anti
b261e8e5fa
Active/degraded/failed/deploying topologies cannot be deleted
without first transitioning to torn_down, but the UI had no way
to trigger that. Add POST /topologies/{id}/teardown mirroring the
deploy endpoint (background task, 202 Accepted), and a
click-to-arm TEARDOWN button on the topology list card that shows
whenever the row is in a teardown-eligible state.
80 lines
2.6 KiB
Python
80 lines
2.6 KiB
Python
"""POST /topologies/{id}/teardown — transition an active/degraded/failed
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topology to ``tearing_down`` and fire the background teardown.
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Mirrors :mod:`api_deploy_topology`: the real Docker work runs in a
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BackgroundTask, the caller returns ``202 Accepted``, and
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:func:`decnet.engine.deployer.teardown_topology` writes the terminal
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``torn_down`` status when it finishes.
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"""
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from __future__ import annotations
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import asyncio
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import logging
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from fastapi import APIRouter, BackgroundTasks, Depends, HTTPException, status
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from decnet.engine.deployer import teardown_topology
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from decnet.telemetry import traced as _traced
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from decnet.topology.status import TopologyStatus
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from decnet.web.db.models import TopologySummary
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from decnet.web.dependencies import repo, require_admin
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log = logging.getLogger(__name__)
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router = APIRouter()
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# Statuses that can legally transition to TEARING_DOWN (see
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# decnet.topology.status._LEGAL).
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_TEARDOWNABLE: frozenset[str] = frozenset(
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{
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TopologyStatus.ACTIVE,
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TopologyStatus.DEGRADED,
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TopologyStatus.FAILED,
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TopologyStatus.DEPLOYING,
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}
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)
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async def _run_teardown(topology_id: str) -> None:
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try:
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await teardown_topology(repo, topology_id)
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except asyncio.CancelledError: # pragma: no cover — shutdown
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raise
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except Exception as exc: # noqa: BLE001
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log.error("background teardown of %s failed: %s", topology_id, exc)
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@router.post(
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"/{topology_id}/teardown",
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tags=["MazeNET Topologies"],
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response_model=TopologySummary,
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status_code=status.HTTP_202_ACCEPTED,
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responses={
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400: {"description": "Malformed path parameters"},
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401: {"description": "Missing or invalid credentials"},
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403: {"description": "Insufficient permissions"},
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404: {"description": "Topology not found"},
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409: {"description": "Topology cannot be torn down from its current status"},
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},
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)
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@_traced("api.topology.teardown")
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async def api_teardown_topology(
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topology_id: str,
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background: BackgroundTasks,
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_admin: dict = Depends(require_admin),
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) -> TopologySummary:
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topo = await repo.get_topology(topology_id)
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if topo is None:
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raise HTTPException(status_code=404, detail="Topology not found")
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if topo["status"] not in _TEARDOWNABLE:
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raise HTTPException(
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status_code=409,
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detail=(
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f"Topology is {topo['status']!r}; cannot teardown "
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f"(allowed from: {sorted(_TEARDOWNABLE)})."
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),
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)
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background.add_task(_run_teardown, topology_id)
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return TopologySummary(**topo)
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