Files
romm/backend/watcher.py
2023-11-14 09:14:27 -05:00

82 lines
2.5 KiB
Python

import os
from datetime import timedelta
from watchdog.observers import Observer
from watchdog.events import FileSystemEventHandler
from endpoints.scan import scan_platforms
from logger.logger import log
from tasks.utils import tasks_scheduler
from config import (
LIBRARY_BASE_PATH,
ENABLE_RESCAN_ON_FILESYSTEM_CHANGE,
RESCAN_ON_FILESYSTEM_CHANGE_DELAY,
)
from config.config_loader import config
path = (
config.HIGH_PRIO_STRUCTURE_PATH
if os.path.exists(config.HIGH_PRIO_STRUCTURE_PATH)
else LIBRARY_BASE_PATH
)
class EventHandler(FileSystemEventHandler):
def on_any_event(self, event):
if not ENABLE_RESCAN_ON_FILESYSTEM_CHANGE:
return
# Ignore .DS_Store files
if event.src_path.endswith(".DS_Store"):
return
# Ignore modified events
if event.event_type == "modified":
return
event_src = event.src_path.split(path)[-1]
platform_slug = event_src.split("/")[1]
log.info(f"Filesystem event: {event.event_type} {event_src}")
# Skip if a scan is already scheduled
for job in tasks_scheduler.get_jobs():
if job.func_name == "endpoints.scan.scan_platforms":
if job.args[0] == []:
log.info("Full rescan already scheduled")
return
if platform_slug in job.args[0]:
log.info(f"Scan already scheduled for {platform_slug}")
return
time_delta = timedelta(minutes=RESCAN_ON_FILESYSTEM_CHANGE_DELAY)
rescan_in_msg = f"rescanning in {RESCAN_ON_FILESYSTEM_CHANGE_DELAY} minutes."
# Any change to a platform directory should trigger a full rescan
if event.is_directory and event_src.count("/") == 1:
log.info(f"Platform directory changed, {rescan_in_msg}")
tasks_scheduler.enqueue_in(time_delta, scan_platforms, [])
else:
# Otherwise trigger a rescan for the specific platform
log.info(f"Change detected in {platform_slug} folder, {rescan_in_msg}")
return tasks_scheduler.enqueue_in(
time_delta, scan_platforms, [platform_slug]
)
if __name__ == "__main__":
observer = Observer()
observer.schedule(EventHandler(), path, recursive=True)
observer.start()
log.info(f"Watching {path} for changes")
try:
while observer.is_alive():
observer.join(1)
finally:
observer.stop()
observer.join()