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tgit/app/runtime/snapshots.py
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ElebobaandClaude Opus 5.5 6c6f766abc
CI / ruff · mypy · pytest (pull_request) Successful in 4m49s
feat(alerts): алерты всей команде — детекторы, дедупликация, список (#15)
- детекторы по состоянию после каждого раунда снапшотов: краш, OOM,
  цикл рестартов, unhealthy, перегрузка ≥ 1 мин, мало места, Docker
  недоступен; пороги в config/alerts.yaml
- AlertService: ключ kind+service, повтор в 10 мин — счётчик в исходном
  сообщении, «✅ восстановлено» ответом; разовые события (🛡) со счётчиком
- рассылка всем активным (🛡 — только админам), темп ~25/с, RetryAfter,
  заблокировавший бота пропускается; alert_deliveries для правок и ответов
- «🚨 Алерты»: активные + 7 дней по 10, карточка; кнопки «📜 Логи»,
  «🩺 Статус» под алертом открывают новое сообщение, а не затирают алерт
- 🛡 атаки через агента идут через общий сервис алертов
- убраны заглушки «Раздел в разработке» — у всех разделов свои роутеры

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-17 15:36:09 +03:00

131 lines
4.7 KiB
Python

"""Every 15 s: restart count, CPU and RAM of each running managed container → `container_snapshots`.
The history answers «are restarts growing over the last 5 minutes» (S-3) and feeds alerts (#15).
Old rows are removed by `app.db.maintenance`.
"""
import asyncio
import logging
from collections.abc import Awaitable, Callable
from dataclasses import dataclass
from datetime import datetime
from sqlalchemy import select
from app.db.models import ContainerSnapshot, utcnow
from app.db.session import SessionMaker
from app.runtime.docker import Details, DockerClient, DockerError, Stats
log = logging.getLogger(__name__)
class SnapshotStore:
def __init__(self, sessions: SessionMaker) -> None:
self._sessions = sessions
async def add(self, rows: list[ContainerSnapshot]) -> None:
if rows:
async with self._sessions.begin() as session:
session.add_all(rows)
async def oldest_since(self, container: str, since: datetime) -> ContainerSnapshot | None:
async with self._sessions() as session:
return await session.scalar(
select(ContainerSnapshot)
.where(ContainerSnapshot.container == container, ContainerSnapshot.at >= since)
.order_by(ContainerSnapshot.at)
.limit(1)
)
async def since(self, container: str, since: datetime) -> list[ContainerSnapshot]:
async with self._sessions() as session:
rows = await session.scalars(
select(ContainerSnapshot)
.where(ContainerSnapshot.container == container, ContainerSnapshot.at >= since)
.order_by(ContainerSnapshot.at)
)
return list(rows)
async def latest(self, container: str) -> ContainerSnapshot | None:
async with self._sessions() as session:
return await session.scalar(
select(ContainerSnapshot)
.where(ContainerSnapshot.container == container)
.order_by(ContainerSnapshot.at.desc())
.limit(1)
)
@dataclass(frozen=True)
class Observation:
"""One container in one round: what the alert detectors look at (#15)."""
details: Details
stats: Stats | None # None when not running or stats failed
async def _observe(docker: DockerClient, container_id: str) -> Observation | None:
try:
details = await docker.inspect(container_id)
except DockerError as e:
log.warning("snapshot %s: %s", container_id[:12], e)
return None
stats = None
if details.state == "running":
try:
stats = await docker.stats(container_id)
except DockerError as e:
log.warning("stats %s: %s", container_id[:12], e)
return Observation(details, stats)
def _row(o: Observation, at: datetime) -> ContainerSnapshot | None:
if o.stats is None:
return None
return ContainerSnapshot(
container=o.details.name,
at=at,
restart_count=o.details.restart_count,
cpu_pct=o.stats.cpu_pct,
mem_pct=round(o.stats.mem_pct, 1),
health=o.details.health,
)
async def collect_once(docker: DockerClient, store: SnapshotStore, now: datetime | None = None) -> list[Observation]:
"""Inspect every managed container, stats for the running ones; a snapshot row per running container."""
at = now or utcnow()
found = await asyncio.gather(*(_observe(docker, c.id) for c in await docker.containers()))
observations = [o for o in found if o is not None]
await store.add([row for o in observations if (row := _row(o, at)) is not None])
return observations
# Called after every round: the observations, or None when Docker itself was unreachable
RoundHook = Callable[[list[Observation] | None], Awaitable[None]]
async def snapshot_loop(
docker: DockerClient, store: SnapshotStore, interval: float, on_round: RoundHook | None = None
) -> None:
failing = False
while True:
observations: list[Observation] | None = None
try:
observations = await collect_once(docker, store)
if failing:
log.info("snapshots: docker reachable again")
failing = False
except DockerError as e:
if not failing: # one line per outage, not one every 15 s
log.warning("snapshots: %s", e)
failing = True
except Exception: # a broken round must not kill the bot
log.exception("snapshots failed")
if on_round is not None:
try:
await on_round(observations)
except Exception:
log.exception("snapshot hook failed")
await asyncio.sleep(interval)