mirror of
https://github.com/blakeblackshear/frigate.git
synced 2024-10-15 20:07:23 +02:00
57864f2be6
Generally eliminate the `while True` loops while waiting for a stop event and prefer to condition the loops on if the stop event is set, blocking on that where it makes sense. This generally comes in 3 flavors. First and simplest, when there is a sleep and the stop event is the only thing the loop blocks on, instead do a check using `stop_event.wait(timeout)` to instead block on the stop event for the designated amount of time. Second, when there is a different event that is blocking in the loop, condition the loop on `stop_event.is_set()` rather than breaking when it is set. Finally, when there is a separate internal condition that requires a counter, have the loop iterate over the counter and use `if stop_event.wait(timeout)` internal to the loop.
129 lines
3.8 KiB
Python
129 lines
3.8 KiB
Python
import datetime
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import itertools
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import json
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import logging
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import os
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import queue
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import subprocess as sp
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import threading
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import time
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from collections import defaultdict
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from pathlib import Path
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import psutil
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from frigate.config import FrigateConfig
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from frigate.const import RECORD_DIR, CLIPS_DIR, CACHE_DIR
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logger = logging.getLogger(__name__)
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SECONDS_IN_DAY = 60 * 60 * 24
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def remove_empty_directories(directory):
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# list all directories recursively and sort them by path,
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# longest first
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paths = sorted(
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[x[0] for x in os.walk(RECORD_DIR)],
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key=lambda p: len(str(p)),
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reverse=True,
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)
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for path in paths:
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# don't delete the parent
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if path == RECORD_DIR:
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continue
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if len(os.listdir(path)) == 0:
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os.rmdir(path)
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class RecordingMaintainer(threading.Thread):
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def __init__(self, config: FrigateConfig, stop_event):
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threading.Thread.__init__(self)
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self.name = "recording_maint"
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self.config = config
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self.stop_event = stop_event
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def move_files(self):
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recordings = [
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d
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for d in os.listdir(RECORD_DIR)
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if os.path.isfile(os.path.join(RECORD_DIR, d)) and d.endswith(".mp4")
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]
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files_in_use = []
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for process in psutil.process_iter():
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try:
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if process.name() != "ffmpeg":
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continue
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flist = process.open_files()
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if flist:
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for nt in flist:
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if nt.path.startswith(RECORD_DIR):
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files_in_use.append(nt.path.split("/")[-1])
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except:
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continue
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for f in recordings:
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if f in files_in_use:
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continue
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basename = os.path.splitext(f)[0]
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camera, date = basename.rsplit("-", maxsplit=1)
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start_time = datetime.datetime.strptime(date, "%Y%m%d%H%M%S")
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ffprobe_cmd = [
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"ffprobe",
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"-v",
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"error",
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"-show_entries",
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"format=duration",
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"-of",
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"default=noprint_wrappers=1:nokey=1",
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f"{os.path.join(RECORD_DIR, f)}",
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]
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p = sp.run(ffprobe_cmd, capture_output=True)
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if p.returncode == 0:
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duration = float(p.stdout.decode().strip())
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else:
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logger.info(f"bad file: {f}")
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os.remove(os.path.join(RECORD_DIR, f))
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continue
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directory = os.path.join(
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RECORD_DIR, start_time.strftime("%Y-%m/%d/%H"), camera
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)
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if not os.path.exists(directory):
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os.makedirs(directory)
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file_name = f"{start_time.strftime('%M.%S.mp4')}"
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os.rename(os.path.join(RECORD_DIR, f), os.path.join(directory, file_name))
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def expire_files(self):
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delete_before = {}
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for name, camera in self.config.cameras.items():
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delete_before[name] = (
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datetime.datetime.now().timestamp()
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- SECONDS_IN_DAY * camera.record.retain_days
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)
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for p in Path("/media/frigate/recordings").rglob("*.mp4"):
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if not p.parent.name in delete_before:
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continue
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if p.stat().st_mtime < delete_before[p.parent.name]:
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p.unlink(missing_ok=True)
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def run(self):
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for counter in itertools.cycle(range(60)):
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if self.stop_event.wait(10):
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logger.info(f"Exiting recording maintenance...")
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break
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# only expire events every 10 minutes, but check for new files every 10 seconds
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if counter == 0:
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self.expire_files()
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remove_empty_directories(RECORD_DIR)
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self.move_files()
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