Python watchdog.events.RegexMatchingEventHandler() Examples

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Example #1

Source File: develop-module.py From cjworkbench with GNU Affero General Public License v3.0

4 votes

def main(directory):
    cjwstate.modules.init_module_system()
    path = pathlib.Path(directory)

    def reload():
        if os.path.isdir(path / "locale"):
            try:
                logger.info(f"Extracting i18n messages...")
                extract_module_messages(path)
            except Exception:
                logger.exception("Error extracting module translations")
                return

        try:
            logger.info(f"Importing module...")
            import_module_from_directory(path)
        except Exception:
            logger.exception("Error loading module")

    want_reload = False

    class ReloadEventHandler(RegexMatchingEventHandler):
        def on_any_event(self, ev):
            nonlocal want_reload
            want_reload = True

    regexes = [".*\\.(py|json|yaml|html|po|pot)"]

    event_handler = ReloadEventHandler(regexes=regexes)
    observer = Observer()
    observer.schedule(event_handler, directory, recursive=True)
    observer.start()

    reload()

    try:
        while True:
            time.sleep(0.05)  # 50ms
            # Call `reload()` if Watchdog has notified us in the past 50ms.
            if want_reload:
                reload()
                want_reload = False
    except KeyboardInterrupt:
        observer.stop()
    observer.join()