mirror of
https://github.com/trustgraph-ai/trustgraph.git
synced 2026-07-17 17:21:02 +02:00
55 lines
1.3 KiB
Python
55 lines
1.3 KiB
Python
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import asyncio
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import queue
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from pulsar.schema import JsonSchema
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import uuid
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from ... schema import Triples
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from ... schema import triples_store_queue
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from . subscriber import Subscriber
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from . socket import SocketEndpoint
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from . serialize import serialize_triples
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class TriplesStreamEndpoint(SocketEndpoint):
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def __init__(self, pulsar_host, auth, path="/api/v1/stream/triples"):
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super(TriplesStreamEndpoint, self).__init__(
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endpoint_path=path, auth=auth,
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)
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self.pulsar_host=pulsar_host
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self.subscriber = Subscriber(
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self.pulsar_host, triples_store_queue,
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"api-gateway", "api-gateway",
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schema=JsonSchema(Triples)
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)
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async def start(self):
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self.subscriber.start()
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async def async_thread(self, ws, running):
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id = str(uuid.uuid4())
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q = self.subscriber.subscribe_all(id)
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while running.get():
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try:
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resp = await asyncio.to_thread(q.get, timeout=0.5)
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await ws.send_json(serialize_triples(resp))
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except queue.Empty:
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continue
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except Exception as e:
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print(f"Exception: {str(e)}", flush=True)
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break
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self.subscriber.unsubscribe_all(id)
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running.stop()
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