Use WatchGod instead of Custom File Watching Solution

[rmorshea]

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Current Situation

Currently we use a custom built file watching solution when running examples locally. However there are already great tools for doing this.

Proposed Actions

We can just swap out our solution for watchgod.

[Archmonger]

I would just like to point out, if idom.run() is supposed to automatically refresh on file changes, then that is not working under Windows 10.

[rmorshea]

It doesn't because Sanic isn't run in debug mode by default. This is mostly about a dev tool I have for running examples from the docs.

[acivitillo]

I didn't know this was supposed to work, I built my own watching script for developing in idom:

import time
from watchdog.observers import Observer
from watchdog.events import PatternMatchingEventHandler
import subprocess


class ScanPyFiles:
    def __init__(self, process: subprocess, cmd: str):
        self.process = process
        self.event_handler = PatternMatchingEventHandler(
            patterns=["*.py"], ignore_patterns=[], ignore_directories=True
        )
        self.event_handler.on_any_event = self.on_any_event
        self.observer = Observer()
        self.observer.schedule(self.event_handler, ".", recursive=True)
        self.observer.start()

    def on_any_event(self, event):
        subprocess.Popen("TASKKILL /F /PID {pid} /T".format(pid=self.process.pid))
        self.process = subprocess.Popen(cmd, shell=True)
        print("Server Restarted")

    def stop(self):
        self.observer.stop()
        self.observer.join()


cmd = "python3 run_app.py"
process = subprocess.Popen(cmd, shell=True)
scan_py_files = ScanPyFiles(process, cmd)

try:
    while True:
        time.sleep(1)
except KeyboardInterrupt:
    print("Ouch !!! Keyboard interrupt received.")

scan_py_files.stop()