Yves Gugger
bb7ce97330
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66 lines
1.8 KiB
Python
66 lines
1.8 KiB
Python
"""
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Ops/health metrics exported as Prometheus metrics (4B Ops).
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These are low-frequency filesystem-based metrics (safe on scrape).
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"""
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from __future__ import annotations
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from datetime import datetime
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from pathlib import Path
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from app.config import get_settings
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settings = get_settings()
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try:
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from prometheus_client import Gauge
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except Exception: # pragma: no cover
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Gauge = None # type: ignore
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if Gauge is not None:
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db_backups_enabled = Gauge("pounce_db_backups_enabled", "DB backups enabled (1/0)")
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db_backup_latest_unixtime = Gauge("pounce_db_backup_latest_unixtime", "Unix time of latest backup file (0 if none)")
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db_backup_latest_age_seconds = Gauge("pounce_db_backup_latest_age_seconds", "Age of latest backup file (seconds)")
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else: # pragma: no cover
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db_backups_enabled = None # type: ignore
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db_backup_latest_unixtime = None # type: ignore
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db_backup_latest_age_seconds = None # type: ignore
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def _backup_root() -> Path:
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root = Path(settings.backup_dir)
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if not root.is_absolute():
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root = (Path.cwd() / root).resolve()
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return root
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async def update_prometheus_ops_metrics() -> None:
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if Gauge is None:
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return
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db_backups_enabled.set(1 if settings.enable_db_backups else 0)
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root = _backup_root()
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if not root.exists() or not root.is_dir():
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db_backup_latest_unixtime.set(0)
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db_backup_latest_age_seconds.set(0)
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return
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files = [p for p in root.glob("*") if p.is_file()]
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if not files:
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db_backup_latest_unixtime.set(0)
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db_backup_latest_age_seconds.set(0)
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return
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latest = max(files, key=lambda p: p.stat().st_mtime)
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mtime = float(latest.stat().st_mtime)
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now = datetime.utcnow().timestamp()
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age = max(0.0, now - mtime)
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db_backup_latest_unixtime.set(mtime)
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db_backup_latest_age_seconds.set(age)
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