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https://github.com/trustgraph-ai/trustgraph.git
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a2dde9cafb
Cassandra triples services were using syncronous EntityCentricKnowledgeGraph methods from async contexts, and connection state was managed with threading.local which is wrong for asyncio coroutines sharing a single thread. Qdrant services had no async wrapping at all, blocking the event loop on every network call. Rows services had unprotected shared state mutations across concurrent coroutines. - Add async methods to EntityCentricKnowledgeGraph (async_insert, async_get_s/p/o/sp/po/os/spo/all, async_collection_exists, async_create_collection, async_delete_collection) using the existing cassandra_async.async_execute bridge - Rewrite triples write + query services: replace threading.local with asyncio.Lock + dict cache for per-workspace connections, use async ECKG methods for all data operations, keep asyncio.to_thread only for one-time blocking ECKG construction - Wrap all Qdrant calls in asyncio.to_thread across all 6 services (doc/graph/row embeddings write + query), add asyncio.Lock + set cache for collection existence checks - Add asyncio.Lock to rows write + query services to protect shared state (schemas, sessions, config caches) from concurrent mutation - Update all affected tests to match new async patterns
123 lines
3.3 KiB
Python
Executable file
123 lines
3.3 KiB
Python
Executable file
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"""
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Graph embeddings query service. Input is vector, output is list of
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entities
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"""
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import asyncio
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import logging
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from qdrant_client import QdrantClient
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from .... schema import GraphEmbeddingsResponse, EntityMatch
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from .... schema import Error, Term, IRI, LITERAL
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from .... base import GraphEmbeddingsQueryService
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# Module logger
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logger = logging.getLogger(__name__)
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default_ident = "graph-embeddings-query"
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default_store_uri = 'http://localhost:6333'
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class Processor(GraphEmbeddingsQueryService):
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def __init__(self, **params):
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store_uri = params.get("store_uri", default_store_uri)
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#optional api key
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api_key = params.get("api_key", None)
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super(Processor, self).__init__(
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**params | {
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"store_uri": store_uri,
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"api_key": api_key,
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}
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)
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self.qdrant = QdrantClient(url=store_uri, api_key=api_key)
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def create_value(self, ent):
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if ent.startswith("http://") or ent.startswith("https://"):
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return Term(type=IRI, iri=ent)
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else:
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return Term(type=LITERAL, value=ent)
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async def query_graph_embeddings(self, workspace, msg):
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try:
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vec = msg.vector
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if not vec:
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return []
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dim = len(vec)
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collection = f"t_{workspace}_{msg.collection}_{dim}"
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exists = await asyncio.to_thread(
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self.qdrant.collection_exists, collection
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)
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if not exists:
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logger.info(f"Collection {collection} does not exist")
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return []
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# Heuristic hack, get (2*limit), so that we have more chance
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# of getting (limit) unique entities
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result = await asyncio.to_thread(
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self.qdrant.query_points,
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collection_name=collection,
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query=vec,
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limit=msg.limit * 2,
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with_payload=True,
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)
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search_result = result.points
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entity_set = set()
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entities = []
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for r in search_result:
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ent = r.payload["entity"]
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score = r.score if hasattr(r, 'score') else 0.0
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# De-dupe entities, keep highest score
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if ent not in entity_set:
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entity_set.add(ent)
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entities.append(EntityMatch(
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entity=self.create_value(ent),
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score=score,
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))
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# Keep adding entities until limit
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if len(entities) >= msg.limit:
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break
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logger.debug("Send response...")
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return entities
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except Exception as e:
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logger.error(f"Exception querying graph embeddings: {e}", exc_info=True)
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raise e
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@staticmethod
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def add_args(parser):
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GraphEmbeddingsQueryService.add_args(parser)
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parser.add_argument(
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'-t', '--store-uri',
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default=default_store_uri,
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help=f'Qdrant store URI (default: {default_store_uri})'
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)
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parser.add_argument(
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'-k', '--api-key',
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default=None,
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help=f'API key for qdrant (default: None)'
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)
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def run():
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Processor.launch(default_ident, __doc__)
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