robosats/api/tasks.py
2023-03-16 11:11:39 -07:00

362 lines
12 KiB
Python

from celery import shared_task
@shared_task(name="users_cleansing")
def users_cleansing():
"""
Deletes users never used 12 hours after creation
"""
from datetime import timedelta
from django.contrib.auth.models import User
from django.db.models import Q
from django.utils import timezone
from api.logics import Logics
# Users who's last login has not been in the last 6 hours
active_time_range = (timezone.now() - timedelta(hours=6), 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, any past contract or any reward.
deleted_users = []
for user in queryset:
# Try an except, due to unknown cause for users lacking profiles.
try:
if (
user.profile.pending_rewards > 0
or user.profile.earned_rewards > 0
or user.profile.claimed_rewards > 0
):
continue
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()
except Exception:
pass
results = {
"num_deleted": len(deleted_users),
"deleted_users": deleted_users,
}
return results
@shared_task(name="give_rewards")
def give_rewards():
"""
Referral rewards go from pending to earned.
Happens asynchronously so the referral program cannot be easily used to spy.
"""
from api.models import Profile
# Users who's last login has not been in the last 6 hours
queryset = Profile.objects.filter(pending_rewards__gt=0)
# And do not have an active trade, any past contract or any reward.
results = {}
for profile in queryset:
given_reward = profile.pending_rewards
profile.earned_rewards += given_reward
profile.pending_rewards = 0
profile.save()
results[profile.user.username] = {
"given_reward": given_reward,
"earned_rewards": profile.earned_rewards,
}
return results
@shared_task(name="follow_send_payment")
def follow_send_payment(hash):
"""Sends sats to buyer, continuous update"""
from datetime import timedelta
from decouple import config
from django.utils import timezone
from api.lightning.node import MACAROON, LNNode
from api.models import LNPayment, Order
lnpayment = LNPayment.objects.get(payment_hash=hash)
lnpayment.last_routing_time = timezone.now()
lnpayment.save()
# Default is 0ppm. Set by the user over API. Client's default is 1000 ppm.
fee_limit_sat = int(
float(lnpayment.num_satoshis) * float(lnpayment.routing_budget_ppm) / 1000000
)
timeout_seconds = int(config("PAYOUT_TIMEOUT_SECONDS"))
request = LNNode.routerrpc.SendPaymentRequest(
payment_request=lnpayment.invoice,
fee_limit_sat=fee_limit_sat,
timeout_seconds=timeout_seconds,
allow_self_payment=True,
)
order = lnpayment.order_paid_LN
if order.trade_escrow.num_satoshis < lnpayment.num_satoshis:
print(f"Order: {order.id} Payout is larger than collateral !?")
return
def handle_response(response):
lnpayment.status = LNPayment.Status.FLIGHT
lnpayment.in_flight = True
lnpayment.save()
order.status = Order.Status.PAY
order.save()
if response.status == 0: # Status 0 'UNKNOWN'
# Not sure when this status happens
print(f"Order: {order.id} UNKNOWN. Hash {hash}")
lnpayment.in_flight = False
lnpayment.save()
if response.status == 1: # Status 1 'IN_FLIGHT'
print(f"Order: {order.id} IN_FLIGHT. Hash {hash}")
if response.status == 3: # Status 3 'FAILED'
lnpayment.status = LNPayment.Status.FAILRO
lnpayment.last_routing_time = timezone.now()
lnpayment.routing_attempts += 1
lnpayment.failure_reason = response.failure_reason
lnpayment.in_flight = False
if lnpayment.routing_attempts > 2:
lnpayment.status = LNPayment.Status.EXPIRE
lnpayment.routing_attempts = 0
lnpayment.save()
order.status = Order.Status.FAI
order.expires_at = timezone.now() + timedelta(
seconds=order.t_to_expire(Order.Status.FAI)
)
order.save()
print(
f"Order: {order.id} FAILED. Hash: {hash} Reason: {LNNode.payment_failure_context[response.failure_reason]}"
)
return {
"succeded": False,
"context": f"payment failure reason: {LNNode.payment_failure_context[response.failure_reason]}",
}
if response.status == 2: # Status 2 'SUCCEEDED'
print(f"Order: {order.id} SUCCEEDED. Hash: {hash}")
lnpayment.status = LNPayment.Status.SUCCED
lnpayment.fee = float(response.fee_msat) / 1000
lnpayment.preimage = response.payment_preimage
lnpayment.save()
order.status = Order.Status.SUC
order.expires_at = timezone.now() + timedelta(
seconds=order.t_to_expire(Order.Status.SUC)
)
order.save()
results = {"succeded": True}
return results
try:
for response in LNNode.routerstub.SendPaymentV2(
request, metadata=[("macaroon", MACAROON.hex())]
):
handle_response(response)
except Exception as e:
if "invoice expired" in str(e):
print(f"Order: {order.id}. INVOICE EXPIRED. Hash: {hash}")
lnpayment.status = LNPayment.Status.EXPIRE
lnpayment.last_routing_time = timezone.now()
lnpayment.in_flight = False
lnpayment.save()
order.status = Order.Status.FAI
order.expires_at = timezone.now() + timedelta(
seconds=order.t_to_expire(Order.Status.FAI)
)
order.save()
results = {"succeded": False, "context": "The payout invoice has expired"}
return results
elif "payment is in transition" in str(e):
print(f"Order: {order.id} ALREADY IN TRANSITION. Hash: {hash}.")
