import json
import logging
import multiprocessing as mp
import os
from logging.handlers import QueueHandler
from typing import Dict, List
import sys
import signal
import yaml
from peewee_migrate import Router
from playhouse.sqlite_ext import SqliteExtDatabase
from playhouse.sqliteq import SqliteQueueDatabase
from frigate.config import FrigateConfig
from frigate.const import RECORD_DIR, CLIPS_DIR, CACHE_DIR
from frigate.edgetpu import EdgeTPUProcess
from frigate.events import EventProcessor, EventCleanup
from frigate.http import create_app
from frigate.log import log_process, root_configurer
from frigate.models import Event
from frigate.mqtt import create_mqtt_client
from frigate.object_processing import TrackedObjectProcessor
from frigate.record import RecordingMaintainer
from frigate.stats import StatsEmitter, stats_init
from frigate.video import capture_camera, track_camera
from frigate.watchdog import FrigateWatchdog
from frigate.zeroconf import broadcast_zeroconf
logger = logging.getLogger(__name__)
class FrigateApp():
def __init__(self):
self.stop_event = mp.Event()
self.config: FrigateConfig = None
self.detection_queue = mp.Queue()
self.detectors: Dict[str, EdgeTPUProcess] = {}
self.detection_out_events: Dict[str, mp.Event] = {}
self.detection_shms: List[mp.shared_memory.SharedMemory] = []
self.log_queue = mp.Queue()
self.camera_metrics = {}
def set_environment_vars(self):
for key, value in self.config.environment_vars.items():
os.environ[key] = value
def ensure_dirs(self):
for d in [RECORD_DIR, CLIPS_DIR, CACHE_DIR]:
if not os.path.exists(d) and not os.path.islink(d):
logger.info(f"Creating directory: {d}")
os.makedirs(d)
else:
logger.debug(f"Skipping directory: {d}")
tmpfs_size = self.config.clips.tmpfs_cache_size
if tmpfs_size:
logger.info(f"Creating tmpfs of size {tmpfs_size}")
rc = os.system(f"mount -t tmpfs -o size={tmpfs_size} tmpfs {CACHE_DIR}")
if rc != 0:
logger.error(f"Failed to create tmpfs, error code: {rc}")
def init_logger(self):
self.log_process = mp.Process(target=log_process, args=(self.log_queue,), name='log_process')
self.log_process.daemon = True
self.log_process.start()
root_configurer(self.log_queue)
def init_config(self):
config_file = os.environ.get('CONFIG_FILE', '/config/config.yml')
self.config = FrigateConfig(config_file=config_file)
for camera_name in self.config.cameras.keys():
# create camera_metrics
self.camera_metrics[camera_name] = {
'camera_fps': mp.Value('d', 0.0),
'skipped_fps': mp.Value('d', 0.0),
'process_fps': mp.Value('d', 0.0),
'detection_enabled': mp.Value('i', self.config.cameras[camera_name].detect.enabled),
'detection_fps': mp.Value('d', 0.0),
'detection_frame': mp.Value('d', 0.0),
'read_start': mp.Value('d', 0.0),
'ffmpeg_pid': mp.Value('i', 0),
'frame_queue': mp.Queue(maxsize=2),
}
def check_config(self):
for name, camera in self.config.cameras.items():
assigned_roles = list(set([r for i in camera.ffmpeg.inputs for r in i.roles]))
if not camera.clips.enabled and 'clips' in assigned_roles:
logger.warning(f"Camera {name} has clips assigned to an input, but clips is not enabled.")
elif camera.clips.enabled and not 'clips' in assigned_roles:
logger.warning(f"Camera {name} has clips enabled, but clips is not assigned to an input.")
if not camera.record.enabled and 'record' in assigned_roles:
logger.warning(f"Camera {name} has record assigned to an input, but record is not enabled.")
elif camera.record.enabled and not 'record' in assigned_roles:
logger.warning(f"Camera {name} has record enabled, but record is not assigned to an input.")
if not camera.rtmp.enabled and 'rtmp' in assigned_roles:
logger.warning(f"Camera {name} has rtmp assigned to an input, but rtmp is not enabled.")
elif camera.rtmp.enabled and not 'rtmp' in assigned_roles:
logger.warning(f"Camera {name} has rtmp enabled, but rtmp is not assigned to an input.")
