blakeblackshear.frigate/frigate/stats.py

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import json
import logging
import threading
import time
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import psutil
import shutil
from frigate.config import FrigateConfig
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from frigate.const import RECORD_DIR, CLIPS_DIR, CACHE_DIR
from frigate.version import VERSION
logger = logging.getLogger(__name__)
def stats_init(camera_metrics, detectors):
stats_tracking = {
'camera_metrics': camera_metrics,
'detectors': detectors,
'started': int(time.time())
}
return stats_tracking
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def get_fs_type(path):
bestMatch = ""
fsType = ""
for part in psutil.disk_partitions(all=True):
if path.startswith(part.mountpoint) and len(bestMatch) < len(part.mountpoint):
fsType = part.fstype
bestMatch = part.mountpoint
return fsType
def stats_snapshot(stats_tracking):
camera_metrics = stats_tracking['camera_metrics']
stats = {}
total_detection_fps = 0
for name, camera_stats in camera_metrics.items():
total_detection_fps += camera_stats['detection_fps'].value
stats[name] = {
'camera_fps': round(camera_stats['camera_fps'].value, 2),
'process_fps': round(camera_stats['process_fps'].value, 2),
'skipped_fps': round(camera_stats['skipped_fps'].value, 2),
'detection_fps': round(camera_stats['detection_fps'].value, 2),
'pid': camera_stats['process'].pid,
'capture_pid': camera_stats['capture_process'].pid
}
stats['detectors'] = {}
for name, detector in stats_tracking["detectors"].items():
stats['detectors'][name] = {
'inference_speed': round(detector.avg_inference_speed.value * 1000, 2),
'detection_start': detector.detection_start.value,
'pid': detector.detect_process.pid
}
stats['detection_fps'] = round(total_detection_fps, 2)
stats['service'] = {
'uptime': (int(time.time()) - stats_tracking['started']),
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'version': VERSION,
'storage': {}
}
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for path in [RECORD_DIR, CLIPS_DIR, CACHE_DIR, "/dev/shm"]:
storage_stats = shutil.disk_usage(path)
stats['service']['storage'][path] = {
'total': round(storage_stats.total/1000000, 1),
'used': round(storage_stats.used/1000000, 1),
'free': round(storage_stats.free/1000000, 1),
'mount_type': get_fs_type(path)
}
return stats
class StatsEmitter(threading.Thread):
def __init__(self, config: FrigateConfig, stats_tracking, mqtt_client, topic_prefix, stop_event):
threading.Thread.__init__(self)
self.name = 'frigate_stats_emitter'
self.config = config
self.stats_tracking = stats_tracking
self.mqtt_client = mqtt_client
self.topic_prefix = topic_prefix
self.stop_event = stop_event
def run(self):
time.sleep(10)
while True:
if self.stop_event.is_set():
logger.info(f"Exiting watchdog...")
break
stats = stats_snapshot(self.stats_tracking)
self.mqtt_client.publish(f"{self.topic_prefix}/stats", json.dumps(stats), retain=False)
time.sleep(self.config.mqtt.stats_interval)