cro, @BernieSumption, @pypingou, @gotcha, @tommorris, @frewsxcv