Move recording management to separate process (#6248)

* Move recordings management to own process and ensure db multiprocess access

* remove reference to old threads

* Cleanup directory remover

* Mypy fixes

* Fix mypy

* Add support back for setting record via MQTT and WS

* Formatting

* Fix rebase issue

frigate/record/record.py

@@ -0,0 +1,53 @@
+"""Run recording maintainer and cleanup."""
+
+import logging
+import multiprocessing as mp
+import signal
+import threading
+
+from setproctitle import setproctitle
+from types import FrameType
+from typing import Optional
+
+from playhouse.sqliteq import SqliteQueueDatabase
+
+from frigate.config import FrigateConfig
+from frigate.models import Event, Recordings, Timeline
+from frigate.record.cleanup import RecordingCleanup
+from frigate.record.maintainer import RecordingMaintainer
+from frigate.types import RecordMetricsTypes
+from frigate.util import listen
+
+logger = logging.getLogger(__name__)
+
+
+def manage_recordings(
+    config: FrigateConfig,
+    recordings_info_queue: mp.Queue,
+    process_info: dict[str, RecordMetricsTypes],
+) -> None:
+    stop_event = mp.Event()
+
+    def receiveSignal(signalNumber: int, frame: Optional[FrameType]) -> None:
+        stop_event.set()
+
+    signal.signal(signal.SIGTERM, receiveSignal)
+    signal.signal(signal.SIGINT, receiveSignal)
+
+    threading.current_thread().name = "process:recording_manager"
+    setproctitle("frigate.recording_manager")
+    listen()
+
+    db = SqliteQueueDatabase(config.database.path)
+    models = [Event, Recordings, Timeline]
+    db.bind(models)
+
+    maintainer = RecordingMaintainer(
+        config, recordings_info_queue, process_info, stop_event
+    )
+    maintainer.start()
+
+    cleanup = RecordingCleanup(config, stop_event)
+    cleanup.start()
+
+    logger.info("recording_manager: exiting subprocess")