mirror of
https://github.com/lnbits/lnbits-legend.git
synced 2024-11-20 10:39:59 +01:00
122 lines
3.2 KiB
Python
122 lines
3.2 KiB
Python
import time
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import asyncio
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import traceback
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from http import HTTPStatus
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from typing import List, Callable
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from fastapi.exceptions import HTTPException
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from lnbits.settings import WALLET
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from lnbits.core.crud import (
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get_payments,
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get_standalone_payment,
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delete_expired_invoices,
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get_balance_checks,
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)
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from lnbits.core.services import redeem_lnurl_withdraw
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deferred_async: List[Callable] = []
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def record_async(func: Callable) -> Callable:
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def recorder(state):
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deferred_async.append(func)
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return recorder
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async def run_deferred_async():
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for func in deferred_async:
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asyncio.create_task(catch_everything_and_restart(func))
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async def catch_everything_and_restart(func):
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try:
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await func()
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except asyncio.CancelledError:
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raise # because we must pass this up
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except Exception as exc:
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print("caught exception in background task:", exc)
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print(traceback.format_exc())
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print("will restart the task in 5 seconds.")
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await asyncio.sleep(5)
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await catch_everything_and_restart(func)
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async def send_push_promise(a, b) -> None:
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pass
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invoice_listeners: List[asyncio.Queue] = []
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def register_invoice_listener(send_chan: asyncio.Queue):
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"""
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A method intended for extensions to call when they want to be notified about
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new invoice payments incoming.
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"""
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invoice_listeners.append(send_chan)
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async def webhook_handler():
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handler = getattr(WALLET, "webhook_listener", None)
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if handler:
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return await handler()
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raise HTTPException(status_code=HTTPStatus.NO_CONTENT)
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internal_invoice_queue = asyncio.Queue(0)
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async def internal_invoice_listener():
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while True:
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checking_id = await internal_invoice_queue.get()
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asyncio.create_task(invoice_callback_dispatcher(checking_id))
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async def invoice_listener():
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async for checking_id in WALLET.paid_invoices_stream():
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print("> got a payment notification", checking_id)
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asyncio.create_task(invoice_callback_dispatcher(checking_id))
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async def check_pending_payments():
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await delete_expired_invoices()
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outgoing = True
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incoming = True
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while True:
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for payment in await get_payments(
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since=(int(time.time()) - 60 * 60 * 24 * 15), # 15 days ago
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complete=False,
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pending=True,
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outgoing=outgoing,
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incoming=incoming,
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exclude_uncheckable=True,
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):
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await payment.check_pending()
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# after the first check we will only check outgoing, not incoming
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# that will be handled by the global invoice listeners, hopefully
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incoming = False
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await asyncio.sleep(60 * 30) # every 30 minutes
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async def perform_balance_checks():
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while True:
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for bc in await get_balance_checks():
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redeem_lnurl_withdraw(bc.wallet, bc.url)
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await asyncio.sleep(60 * 60 * 6) # every 6 hours
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async def invoice_callback_dispatcher(checking_id: str):
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payment = await get_standalone_payment(checking_id)
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if payment and payment.is_in:
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await payment.set_pending(False)
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for send_chan in invoice_listeners:
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await send_chan.put(payment)
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