c073bf55c9
* chore: testing * fix: resubscribe when merchant added/removed * chore: code clean-up * fix: temp subscribe when new merchant is added * fix: new customer profile
203 lines
7.2 KiB
Python
203 lines
7.2 KiB
Python
import asyncio
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import json
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from asyncio import Queue
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from threading import Thread
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from typing import Callable, List
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from loguru import logger
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from websocket import WebSocketApp
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from lnbits.app import settings
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from lnbits.helpers import urlsafe_short_hash
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from .event import NostrEvent
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class NostrClient:
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def __init__(self):
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self.recieve_event_queue: Queue = Queue()
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self.send_req_queue: Queue = Queue()
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self.ws: WebSocketApp = None
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self.subscription_id = "nostrmarket-" + urlsafe_short_hash()[:32]
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async def connect_to_nostrclient_ws(
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self, on_open: Callable, on_message: Callable
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) -> WebSocketApp:
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def on_error(_, error):
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logger.warning(error)
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logger.debug(f"Subscribing to websockets for nostrclient extension")
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ws = WebSocketApp(
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f"ws://localhost:{settings.port}/nostrclient/api/v1/relay",
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on_message=on_message,
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on_open=on_open,
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on_error=on_error,
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)
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wst = Thread(target=ws.run_forever)
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wst.daemon = True
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wst.start()
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return ws
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async def get_event(self):
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value = await self.recieve_event_queue.get()
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if isinstance(value, ValueError):
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raise value
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return value
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async def run_forever(self):
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def on_open(_):
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logger.info("Connected to 'nostrclient' websocket")
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def on_message(_, message):
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self.recieve_event_queue.put_nowait(message)
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running = True
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while running:
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try:
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req = None
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if not self.ws:
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self.ws = await self.connect_to_nostrclient_ws(on_open, on_message)
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# be sure the connection is open
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await asyncio.sleep(3)
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req = await self.send_req_queue.get()
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if isinstance(req, ValueError):
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running = False
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logger.warning(str(req))
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else:
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self.ws.send(json.dumps(req))
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except Exception as ex:
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logger.warning(ex)
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if req:
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await self.send_req_queue.put(req)
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self.ws = None # todo close
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await asyncio.sleep(5)
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async def publish_nostr_event(self, e: NostrEvent):
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await self.send_req_queue.put(["EVENT", e.dict()])
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async def subscribe_merchants(
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self,
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public_keys: List[str],
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dm_time=0,
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stall_time=0,
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product_time=0,
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profile_time=0,
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):
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dm_filters = self._filters_for_direct_messages(public_keys, dm_time)
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stall_filters = self._filters_for_stall_events(public_keys, stall_time)
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product_filters = self._filters_for_product_events(public_keys, product_time)
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profile_filters = self._filters_for_user_profile(public_keys, profile_time)
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merchant_filters = (
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dm_filters + stall_filters + product_filters + profile_filters
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)
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self.subscription_id = "nostrmarket-" + urlsafe_short_hash()[:32]
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await self.send_req_queue.put(["REQ", self.subscription_id] + merchant_filters)
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logger.debug(
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f"Subscribed to events for: {len(public_keys)} keys. New subscription id: {self.subscription_id}"
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)
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async def merchant_temp_subscription(self, pk, duration=5):
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dm_filters = self._filters_for_direct_messages([pk], 0)
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stall_filters = self._filters_for_stall_events([pk], 0)
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product_filters = self._filters_for_product_events([pk], 0)
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profile_filters = self._filters_for_user_profile([pk], 0)
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merchant_filters = (
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dm_filters + stall_filters + product_filters + profile_filters
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)
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subscription_id = "merchant-" + urlsafe_short_hash()[:32]
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logger.debug(
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f"New merchant temp subscription ({duration} sec). Subscription id: {subscription_id}"
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)
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await self.send_req_queue.put(["REQ", subscription_id] + merchant_filters)
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async def unsubscribe_with_delay(sub_id, d):
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await asyncio.sleep(d)
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await self.unsubscribe(sub_id)
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asyncio.create_task(unsubscribe_with_delay(subscription_id, duration))
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async def user_profile_temp_subscribe(self, public_key: str, duration=30) -> List:
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try:
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profile_filter = [{"kinds": [0], "authors": [public_key]}]
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subscription_id = "profile-" + urlsafe_short_hash()[:32]
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logger.debug(
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f"New user temp subscription ({duration} sec). Subscription id: {subscription_id}"
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)
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await self.send_req_queue.put(["REQ", subscription_id] + profile_filter)
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async def unsubscribe_with_delay(sub_id, d):
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await asyncio.sleep(d)
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await self.unsubscribe(sub_id)
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asyncio.create_task(unsubscribe_with_delay(subscription_id, duration))
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except Exception as ex:
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logger.debug(ex)
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def _filters_for_direct_messages(self, public_keys: List[str], since: int) -> List:
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in_messages_filter = {"kinds": [4], "#p": public_keys}
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out_messages_filter = {"kinds": [4], "authors": public_keys}
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if since and since != 0:
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in_messages_filter["since"] = since
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out_messages_filter["since"] = since
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return [in_messages_filter, out_messages_filter]
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def _filters_for_stall_events(self, public_keys: List[str], since: int) -> List:
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stall_filter = {"kinds": [30017], "authors": public_keys}
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if since and since != 0:
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stall_filter["since"] = since
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return [stall_filter]
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def _filters_for_product_events(self, public_keys: List[str], since: int) -> List:
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product_filter = {"kinds": [30018], "authors": public_keys}
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if since and since != 0:
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product_filter["since"] = since
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return [product_filter]
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def _filters_for_user_profile(self, public_keys: List[str], since: int) -> List:
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profile_filter = {"kinds": [0], "authors": public_keys}
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if since and since != 0:
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profile_filter["since"] = since
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return [profile_filter]
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async def restart(self):
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await self.unsubscribe_merchants()
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# Give some time for the CLOSE events to propagate before restarting
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await asyncio.sleep(10)
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logger.info("Restating NostrClient...")
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await self.send_req_queue.put(ValueError("Restarting NostrClient..."))
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await self.recieve_event_queue.put(ValueError("Restarting NostrClient..."))
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self.ws.close()
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self.ws = None
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async def stop(self):
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await self.unsubscribe_merchants()
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# Give some time for the CLOSE events to propagate before closing the connection
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await asyncio.sleep(10)
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self.ws.close()
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self.ws = None
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async def unsubscribe_merchants(self):
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await self.send_req_queue.put(["CLOSE", self.subscription_id])
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logger.debug(
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f"Unsubscribed from all merchants events. Subscription id: {self.subscription_id}"
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)
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async def unsubscribe(self, subscription_id):
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await self.send_req_queue.put(["CLOSE", subscription_id])
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logger.debug(f"Unsubscribed from subscription id: {subscription_id}")
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