Files
DECNET/decnet/web/router/config/api_manage_users.py
anti 3945e72e11 perf: run bcrypt on a thread so it doesn't block the event loop
verify_password / get_password_hash are CPU-bound and take ~250ms each
at rounds=12. Called directly from async endpoints, they stall every
other coroutine for that window — the single biggest single-worker
bottleneck on the login path.

Adds averify_password / ahash_password that wrap the sync versions in
asyncio.to_thread. Sync versions stay put because _ensure_admin_user and
tests still use them.

5 call sites updated: login, change-password, create-user, reset-password.
tests/test_auth_async.py asserts parallel averify runs concurrently (~1x
of a single verify, not 2x).
2026-04-17 14:52:22 -04:00

132 lines
4.0 KiB
Python

import uuid as _uuid
from fastapi import APIRouter, Depends, HTTPException
from decnet.telemetry import traced as _traced
from decnet.web.auth import ahash_password
from decnet.web.dependencies import require_admin, repo
from decnet.web.db.models import (
CreateUserRequest,
UpdateUserRoleRequest,
ResetUserPasswordRequest,
UserResponse,
)
router = APIRouter()
@router.post(
"/config/users",
tags=["Configuration"],
responses={
400: {"description": "Bad Request (e.g. malformed JSON)"},
401: {"description": "Could not validate credentials"},
403: {"description": "Admin access required"},
409: {"description": "Username already exists"},
422: {"description": "Validation error"},
},
)
@_traced("api.create_user")
async def api_create_user(
req: CreateUserRequest,
admin: dict = Depends(require_admin),
) -> UserResponse:
existing = await repo.get_user_by_username(req.username)
if existing:
raise HTTPException(status_code=409, detail="Username already exists")
user_uuid = str(_uuid.uuid4())
await repo.create_user({
"uuid": user_uuid,
"username": req.username,
"password_hash": await ahash_password(req.password),
"role": req.role,
"must_change_password": True, # nosec B105 — not a password
})
return UserResponse(
uuid=user_uuid,
username=req.username,
role=req.role,
must_change_password=True,
)
@router.delete(
"/config/users/{user_uuid}",
tags=["Configuration"],
responses={
401: {"description": "Could not validate credentials"},
403: {"description": "Admin access required / cannot delete self"},
404: {"description": "User not found"},
},
)
@_traced("api.delete_user")
async def api_delete_user(
user_uuid: str,
admin: dict = Depends(require_admin),
) -> dict[str, str]:
if user_uuid == admin["uuid"]:
raise HTTPException(status_code=403, detail="Cannot delete your own account")
deleted = await repo.delete_user(user_uuid)
if not deleted:
raise HTTPException(status_code=404, detail="User not found")
return {"message": "User deleted"}
@router.put(
"/config/users/{user_uuid}/role",
tags=["Configuration"],
responses={
400: {"description": "Bad Request (e.g. malformed JSON)"},
401: {"description": "Could not validate credentials"},
403: {"description": "Admin access required / cannot change own role"},
404: {"description": "User not found"},
422: {"description": "Validation error"},
},
)
@_traced("api.update_user_role")
async def api_update_user_role(
user_uuid: str,
req: UpdateUserRoleRequest,
admin: dict = Depends(require_admin),
) -> dict[str, str]:
if user_uuid == admin["uuid"]:
raise HTTPException(status_code=403, detail="Cannot change your own role")
target = await repo.get_user_by_uuid(user_uuid)
if not target:
raise HTTPException(status_code=404, detail="User not found")
await repo.update_user_role(user_uuid, req.role)
return {"message": "User role updated"}
@router.put(
"/config/users/{user_uuid}/reset-password",
tags=["Configuration"],
responses={
400: {"description": "Bad Request (e.g. malformed JSON)"},
401: {"description": "Could not validate credentials"},
403: {"description": "Admin access required"},
404: {"description": "User not found"},
422: {"description": "Validation error"},
},
)
@_traced("api.reset_user_password")
async def api_reset_user_password(
user_uuid: str,
req: ResetUserPasswordRequest,
admin: dict = Depends(require_admin),
) -> dict[str, str]:
target = await repo.get_user_by_uuid(user_uuid)
if not target:
raise HTTPException(status_code=404, detail="User not found")
await repo.update_user_password(
user_uuid,
await ahash_password(req.new_password),
must_change_password=True,
)
return {"message": "Password reset successfully"}