mirror of
https://github.com/trustgraph-ai/trustgraph.git
synced 2026-07-24 04:31:02 +02:00
71 lines
1.6 KiB
Python
71 lines
1.6 KiB
Python
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import asyncio
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import queue
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import uuid
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import logging
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from ... schema import Triples
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from ... base import Subscriber
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from . serialize import serialize_triples
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# Module logger
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logger = logging.getLogger(__name__)
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class TriplesExport:
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def __init__(
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self, ws, running, pulsar_client, queue, consumer, subscriber
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):
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self.ws = ws
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self.running = running
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self.pulsar_client = pulsar_client
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self.queue = queue
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self.consumer = consumer
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self.subscriber = subscriber
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async def destroy(self):
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self.running.stop()
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await self.ws.close()
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async def receive(self, msg):
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# Ignore incoming info from websocket
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pass
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async def run(self):
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subs = Subscriber(
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client = self.pulsar_client, topic = self.queue,
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consumer_name = self.consumer, subscription = self.subscriber,
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schema = Triples
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)
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await subs.start()
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id = str(uuid.uuid4())
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q = await subs.subscribe_all(id)
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while self.running.get():
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try:
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resp = await asyncio.wait_for(q.get(), timeout=0.5)
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await self.ws.send_json(serialize_triples(resp))
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except TimeoutError:
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continue
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except queue.Empty:
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continue
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except Exception as e:
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logger.error(f"Exception: {str(e)}", exc_info=True)
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break
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await subs.unsubscribe_all(id)
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await subs.stop()
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await self.ws.close()
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self.running.stop()
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