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tgit/app/runner/deployer.py
ElebobaandClaude Opus 5.5 c443190bf4
CI / ruff · mypy · pytest (pull_request) Successful in 4m3s
feat(runner): tgit-runner — сервисы в песочнице на хосте, деплой после push (#13)
- infra/runner/tgit-runner: deploy/restart/remove/list по SSH forced command;
  аргументы не исполняются и не глобятся; архив — только файлы и папки,
  без «..», ≤ 20 МБ, есть main.py; health_url — только localhost
- песочница: uid 10001, read-only, tmpfs noexec, cap-drop ALL,
  no-new-privileges, 128 МБ без swap, 0.25 CPU, 64 PID, --network none
  (сеть — только по egress-allow админа), лимит 10 сервисов, 2 образа
- новая версия стартует рядом (-next) и заменяет старую, только став
  healthy; иначе удаляется, старая работает, exit 3
- бот: после push git archive изменённых services/<name>/ → runner;
  автору — «🚀 работает» или «⛔ не развёрнут» с логом, команде — алерт ⛔;
  удалённая папка → remove; «♻️ Перезапустить» в «Статусе» для админа (S-5)
- examples/escape_attempts: все попытки выбраться — BLOCKED на живом Docker
- install.sh, authorized_keys.example; CD бота обновляет runner на хосте

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-18 15:36:29 +03:00

86 lines
3.3 KiB
Python

"""After a push: the services it touched are (re)deployed through tgit-runner, the pusher hears how it went.
A service = `services/<name>/`. Gone from the commit — removed on the host. A refused deploy keeps the old version
running (the runner switches only to a healthy one) and raises ⛔ for the whole team.
"""
import asyncio
import logging
from collections.abc import Awaitable, Callable, Iterable
from dataclasses import dataclass
from app.alerts.detectors import Condition
from app.alerts.service import AlertService
from app.db.models import AlertKind
from app.repo.git import GitError, UploadsRepo
from app.runner.client import SERVICE, RunnerClient, RunnerResult
log = logging.getLogger(__name__)
def changed_services(paths: Iterable[str]) -> list[str]:
found = set()
for path in paths:
parts = path.split("/")
if len(parts) >= 3 and parts[0] == "services" and SERVICE.match(parts[1]):
found.add(parts[1])
return sorted(found)
@dataclass(frozen=True)
class Outcome:
service: str
result: RunnerResult
removed: bool = False
Report = Callable[[Outcome], Awaitable[None]]
class Deployer:
def __init__(self, repo: UploadsRepo, runner: RunnerClient, alerts: AlertService | None = None) -> None:
self._repo = repo
self._runner = runner
self._alerts = alerts
self._lock = asyncio.Lock() # one deploy at a time: builds are heavy for the shared host
self._tasks: set[asyncio.Task[None]] = set()
def schedule(self, sha: str, paths: Iterable[str], report: Report) -> list[str]:
"""Start in the background; returns the services that will be deployed."""
services = changed_services(paths)
if services:
task = asyncio.create_task(self.deploy(sha, services, report))
self._tasks.add(task)
task.add_done_callback(self._tasks.discard)
return services
async def deploy(self, sha: str, services: list[str], report: Report) -> None:
async with self._lock:
for service in services:
try:
outcome = await self._one(sha, service)
except Exception: # one broken service must not stop the others
log.exception("deploy %s @ %s", service, sha[:7])
outcome = Outcome(service, RunnerResult(False, -1, "internal error", ""))
if not outcome.result.ok and self._alerts is not None:
await self._alerts.event(
Condition(
AlertKind.DEPLOY_REFUSED,
f"tgit-svc-{service}",
{"detail": outcome.result.summary, "sha": sha[:7], "log": outcome.result.tail},
)
)
try:
await report(outcome)
except Exception:
log.exception("deploy report for %s", service)
async def _one(self, sha: str, service: str) -> Outcome:
tree = f"{sha}:services/{service}"
try:
await self._repo.git("cat-file", "-e", tree)
except GitError:
return Outcome(service, await self._runner.run("remove", service), removed=True)
archive = await self._repo.git("archive", "--format=tar", tree)
return Outcome(service, await self._runner.deploy(service, sha, archive))