Files
FabledSteward/plugins/host_agent/scheduler.py
T
bvandeusen a7a281cb11 feat(plugins): fold first-party plugins in-tree; bundled + external roots
First-party plugins (host_agent, http, snmp, traefik, unifi, docker) are now
tracked under plugins/ and baked into the image, so they version atomically
with core — ending the cross-repo import drift the roundtable->steward rename
exposed. History for these files is preserved in the archived Roundtable-plugins
repo.

Plugin discovery becomes multi-root: PLUGIN_DIR (single) -> PLUGIN_DIRS
(bundled first, then external) + PLUGIN_INSTALL_DIR. Bundled ships in the image;
third-party plugins still mount at runtime into the external root
(STEWARD_PLUGIN_DIR, default /data/plugins) and downloads/installs land there.
Bundled shadows external on a name collision.

- config.py: load_bootstrap returns plugin_dirs + plugin_install_dir
- app.py: iterate PLUGIN_DIRS at the migration + load sites
- migration_runner.py: discover_all_in() unions every plugin root
- plugin_manager.py: resolve_plugin_path() (pure, first-root-wins); load /
  install / hot-reload span all roots; installs target the external root
- settings/routes.py: _discover_plugins scans all roots, dedup bundled-first
- Dockerfile: COPY plugins/ ; docker-compose: drop host bind, document external
- tests/test_plugin_dirs.py: resolution, multi-root discovery, bootstrap split

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-01 08:37:24 -04:00

79 lines
2.3 KiB
Python

# plugins/host_agent/scheduler.py
from __future__ import annotations
import logging
from datetime import datetime, timedelta, timezone
from typing import Iterable
from sqlalchemy import select
from steward.core.scheduler import ScheduledTask
from steward.models.hosts import Host
from .models import HostAgentRegistration
logger = logging.getLogger(__name__)
def _filter_stale(
regs: Iterable,
*,
now: datetime,
stale_after_seconds: int,
) -> list:
"""Pure staleness filter: returns the subset with last_seen_at strictly
older than (now - stale_after_seconds). Rows with last_seen_at=None are
never stale (they are unregistered-in-practice)."""
cutoff = now - timedelta(seconds=stale_after_seconds)
return [
r for r in regs
if r.last_seen_at is not None and r.last_seen_at < cutoff
]
async def find_stale_registrations(app, stale_after_seconds: int = 180) -> list[dict]:
async with app.db_sessionmaker() as session:
all_regs = (await session.execute(
select(HostAgentRegistration)
)).scalars().all()
stale_rows = _filter_stale(
all_regs,
now=datetime.now(timezone.utc),
stale_after_seconds=stale_after_seconds,
)
if not stale_rows:
return []
hosts = {
h.id: h for h in (await session.execute(
select(Host).where(Host.id.in_([r.host_id for r in stale_rows]))
)).scalars().all()
}
return [
{
"host_id": r.host_id,
"host_name": hosts[r.host_id].name if r.host_id in hosts else "?",
"last_seen_at": r.last_seen_at,
}
for r in stale_rows
]
def make_task(app) -> ScheduledTask:
async def _check_stale():
try:
stale = await find_stale_registrations(app)
except Exception:
logger.exception("host_agent stale check failed")
return
if stale:
logger.info(
"host_agent: %d stale agent(s): %s",
len(stale),
[s["host_name"] for s in stale],
)
return ScheduledTask(
name="host_agent_stale_check",
coro_factory=_check_stale,
interval_seconds=60,
run_on_startup=False,
)