mirror of
https://github.com/blakeblackshear/frigate.git
synced 2024-12-23 19:11:14 +01:00
435d152423
* Fix bug introduced in new linter * Ignore this error * Fix more * Ignore boolean error too
399 lines
15 KiB
Python
399 lines
15 KiB
Python
"""Maintain recording segments in cache."""
|
|
|
|
import datetime
|
|
import logging
|
|
import multiprocessing as mp
|
|
import os
|
|
import queue
|
|
import random
|
|
import string
|
|
import subprocess as sp
|
|
import threading
|
|
from collections import defaultdict
|
|
from multiprocessing.synchronize import Event as MpEvent
|
|
from pathlib import Path
|
|
from typing import Any, Tuple
|
|
|
|
import psutil
|
|
|
|
from frigate.config import FrigateConfig, RetainModeEnum
|
|
from frigate.const import CACHE_DIR, MAX_SEGMENT_DURATION, RECORD_DIR
|
|
from frigate.models import Event, Recordings
|
|
from frigate.types import RecordMetricsTypes
|
|
from frigate.util import area
|
|
|
|
logger = logging.getLogger(__name__)
|
|
|
|
|
|
class RecordingMaintainer(threading.Thread):
|
|
def __init__(
|
|
self,
|
|
config: FrigateConfig,
|
|
recordings_info_queue: mp.Queue,
|
|
process_info: dict[str, RecordMetricsTypes],
|
|
stop_event: MpEvent,
|
|
):
|
|
threading.Thread.__init__(self)
|
|
self.name = "recording_maintainer"
|
|
self.config = config
|
|
self.recordings_info_queue = recordings_info_queue
|
|
self.process_info = process_info
|
|
self.stop_event = stop_event
|
|
self.recordings_info: dict[str, Any] = defaultdict(list)
|
|
self.end_time_cache: dict[str, Tuple[datetime.datetime, float]] = {}
|
|
|
|
def move_files(self) -> None:
|
|
cache_files = sorted(
|
|
[
|
|
d
|
|
for d in os.listdir(CACHE_DIR)
|
|
if os.path.isfile(os.path.join(CACHE_DIR, d))
|
|
and d.endswith(".mp4")
|
|
and not d.startswith("clip_")
|
|
]
|
|
)
|
|
|
|
files_in_use = []
|
|
for process in psutil.process_iter():
|
|
try:
|
|
if process.name() != "ffmpeg":
|
|
continue
|
|
flist = process.open_files()
|
|
if flist:
|
|
for nt in flist:
|
|
if nt.path.startswith(CACHE_DIR):
|
|
files_in_use.append(nt.path.split("/")[-1])
|
|
except psutil.Error:
|
|
continue
|
|
|
|
# group recordings by camera
|
|
grouped_recordings: defaultdict[str, list[dict[str, Any]]] = defaultdict(list)
|
|
for cache in cache_files:
|
|
# Skip files currently in use
|
|
if cache in files_in_use:
|
|
continue
|
|
|
|
cache_path = os.path.join(CACHE_DIR, cache)
|
|
basename = os.path.splitext(cache)[0]
|
|
camera, date = basename.rsplit("-", maxsplit=1)
|
|
start_time = datetime.datetime.strptime(date, "%Y%m%d%H%M%S")
|
|
|
|
grouped_recordings[camera].append(
|
|
{
|
|
"cache_path": cache_path,
|
|
"start_time": start_time,
|
|
}
|
|
)
|
|
|
|
# delete all cached files past the most recent 5
|
|
keep_count = 5
|
|
for camera in grouped_recordings.keys():
|
|
segment_count = len(grouped_recordings[camera])
|
|
if segment_count > keep_count:
|
|
logger.warning(
|
|
f"Unable to keep up with recording segments in cache for {camera}. Keeping the {keep_count} most recent segments out of {segment_count} and discarding the rest..."