def set_log_levels(self):
logging.getLogger().setLevel(self.config.logger.default)
for log, level in self.config.logger.logs.items():
logging.getLogger(log).setLevel(level)
if not 'werkzeug' in self.config.logger.logs:
logging.getLogger('werkzeug').setLevel('ERROR')
def init_queues(self):
# Queues for clip processing
self.event_queue = mp.Queue()
self.event_processed_queue = mp.Queue()
# Queue for cameras to push tracked objects to
self.detected_frames_queue = mp.Queue(maxsize=len(self.config.cameras.keys())*2)
def init_database(self):
migrate_db = SqliteExtDatabase(self.config.database.path)
# Run migrations
del(logging.getLogger('peewee_migrate').handlers[:])
router = Router(migrate_db)
router.run()
migrate_db.close()
self.db = SqliteQueueDatabase(self.config.database.path)
models = [Event]
self.db.bind(models)
def init_stats(self):
self.stats_tracking = stats_init(self.camera_metrics, self.detectors)
def init_web_server(self):
self.flask_app = create_app(self.config, self.db, self.stats_tracking, self.detected_frames_processor)
def init_mqtt(self):
self.mqtt_client = create_mqtt_client(self.config, self.camera_metrics)
def start_detectors(self):
model_shape = (self.config.model.height, self.config.model.width)
for name in self.config.cameras.keys():
self.detection_out_events[name] = mp.Event()
shm_in = mp.shared_memory.SharedMemory(name=name, create=True, size=self.config.model.height*self.config.model.width*3)
shm_out = mp.shared_memory.SharedMemory(name=f"out-{name}", create=True, size=20*6*4)
self.detection_shms.append(shm_in)
self.detection_shms.append(shm_out)
for name, detector in self.config.detectors.items():
if detector.type == 'cpu':
self.detectors[name] = EdgeTPUProcess(name, self.detection_queue, self.detection_out_events, model_shape, 'cpu', detector.num_threads)
if detector.type == 'edgetpu':
self.detectors[name] = EdgeTPUProcess(name, self.detection_queue, self.detection_out_events, model_shape, detector.device, detector.num_threads)
def start_detected_frames_processor(self):
self.detected_frames_processor = TrackedObjectProcessor(self.config, self.mqtt_client, self.config.mqtt.topic_prefix,
self.detected_frames_queue, self.event_queue, self.event_processed_queue, self.stop_event)
self.detected_frames_processor.start()
def start_camera_processors(self):
model_shape = (self.config.model.height, self.config.model.width)
for name, config in self.config.cameras.items():
camera_process = mp.Process(target=track_camera, name=f"camera_processor:{name}", args=(name, config, model_shape,
self.detection_queue, self.detection_out_events[name], self.detected_frames_queue,
self.camera_metrics[name]))
camera_process.daemon = True
self.camera_metrics[name]['process'] = camera_process
camera_process.start()
logger.info(f"Camera processor started for {name}: {camera_process.pid}")
def start_camera_capture_processes(self):
for name, config in self.config.cameras.items():
capture_process = mp.Process(target=capture_camera, name=f"camera_capture:{name}", args=(name, config,
self.camera_metrics[name]))
capture_process.daemon = True
self.camera_metrics[name]['capture_process'] = capture_process
capture_process.start()
logger.info(f"Capture process started for {name}: {capture_process.pid}")
def start_event_processor(self):
self.event_processor = EventProcessor(self.config, self.camera_metrics, self.event_queue, self.event_processed_queue, self.stop_event)
self.event_processor.start()
def start_event_cleanup(self):
self.event_cleanup = EventCleanup(self.config, self.stop_event)
self.event_cleanup.start()
def start_recording_maintainer(self):
self.recording_maintainer = RecordingMaintainer(self.config, self.stop_event)
self.recording_maintainer.start()
def start_stats_emitter(self):
self.stats_emitter = StatsEmitter(self.config, self.stats_tracking, self.mqtt_client, self.config.mqtt.topic_prefix, self.stop_event)
self.stats_emitter.start()
def start_watchdog(self):
self.frigate_watchdog = FrigateWatchdog(self.detectors, self.stop_event)
self.frigate_watchdog.start()
def start(self):
self.init_logger()
try:
try:
self.init_config()
except Exception as e:
print(f"Error parsing config: {e}")
self.log_process.terminate()
sys.exit(1)
self.set_environment_vars()
self.ensure_dirs()
self.check_config()
self.set_log_levels()
self.init_queues()
self.init_database()
self.init_mqtt()
except Exception as e:
print(e)
self.log_process.terminate()
sys.exit(1)
self.start_detectors()
self.start_detected_frames_processor()
self.start_camera_processors()
self.start_camera_capture_processes()
self.init_stats()
self.init_web_server()
self.start_event_processor()
self.start_event_cleanup()
self.start_recording_maintainer()
self.start_stats_emitter()
self.start_watchdog()
# self.zeroconf = broadcast_zeroconf(self.config.mqtt.client_id)
def receiveSignal(signalNumber, frame):
self.stop()
sys.exit()
signal.signal(signal.SIGTERM, receiveSignal)
self.flask_app.run(host='127.0.0.1', port=5001, debug=False)
self.stop()
def stop(self):
logger.info(f"Stopping...")
self.stop_event.set()
self.detected_frames_processor.join()
self.event_processor.join()
self.event_cleanup.join()
self.recording_maintainer.join()
self.stats_emitter.join()
self.frigate_watchdog.join()
self.db.stop()
for detector in self.detectors.values():
detector.stop()
while len(self.detection_shms) > 0:
shm = self.detection_shms.pop()
shm.close()
shm.unlink()