feat(api/topology): pending-only child CRUD for LANs, deckies, edges

decnet/web/router/topology/api_decky_crud.py

@@ -0,0 +1,136 @@
+"""Decky CRUD endpoints — pending-only child mutations.
+
+    POST   /topologies/{id}/deckies
+    PATCH  /topologies/{id}/deckies/{uuid}
+    DELETE /topologies/{id}/deckies/{uuid}
+"""
+from __future__ import annotations
+
+from fastapi import APIRouter, Depends, HTTPException, Response, status
+
+from decnet.telemetry import traced as _traced
+from decnet.topology.status import (
+    TopologyNotEditable,
+    VersionConflict,
+)
+from decnet.web.db.models import DeckyCreateRequest, DeckyRow, DeckyUpdateRequest
+from decnet.web.dependencies import repo, require_admin
+
+from ._guards import assert_pending_or_409, map_repo_exception
+
+router = APIRouter()
+
+
+@router.post(
+    "/{topology_id}/deckies",
+    tags=["MazeNET Topologies"],
+    response_model=DeckyRow,
+    status_code=status.HTTP_201_CREATED,
+    responses={
+        400: {"description": "Malformed body or invalid decky fields"},
+        401: {"description": "Missing or invalid credentials"},
+        403: {"description": "Insufficient permissions"},
+        404: {"description": "Topology not found"},
+        409: {"description": "Topology not editable or version conflict"},
+    },
+)
+@_traced("api.topology.decky.create")
+async def api_create_decky(
+    topology_id: str,
+    body: DeckyCreateRequest,
+    _admin: dict = Depends(require_admin),
+) -> DeckyRow:
+    await assert_pending_or_409(topology_id)
+
+    payload = {
+        "topology_id": topology_id,
+        "name": body.name,
+        "services": body.services,
+        "decky_config": body.decky_config,
+        "x": body.x,
+        "y": body.y,
+    }
+    try:
+        decky_uuid = await repo.add_topology_decky(
+            payload, expected_version=body.expected_version
+        )
+    except (TopologyNotEditable, VersionConflict, ValueError) as exc:
+        raise map_repo_exception(exc) from exc
+
+    rows = await repo.list_topology_deckies(topology_id)
+    row = next((r for r in rows if r["uuid"] == decky_uuid), None)
+    if row is None:  # pragma: no cover
+        raise HTTPException(status_code=500, detail="Decky insert vanished")
+    return DeckyRow(**row)
+
+
+@router.patch(
+    "/{topology_id}/deckies/{decky_uuid}",
+    tags=["MazeNET Topologies"],
+    response_model=DeckyRow,
+    responses={
+        400: {"description": "Malformed body"},
+        401: {"description": "Missing or invalid credentials"},
+        403: {"description": "Insufficient permissions"},
+        404: {"description": "Topology or decky not found"},
+        409: {"description": "Topology not editable or version conflict"},
+    },
+)
+@_traced("api.topology.decky.update")
+async def api_update_decky(
+    topology_id: str,
+    decky_uuid: str,
+    body: DeckyUpdateRequest,
+    _admin: dict = Depends(require_admin),
+) -> DeckyRow:
+    await assert_pending_or_409(topology_id)
+
+    fields = body.model_dump(exclude_unset=True, exclude={"expected_version"})
+    try:
+        await repo.update_topology_decky(
+            decky_uuid,
+            fields,
+            expected_version=body.expected_version,
+            enforce_pending=True,
+        )
+    except (TopologyNotEditable, VersionConflict) as exc:
+        raise map_repo_exception(exc) from exc
+    except ValueError as exc:
+        raise HTTPException(status_code=404, detail=str(exc)) from exc
+
+    rows = await repo.list_topology_deckies(topology_id)
+    row = next((r for r in rows if r["uuid"] == decky_uuid), None)
+    if row is None:
+        raise HTTPException(status_code=404, detail="Decky not found")
+    return DeckyRow(**row)
+
+
+@router.delete(
+    "/{topology_id}/deckies/{decky_uuid}",
+    tags=["MazeNET Topologies"],
+    status_code=status.HTTP_204_NO_CONTENT,
+    responses={
+        400: {"description": "Malformed path"},
+        401: {"description": "Missing or invalid credentials"},
+        403: {"description": "Insufficient permissions"},
+        404: {"description": "Topology or decky not found"},
+        409: {"description": "Topology not editable or version conflict"},
+    },
+)
+@_traced("api.topology.decky.delete")
+async def api_delete_decky(
+    topology_id: str,
+    decky_uuid: str,
+    _admin: dict = Depends(require_admin),
+) -> Response:
+    await assert_pending_or_409(topology_id)
+
+    rows = await repo.list_topology_deckies(topology_id)
+    if not any(r["uuid"] == decky_uuid for r in rows):
+        raise HTTPException(status_code=404, detail="Decky not found")
+
+    try:
+        await repo.delete_topology_decky(decky_uuid)
+    except (TopologyNotEditable, VersionConflict, ValueError) as exc:
+        raise map_repo_exception(exc) from exc
+    return Response(status_code=status.HTTP_204_NO_CONTENT)