Files
plm-lottery/app/api/routes/withdrawals.py
T
davideandClaude Sonnet 5.5 7ba8e22bb4 Real SQLite transactions: BEGIN IMMEDIATE and synchronous=FULL (B-88, DAT-74, DAT-52, ARC-07, TX-28, BET-11, DAT-16)
pysqlite's legacy mode emitted BEGIN only at the first DML, so every read
before it ran outside any transaction and a lock wait surfaced as "database is
locked" at an arbitrary later statement; place_bet also mistook that error for
a write-snapshot conflict, which SQLite cannot produce.

- _register_sqlite_pragmas: synchronous=FULL, isolation_level=None and a
  `begin` event that emits BEGIN / BEGIN IMMEDIATE.
- begin_immediate(session): takes the write lock before the first read; called
  first thing in place_bet, request_withdrawal, the scheduler transitions,
  _trigger_payout, the confirmation poller, the reconciler, bump_fee's persist
  phase, deposit crediting / external-spend marking / reinstating, and the
  derivation-index allocation at registration.
- A lock not granted before a broadcast answers service_busy (503, all seven
  languages), nothing built or sent; after a broadcast nothing is undone, the
  rows stay `building` for the reconciler.
- Spec, storico, BUGS.md and CLAUDE.md updated; 37 new tests on a real file DB.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
2026-09-29 16:26:01 +02:00

62 lines
2.1 KiB
Python

from fastapi import APIRouter, Depends, Request, status
from pydantic import BaseModel
from sqlalchemy.ext.asyncio import AsyncSession
from app.api.errors import from_api_error, http_error
from app.auth.dependencies import get_current_user
from app.db.models import User
from app.db.session import get_session
from app.withdrawals.service import WithdrawalError, request_withdrawal
router = APIRouter(prefix="/withdrawals", tags=["withdrawals"])
class WithdrawalRequest(BaseModel):
external_address: str
amount_sats: int
class WithdrawalResponse(BaseModel):
txid: str
amount_requested_sats: int
amount_sent_sats: int
status: str
@router.post("", response_model=WithdrawalResponse, status_code=status.HTTP_201_CREATED)
async def create_withdrawal(
body: WithdrawalRequest,
request: Request,
user: User = Depends(get_current_user),
session: AsyncSession = Depends(get_session),
) -> WithdrawalResponse:
listener = request.app.state.electrum_listener
if listener.client is None:
raise http_error(
status.HTTP_503_SERVICE_UNAVAILABLE,
"network_unavailable",
"not connected to the network, try again shortly",
)
async with request.app.state.user_locks.acquire(user.id):
try:
withdrawal = await request_withdrawal(
session, listener.client, user, body.external_address, body.amount_sats
)
except WithdrawalError as exc:
code = (
status.HTTP_502_BAD_GATEWAY # the network refused it, not the caller (B-07)
if exc.code == "broadcast_failed"
else status.HTTP_503_SERVICE_UNAVAILABLE # B-88: write lock not granted, nothing sent
if exc.code == "service_busy"
else status.HTTP_400_BAD_REQUEST
)
raise from_api_error(code, exc) from exc
return WithdrawalResponse(
txid=withdrawal.txid,
amount_requested_sats=withdrawal.amount_requested_sats,
amount_sent_sats=withdrawal.amount_sent_sats,
status=withdrawal.status,
)