|
|
)
|
|
to_remove = grouped_recordings[camera][:-keep_count]
|
|
for rec in to_remove:
|
|
cache_path = rec["cache_path"]
|
|
Path(cache_path).unlink(missing_ok=True)
|
|
self.end_time_cache.pop(cache_path, None)
|
|
grouped_recordings[camera] = grouped_recordings[camera][-keep_count:]
|
|
|
|
for camera, recordings in grouped_recordings.items():
|
|
# clear out all the recording info for old frames
|
|
while (
|
|
len(self.recordings_info[camera]) > 0
|
|
and self.recordings_info[camera][0][0]
|
|
< recordings[0]["start_time"].timestamp()
|
|
):
|
|
self.recordings_info[camera].pop(0)
|
|
|
|
# get all events with the end time after the start of the oldest cache file
|
|
# or with end_time None
|
|
events: Event = (
|
|
Event.select()
|
|
.where(
|
|
Event.camera == camera,
|
|
(Event.end_time == None)
|
|
| (Event.end_time >= recordings[0]["start_time"].timestamp()),
|
|
Event.has_clip,
|
|
)
|
|
.order_by(Event.start_time)
|
|
)
|
|
for r in recordings:
|
|
cache_path = r["cache_path"]
|
|
start_time = r["start_time"]
|
|
|
|
# Just delete files if recordings are turned off
|
|
if (
|
|
camera not in self.config.cameras
|
|
or not self.process_info[camera]["record_enabled"].value
|
|
):
|
|
Path(cache_path).unlink(missing_ok=True)
|
|
self.end_time_cache.pop(cache_path, None)
|
|
continue
|
|
|
|
if cache_path in self.end_time_cache:
|
|
end_time, duration = self.end_time_cache[cache_path]
|
|
else:
|
|
ffprobe_cmd = [
|
|
"ffprobe",
|
|
"-v",
|
|
"error",
|
|
"-show_entries",
|
|
"format=duration",
|
|
"-of",
|
|
"default=noprint_wrappers=1:nokey=1",
|
|
f"{cache_path}",
|
|
]
|
|
p = sp.run(ffprobe_cmd, capture_output=True)
|
|
if p.returncode == 0 and p.stdout.decode():
|
|
duration = float(p.stdout.decode().strip())
|
|
else:
|
|
duration = -1
|
|
|
|
# ensure duration is within expected length
|
|
if 0 < duration < MAX_SEGMENT_DURATION:
|
|
end_time = start_time + datetime.timedelta(seconds=duration)
|
|
self.end_time_cache[cache_path] = (end_time, duration)
|
|
else:
|
|
if duration == -1:
|
|
logger.warning(
|
|
f"Failed to probe corrupt segment {cache_path} : {p.returncode} - {str(p.stderr)}"
|
|
)
|
|
|
|
logger.warning(
|
|
f"Discarding a corrupt recording segment: {cache_path}"
|
|
)
|
|
Path(cache_path).unlink(missing_ok=True)
|
|
continue
|
|
|
|
# if cached file's start_time is earlier than the retain days for the camera
|
|
if start_time <= (
|
|
(
|
|
datetime.datetime.now()
|
|
- datetime.timedelta(
|
|
days=self.config.cameras[camera].record.retain.days
|
|
)
|
|
)
|
|
):
|
|
# if the cached segment overlaps with the events:
|
|
overlaps = False
|
|
for event in events:
|
|
# if the event starts in the future, stop checking events
|
|
# and remove this segment
|
|
if event.start_time > end_time.timestamp():
|
|
overlaps = False
|
|
Path(cache_path).unlink(missing_ok=True)
|
|
self.end_time_cache.pop(cache_path, None)
|
|
break
|
|
|
|
# if the event is in progress or ends after the recording starts, keep it
|
|
# and stop looking at events
|
|
if (
|
|
event.end_time is None
|
|
or event.end_time >= start_time.timestamp()
|
|
):
|
|
overlaps = True
|
|
break
|
|
|
|
if overlaps:
|
|
record_mode = self.config.cameras[
|
|
camera
|
|
].record.events.retain.mode
|
|
# move from cache to recordings immediately
|
|
self.store_segment(
|
|
camera,
|
|
start_time,
|
|
end_time,
|
|
duration,
|
|
cache_path,
|
|
record_mode,
|
|
)
|
|
# if it doesn't overlap with an event, go ahead and drop the segment
|
|
# if it ends more than the configured pre_capture for the camera
|
|
else:
|
|
pre_capture = self.config.cameras[
|
|
camera
|
|
].record.events.pre_capture
|
|
most_recently_processed_frame_time = self.recordings_info[
|
|
camera
|
|
][-1][0]
|
|
retain_cutoff = most_recently_processed_frame_time - pre_capture
|
|
if end_time.timestamp() < retain_cutoff:
|
|
Path(cache_path).unlink(missing_ok=True)
|
|
self.end_time_cache.pop(cache_path, None)
|
|
# else retain days includes this segment
|
|
else:
|
|
record_mode = self.config.cameras[camera].record.retain.mode
|
|
self.store_segment(
|
|
camera, start_time, end_time, duration, cache_path, record_mode
|
|
)
|
|
|
|
def segment_stats(
|
|
