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tasks.py
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tasks.py
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import asyncio
import threading
from loguru import logger
from . import nostr_client
from .crud import get_relays
from .nostr.message_pool import EndOfStoredEventsMessage, EventMessage, NoticeMessage
from .router import NostrRouter
async def init_relays():
# get relays from db
relays = await get_relays()
# set relays and connect to them
valid_relays = list(set([r.url for r in relays if r.url]))
nostr_client.reconnect(valid_relays)
async def check_relays():
"""Check relays that have been disconnected"""
while True:
try:
await asyncio.sleep(20)
nostr_client.relay_manager.check_and_restart_relays()
except Exception as e:
logger.warning(f"Cannot restart relays: '{str(e)}'.")
async def subscribe_events():
while not any([r.connected for r in nostr_client.relay_manager.relays.values()]):
await asyncio.sleep(2)
def callback_events(eventMessage: EventMessage):
sub_id = eventMessage.subscription_id
if sub_id not in NostrRouter.received_subscription_events:
NostrRouter.received_subscription_events[sub_id] = [eventMessage]
return
# do not add duplicate events (by event id)
ids = set(
[e.event_id for e in NostrRouter.received_subscription_events[sub_id]]
)
if eventMessage.event_id in ids:
return
NostrRouter.received_subscription_events[sub_id].append(eventMessage)
def callback_notices(noticeMessage: NoticeMessage):
if noticeMessage not in NostrRouter.received_subscription_notices:
NostrRouter.received_subscription_notices.append(noticeMessage)
def callback_eose_notices(eventMessage: EndOfStoredEventsMessage):
sub_id = eventMessage.subscription_id
if sub_id in NostrRouter.received_subscription_eosenotices:
return
NostrRouter.received_subscription_eosenotices[sub_id] = eventMessage
def wrap_async_subscribe():
asyncio.run(
nostr_client.subscribe(
callback_events,
callback_notices,
callback_eose_notices,
)
)
t = threading.Thread(
target=wrap_async_subscribe,
name="Nostr-event-subscription",
daemon=True,
)
t.start()