Files
DECNET/decnet/web/db/sqlmodel_repo/topology/lans.py
anti 614780f144 fix(types): P2 — wire _MixinBase + col() across sqlmodel_repo; suppress pydantic/SQLModel column typing false positives
- Add _MixinBase abstract class to _helpers.py: declares _session(),
  _deserialize_attacker(), _assert_pending(), _check_and_bump_version(),
  and list_running_topology_deckies() so mypy can see cross-mixin contracts
- Add _require(val, msg) helper for narrowing T | None → T
- Inherit _MixinBase in all 26 leaf mixin classes
- Wrap SQLAlchemy column method calls (.is_(), .like(), .notin_(), .in_(),
  .contains()) with col() from sqlmodel — fixes attr-defined false positives
  caused by pydantic plugin typing class-level fields as Python value types
- Wrap select(Model.field) with select(col(Model.field)) for column projections
- Add pyproject.toml [[tool.mypy.overrides]] to disable arg-type in
  sqlmodel_repo.*: pydantic plugin resolves .where(Model.field == v) as
  where(bool), a false positive; call-arg still catches real argument errors
- Remove 9 stale # type: ignore comments (logging, helpers, credentials)
- Fix telemetry.py traced() overload no-redef + misc
- Fix logs.py datetime/str operator and nullable PK comparison with col()
- sqlmodel_repo/ now has 0 mypy errors
2026-05-01 00:49:18 -04:00

129 lines
4.7 KiB
Python

"""LAN CRUD within a topology."""
from __future__ import annotations
from typing import Any, Optional
from sqlalchemy import asc, select, text, update
from decnet.web.db.models import LAN, TopologyEdge
from decnet.web.db.models.topology import LANRow
from decnet.web.db.sqlmodel_repo._helpers import _MixinBase
class LansMixin(_MixinBase):
"""``self._assert_pending`` / ``self._check_and_bump_version`` resolve
through ``TopologyCoreMixin`` via MRO."""
async def add_lan(
self,
data: dict[str, Any],
*,
expected_version: Optional[int] = None,
) -> str:
async with self._session() as session:
await self._check_and_bump_version(
session, data["topology_id"], expected_version
)
row = LAN(**data)
session.add(row)
await session.commit()
await session.refresh(row)
return row.id
async def update_lan(
self,
lan_id: str,
fields: dict[str, Any],
*,
expected_version: Optional[int] = None,
enforce_pending: bool = False,
) -> None:
if not fields:
return
async with self._session() as session:
result = await session.execute(
select(LAN).where(LAN.id == lan_id)
)
lan = result.scalar_one_or_none()
if lan is None:
raise ValueError(f"lan {lan_id!r} not found")
if enforce_pending:
await self._assert_pending(session, lan.topology_id)
if expected_version is not None:
await self._check_and_bump_version(
session, lan.topology_id, expected_version
)
await session.execute(
update(LAN).where(LAN.id == lan_id).values(**fields)
)
await session.commit()
async def delete_lan(
self,
lan_id: str,
*,
expected_version: Optional[int] = None,
enforce_pending: bool = True,
) -> None:
"""Cascade-delete a LAN.
Rejects if any decky declares this LAN as its home (i.e. has a
non-bridge edge to it — the only LAN that decky lives in). The
caller must delete or reassign the home-deckies first.
``enforce_pending=True`` by default keeps the HTTP CRUD guard
intact; the mutator's ``apply_remove_lan`` opts out (it has
already gated on topology status and the live-LAN docker
materialisation runs after).
"""
from decnet.topology.status import TopologyNotEditable # noqa: F401
async with self._session() as session:
result = await session.execute(select(LAN).where(LAN.id == lan_id))
lan = result.scalar_one_or_none()
if lan is None:
return
if enforce_pending:
await self._assert_pending(session, lan.topology_id)
# Home-decky check: any decky whose only edge lands here?
edges_result = await session.execute(
select(TopologyEdge).where(TopologyEdge.lan_id == lan_id)
)
edges_here = edges_result.scalars().all()
decky_uuids_on_this_lan = {e.decky_uuid for e in edges_here}
for decky_uuid in decky_uuids_on_this_lan:
other = await session.execute(
select(TopologyEdge).where(
TopologyEdge.decky_uuid == decky_uuid,
TopologyEdge.lan_id != lan_id,
)
)
if other.scalars().first() is None:
raise ValueError(
f"cannot delete LAN {lan.name!r}: decky "
f"{decky_uuid} has no other LAN (would be orphaned)"
)
if expected_version is not None:
await self._check_and_bump_version(
session, lan.topology_id, expected_version
)
# Cascade edges → LAN.
await session.execute(
text("DELETE FROM topology_edges WHERE lan_id = :l"),
{"l": lan_id},
)
await session.execute(text("DELETE FROM lans WHERE id = :l"), {"l": lan_id})
await session.commit()
async def list_lans_for_topology(
self, topology_id: str
) -> list[LANRow]:
async with self._session() as session:
result = await session.execute(
select(LAN).where(LAN.topology_id == topology_id).order_by(asc(LAN.name))
)
return [LANRow.model_validate(r.model_dump(mode="json")) for r in result.scalars().all()]