from celery import shared_task @shared_task(name="users_cleansing") def users_cleansing(): ''' Deletes users never used 12 hours after creation ''' from django.contrib.auth.models import User from django.db.models import Q from .logics import Logics from datetime import timedelta from django.utils import timezone # Users who's last login has not been in the last 12 hours active_time_range = (timezone.now() - timedelta(hours=12), timezone.now()) queryset = User.objects.filter(~Q(last_login__range=active_time_range)) queryset = queryset.filter(is_staff=False) # Do not delete staff users # And do not have an active trade or any pass finished trade. deleted_users = [] for user in queryset: if not user.profile.total_contracts == 0: continue valid, _ = Logics.validate_already_maker_or_taker(user) if valid: deleted_users.append(str(user)) user.delete() results = { 'num_deleted': len(deleted_users), 'deleted_users': deleted_users, } return results @shared_task(name='follow_send_payment') def follow_send_payment(lnpayment): '''Sends sats to buyer, continuous update''' from decouple import config from base64 import b64decode from api.lightning.node import LNNode from api.models import LNPayment, Order MACAROON = b64decode(config('LND_MACAROON_BASE64')) fee_limit_sat = max(lnpayment.num_satoshis * 0.0002, 10) # 200 ppm or 10 sats max request = LNNode.routerrpc.SendPaymentRequest( payment_request=lnpayment.invoice, fee_limit_sat=fee_limit_sat, timeout_seconds=60) # time out payment in 60 seconds order = lnpayment.order_paid for response in LNNode.routerstub.SendPaymentV2(request, metadata=[('macaroon', MACAROON.hex())]): if response.status == 0 : # Status 0 'UNKNOWN' # Not sure when this status happens pass if response.status == 1 : # Status 1 'IN_FLIGHT' print('IN_FLIGHT') lnpayment.status = LNPayment.Status.FLIGHT lnpayment.save() order.status = Order.Status.PAY order.save() if response.status == 3 : # Status 3 'FAILED' print('FAILED') lnpayment.status = LNPayment.Status.FAILRO lnpayment.save() order.status = Order.Status.FAI order.save() context = LNNode.payment_failure_context[response.failure_reason] # Call for a retry here return False, context if response.status == 2 : # Status 2 'SUCCEEDED' print('SUCCEEDED') lnpayment.status = LNPayment.Status.SUCCED lnpayment.save() order.status = Order.Status.SUC order.save() return True, None @shared_task(name="cache_external_market_prices", ignore_result=True) def cache_market(): from .models import Currency from .utils import get_exchange_rates from django.utils import timezone exchange_rates = get_exchange_rates(list(Currency.currency_dict.values())) results = {} for val in Currency.currency_dict: rate = exchange_rates[int(val)-1] # currecies are indexed starting at 1 (USD) results[val] = {Currency.currency_dict[val], rate} if str(rate) == 'nan': continue # Do not update if no new rate was found # Create / Update database cached prices Currency.objects.update_or_create( id = int(val), currency = int(val), # if there is a Cached market prices matching that id, it updates it with defaults below defaults = { 'exchange_rate': float(rate), 'timestamp': timezone.now(), }) return results