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() for detector in self.detectors.values(): detector.stop() while len(self.detection_shms) > 0: shm = self.detection_shms.pop() shm.close() shm.unlink()