request = LNNode.routerrpc.TrackPaymentRequest(
payment_hash=bytes.fromhex(hash)
)
for response in LNNode.routerstub.TrackPaymentV2(
request, metadata=[("macaroon", MACAROON.hex())]
):
handle_response(response)
elif "invoice is already paid" in str(e):
print(f"Order: {order.id} ALREADY PAID. Hash: {hash}.")
request = LNNode.routerrpc.TrackPaymentRequest(
payment_hash=bytes.fromhex(hash)
)
for response in LNNode.routerstub.TrackPaymentV2(
request, metadata=[("macaroon", MACAROON.hex())]
):
handle_response(response)
else:
print(str(e))
@shared_task(name="payments_cleansing")
def payments_cleansing():
"""
Deletes cancelled payments (hodl invoices never locked) that
belong to orders expired more than 3 days ago.
Deletes 'cancelled' or 'create' onchain_payments
"""
from datetime import timedelta
from django.db.models import Q
from django.utils import timezone
from api.models import LNPayment, OnchainPayment
# Orders that have expired more than -3 days ago
# Usually expiry is 1 day for every finished order. So ~4 days until
# a never locked hodl invoice is removed.
finished_time = timezone.now() - timedelta(days=3)
queryset = LNPayment.objects.filter(
Q(status=LNPayment.Status.CANCEL),
Q(order_made__expires_at__lt=finished_time)
| Q(order_taken__expires_at__lt=finished_time),
)
# And do not have an active trade, any past contract or any reward.
deleted_lnpayments = []
for lnpayment in queryset:
# Try and except. In case some payment is already missing.
try:
name = str(lnpayment)
lnpayment.delete()
deleted_lnpayments.append(name)
except Exception:
pass
# same for onchain payments
queryset = OnchainPayment.objects.filter(
Q(status__in=[OnchainPayment.Status.CANCE, OnchainPayment.Status.CREAT]),
Q(order_paid_TX__expires_at__lt=finished_time) | Q(order_paid_TX__isnull=True),
)
# And do not have an active trade, any past contract or any reward.
deleted_onchainpayments = []
for onchainpayment in queryset:
# Try and except. In case some payment is already missing.
try:
name = str(onchainpayment)
onchainpayment.delete()
deleted_onchainpayments.append(name)
except Exception:
pass
results = {
"num_lnpayments_deleted": len(deleted_lnpayments),
"deleted_lnpayments": deleted_lnpayments,
"num_onchainpayments_deleted": len(deleted_onchainpayments),
"deleted_onchainpayments": deleted_onchainpayments,
}
return results
@shared_task(name="cache_external_market_prices", ignore_result=True)
def cache_market():
from django.utils import timezone
from .models import Currency
from .utils import get_exchange_rates
currency_codes = list(Currency.currency_dict.values())
exchange_rates = get_exchange_rates(currency_codes)
results = {}
for i in range(
len(Currency.currency_dict.values())
): # currencies are indexed starting at 1 (USD)
rate = exchange_rates[i]
results[i] = {currency_codes[i], rate}
# Do not update if no new rate was found
if str(rate) == "nan":
continue
# Create / Update database cached prices
currency_key = list(Currency.currency_dict.keys())[i]
Currency.objects.update_or_create(
id=int(currency_key),
currency=int(currency_key),
# 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
@shared_task(name="send_message", ignore_result=True)
def send_message(order_id, message):
from api.models import Order
order = Order.objects.get(id=order_id)
taker_enabled = (
False if order.taker is None else order.taker.profile.telegram_enabled
)
if not (order.maker.profile.telegram_enabled or taker_enabled):
return
from api.messages import Telegram
telegram = Telegram()
if message == "welcome":
telegram.welcome(order)
elif message == "order_expired_untaken":
telegram.order_expired_untaken(order)
elif message == "trade_successful":
telegram.trade_successful(order)
elif message == "public_order_cancelled":
telegram.public_order_cancelled(order)
elif message == "taker_expired_b4bond":
telegram.taker_expired_b4bond(order)
elif message == "order_published":
telegram.order_published(order)
elif message == "order_taken_confirmed":
telegram.order_taken_confirmed(order)
elif message == "fiat_exchange_starts":
telegram.fiat_exchange_starts(order)
elif message == "dispute_opened":
telegram.dispute_opened(order)
elif message == "collaborative_cancelled":
telegram.collaborative_cancelled(order)
return