self, camera: str, start_time: datetime.datetime, end_time: datetime.datetime
|
|
) -> Tuple[int, int]:
|
|
active_count = 0
|
|
motion_count = 0
|
|
for frame in self.recordings_info[camera]:
|
|
# frame is after end time of segment
|
|
if frame[0] > end_time.timestamp():
|
|
break
|
|
# frame is before start time of segment
|
|
if frame[0] < start_time.timestamp():
|
|
continue
|
|
|
|
active_count += len(
|
|
[
|
|
o
|
|
for o in frame[1]
|
|
if not o["false_positive"] and o["motionless_count"] == 0
|
|
]
|
|
)
|
|
|
|
motion_count += sum([area(box) for box in frame[2]])
|
|
|
|
return (motion_count, active_count)
|
|
|
|
def store_segment(
|
|
self,
|
|
camera: str,
|
|
start_time: datetime.datetime,
|
|
end_time: datetime.datetime,
|
|
duration: float,
|
|
cache_path: str,
|
|
store_mode: RetainModeEnum,
|
|
) -> None:
|
|
motion_count, active_count = self.segment_stats(camera, start_time, end_time)
|
|
|
|
# check if the segment shouldn't be stored
|
|
if (store_mode == RetainModeEnum.motion and motion_count == 0) or (
|
|
store_mode == RetainModeEnum.active_objects and active_count == 0
|
|
):
|
|
Path(cache_path).unlink(missing_ok=True)
|
|
self.end_time_cache.pop(cache_path, None)
|
|
return
|
|
|
|
directory = os.path.join(
|
|
RECORD_DIR,
|
|
start_time.astimezone(tz=datetime.timezone.utc).strftime("%Y-%m-%d/%H"),
|
|
camera,
|
|
)
|
|
|
|
if not os.path.exists(directory):
|
|
os.makedirs(directory)
|
|
|
|
file_name = (
|
|
f"{start_time.replace(tzinfo=datetime.timezone.utc).strftime('%M.%S.mp4')}"
|
|
)
|
|
file_path = os.path.join(directory, file_name)
|
|
|
|
try:
|
|
if not os.path.exists(file_path):
|
|
start_frame = datetime.datetime.now().timestamp()
|
|
|
|
# add faststart to kept segments to improve metadata reading
|
|
ffmpeg_cmd = [
|
|
"ffmpeg",
|
|
"-hide_banner",
|
|
"-y",
|
|
"-i",
|
|
cache_path,
|
|
"-c",
|
|
"copy",
|
|
"-movflags",
|
|
"+faststart",
|
|
file_path,
|
|
]
|
|
|
|
p = sp.run(
|
|
ffmpeg_cmd,
|
|
encoding="ascii",
|
|
capture_output=True,
|
|
)
|
|
|
|
if p.returncode != 0:
|
|
logger.error(f"Unable to convert {cache_path} to {file_path}")
|
|
logger.error(p.stderr)
|
|
return
|
|
else:
|
|
logger.debug(
|
|
f"Copied {file_path} in {datetime.datetime.now().timestamp()-start_frame} seconds."
|
|
)
|
|
|
|
try:
|
|
# get the segment size of the cache file
|
|
# file without faststart is same size
|
|
segment_size = round(
|
|
float(os.path.getsize(cache_path)) / 1000000, 1
|
|
)
|
|
except OSError:
|
|
segment_size = 0
|
|
|
|
os.remove(cache_path)
|
|
|
|
rand_id = "".join(
|
|
random.choices(string.ascii_lowercase + string.digits, k=6)
|
|
)
|
|
Recordings.create(
|
|
id=f"{start_time.timestamp()}-{rand_id}",
|
|
camera=camera,
|
|
path=file_path,
|
|
start_time=start_time.timestamp(),
|
|
end_time=end_time.timestamp(),
|
|
duration=duration,
|
|
motion=motion_count,
|
|
# TODO: update this to store list of active objects at some point
|
|
objects=active_count,
|
|
segment_size=segment_size,
|
|
)
|
|
except Exception as e:
|
|
logger.error(f"Unable to store recording segment {cache_path}")
|
|
Path(cache_path).unlink(missing_ok=True)
|
|
logger.error(e)
|
|
|
|
# clear end_time cache
|
|
self.end_time_cache.pop(cache_path, None)
|
|
|
|
def run(self) -> None:
|
|
# Check for new files every 5 seconds
|
|
wait_time = 5.0
|
|
while not self.stop_event.wait(wait_time):
|
|
run_start = datetime.datetime.now().timestamp()
|
|
|
|
# empty the recordings info queue
|
|
while True:
|
|
try:
|
|
(
|
|
camera,
|
|
frame_time,
|
|
current_tracked_objects,
|
|
motion_boxes,
|
|
regions,
|
|
) = self.recordings_info_queue.get(False)
|
|
|
|
if self.process_info[camera]["record_enabled"].value:
|
|
self.recordings_info[camera].append(
|
|
(
|
|
frame_time,
|
|
current_tracked_objects,
|
|
motion_boxes,
|
|
regions,
|
|
)
|
|
)
|
|
except queue.Empty:
|
|
break
|
|
|
|
try:
|
|
self.move_files()
|
|
except Exception as e:
|
|
logger.error(
|
|
"Error occurred when attempting to maintain recording cache"
|
|
)
|
|
logger.error(e)
|
|
duration = datetime.datetime.now().timestamp() - run_start
|
|
wait_time = max(0, 5 - duration)
|
|
|
|
logger.info("Exiting recording maintenance...")
|